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2726 Commits

Author SHA1 Message Date
Nathan Chancellor ab94de8fcf This is the 3.10.108 stable release
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Merge 3.10.108 into android-msm-bullhead-3.10-oreo-m5

Changes in 3.10.108: (141 commits)
        ipvs: SNAT packet replies only for NATed connections
        net: reduce skb_warn_bad_offload() noise
        net: skb_needs_check() accepts CHECKSUM_NONE for tx
        Staging: comedi: comedi_fops: Avoid orphaned proc entry
        udp: consistently apply ufo or fragmentation
        Bluetooth: bnep: bnep_add_connection() should verify that it's dealing with l2cap socket
        Bluetooth: cmtp: cmtp_add_connection() should verify that it's dealing with l2cap socket
        tcp: introduce tcp_rto_delta_us() helper for xmit timer fix
        tcp: enable xmit timer fix by having TLP use time when RTO should fire
        tcp: fix xmit timer to only be reset if data ACKed/SACKed
        mm/page_alloc: Remove kernel address exposure in free_reserved_area()
        leak in O_DIRECT readv past the EOF
        usb: renesas_usbhs: fix the behavior of some usbhs_pkt_handle
        usb: renesas_usbhs: fix the sequence in xfer_work()
        usb: renesas_usbhs: Fix DMAC sequence for receiving zero-length packet
        fs/exec.c: account for argv/envp pointers
        rxrpc: Fix several cases where a padded len isn't checked in ticket decode
        xfrm: policy: check policy direction value
        nl80211: check for the required netlink attributes presence
        ALSA: seq: Fix use-after-free at creating a port
        MIPS: Send SIGILL for BPOSGE32 in `__compute_return_epc_for_insn'
        serial: ifx6x60: fix use-after-free on module unload
        KEYS: fix dereferencing NULL payload with nonzero length
        usb: chipidea: debug: check before accessing ci_role
        cpufreq: conservative: Allow down_threshold to take values from 1 to 10
        powerpc/kprobes: Pause function_graph tracing during jprobes handling
        staging: comedi: fix clean-up of comedi_class in comedi_init()
        brcmfmac: fix possible buffer overflow in brcmf_cfg80211_mgmt_tx()
        vt: fix unchecked __put_user() in tioclinux ioctls
        crypto: talitos - Extend max key length for SHA384/512-HMAC and AEAD
        PM / Domains: Fix unsafe iteration over modified list of device links
        powerpc/64: Fix atomic64_inc_not_zero() to return an int
        powerpc: Fix emulation of mfocrf in emulate_step()
        powerpc/asm: Mark cr0 as clobbered in mftb()
        usb: renesas_usbhs: fix usbhsc_resume() for !USBHSF_RUNTIME_PWCTRL
        MIPS: Actually decode JALX in `__compute_return_epc_for_insn'
        MIPS: Fix unaligned PC interpretation in `compute_return_epc'
        MIPS: math-emu: Prevent wrong ISA mode instruction emulation
        libata: array underflow in ata_find_dev()
        workqueue: restore WQ_UNBOUND/max_active==1 to be ordered
        ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize
        ext4: fix overflow caused by missing cast in ext4_resize_fs()
        media: platform: davinci: return -EINVAL for VPFE_CMD_S_CCDC_RAW_PARAMS ioctl
        target: Avoid mappedlun symlink creation during lun shutdown
        fuse: initialize the flock flag in fuse_file on allocation
        scsi: zfcp: fix queuecommand for scsi_eh commands when DIX enabled
        scsi: zfcp: add handling for FCP_RESID_OVER to the fcp ingress path
        scsi: zfcp: fix missing trace records for early returns in TMF eh handlers
        scsi: zfcp: fix payload with full FCP_RSP IU in SCSI trace records
        scsi: zfcp: trace HBA FSF response by default on dismiss or timedout late response
        usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
        usb: renesas_usbhs: fix usbhsf_fifo_clear() for RX direction
        iommu/amd: Finish TLB flush in amd_iommu_unmap()
        direct-io: Prevent NULL pointer access in submit_page_section
        USB: serial: console: fix use-after-free after failed setup
        KEYS: don't let add_key() update an uninstantiated key
        FS-Cache: fix dereference of NULL user_key_payload
        ext4: keep existing extra fields when inode expands
        MIPS: Fix mips_atomic_set() retry condition
        KEYS: prevent creating a different user's keyrings
        KEYS: encrypted: fix dereference of NULL user_key_payload
        md/bitmap: disable bitmap_resize for file-backed bitmaps.
        lib/digsig: fix dereference of NULL user_key_payload
        netfilter: invoke synchronize_rcu after set the _hook_ to NULL
        md/raid10: submit bio directly to replacement disk
        md: fix super_offset endianness in super_1_rdev_size_change
        lib/cmdline.c: fix get_options() overflow while parsing ranges
        ext4: fix SEEK_HOLE
        net: prevent sign extension in dev_get_stats()
        kernel/extable.c: mark core_kernel_text notrace
        wext: handle NULL extra data in iwe_stream_add_point better
        netfilter: nf_ct_ext: fix possible panic after nf_ct_extend_unregister
        ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
        ext4: avoid deadlock when expanding inode size
        sctp: don't dereference ptr before leaving _sctp_walk_{params, errors}()
        sctp: fix the check for _sctp_walk_params and _sctp_walk_errors
        sctp: fully initialize the IPv6 address in sctp_v6_to_addr()
        sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
        tcp: disallow cwnd undo when switching congestion control
        netfilter: xt_TCPMSS: add more sanity tests on tcph->doff
        tcp: reset sk_rx_dst in tcp_disconnect()
        tcp: avoid setting cwnd to invalid ssthresh after cwnd reduction states
        tcp: when rearming RTO, if RTO time is in past then fire RTO ASAP
        tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0
        net/packet: check length in getsockopt() called with PACKET_HDRLEN
        net: Set sk_prot_creator when cloning sockets to the right proto
        net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs
        net: 8021q: Fix one possible panic caused by BUG_ON in free_netdev
        x86/io: Add "memory" clobber to insb/insw/insl/outsb/outsw/outsl
        kvm: async_pf: fix rcu_irq_enter() with irqs enabled
        net: ping: do not abuse udp_poll()
        scsi: qla2xxx: don't disable a not previously enabled PCI device
        drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()
        net: xilinx_emaclite: fix receive buffer overflow
        serial: efm32: Fix parity management in 'efm32_uart_console_get_options()'
        x86/mm/32: Set the '__vmalloc_start_set' flag in initmem_init()
        mfd: omap-usb-tll: Fix inverted bit use for USB TLL mode
        pvrusb2: reduce stack usage pvr2_eeprom_analyze()
        usb: r8a66597-hcd: select a different endpoint on timeout
        usb: r8a66597-hcd: decrease timeout
        drivers/misc/c2port/c2port-duramar2150.c: checking for NULL instead of IS_ERR()
        net: phy: fix marvell phy status reading
        net: korina: Fix NAPI versus resources freeing
        xfrm: NULL dereference on allocation failure
        xfrm: Oops on error in pfkey_msg2xfrm_state()
        cpufreq: s3c2416: double free on driver init error path
        KVM: x86: zero base3 of unusable segments
        KEYS: Fix an error code in request_master_key()
        ipv6: avoid unregistering inet6_dev for loopback
        cfg80211: Validate frequencies nested in NL80211_ATTR_SCAN_FREQUENCIES
        cfg80211: Check if PMKID attribute is of expected size
        mm: fix overflow check in expand_upwards()
        crypto: caam - fix signals handling
        ir-core: fix gcc-7 warning on bool arithmetic
        udf: Fix deadlock between writeback and udf_setsize()
        perf annotate: Fix broken arrow at row 0 connecting jmp instruction to its target
        net/mlx4: Remove BUG_ON from ICM allocation routine
        ipv4: initialize fib_trie prior to register_netdev_notifier call.
        workqueue: implicit ordered attribute should be overridable
        packet: fix tp_reserve race in packet_set_ring
        staging:iio:resolver:ad2s1210 fix negative IIO_ANGL_VEL read
        ALSA: core: Fix unexpected error at replacing user TLV
        ACPI / APEI: Add missing synchronize_rcu() on NOTIFY_SCI removal
        qlge: avoid memcpy buffer overflow
        ipv6: fix memory leak with multiple tables during netns destruction
        ipv6: fix typo in fib6_net_exit()
        ip6_gre: fix endianness errors in ip6gre_err
        crypto: AF_ALG - remove SGL terminator indicator when chaining
        scsi: qla2xxx: Fix an integer overflow in sysfs code
        tracing: Apply trace_clock changes to instance max buffer
        tracing: Erase irqsoff trace with empty write
        btrfs: prevent to set invalid default subvolid
        IB/ipoib: rtnl_unlock can not come after free_netdev
        team: fix memory leaks
        IB/qib: fix false-postive maybe-uninitialized warning
        KVM: nVMX: fix guest CR4 loading when emulating L2 to L1 exit
        usb: gadget: composite: Fix use-after-free in usb_composite_overwrite_options
        scsi: scsi_dh_emc: return success in clariion_std_inquiry()
        can: esd_usb2: Fix can_dlc value for received RTR, frames
        x86/apic: fix build breakage caused by incomplete backport to 3.10
        Linux 3.10.108

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
2018-01-25 17:57:49 -07:00
Nathan Chancellor 8eef28437c This is the 3.10.107 stable release
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Merge 3.10.107 into android-msm-bullhead-3.10-oreo-m5

Changes in 3.10.107: (270 commits)
        Revert "Btrfs: don't delay inode ref updates during log, replay"
        Btrfs: fix memory leak in reading btree blocks
        ext4: use more strict checks for inodes_per_block on mount
        ext4: fix in-superblock mount options processing
        ext4: add sanity checking to count_overhead()
        ext4: validate s_first_meta_bg at mount time
        jbd2: don't leak modified metadata buffers on an aborted journal
        ext4: fix fencepost in s_first_meta_bg validation
        ext4: trim allocation requests to group size
        ext4: preserve the needs_recovery flag when the journal is aborted
        ext4: return EROFS if device is r/o and journal replay is needed
        ext4: fix inode checksum calculation problem if i_extra_size is small
        block: fix use-after-free in sys_ioprio_get()
        block: allow WRITE_SAME commands with the SG_IO ioctl
        block: fix del_gendisk() vs blkdev_ioctl crash
        dm crypt: mark key as invalid until properly loaded
        dm space map metadata: fix 'struct sm_metadata' leak on failed create
        md/raid5: limit request size according to implementation limits
        md:raid1: fix a dead loop when read from a WriteMostly disk
        md linear: fix a race between linear_add() and linear_congested()
        CIFS: Fix a possible memory corruption during reconnect
        CIFS: Fix missing nls unload in smb2_reconnect()
        CIFS: Fix a possible memory corruption in push locks
        CIFS: remove bad_network_name flag
        fs/cifs: make share unaccessible at root level mountable
        cifs: Do not send echoes before Negotiate is complete
        ocfs2: fix crash caused by stale lvb with fsdlm plugin
        ocfs2: fix BUG_ON() in ocfs2_ci_checkpointed()
        can: raw: raw_setsockopt: limit number of can_filter that can be set
        can: peak: fix bad memory access and free sequence
        can: c_can_pci: fix null-pointer-deref in c_can_start() - set device pointer
        can: ti_hecc: add missing prepare and unprepare of the clock
        can: bcm: fix hrtimer/tasklet termination in bcm op removal
        can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer
        ALSA: hda - Fix up GPIO for ASUS ROG Ranger
        ALSA: seq: Fix race at creating a queue
        ALSA: seq: Don't handle loop timeout at snd_seq_pool_done()
        ALSA: timer: Reject user params with too small ticks
        ALSA: seq: Fix link corruption by event error handling
        ALSA: seq: Fix racy cell insertions during snd_seq_pool_done()
        ALSA: seq: Fix race during FIFO resize
        ALSA: seq: Don't break snd_use_lock_sync() loop by timeout
        ALSA: usb-audio: Add QuickCam Communicate Deluxe/S7500 to volume_control_quirks
        usb: gadgetfs: restrict upper bound on device configuration size
        USB: gadgetfs: fix unbounded memory allocation bug
        USB: gadgetfs: fix use-after-free bug
        USB: gadgetfs: fix checks of wTotalLength in config descriptors
        xhci: free xhci virtual devices with leaf nodes first
        USB: serial: io_ti: bind to interface after fw download
        usb: gadget: composite: always set ep->mult to a sensible value
        USB: cdc-acm: fix double usb_autopm_put_interface() in acm_port_activate()
        USB: cdc-acm: fix open and suspend race
        USB: cdc-acm: fix failed open not being detected
        usb: dwc3: gadget: make Set Endpoint Configuration macros safe
        usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers
        usb: dwc3: gadget: delay unmap of bounced requests
        usb: hub: Wait for connection to be reestablished after port reset
        usb: gadget: composite: correctly initialize ep->maxpacket
        USB: UHCI: report non-PME wakeup signalling for Intel hardware
        arm/xen: Use alloc_percpu rather than __alloc_percpu
        xfs: set AGI buffer type in xlog_recover_clear_agi_bucket
        xfs: clear _XBF_PAGES from buffers when readahead page
        ssb: Fix error routine when fallback SPROM fails
        drivers/gpu/drm/ast: Fix infinite loop if read fails
        scsi: avoid a permanent stop of the scsi device's request queue
        scsi: move the nr_phys_segments assert into scsi_init_io
        scsi: don't BUG_ON() empty DMA transfers
        scsi: storvsc: properly handle SRB_ERROR when sense message is present
        scsi: storvsc: properly set residual data length on errors
        target/pscsi: Fix TYPE_TAPE + TYPE_MEDIMUM_CHANGER export
        scsi: lpfc: Add shutdown method for kexec
        scsi: sr: Sanity check returned mode data
        scsi: sd: Fix capacity calculation with 32-bit sector_t
        s390/vmlogrdr: fix IUCV buffer allocation
        libceph: verify authorize reply on connect
        nfs_write_end(): fix handling of short copies
        powerpc/ps3: Fix system hang with GCC 5 builds
        sg_write()/bsg_write() is not fit to be called under KERNEL_DS
        ftrace/x86: Set ftrace_stub to weak to prevent gcc from using short jumps to it
        cred/userns: define current_user_ns() as a function
        net: ti: cpmac: Fix compiler warning due to type confusion
        tick/broadcast: Prevent NULL pointer dereference
        netvsc: reduce maximum GSO size
        drop_monitor: add missing call to genlmsg_end
        drop_monitor: consider inserted data in genlmsg_end
        igmp: Make igmp group member RFC 3376 compliant
        HID: hid-cypress: validate length of report
        Input: xpad - use correct product id for x360w controllers
        Input: i8042 - add noloop quirk for Dell Embedded Box PC 3000
        Input: iforce - validate number of endpoints before using them
        Input: kbtab - validate number of endpoints before using them
        Input: joydev - do not report stale values on first open
        Input: tca8418 - use the interrupt trigger from the device tree
        Input: mpr121 - handle multiple bits change of status register
        Input: mpr121 - set missing event capability
        Input: i8042 - add Clevo P650RS to the i8042 reset list
        i2c: fix kernel memory disclosure in dev interface
        vme: Fix wrong pointer utilization in ca91cx42_slave_get
        sysrq: attach sysrq handler correctly for 32-bit kernel
        pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE
        x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
        qla2xxx: Fix crash due to null pointer access
        ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
        ARM: dts: da850-evm: fix read access to SPI flash
        NFSv4: Ensure nfs_atomic_open set the dentry verifier on ENOENT
        vmxnet3: Wake queue from reset work
        Fix memory leaks in cifs_do_mount()
        Compare prepaths when comparing superblocks
        Move check for prefix path to within cifs_get_root()
        Fix regression which breaks DFS mounting
        apparmor: fix uninitialized lsm_audit member
        apparmor: exec should not be returning ENOENT when it denies
        apparmor: fix disconnected bind mnts reconnection
        apparmor: internal paths should be treated as disconnected
        apparmor: check that xindex is in trans_table bounds
        apparmor: add missing id bounds check on dfa verification
        apparmor: don't check for vmalloc_addr if kvzalloc() failed
        apparmor: fix oops in profile_unpack() when policy_db is not present
        apparmor: fix module parameters can be changed after policy is locked
        apparmor: do not expose kernel stack
        vfio/pci: Fix integer overflows, bitmask check
        bna: Add synchronization for tx ring.
        sg: Fix double-free when drives detach during SG_IO
        move the call of __d_drop(anon) into __d_materialise_unique(dentry, anon)
        serial: 8250_pci: Detach low-level driver during PCI error recovery
        bnx2x: Correct ringparam estimate when DOWN
        tile/ptrace: Preserve previous registers for short regset write
        sysctl: fix proc_doulongvec_ms_jiffies_minmax()
        ISDN: eicon: silence misleading array-bounds warning
        ARC: [arcompact] handle unaligned access delay slot corner case
        parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
        nfs: Don't increment lock sequence ID after NFS4ERR_MOVED
        ipv6: addrconf: Avoid addrconf_disable_change() using RCU read-side lock
        af_unix: move unix_mknod() out of bindlock
        drm/nouveau/nv1a,nv1f/disp: fix memory clock rate retrieval
        crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg
        ata: sata_mv:- Handle return value of devm_ioremap.
        mm/memory_hotplug.c: check start_pfn in test_pages_in_a_zone()
        mm, fs: check for fatal signals in do_generic_file_read()
        ARC: [arcompact] brown paper bag bug in unaligned access delay slot fixup
        sched/debug: Don't dump sched debug info in SysRq-W
        tcp: fix 0 divide in __tcp_select_window()
        macvtap: read vnet_hdr_size once
        packet: round up linear to header len
        vfs: fix uninitialized flags in splice_to_pipe()
        siano: make it work again with CONFIG_VMAP_STACK
        futex: Move futex_init() to core_initcall
        rtc: interface: ignore expired timers when enqueuing new timers
        irda: Fix lockdep annotations in hashbin_delete().
        tty: serial: msm: Fix module autoload
        rtlwifi: rtl_usb: Fix for URB leaking when doing ifconfig up/down
        af_packet: remove a stray tab in packet_set_ring()
        MIPS: Fix special case in 64 bit IP checksumming.
        mm: vmpressure: fix sending wrong events on underflow
        ipc/shm: Fix shmat mmap nil-page protection
        sd: get disk reference in sd_check_events()
        samples/seccomp: fix 64-bit comparison macros
        ath5k: drop bogus warning on drv_set_key with unsupported cipher
        rdma_cm: fail iwarp accepts w/o connection params
        NFSv4: fix getacl ERANGE for some ACL buffer sizes
        bcma: use (get|put)_device when probing/removing device driver
        powerpc/xmon: Fix data-breakpoint
        KVM: VMX: use correct vmcs_read/write for guest segment selector/base
        KVM: PPC: Book3S PR: Fix illegal opcode emulation
        KVM: s390: fix task size check
        s390: TASK_SIZE for kernel threads
        xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD
        mac80211: flush delayed work when entering suspend
        drm/ast: Fix test for VGA enabled
        drm/ttm: Make sure BOs being swapped out are cacheable
        fat: fix using uninitialized fields of fat_inode/fsinfo_inode
        drivers: hv: Turn off write permission on the hypercall page
        xhci: fix 10 second timeout on removal of PCI hotpluggable xhci controllers
        crypto: improve gcc optimization flags for serpent and wp512
        mtd: pmcmsp: use kstrndup instead of kmalloc+strncpy
        cpmac: remove hopeless #warning
        mvsas: fix misleading indentation
        l2tp: avoid use-after-free caused by l2tp_ip_backlog_recv
        net: don't call strlen() on the user buffer in packet_bind_spkt()
        dccp: Unlock sock before calling sk_free()
        tcp: fix various issues for sockets morphing to listen state
        uapi: fix linux/packet_diag.h userspace compilation error
        ipv6: avoid write to a possibly cloned skb
        dccp: fix memory leak during tear-down of unsuccessful connection request
        futex: Fix potential use-after-free in FUTEX_REQUEUE_PI
        futex: Add missing error handling to FUTEX_REQUEUE_PI
        give up on gcc ilog2() constant optimizations
        cancel the setfilesize transation when io error happen
        crypto: ghash-clmulni - Fix load failure
        crypto: cryptd - Assign statesize properly
        ACPI / video: skip evaluating _DOD when it does not exist
        Drivers: hv: balloon: don't crash when memory is added in non-sorted order
        s390/pci: fix use after free in dma_init
        cpufreq: Fix and clean up show_cpuinfo_cur_freq()
        igb: Workaround for igb i210 firmware issue
        igb: add i211 to i210 PHY workaround
        ipv4: provide stronger user input validation in nl_fib_input()
        tcp: initialize icsk_ack.lrcvtime at session start time
        ACM gadget: fix endianness in notifications
        mmc: sdhci: Do not disable interrupts while waiting for clock
        uvcvideo: uvc_scan_fallback() for webcams with broken chain
        fbcon: Fix vc attr at deinit
        crypto: algif_hash - avoid zero-sized array
        virtio_balloon: init 1st buffer in stats vq
        c6x/ptrace: Remove useless PTRACE_SETREGSET implementation
        sparc/ptrace: Preserve previous registers for short regset write
        metag/ptrace: Preserve previous registers for short regset write
        metag/ptrace: Provide default TXSTATUS for short NT_PRSTATUS
        metag/ptrace: Reject partial NT_METAG_RPIPE writes
        libceph: force GFP_NOIO for socket allocations
        ACPI: Fix incompatibility with mcount-based function graph tracing
        ACPI / power: Avoid maybe-uninitialized warning
        rtc: s35390a: make sure all members in the output are set
        rtc: s35390a: implement reset routine as suggested by the reference
        rtc: s35390a: improve irq handling
        padata: avoid race in reordering
        HID: hid-lg: Fix immediate disconnection of Logitech Rumblepad 2
        HID: i2c-hid: Add sleep between POWER ON and RESET
        drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl()
        drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl()
        drm/vmwgfx: Remove getparam error message
        drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()
        Reset TreeId to zero on SMB2 TREE_CONNECT
        metag/usercopy: Drop unused macros
        metag/usercopy: Zero rest of buffer from copy_from_user
        powerpc: Don't try to fix up misaligned load-with-reservation instructions
        mm/mempolicy.c: fix error handling in set_mempolicy and mbind.
        mtd: bcm47xxpart: fix parsing first block after aligned TRX
        net/packet: fix overflow in check for priv area size
        x86/vdso: Plug race between mapping and ELF header setup
        iscsi-target: Fix TMR reference leak during session shutdown
        iscsi-target: Drop work-around for legacy GlobalSAN initiator
        xen, fbfront: fix connecting to backend
        char: lack of bool string made CONFIG_DEVPORT always on
        platform/x86: acer-wmi: setup accelerometer when machine has appropriate notify event
        platform/x86: acer-wmi: setup accelerometer when ACPI device was found
        mm: Tighten x86 /dev/mem with zeroing reads
        virtio-console: avoid DMA from stack
        catc: Combine failure cleanup code in catc_probe()
        catc: Use heap buffer for memory size test
        net: ipv6: check route protocol when deleting routes
        Drivers: hv: don't leak memory in vmbus_establish_gpadl()
        Drivers: hv: get rid of timeout in vmbus_open()
        ubi/upd: Always flush after prepared for an update
        x86/mce/AMD: Give a name to MCA bank 3 when accessed with legacy MSRs
        powerpc: Reject binutils 2.24 when building little endian
        net/packet: fix overflow in check for tp_frame_nr
        net/packet: fix overflow in check for tp_reserve
        tty: nozomi: avoid a harmless gcc warning
        hostap: avoid uninitialized variable use in hfa384x_get_rid
        gfs2: avoid uninitialized variable warning
        net: neigh: guard against NULL solicit() method
        sctp: listen on the sock only when it's state is listening or closed
        ip6mr: fix notification device destruction
        MIPS: Fix crash registers on non-crashing CPUs
        RDS: Fix the atomicity for congestion map update
        xen/x86: don't lose event interrupts
        p9_client_readdir() fix
        nfsd: check for oversized NFSv2/v3 arguments
        ftrace/x86: Fix triple fault with graph tracing and suspend-to-ram
        kvm: nVMX: Allow L1 to intercept software exceptions (#BP and #OF)
        tun: read vnet_hdr_sz once
        printk: use rcuidle console tracepoint
        ipv6: check raw payload size correctly in ioctl
        x86: standardize mmap_rnd() usage
        x86/mm/32: Enable full randomization on i386 and X86_32
        mm: larger stack guard gap, between vmas
        mm: fix new crash in unmapped_area_topdown()
        Allow stack to grow up to address space limit
        Linux 3.10.107

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

Conflicts:
	arch/x86/mm/mmap.c
	drivers/mmc/host/sdhci.c
	drivers/usb/host/xhci-plat.c
	fs/ext4/super.c
	kernel/sched/core.c
2018-01-25 17:57:41 -07:00
Nathan Chancellor 8ca93b4c05 This is the 3.10.106 stable release
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Merge 3.10.106 into android-msm-bullhead-3.10-oreo-m5

Changes in 3.10.106: (252 commits)
        packet: fix race condition in packet_set_ring
        crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks
        EVM: Use crypto_memneq() for digest comparisons
        libceph: don't set weight to IN when OSD is destroyed
        KVM: x86: fix emulation of "MOV SS, null selector"
        KVM: x86: Introduce segmented_write_std
        posix_acl: Clear SGID bit when setting file permissions
        tmpfs: clear S_ISGID when setting posix ACLs
        fbdev: color map copying bounds checking
        selinux: fix off-by-one in setprocattr
        tcp: avoid infinite loop in tcp_splice_read()
        xfrm_user: validate XFRM_MSG_NEWAE XFRMA_REPLAY_ESN_VAL replay_window
        xfrm_user: validate XFRM_MSG_NEWAE incoming ESN size harder
        KEYS: Disallow keyrings beginning with '.' to be joined as session keyrings
        KEYS: Change the name of the dead type to ".dead" to prevent user access
        KEYS: fix keyctl_set_reqkey_keyring() to not leak thread keyrings
        ext4: fix data exposure after a crash
        locking/rtmutex: Prevent dequeue vs. unlock race
        m68k: Fix ndelay() macro
        hotplug: Make register and unregister notifier API symmetric
        Btrfs: fix tree search logic when replaying directory entry deletes
        USB: serial: kl5kusb105: fix open error path
        block_dev: don't test bdev->bd_contains when it is not stable
        crypto: caam - fix AEAD givenc descriptors
        ext4: fix mballoc breakage with 64k block size
        ext4: fix stack memory corruption with 64k block size
        ext4: reject inodes with negative size
        ext4: return -ENOMEM instead of success
        f2fs: set ->owner for debugfs status file's file_operations
        block: protect iterate_bdevs() against concurrent close
        scsi: zfcp: fix use-after-"free" in FC ingress path after TMF
        scsi: zfcp: do not trace pure benign residual HBA responses at default level
        scsi: zfcp: fix rport unblock race with LUN recovery
        ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it
        IB/mad: Fix an array index check
        IB/multicast: Check ib_find_pkey() return value
        powerpc: Convert cmp to cmpd in idle enter sequence
        usb: gadget: composite: Test get_alt() presence instead of set_alt()
        USB: serial: omninet: fix NULL-derefs at open and disconnect
        USB: serial: quatech2: fix sleep-while-atomic in close
        USB: serial: pl2303: fix NULL-deref at open
        USB: serial: keyspan_pda: verify endpoints at probe
        USB: serial: spcp8x5: fix NULL-deref at open
        USB: serial: io_ti: fix NULL-deref at open
        USB: serial: io_ti: fix another NULL-deref at open
        USB: serial: iuu_phoenix: fix NULL-deref at open
        USB: serial: garmin_gps: fix memory leak on failed URB submit
        USB: serial: ti_usb_3410_5052: fix NULL-deref at open
        USB: serial: io_edgeport: fix NULL-deref at open
        USB: serial: oti6858: fix NULL-deref at open
        USB: serial: cyberjack: fix NULL-deref at open
        USB: serial: kobil_sct: fix NULL-deref in write
        USB: serial: mos7840: fix NULL-deref at open
        USB: serial: mos7720: fix NULL-deref at open
        USB: serial: mos7720: fix use-after-free on probe errors
        USB: serial: mos7720: fix parport use-after-free on probe errors
        USB: serial: mos7720: fix parallel probe
        usb: xhci-mem: use passed in GFP flags instead of GFP_KERNEL
        usb: musb: Fix trying to free already-free IRQ 4
        ALSA: usb-audio: Fix bogus error return in snd_usb_create_stream()
        USB: serial: kl5kusb105: abort on open exception path
        staging: iio: ad7606: fix improper setting of oversampling pins
        usb: dwc3: gadget: always unmap EP0 requests
        cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected
        hwmon: (ds620) Fix overflows seen when writing temperature limits
        clk: clk-wm831x: fix a logic error
        iommu/amd: Fix the left value check of cmd buffer
        scsi: mvsas: fix command_active typo
        target/iscsi: Fix double free in lio_target_tiqn_addtpg()
        mmc: mmc_test: Uninitialized return value
        powerpc/pci/rpadlpar: Fix device reference leaks
        ser_gigaset: return -ENOMEM on error instead of success
        net, sched: fix soft lockup in tc_classify
        net: stmmac: Fix race between stmmac_drv_probe and stmmac_open
        gro: Enter slow-path if there is no tailroom
        gro: use min_t() in skb_gro_reset_offset()
        gro: Disable frag0 optimization on IPv6 ext headers
        powerpc: Fix build warning on 32-bit PPC
        Input: i8042 - add Pegatron touchpad to noloop table
        mm/hugetlb.c: fix reservation race when freeing surplus pages
        USB: serial: kl5kusb105: fix line-state error handling
        USB: serial: ch341: fix initial modem-control state
        USB: serial: ch341: fix open error handling
        USB: serial: ch341: fix control-message error handling
        USB: serial: ch341: fix open and resume after B0
        USB: serial: ch341: fix resume after reset
        USB: serial: ch341: fix modem-control and B0 handling
        x86/cpu: Fix bootup crashes by sanitizing the argument of the 'clearcpuid=' command-line option
        NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success.
        powerpc/ibmebus: Fix further device reference leaks
        powerpc/ibmebus: Fix device reference leaks in sysfs interface
        IB/mlx4: Set traffic class in AH
        IB/mlx4: Fix port query for 56Gb Ethernet links
        perf scripting: Avoid leaking the scripting_context variable
        ARM: dts: imx31: fix clock control module interrupts description
        svcrpc: don't leak contexts on PROC_DESTROY
        mmc: mxs-mmc: Fix additional cycles after transmission stop
        mtd: nand: xway: disable module support
        ubifs: Fix journal replay wrt. xattr nodes
        arm64/ptrace: Preserve previous registers for short regset write
        arm64/ptrace: Avoid uninitialised struct padding in fpr_set()
        arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fields
        ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation
        ite-cir: initialize use_demodulator before using it
        fuse: do not use iocb after it may have been freed
        crypto: caam - fix non-hmac hashes
        drm/i915: Don't leak edid in intel_crt_detect_ddc()
        s5k4ecgx: select CRC32 helper
        platform/x86: intel_mid_powerbtn: Set IRQ_ONESHOT
        net: fix harmonize_features() vs NETIF_F_HIGHDMA
        tcp: initialize max window for a new fastopen socket
        svcrpc: fix oops in absence of krb5 module
        ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write
        mac80211: Fix adding of mesh vendor IEs
        scsi: zfcp: fix use-after-free by not tracing WKA port open/close on failed send
        drm/i915: fix use-after-free in page_flip_completed()
        net: use a work queue to defer net_disable_timestamp() work
        ipv4: keep skb->dst around in presence of IP options
        netlabel: out of bound access in cipso_v4_validate()
        ip6_gre: fix ip6gre_err() invalid reads
        ping: fix a null pointer dereference
        l2tp: do not use udp_ioctl()
        packet: fix races in fanout_add()
        packet: Do not call fanout_release from atomic contexts
        net: socket: fix recvmmsg not returning error from sock_error
        USB: serial: mos7840: fix another NULL-deref at open
        USB: serial: ftdi_sio: fix modem-status error handling
        USB: serial: ftdi_sio: fix extreme low-latency setting
        USB: serial: ftdi_sio: fix line-status over-reporting
        USB: serial: spcp8x5: fix modem-status handling
        USB: serial: opticon: fix CTS retrieval at open
        USB: serial: ark3116: fix register-accessor error handling
        x86/platform/goldfish: Prevent unconditional loading
        goldfish: Sanitize the broken interrupt handler
        ocfs2: do not write error flag to user structure we cannot copy from/to
        mfd: pm8921: Potential NULL dereference in pm8921_remove()
        drm/nv50/disp: min/max are reversed in nv50_crtc_gamma_set()
        net: 6lowpan: fix lowpan_header_create non-compression memcpy call
        vti4: Don't count header length twice.
        net/sched: em_meta: Fix 'meta vlan' to correctly recognize zero VID frames
        MIPS: OCTEON: Fix copy_from_user fault handling for large buffers
        MIPS: Clear ISA bit correctly in get_frame_info()
        MIPS: Prevent unaligned accesses during stack unwinding
        MIPS: Fix get_frame_info() handling of microMIPS function size
        MIPS: Fix is_jump_ins() handling of 16b microMIPS instructions
        MIPS: Calculate microMIPS ra properly when unwinding the stack
        MIPS: Handle microMIPS jumps in the same way as MIPS32/MIPS64 jumps
        uvcvideo: Fix a wrong macro
        scsi: aacraid: Reorder Adapter status check
        ath9k: use correct OTP register offsets for the AR9340 and AR9550
        fuse: add missing FR_FORCE
        RDMA/core: Fix incorrect structure packing for booleans
        NFSv4: fix getacl head length estimation
        s390/qdio: clear DSCI prior to scanning multiple input queues
        IB/ipoib: Fix deadlock between rmmod and set_mode
        ktest: Fix child exit code processing
        nlm: Ensure callback code also checks that the files match
        dm: flush queued bios when process blocks to avoid deadlock
        USB: serial: digi_acceleport: fix OOB data sanity check
        USB: serial: digi_acceleport: fix OOB-event processing
        MIPS: ip27: Disable qlge driver in defconfig
        tracing: Add #undef to fix compile error
        USB: serial: safe_serial: fix information leak in completion handler
        USB: serial: omninet: fix reference leaks at open
        USB: iowarrior: fix NULL-deref at probe
        USB: iowarrior: fix NULL-deref in write
        USB: serial: io_ti: fix NULL-deref in interrupt callback
        USB: serial: io_ti: fix information leak in completion handler
        vxlan: correctly validate VXLAN ID against VXLAN_N_VID
        ipv4: mask tos for input route
        locking/static_keys: Add static_key_{en,dis}able() helpers
        net: net_enable_timestamp() can be called from irq contexts
        dccp/tcp: fix routing redirect race
        net sched actions: decrement module reference count after table flush.
        perf/core: Fix event inheritance on fork()
        isdn/gigaset: fix NULL-deref at probe
        xen: do not re-use pirq number cached in pci device msi msg data
        net: properly release sk_frag.page
        net: unix: properly re-increment inflight counter of GC discarded candidates
        Input: ims-pcu - validate number of endpoints before using them
        Input: hanwang - validate number of endpoints before using them
        Input: yealink - validate number of endpoints before using them
        Input: cm109 - validate number of endpoints before using them
        USB: uss720: fix NULL-deref at probe
        USB: idmouse: fix NULL-deref at probe
        USB: wusbcore: fix NULL-deref at probe
        uwb: i1480-dfu: fix NULL-deref at probe
        uwb: hwa-rc: fix NULL-deref at probe
        mmc: ushc: fix NULL-deref at probe
        ext4: mark inode dirty after converting inline directory
        scsi: libsas: fix ata xfer length
        ALSA: ctxfi: Fallback DMA mask to 32bit
        ALSA: ctxfi: Fix the incorrect check of dma_set_mask() call
        ACPI / PNP: Avoid conflicting resource reservations
        ACPI / resources: free memory on error in add_region_before()
        ACPI / PNP: Reserve ACPI resources at the fs_initcall_sync stage
        USB: OHCI: Fix race between ED unlink and URB submission
        i2c: at91: manage unexpected RXRDY flag when starting a transfer
        ipv4: igmp: Allow removing groups from a removed interface
        ptrace: fix PTRACE_LISTEN race corrupting task->state
        ring-buffer: Fix return value check in test_ringbuffer()
        metag/usercopy: Fix alignment error checking
        metag/usercopy: Add early abort to copy_to_user
        metag/usercopy: Set flags before ADDZ
        metag/usercopy: Fix src fixup in from user rapf loops
        metag/usercopy: Add missing fixups
        s390/decompressor: fix initrd corruption caused by bss clear
        net/mlx4_en: Fix bad WQE issue
        net/mlx4_core: Fix racy CQ (Completion Queue) free
        char: Drop bogus dependency of DEVPORT on !M68K
        powerpc: Disable HFSCR[TM] if TM is not supported
        pegasus: Use heap buffers for all register access
        rtl8150: Use heap buffers for all register access
        tracing: Allocate the snapshot buffer before enabling probe
        ring-buffer: Have ring_buffer_iter_empty() return true when empty
        netfilter: arp_tables: fix invoking 32bit "iptable -P INPUT ACCEPT" failed in 64bit kernel
        net: phy: handle state correctly in phy_stop_machine
        l2tp: take reference on sessions being dumped
        MIPS: KGDB: Use kernel context for sleeping threads
        ARM: dts: imx31: move CCM device node to AIPS2 bus devices
        ARM: dts: imx31: fix AVIC base address
        tun: Fix TUN_PKT_STRIP setting
        Staging: vt6655-6: potential NULL dereference in hostap_disable_hostapd()
        net: sctp: rework multihoming retransmission path selection to rfc4960
        perf trace: Use the syscall raw_syscalls:sys_enter timestamp
        USB: usbtmc: add missing endpoint sanity check
        ping: implement proper locking
        USB: fix problems with duplicate endpoint addresses
        USB: dummy-hcd: fix bug in stop_activity (handle ep0)
        mm/init: fix zone boundary creation
        can: Fix kernel panic at security_sock_rcv_skb
        Drivers: hv: avoid vfree() on crash
        xc2028: avoid use after free
        xc2028: unlock on error in xc2028_set_config()
        xc2028: Fix use-after-free bug properly
        ipv6: fix ip6_tnl_parse_tlv_enc_lim()
        ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()
        ipv6: fix the use of pcpu_tstats in ip6_tunnel
        sctp: avoid BUG_ON on sctp_wait_for_sndbuf
        sctp: deny peeloff operation on asocs with threads sleeping on it
        KVM: x86: clear bus pointer when destroyed
        kvm: exclude ioeventfd from counting kvm_io_range limit
        KVM: kvm_io_bus_unregister_dev() should never fail
        TTY: n_hdlc, fix lockdep false positive
        tty: n_hdlc: get rid of racy n_hdlc.tbuf
        ipv6: handle -EFAULT from skb_copy_bits
        fs: exec: apply CLOEXEC before changing dumpable task flags
        mm/huge_memory.c: respect FOLL_FORCE/FOLL_COW for thp
        dccp/tcp: do not inherit mc_list from parent
        char: lp: fix possible integer overflow in lp_setup()
        dccp: fix freeing skb too early for IPV6_RECVPKTINFO
        Linux 3.10.106

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

Conflicts:
	drivers/mfd/pm8921-core.c
	include/linux/cpu.h
	kernel/cpu.c
	net/ipv4/inet_connection_sock.c
	net/ipv4/ping.c
2018-01-25 17:54:29 -07:00
Nathan Chancellor a626beca4c This is the 3.10.105 stable release
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Merge 3.10.105 into android-msm-bullhead-3.10-oreo-m5

Changes in 3.10.105: (315 commits)
        sched/core: Fix a race between try_to_wake_up() and a woken up task
        sched/core: Fix an SMP ordering race in try_to_wake_up() vs. schedule()
        crypto: algif_skcipher - Require setkey before accept(2)
        crypto: af_alg - Disallow bind/setkey/... after accept(2)
        crypto: af_alg - Add nokey compatibility path
        crypto: algif_skcipher - Add nokey compatibility path
        crypto: hash - Add crypto_ahash_has_setkey
        crypto: shash - Fix has_key setting
        crypto: algif_hash - Require setkey before accept(2)
        crypto: skcipher - Add crypto_skcipher_has_setkey
        crypto: algif_skcipher - Add key check exception for cipher_null
        crypto: af_alg - Allow af_af_alg_release_parent to be called on nokey path
        crypto: algif_hash - Remove custom release parent function
        crypto: algif_skcipher - Remove custom release parent function
        crypto: af_alg - Forbid bind(2) when nokey child sockets are present
        crypto: algif_hash - Fix race condition in hash_check_key
        crypto: algif_skcipher - Fix race condition in skcipher_check_key
        crypto: algif_skcipher - Load TX SG list after waiting
        crypto: cryptd - initialize child shash_desc on import
        crypto: skcipher - Fix blkcipher walk OOM crash
        crypto: gcm - Fix IV buffer size in crypto_gcm_setkey
        MIPS: KVM: Fix unused variable build warning
        KVM: MIPS: Precalculate MMIO load resume PC
        KVM: MIPS: Drop other CPU ASIDs on guest MMU changes
        KVM: nVMX: postpone VMCS changes on MSR_IA32_APICBASE write
        KVM: MIPS: Make ERET handle ERL before EXL
        KVM: x86: fix wbinvd_dirty_mask use-after-free
        KVM: x86: fix missed SRCU usage in kvm_lapic_set_vapic_addr
        KVM: Disable irq while unregistering user notifier
        PM / devfreq: Fix incorrect type issue.
        ppp: defer netns reference release for ppp channel
        x86/mm/xen: Suppress hugetlbfs in PV guests
        xen: Add RING_COPY_REQUEST()
        xen-netback: don't use last request to determine minimum Tx credit
        xen-netback: use RING_COPY_REQUEST() throughout
        xen-blkback: only read request operation from shared ring once
        xen/pciback: Save xen_pci_op commands before processing it
        xen/pciback: Save the number of MSI-X entries to be copied later.
        xen/pciback: Return error on XEN_PCI_OP_enable_msi when device has MSI or MSI-X enabled
        xen/pciback: Return error on XEN_PCI_OP_enable_msix when device has MSI or MSI-X enabled
        xen/pciback: Do not install an IRQ handler for MSI interrupts.
        xen/pciback: For XEN_PCI_OP_disable_msi[|x] only disable if device has MSI(X) enabled.
        xen/pciback: Don't allow MSI-X ops if PCI_COMMAND_MEMORY is not set.
        xen-pciback: Add name prefix to global 'permissive' variable
        x86/xen: fix upper bound of pmd loop in xen_cleanhighmap()
        x86/traps: Ignore high word of regs->cs in early_idt_handler_common
        x86/mm: Disable preemption during CR3 read+write
        x86/apic: Do not init irq remapping if ioapic is disabled
        x86/mm/pat, /dev/mem: Remove superfluous error message
        x86/paravirt: Do not trace _paravirt_ident_*() functions
        x86/build: Build compressed x86 kernels as PIE
        x86/um: reuse asm-generic/barrier.h
        iommu/amd: Update Alias-DTE in update_device_table()
        iommu/amd: Free domain id when free a domain of struct dma_ops_domain
        ARM: 8616/1: dt: Respect property size when parsing CPUs
        ARM: 8618/1: decompressor: reset ttbcr fields to use TTBR0 on ARMv7
        ARM: sa1100: clear reset status prior to reboot
        ARM: sa1111: fix pcmcia suspend/resume
        arm64: avoid returning from bad_mode
        arm64: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
        arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()
        arm64: debug: avoid resetting stepping state machine when TIF_SINGLESTEP
        MIPS: Malta: Fix IOCU disable switch read for MIPS64
        MIPS: ptrace: Fix regs_return_value for kernel context
        powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET
        powerpc/vdso64: Use double word compare on pointers
        powerpc/powernv: Use CPU-endian PEST in pnv_pci_dump_p7ioc_diag_data()
        powerpc/64: Fix incorrect return value from __copy_tofrom_user
        powerpc/nvram: Fix an incorrect partition merge
        avr32: fix copy_from_user()
        avr32: fix 'undefined reference to `___copy_from_user'
        avr32: off by one in at32_init_pio()
        s390/dasd: fix hanging device after clear subchannel
        parisc: Ensure consistent state when switching to kernel stack at syscall entry
        microblaze: fix __get_user()
        microblaze: fix copy_from_user()
        mn10300: failing __get_user() and get_user() should zero
        m32r: fix __get_user()
        sh64: failing __get_user() should zero
        score: fix __get_user/get_user
        s390: get_user() should zero on failure
        ARC: uaccess: get_user to zero out dest in cause of fault
        asm-generic: make get_user() clear the destination on errors
        frv: fix clear_user()
        cris: buggered copy_from_user/copy_to_user/clear_user
        blackfin: fix copy_from_user()
        score: fix copy_from_user() and friends
        sh: fix copy_from_user()
        hexagon: fix strncpy_from_user() error return
        mips: copy_from_user() must zero the destination on access_ok() failure
        asm-generic: make copy_from_user() zero the destination properly
        alpha: fix copy_from_user()
        metag: copy_from_user() should zero the destination on access_ok() failure
        parisc: fix copy_from_user()
        openrisc: fix copy_from_user()
        openrisc: fix the fix of copy_from_user()
        mn10300: copy_from_user() should zero on access_ok() failure...
        sparc32: fix copy_from_user()
        ppc32: fix copy_from_user()
        ia64: copy_from_user() should zero the destination on access_ok() failure
        fix fault_in_multipages_...() on architectures with no-op access_ok()
        fix memory leaks in tracing_buffers_splice_read()
        arc: don't leak bits of kernel stack into coredump
        Fix potential infoleak in older kernels
        swapfile: fix memory corruption via malformed swapfile
        coredump: fix unfreezable coredumping task
        usb: dwc3: gadget: increment request->actual once
        USB: validate wMaxPacketValue entries in endpoint descriptors
        USB: fix typo in wMaxPacketSize validation
        usb: xhci: Fix panic if disconnect
        USB: serial: fix memleak in driver-registration error path
        USB: kobil_sct: fix non-atomic allocation in write path
        USB: serial: mos7720: fix non-atomic allocation in write path
        USB: serial: mos7840: fix non-atomic allocation in write path
        usb: renesas_usbhs: fix clearing the {BRDY,BEMP}STS condition
        USB: change bInterval default to 10 ms
        usb: gadget: fsl_qe_udc: signedness bug in qe_get_frame()
        USB: serial: cp210x: fix hardware flow-control disable
        usb: misc: legousbtower: Fix NULL pointer deference
        usb: gadget: function: u_ether: don't starve tx request queue
        USB: serial: cp210x: fix tiocmget error handling
        usb: gadget: u_ether: remove interrupt throttling
        usb: chipidea: move the lock initialization to core file
        Fix USB CB/CBI storage devices with CONFIG_VMAP_STACK=y
        ALSA: rawmidi: Fix possible deadlock with virmidi registration
        ALSA: timer: fix NULL pointer dereference in read()/ioctl() race
        ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE
        ALSA: timer: fix NULL pointer dereference on memory allocation failure
        ALSA: ali5451: Fix out-of-bound position reporting
        ALSA: pcm : Call kill_fasync() in stream lock
        zfcp: fix fc_host port_type with NPIV
        zfcp: fix ELS/GS request&response length for hardware data router
        zfcp: close window with unblocked rport during rport gone
        zfcp: retain trace level for SCSI and HBA FSF response records
        zfcp: restore: Dont use 0 to indicate invalid LUN in rec trace
        zfcp: trace on request for open and close of WKA port
        zfcp: restore tracing of handle for port and LUN with HBA records
        zfcp: fix D_ID field with actual value on tracing SAN responses
        zfcp: fix payload trace length for SAN request&response
        zfcp: trace full payload of all SAN records (req,resp,iels)
        scsi: zfcp: spin_lock_irqsave() is not nestable
        scsi: mpt3sas: Fix secure erase premature termination
        scsi: mpt3sas: Unblock device after controller reset
        scsi: mpt3sas: fix hang on ata passthrough commands
        mpt2sas: Fix secure erase premature termination
        scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) devices
        scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression
        scsi: ibmvfc: Fix I/O hang when port is not mapped
        scsi: Fix use-after-free
        scsi: arcmsr: Buffer overflow in arcmsr_iop_message_xfer()
        scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded
        scsi: arcmsr: Send SYNCHRONIZE_CACHE command to firmware
        ext4: validate that metadata blocks do not overlap superblock
        ext4: avoid modifying checksum fields directly during checksum verification
        ext4: use __GFP_NOFAIL in ext4_free_blocks()
        ext4: reinforce check of i_dtime when clearing high fields of uid and gid
        ext4: allow DAX writeback for hole punch
        ext4: sanity check the block and cluster size at mount time
        reiserfs: fix "new_insert_key may be used uninitialized ..."
        reiserfs: Unlock superblock before calling reiserfs_quota_on_mount()
        xfs: fix superblock inprogress check
        libxfs: clean up _calc_dquots_per_chunk
        btrfs: ensure that file descriptor used with subvol ioctls is a dir
        ocfs2/dlm: fix race between convert and migration
        ocfs2: fix start offset to ocfs2_zero_range_for_truncate()
        ubifs: Fix assertion in layout_in_gaps()
        ubifs: Fix xattr_names length in exit paths
        UBIFS: Fix possible memory leak in ubifs_readdir()
        ubifs: Abort readdir upon error
        ubifs: Fix regression in ubifs_readdir()
        UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header
        NFSv4.x: Fix a refcount leak in nfs_callback_up_net
        NFSD: Using free_conn free connection
        NFS: Don't drop CB requests with invalid principals
        NFSv4: Open state recovery must account for file permission changes
        fs/seq_file: fix out-of-bounds read
        fs/super.c: fix race between freeze_super() and thaw_super()
        isofs: Do not return EACCES for unknown filesystems
        hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
        driver core: Delete an unnecessary check before the function call "put_device"
        driver core: fix race between creating/querying glue dir and its cleanup
        drm/radeon: fix radeon_move_blit on 32bit systems
        drm: Reject page_flip for !DRIVER_MODESET
        drm/radeon: Ensure vblank interrupt is enabled on DPMS transition to on
        qxl: check for kmap failures
        Input: i8042 - break load dependency between atkbd/psmouse and i8042
        Input: i8042 - set up shared ps2_cmd_mutex for AUX ports
        Input: ili210x - fix permissions on "calibrate" attribute
        hwrng: exynos - Disable runtime PM on probe failure
        hwrng: omap - Fix assumption that runtime_get_sync will always succeed
        hwrng: omap - Only fail if pm_runtime_get_sync returns < 0
        i2c-eg20t: fix race between i2c init and interrupt enable
        em28xx-i2c: rt_mutex_trylock() returns zero on failure
        i2c: core: fix NULL pointer dereference under race condition
        i2c: at91: fix write transfers by clearing pending interrupt first
        iio: accel: kxsd9: Fix raw read return
        iio: accel: kxsd9: Fix scaling bug
        thermal: hwmon: Properly report critical temperature in sysfs
        cdc-acm: fix wrong pipe type on rx interrupt xfers
        timers: Use proper base migration in add_timer_on()
        EDAC: Increment correct counter in edac_inc_ue_error()
        IB/ipoib: Fix memory corruption in ipoib cm mode connect flow
        IB/core: Fix use after free in send_leave function
        IB/ipoib: Don't allow MC joins during light MC flush
        IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV
        IB/mlx4: Fix create CQ error flow
        IB/uverbs: Fix leak of XRC target QPs
        IB/cm: Mark stale CM id's whenever the mad agent was unregistered
        mtd: blkdevs: fix potential deadlock + lockdep warnings
        mtd: pmcmsp-flash: Allocating too much in init_msp_flash()
        mtd: nand: davinci: Reinitialize the HW ECC engine in 4bit hwctl
        perf symbols: Fixup symbol sizes before picking best ones
        perf: Tighten (and fix) the grouping condition
        tty: Prevent ldisc drivers from re-using stale tty fields
        tty: limit terminal size to 4M chars
        tty: vt, fix bogus division in csi_J
        vt: clear selection before resizing
        drivers/vfio: Rework offsetofend()
        include/stddef.h: Move offsetofend() from vfio.h to a generic kernel header
        stddef.h: move offsetofend inside #ifndef/#endif guard, neaten
        ipv6: don't call fib6_run_gc() until routing is ready
        ipv6: split duplicate address detection and router solicitation timer
        ipv6: move DAD and addrconf_verify processing to workqueue
        ipv6: addrconf: fix dev refcont leak when DAD failed
        ipv6: fix rtnl locking in setsockopt for anycast and multicast
        ip6_gre: fix flowi6_proto value in ip6gre_xmit_other()
        ipv6: correctly add local routes when lo goes up
        ipv6: dccp: fix out of bound access in dccp_v6_err()
        ipv6: dccp: add missing bind_conflict to dccp_ipv6_mapped
        ip6_tunnel: Clear IP6CB in ip6tunnel_xmit()
        ip6_tunnel: disable caching when the traffic class is inherited
        net/irda: handle iriap_register_lsap() allocation failure
        tcp: fix use after free in tcp_xmit_retransmit_queue()
        tcp: properly scale window in tcp_v[46]_reqsk_send_ack()
        tcp: fix overflow in __tcp_retransmit_skb()
        tcp: fix wrong checksum calculation on MTU probing
        tcp: take care of truncations done by sk_filter()
        bonding: Fix bonding crash
        net: ratelimit warnings about dst entry refcount underflow or overflow
        mISDN: Support DR6 indication in mISDNipac driver
        mISDN: Fixing missing validation in base_sock_bind()
        net: disable fragment reassembly if high_thresh is set to zero
        ipvs: count pre-established TCP states as active
        iwlwifi: pcie: fix access to scratch buffer
        svc: Avoid garbage replies when pc_func() returns rpc_drop_reply
        brcmsmac: Free packet if dma_mapping_error() fails in dma_rxfill
        brcmsmac: Initialize power in brcms_c_stf_ss_algo_channel_get()
        brcmfmac: avoid potential stack overflow in brcmf_cfg80211_start_ap()
        pstore: Fix buffer overflow while write offset equal to buffer size
        net/mlx4_core: Allow resetting VF admin mac to zero
        firewire: net: guard against rx buffer overflows
        firewire: net: fix fragmented datagram_size off-by-one
        netfilter: fix namespace handling in nf_log_proc_dostring
        can: bcm: fix warning in bcm_connect/proc_register
        net: fix sk_mem_reclaim_partial()
        net: avoid sk_forward_alloc overflows
        ipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route
        packet: call fanout_release, while UNREGISTERING a netdev
        net: sctp, forbid negative length
        sctp: validate chunk len before actually using it
        net: clear sk_err_soft in sk_clone_lock()
        net: mangle zero checksum in skb_checksum_help()
        dccp: do not send reset to already closed sockets
        dccp: fix out of bound access in dccp_v4_err()
        sctp: assign assoc_id earlier in __sctp_connect
        neigh: check error pointer instead of NULL for ipv4_neigh_lookup()
        ipv4: use new_gw for redirect neigh lookup
        mac80211: fix purging multicast PS buffer queue
        mac80211: discard multicast and 4-addr A-MSDUs
        cfg80211: limit scan results cache size
        mwifiex: printk() overflow with 32-byte SSIDs
        ipv4: Set skb->protocol properly for local output
        net: sky2: Fix shutdown crash
        kaweth: fix firmware download
        tracing: Move mutex to protect against resetting of seq data
        kernel/fork: fix CLONE_CHILD_CLEARTID regression in nscd
        Revert "ipc/sem.c: optimize sem_lock()"
        cfq: fix starvation of asynchronous writes
        drbd: Fix kernel_sendmsg() usage - potential NULL deref
        lib/genalloc.c: start search from start of chunk
        tools/vm/slabinfo: fix an unintentional printf
        rcu: Fix soft lockup for rcu_nocb_kthread
        ratelimit: fix bug in time interval by resetting right begin time
        mfd: core: Fix device reference leak in mfd_clone_cell
        PM / sleep: fix device reference leak in test_suspend
        mmc: mxs: Initialize the spinlock prior to using it
        mmc: block: don't use CMD23 with very old MMC cards
        pstore/core: drop cmpxchg based updates
        pstore/ram: Use memcpy_toio instead of memcpy
        pstore/ram: Use memcpy_fromio() to save old buffer
        mb86a20s: fix the locking logic
        mb86a20s: fix demod settings
        cx231xx: don't return error on success
        cx231xx: fix GPIOs for Pixelview SBTVD hybrid
        gpio: mpc8xxx: Correct irq handler function
        uio: fix dmem_region_start computation
        KEYS: Fix short sprintf buffer in /proc/keys show function
        hv: do not lose pending heartbeat vmbus packets
        staging: iio: ad5933: avoid uninitialized variable in error case
        mei: bus: fix received data size check in NFC fixup
        ACPI / APEI: Fix incorrect return value of ghes_proc()
        PCI: Handle read-only BARs on AMD CS553x devices
        tile: avoid using clocksource_cyc2ns with absolute cycle count
        dm flakey: fix reads to be issued if drop_writes configured
        mm,ksm: fix endless looping in allocating memory when ksm enable
        can: dev: fix deadlock reported after bus-off
        hwmon: (adt7411) set bit 3 in CFG1 register
        mpi: Fix NULL ptr dereference in mpi_powm() [ver #3]
        mfd: 88pm80x: Double shifting bug in suspend/resume
        ASoC: omap-mcpdm: Fix irq resource handling
        regulator: tps65910: Work around silicon erratum SWCZ010
        dm: mark request_queue dead before destroying the DM device
        fbdev/efifb: Fix 16 color palette entry calculation
        metag: Only define atomic_dec_if_positive conditionally
        Linux 3.10.105

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

Conflicts:
	arch/arm/mach-sa1100/generic.c
	arch/arm64/kernel/traps.c
	crypto/blkcipher.c
	drivers/devfreq/devfreq.c
	drivers/usb/dwc3/gadget.c
	drivers/usb/gadget/u_ether.c
	fs/ubifs/dir.c
	include/net/if_inet6.h
	lib/genalloc.c
	net/ipv6/addrconf.c
	net/ipv6/tcp_ipv6.c
	net/wireless/scan.c
	sound/core/timer.c
2018-01-25 17:45:32 -07:00
Nathan Chancellor 88e100f704 This is the 3.10.103 stable release
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Merge 3.10.103 into android-msm-bullhead-3.10-oreo-m5

Changes in 3.10.103: (178 commits)
        X.509: remove possible code fragility: enumeration values not handled
        x86, asmlinkage, apm: Make APM data structure used from assembler visible
        netfilter: x_tables: validate e->target_offset early
        netfilter: x_tables: make sure e->next_offset covers remaining blob size
        netfilter: x_tables: fix unconditional helper
        netfilter: x_tables: don't move to non-existent next rule
        netfilter: x_tables: add and use xt_check_entry_offsets
        netfilter: x_tables: kill check_entry helper
        netfilter: x_tables: assert minimum target size
        netfilter: x_tables: add compat version of xt_check_entry_offsets
        netfilter: x_tables: check standard target size too
        netfilter: x_tables: check for bogus target offset
        netfilter: x_tables: validate all offsets and sizes in a rule
        netfilter: x_tables: don't reject valid target size on some architectures
        netfilter: arp_tables: simplify translate_compat_table args
        netfilter: ip_tables: simplify translate_compat_table args
        netfilter: ip6_tables: simplify translate_compat_table args
        netfilter: x_tables: xt_compat_match_from_user doesn't need a retval
        netfilter: ensure number of counters is >0 in do_replace()
        netfilter: x_tables: do compat validation via translate_table
        Revert "netfilter: ensure number of counters is >0 in do_replace()"
        netfilter: x_tables: introduce and use xt_copy_counters_from_user
        perf/x86: Honor the architectural performance monitoring version
        perf/x86: Fix undefined shift on 32-bit kernels
        signal: remove warning about using SI_TKILL in rt_[tg]sigqueueinfo
        PCI/ACPI: Fix _OSC ordering to allow PCIe hotplug use when available
        udp: properly support MSG_PEEK with truncated buffers
        USB: fix invalid memory access in hub_activate()
        USB: usbfs: fix potential infoleak in devio
        USB: fix up faulty backports
        USB: EHCI: declare hostpc register as zero-length array
        USB: serial: option: add support for Telit LE910 PID 0x1206
        usb: musb: Stop bulk endpoint while queue is rotated
        usb: musb: Ensure rx reinit occurs for shared_fifo endpoints
        usb: renesas_usbhs: protect the CFIFOSEL setting in usbhsg_ep_enable()
        x86/mm: Add barriers and document switch_mm()-vs-flush synchronization
        pipe: limit the per-user amount of pages allocated in pipes
        cdc_ncm: do not call usbnet_link_change from cdc_ncm_bind
        KEYS: potential uninitialized variable
        mm: migrate dirty page without clear_page_dirty_for_io etc
        printk: do cond_resched() between lines while outputting to consoles
        HID: hiddev: validate num_values for HIDIOCGUSAGES, HIDIOCSUSAGES commands
        libceph: apply new_state before new_up_client on incrementals
        tmpfs: don't undo fallocate past its last page
        tmpfs: fix regression hang in fallocate undo
        tcp: make challenge acks less predictable
        tcp: record TLP and ER timer stats in v6 stats
        tcp: consider recv buf for the initial window scale
        MIPS: KVM: Fix mapped fault broken commpage handling
        MIPS: KVM: Add missing gfn range check
        MIPS: KVM: Fix gfn range check in kseg0 tlb faults
        MIPS: KVM: Propagate kseg0/mapped tlb fault errors
        MIPS: math-emu: Fix jalr emulation when rd == $0
        MIPS: Fix siginfo.h to use strict posix types
        MIPS: ath79: make bootconsole wait for both THRE and TEMT
        MIPS: Fix 64k page support for 32 bit kernels.
        MIPS: KVM: Fix modular KVM under QEMU
        Input: uinput - handle compat ioctl for UI_SET_PHYS
        Input: wacom_w8001 - w8001_MAX_LENGTH should be 13
        Input: xpad - validate USB endpoint count during probe
        ath5k: Change led pin configuration for compaq c700 laptop
        aacraid: Relinquish CPU during timeout wait
        aacraid: Fix for aac_command_thread hang
        PCI: Disable all BAR sizing for devices with non-compliant BARs
        rtlwifi: Fix logic error in enter/exit power-save mode
        powerpc/book3s64: Fix branching to OOL handlers in relocatable kernel
        powerpc: Fix definition of SIAR and SDAR registers
        powerpc: Use privileged SPR number for MMCR2
        powerpc/pseries/eeh: Handle RTAS delay requests in configure_bridge
        powerpc/iommu: Remove the dependency on EEH struct in DDW mechanism
        powerpc/pseries: Fix PCI config address for DDW
        powerpc/tm: Always reclaim in start_thread() for exec() class syscalls
        sunrpc: fix stripping of padded MIC tokens
        drm/gma500: Fix possible out of bounds read
        drm/fb_helper: Fix references to dev->mode_config.num_connector
        drm/radeon: fix asic initialization for virtualized environments
        drm/radeon: add a delay after ATPX dGPU power off
        drm/radeon: Poll for both connect/disconnect on analog connectors
        drm/radeon: fix firmware info version checks
        ext4: fix hang when processing corrupted orphaned inode list
        ext4: address UBSAN warning in mb_find_order_for_block()
        ext4: silence UBSAN in ext4_mb_init()
        ext4: verify extent header depth
        ext4: check for extents that wrap around
        ext4: don't call ext4_should_journal_data() on the journal inode
        ext4: short-cut orphan cleanup on error
        ext4: fix reference counting bug on block allocation error
        dma-debug: avoid spinlock recursion when disabling dma-debug
        xfs: xfs_iflush_cluster fails to abort on error
        xfs: fix inode validity check in xfs_iflush_cluster
        xfs: skip stale inodes in xfs_iflush_cluster
        KVM: x86: fix OOPS after invalid KVM_SET_DEBUGREGS
        ARM: fix PTRACE_SETVFPREGS on SMP systems
        arm: oabi compat: add missing access checks
        parisc: Fix pagefault crash in unaligned __get_user() call
        ecryptfs: forbid opening files without mmap handler
        fix d_walk()/non-delayed __d_free() race
        crypto: ux500 - memmove the right size
        crypto: gcm - Filter out async ghash if necessary
        crypto: scatterwalk - Fix test in scatterwalk_done
        sit: correct IP protocol used in ipip6_err
        ipmr/ip6mr: Initialize the last assert time of mfc entries.
        net: alx: Work around the DMA RX overflow issue
        mac80211: mesh: flush mesh paths unconditionally
        mac80211_hwsim: Add missing check for HWSIM_ATTR_SIGNAL
        IB/mlx4: Properly initialize GRH TClass and FlowLabel in AHs
        IB/security: Restrict use of the write() interface
        IB/IPoIB: Don't update neigh validity for unresolved entries
        IB/mlx4: Fix the SQ size of an RC QP
        x86, build: copy ldlinux.c32 to image.iso
        kprobes/x86: Clear TF bit in fault on single-stepping
        x86/amd_nb: Fix boot crash on non-AMD systems
        NFS: Fix another OPEN_DOWNGRADE bug
        mm: Export migrate_page_move_mapping and migrate_page_copy
        UBIFS: Implement ->migratepage()
        cdc_ncm: workaround for EM7455 "silent" data interface
        kvm: Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES
        tracing: Handle NULL formats in hold_module_trace_bprintk_format()
        base: make module_create_drivers_dir race-free
        iio: Fix error handling in iio_trigger_attach_poll_func
        staging: iio: accel: fix error check
        iio: accel: kxsd9: fix the usage of spi_w8r8()
        iio:ad7266: Fix broken regulator error handling
        iio:ad7266: Fix probe deferral for vref
        tty/vt/keyboard: fix OOB access in do_compute_shiftstate()
        ALSA: dummy: Fix a use-after-free at closing
        ALSA: au88x0: Fix calculation in vortex_wtdma_bufshift()
        ALSA: ctl: Stop notification after disconnection
        ALSA: timer: Fix leak in SNDRV_TIMER_IOCTL_PARAMS
        ALSA: timer: Fix leak in events via snd_timer_user_ccallback
        ALSA: timer: Fix leak in events via snd_timer_user_tinterrupt
        scsi: fix race between simultaneous decrements of ->host_failed
        scsi: remove scsi_end_request
        Fix reconnect to not defer smb3 session reconnect long after socket reconnect
        xen/acpi: allow xen-acpi-processor driver to load on Xen 4.7
        s390/seccomp: fix error return for filtered system calls
        fs/nilfs2: fix potential underflow in call to crc32_le
        arc: unwind: warn only once if DW2_UNWIND is disabled
        xen/pciback: Fix conf_space read/write overlap check.
        Revert "ecryptfs: forbid opening files without mmap handler"
        ecryptfs: don't allow mmap when the lower fs doesn't support it
        ARC: use ASL assembler mnemonic
        qeth: delete napi struct when removing a qeth device
        mmc: block: fix packed command header endianness
        can: at91_can: RX queue could get stuck at high bus load
        can: fix oops caused by wrong rtnl dellink usage
        ipr: Clear interrupt on croc/crocodile when running with LSI
        net: mvneta: set real interrupt per packet for tx_done
        sctp: Prevent soft lockup when sctp_accept() is called during a timeout event
        x86/mm: Improve switch_mm() barrier comments
        KEYS: 64-bit MIPS needs to use compat_sys_keyctl for 32-bit userspace
        scsi_lib: correctly retry failed zero length REQ_TYPE_FS commands
        block: fix use-after-free in seq file
        fuse: fix wrong assignment of ->flags in fuse_send_init()
        net/irda: fix NULL pointer dereference on memory allocation failure
        gpio: pca953x: Fix NBANK calculation for PCA9536
        hp-wmi: Fix wifi cannot be hard-unblocked
        s5p-mfc: Set device name for reserved memory region devs
        s5p-mfc: Add release callback for memory region devs
        Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU
        cifs: Check for existing directory when opening file with O_CREAT
        netlabel: add address family checks to netlbl_{sock,req}_delattr()
        balloon: check the number of available pages in leak balloon
        ftrace/recordmcount: Work around for addition of metag magic but not relocations
        metag: Fix __cmpxchg_u32 asm constraint for CMP
        ubi: Make volume resize power cut aware
        ubi: Fix race condition between ubi device creation and udev
        dm flakey: error READ bios during the down_interval
        module: Invalidate signatures on force-loaded modules
        be2iscsi: Fix bogus WARN_ON length check
        squash mm: Export migrate_page_... : also make it non-static
        HID: hid-input: Add parentheses to quell gcc warning
        ALSA: oxygen: Fix logical-not-parentheses warning
        net: rfkill: Do not ignore errors from regulator_enable()
        isdn: hfcpci_softirq: get func return to suppress compiler warning
        stb6100: fix buffer length check in stb6100_write_reg_range()
        spi: spi-xilinx: cleanup a check in xilinx_spi_txrx_bufs()
        Linux 3.10.103

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

Conflicts:
	drivers/usb/core/quirks.c
	fs/fuse/inode.c
	kernel/panic.c
	net/ipv4/tcp_input.c
2018-01-25 17:26:32 -07:00
Nathan Chancellor 1d465ee427 This is the 3.10.99 stable release
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Merge 3.10.99 into android-msm-bullhead-3.10-oreo-m5

Changes in 3.10.99: (80 commits)
        tracepoints: Do not trace when cpu is offline
        drm/ast: Initialized data needed to map fbdev memory
        netfilter: nf_conntrack: fix RCU race in nf_conntrack_find_get
        bcache: unregister reboot notifier if bcache fails to unregister device
        tools: Add a "make all" rule
        drm/radeon: fix hotplug race at startup
        efi: Disable interrupts around EFI calls, not in the epilog/prolog calls
        dm thin metadata: fix bug when taking a metadata snapshot
        dm thin: fix race condition when destroying thin pool workqueue
        can: ems_usb: Fix possible tx overflow
        USB: cp210x: add IDs for GE B650V3 and B850V3 boards
        USB: option: add support for SIM7100E
        USB: option: add "4G LTE usb-modem U901"
        proc: Fix ptrace-based permission checks for accessing task maps
        iw_cxgb3: Fix incorrectly returning error on success
        MIPS: KVM: Fix ASID restoration logic
        MIPS: KVM: Fix CACHE immediate offset sign extension
        MIPS: KVM: Uninit VCPU in vcpu_create error path
        splice: sendfile() at once fails for big files
        Failing to send a CLOSE if file is opened WRONLY and server reboots on a 4.x mount
        unix: correctly track in-flight fds in sending process user_struct
        genirq: Prevent chip buslock deadlock
        clocksource/drivers/vt8500: Increase the minimum delta
        lockd: create NSM handles per net namespace
        devres: fix a for loop bounds check
        wm831x_power: Use IRQF_ONESHOT to request threaded IRQs
        megaraid_sas: Do not use PAGE_SIZE for max_sectors
        megaraid_sas : SMAP restriction--do not access user memory from IOCTL code
        mmc: remove bondage between REQ_META and reliable write
        mac: validate mac_partition is within sector
        ARC: dw2 unwind: Remove falllback linear search thru FDE entries
        vfs: Avoid softlockups with sendfile(2)
        ring-buffer: Update read stamp with first real commit on page
        virtio: fix memory leak of virtio ida cache layers
        mac80211: mesh: fix call_rcu() usage
        RDS: fix race condition when sending a message on unbound socket
        can: sja1000: clear interrupts on start
        sched/core: Remove false-positive warning from wake_up_process()
        sata_sil: disable trim
        dm btree: fix bufio buffer leaks in dm_btree_del() error path
        vgaarb: fix signal handling in vga_get()
        rfkill: copy the name into the rfkill struct
        ses: Fix problems with simple enclosures
        ses: fix additional element traversal bug
        scripts: recordmcount: break hardlinks
        Btrfs: add missing brelse when superblock checksum fails
        Btrfs: igrab inode in writepage
        Btrfs: send, don't BUG_ON() when an empty symlink is found
        Btrfs: fix number of transaction units required to create symlink
        s390: fix normalization bug in exception table sorting
        s390/dasd: prevent incorrect length error under z/VM after PAV changes
        s390/dasd: fix refcount for PAV reassignment
        uml: flush stdout before forking
        uml: fix hostfs mknod()
        media: dvb-core: Don't force CAN_INVERSION_AUTO in oneshot mode
        gspca: ov534/topro: prevent a division by 0
        tda1004x: only update the frontend properties if locked
        dm snapshot: fix hung bios when copy error occurs
        posix-clock: Fix return code on the poll method's error path
        mmc: mmci: fix an ages old detection error
        sparc64: fix incorrect sign extension in sys_sparc64_personality
        drm/vmwgfx: respect 'nomodeset'
        drm/radeon: clean up fujitsu quirks
        drm/radeon: hold reference to fences in radeon_sa_bo_new
        drm/radeon: use post-decrement in error handling
        IB/qib: fix mcast detach when qp not attached
        libceph: don't bail early from try_read() when skipping a message
        cdc-acm:exclude Samsung phone 04e8:685d
        rfkill: fix rfkill_fop_read wait_event usage
        Revert "workqueue: make sure delayed work run in local cpu"
        libata: fix sff host state machine locking while polling
        PCI/AER: Flush workqueue on device remove to avoid use-after-free
        nfs: fix nfs_size_to_loff_t
        KVM: async_pf: do not warn on page allocation failures
        tracing: Fix showing function event in available_events
        sunrpc/cache: fix off-by-one in qword_get()
        kernel/resource.c: fix muxed resource handling in __request_region()
        do_last(): don't let a bogus return value from ->open() et.al. to confuse us
        xen/pcifront: Fix mysterious crashes when NUMA locality information was extracted.
        Linux 3.10.99

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
2018-01-25 17:22:39 -07:00
Steffen Maier 4b106b91a0 scsi: zfcp: trace HBA FSF response by default on dismiss or timedout late response
commit fdb7cee3b9e3c561502e58137a837341f10cbf8b upstream.

At the default trace level, we only trace unsuccessful events including
FSF responses.

zfcp_dbf_hba_fsf_response() only used protocol status and FSF status to
decide on an unsuccessful response. However, this is only one of multiple
possible sources determining a failed struct zfcp_fsf_req.

An FSF request can also "fail" if its response runs into an ERP timeout
or if it gets dismissed because a higher level recovery was triggered
[trace tags "erscf_1" or "erscf_2" in zfcp_erp_strategy_check_fsfreq()].
FSF requests with ERP timeout are:
FSF_QTCB_EXCHANGE_CONFIG_DATA, FSF_QTCB_EXCHANGE_PORT_DATA,
FSF_QTCB_OPEN_PORT_WITH_DID or FSF_QTCB_CLOSE_PORT or
FSF_QTCB_CLOSE_PHYSICAL_PORT for target ports,
FSF_QTCB_OPEN_LUN, FSF_QTCB_CLOSE_LUN.
One example is slow queue processing which can cause follow-on errors,
e.g. FSF_PORT_ALREADY_OPEN after FSF_QTCB_OPEN_PORT_WITH_DID timed out.
In order to see the root cause, we need to see late responses even if the
channel presented them successfully with FSF_PROT_GOOD and FSF_GOOD.
Example trace records formatted with zfcpdbf from the s390-tools package:

Timestamp      : ...
Area           : REC
Subarea        : 00
Level          : 1
Exception      : -
CPU ID         : ..
Caller         : ...
Record ID      : 1
Tag            : fcegpf1
LUN            : 0xffffffffffffffff
WWPN           : 0x<WWPN>
D_ID           : 0x00<D_ID>
Adapter status : 0x5400050b
Port status    : 0x41200000
LUN status     : 0x00000000
Ready count    : 0x00000001
Running count  : 0x...
ERP want       : 0x02				ZFCP_ERP_ACTION_REOPEN_PORT
ERP need       : 0x02				ZFCP_ERP_ACTION_REOPEN_PORT
|
Timestamp      : ...				30 seconds later
Area           : REC
Subarea        : 00
Level          : 1
Exception      : -
CPU ID         : ..
Caller         : ...
Record ID      : 2
Tag            : erscf_2
LUN            : 0xffffffffffffffff
WWPN           : 0x<WWPN>
D_ID           : 0x00<D_ID>
Adapter status : 0x5400050b
Port status    : 0x41200000
LUN status     : 0x00000000
Request ID     : 0x<request_ID>
ERP status     : 0x10000000			ZFCP_STATUS_ERP_TIMEDOUT
ERP step       : 0x0800				ZFCP_ERP_STEP_PORT_OPENING
ERP action     : 0x02				ZFCP_ERP_ACTION_REOPEN_PORT
ERP count      : 0x00
|
Timestamp      : ...				later than previous record
Area           : HBA
Subarea        : 00
Level          : 5	> default level		=> 3	<= default level
Exception      : -
CPU ID         : 00
Caller         : ...
Record ID      : 1
Tag            : fs_qtcb			=> fs_rerr
Request ID     : 0x<request_ID>
Request status : 0x00001010			ZFCP_STATUS_FSFREQ_DISMISSED
						| ZFCP_STATUS_FSFREQ_CLEANUP
FSF cmnd       : 0x00000005
FSF sequence no: 0x...
FSF issued     : ...				> 30 seconds ago
FSF stat       : 0x00000000			FSF_GOOD
FSF stat qual  : 00000000 00000000 00000000 00000000
Prot stat      : 0x00000001			FSF_PROT_GOOD
Prot stat qual : 00000000 00000000 00000000 00000000
Port handle    : 0x...
LUN handle     : 0x00000000
QTCB log length: ...
QTCB log info  : ...

In case of problems detecting that new responses are waiting on the input
queue, we sooner or later trigger adapter recovery due to an FSF request
timeout (trace tag "fsrth_1").
FSF requests with FSF request timeout are:
typically FSF_QTCB_ABORT_FCP_CMND; but theoretically also
FSF_QTCB_EXCHANGE_CONFIG_DATA or FSF_QTCB_EXCHANGE_PORT_DATA via sysfs,
FSF_QTCB_OPEN_PORT_WITH_DID or FSF_QTCB_CLOSE_PORT for WKA ports,
FSF_QTCB_FCP_CMND for task management function (LUN / target reset).
One or more pending requests can meanwhile have FSF_PROT_GOOD and FSF_GOOD
because the channel filled in the response via DMA into the request's QTCB.

In a theroretical case, inject code can create an erroneous FSF request
on purpose. If data router is enabled, it uses deferred error reporting.
A READ SCSI command can succeed with FSF_PROT_GOOD, FSF_GOOD, and
SAM_STAT_GOOD. But on writing the read data to host memory via DMA,
it can still fail, e.g. if an intentionally wrong scatter list does not
provide enough space. Rather than getting an unsuccessful response,
we get a QDIO activate check which in turn triggers adapter recovery.
One or more pending requests can meanwhile have FSF_PROT_GOOD and FSF_GOOD
because the channel filled in the response via DMA into the request's QTCB.
Example trace records formatted with zfcpdbf from the s390-tools package:

Timestamp      : ...
Area           : HBA
Subarea        : 00
Level          : 6	> default level		=> 3	<= default level
Exception      : -
CPU ID         : ..
Caller         : ...
Record ID      : 1
Tag            : fs_norm			=> fs_rerr
Request ID     : 0x<request_ID2>
Request status : 0x00001010			ZFCP_STATUS_FSFREQ_DISMISSED
						| ZFCP_STATUS_FSFREQ_CLEANUP
FSF cmnd       : 0x00000001
FSF sequence no: 0x...
FSF issued     : ...
FSF stat       : 0x00000000			FSF_GOOD
FSF stat qual  : 00000000 00000000 00000000 00000000
Prot stat      : 0x00000001			FSF_PROT_GOOD
Prot stat qual : ........ ........ 00000000 00000000
Port handle    : 0x...
LUN handle     : 0x...
|
Timestamp      : ...
Area           : SCSI
Subarea        : 00
Level          : 3
Exception      : -
CPU ID         : ..
Caller         : ...
Record ID      : 1
Tag            : rsl_err
Request ID     : 0x<request_ID2>
SCSI ID        : 0x...
SCSI LUN       : 0x...
SCSI result    : 0x000e0000			DID_TRANSPORT_DISRUPTED
SCSI retries   : 0x00
SCSI allowed   : 0x05
SCSI scribble  : 0x<request_ID2>
SCSI opcode    : 28...				Read(10)
FCP rsp inf cod: 0x00
FCP rsp IU     : 00000000 00000000 00000000 00000000
                                         ^^	SAM_STAT_GOOD
                 00000000 00000000

Only with luck in both above cases, we could see a follow-on trace record
of an unsuccesful event following a successful but late FSF response with
FSF_PROT_GOOD and FSF_GOOD. Typically this was the case for I/O requests
resulting in a SCSI trace record "rsl_err" with DID_TRANSPORT_DISRUPTED
[On ZFCP_STATUS_FSFREQ_DISMISSED, zfcp_fsf_protstatus_eval() sets
ZFCP_STATUS_FSFREQ_ERROR seen by the request handler functions as failure].
However, the reason for this follow-on trace was invisible because the
corresponding HBA trace record was missing at the default trace level
(by default hidden records with tags "fs_norm", "fs_qtcb", or "fs_open").

On adapter recovery, after we had shut down the QDIO queues, we perform
unsuccessful pseudo completions with flag ZFCP_STATUS_FSFREQ_DISMISSED
for each pending FSF request in zfcp_fsf_req_dismiss_all().
In order to find the root cause, we need to see all pseudo responses even
if the channel presented them successfully with FSF_PROT_GOOD and FSF_GOOD.

Therefore, check zfcp_fsf_req.status for ZFCP_STATUS_FSFREQ_DISMISSED
or ZFCP_STATUS_FSFREQ_ERROR and trace with a new tag "fs_rerr".

It does not matter that there are numerous places which set
ZFCP_STATUS_FSFREQ_ERROR after the location where we trace an FSF response
early. These cases are based on protocol status != FSF_PROT_GOOD or
== FSF_PROT_FSF_STATUS_PRESENTED and are thus already traced by default
as trace tag "fs_perr" or "fs_ferr" respectively.

NB: The trace record with tag "fssrh_1" for status read buffers on dismiss
all remains. zfcp_fsf_req_complete() handles this and returns early.
All other FSF request types are handled separately and as described above.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 8a36e4532e ("[SCSI] zfcp: enhancement of zfcp debug features")
Fixes: 2e261af84c ("[SCSI] zfcp: Only collect FSF/HBA debug data for matching trace levels")
Cc: <stable@vger.kernel.org> #2.6.38+
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-11-02 07:09:50 +01:00
Steffen Maier bb5cf573ea scsi: zfcp: fix payload with full FCP_RSP IU in SCSI trace records
commit 12c3e5754c8022a4f2fd1e9f00d19e99ee0d3cc1 upstream.

If the FCP_RSP UI has optional parts (FCP_SNS_INFO or FCP_RSP_INFO) and
thus does not fit into the fsp_rsp field built into a SCSI trace record,
trace the full FCP_RSP UI with all optional parts as payload record
instead of just FCP_SNS_INFO as payload and
a 1 byte RSP_INFO_CODE part of FCP_RSP_INFO built into the SCSI record.

That way we would also get the full FCP_SNS_INFO in case a
target would ever send more than
min(SCSI_SENSE_BUFFERSIZE==96, ZFCP_DBF_PAY_MAX_REC==256)==96.

The mandatory part of FCP_RSP IU is only 24 bytes.
PAYload costs at least one full PAY record of 256 bytes anyway.
We cap to the hardware response size which is only FSF_FCP_RSP_SIZE==128.
So we can just put the whole FCP_RSP IU with any optional parts into
PAYload similarly as we do for SAN PAY since v4.9 commit aceeffbb59bb
("zfcp: trace full payload of all SAN records (req,resp,iels)").
This does not cause any additional trace records wasting memory.

Decoded trace records were confusing because they showed a hard-coded
sense data length of 96 even if the FCP_RSP_IU field FCP_SNS_LEN showed
actually less.

Since the same commit, we set pl_len for SAN traces to the full length of a
request/response even if we cap the corresponding trace.
In contrast, here for SCSI traces we set pl_len to the pre-computed
length of FCP_RSP IU considering SNS_LEN or RSP_LEN if valid.
Nonetheless we trace a hardcoded payload of length FSF_FCP_RSP_SIZE==128
if there were optional parts.
This makes it easier for the zfcpdbf tool to format only the relevant
part of the long FCP_RSP UI buffer. And any trailing information is still
available in the payload trace record just in case.

Rename the payload record tag from "fcp_sns" to "fcp_riu" to make the new
content explicit to zfcpdbf which can then pick a suitable field name such
as "FCP rsp IU all:" instead of "Sense info :"
Also, the same zfcpdbf can still be backwards compatible with "fcp_sns".

Old example trace record before this fix, formatted with the tool zfcpdbf
from s390-tools:

Timestamp      : ...
Area           : SCSI
Subarea        : 00
Level          : 3
Exception      : -
CPU id         : ..
Caller         : 0x...
Record id      : 1
Tag            : rsl_err
Request id     : 0x<request_id>
SCSI ID        : 0x...
SCSI LUN       : 0x...
SCSI result    : 0x00000002
SCSI retries   : 0x00
SCSI allowed   : 0x05
SCSI scribble  : 0x<request_id>
SCSI opcode    : 00000000 00000000 00000000 00000000
FCP rsp inf cod: 0x00
FCP rsp IU     : 00000000 00000000 00000202 00000000
                                       ^^==FCP_SNS_LEN_VALID
                 00000020 00000000
                 ^^^^^^^^==FCP_SNS_LEN==32
Sense len      : 96 <==min(SCSI_SENSE_BUFFERSIZE,ZFCP_DBF_PAY_MAX_REC)
Sense info     : 70000600 00000018 00000000 29000000
                 00000400 00000000 00000000 00000000
                 00000000 00000000 00000000 00000000<==superfluous
                 00000000 00000000 00000000 00000000<==superfluous
                 00000000 00000000 00000000 00000000<==superfluous
                 00000000 00000000 00000000 00000000<==superfluous

New example trace records with this fix:

Timestamp      : ...
Area           : SCSI
Subarea        : 00
Level          : 3
Exception      : -
CPU ID         : ..
Caller         : 0x...
Record ID      : 1
Tag            : rsl_err
Request ID     : 0x<request_id>
SCSI ID        : 0x...
SCSI LUN       : 0x...
SCSI result    : 0x00000002
SCSI retries   : 0x00
SCSI allowed   : 0x03
SCSI scribble  : 0x<request_id>
SCSI opcode    : a30c0112 00000000 02000000 00000000
FCP rsp inf cod: 0x00
FCP rsp IU     : 00000000 00000000 00000a02 00000200
                 00000020 00000000
FCP rsp IU len : 56
FCP rsp IU all : 00000000 00000000 00000a02 00000200
                                       ^^=FCP_RESID_UNDER|FCP_SNS_LEN_VALID
                 00000020 00000000 70000500 00000018
                 ^^^^^^^^==FCP_SNS_LEN
                                   ^^^^^^^^^^^^^^^^^
                 00000000 240000cb 00011100 00000000
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                 00000000 00000000
                 ^^^^^^^^^^^^^^^^^==FCP_SNS_INFO

Timestamp      : ...
Area           : SCSI
Subarea        : 00
Level          : 1
Exception      : -
CPU ID         : ..
Caller         : 0x...
Record ID      : 1
Tag            : lr_okay
Request ID     : 0x<request_id>
SCSI ID        : 0x...
SCSI LUN       : 0x...
SCSI result    : 0x00000000
SCSI retries   : 0x00
SCSI allowed   : 0x05
SCSI scribble  : 0x<request_id>
SCSI opcode    : <CDB of unrelated SCSI command passed to eh handler>
FCP rsp inf cod: 0x00
FCP rsp IU     : 00000000 00000000 00000100 00000000
                 00000000 00000008
FCP rsp IU len : 32
FCP rsp IU all : 00000000 00000000 00000100 00000000
                                       ^^==FCP_RSP_LEN_VALID
                 00000000 00000008 00000000 00000000
                          ^^^^^^^^==FCP_RSP_LEN
                                   ^^^^^^^^^^^^^^^^^==FCP_RSP_INFO

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 250a1352b9 ("[SCSI] zfcp: Redesign of the debug tracing for SCSI records.")
Cc: <stable@vger.kernel.org> #2.6.38+
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-11-02 07:09:49 +01:00
Steffen Maier 2c7bfb3408 scsi: zfcp: fix missing trace records for early returns in TMF eh handlers
commit 1a5d999ebfc7bfe28deb48931bb57faa8e4102b6 upstream.

For problem determination we need to see that we were in scsi_eh
as well as whether and why we were successful or not.

The following commits introduced new early returns without adding
a trace record:

v2.6.35 commit a1dbfddd02
("[SCSI] zfcp: Pass return code from fc_block_scsi_eh to scsi eh")
on fc_block_scsi_eh() returning != 0 which is FAST_IO_FAIL,

v2.6.30 commit 63caf367e1
("[SCSI] zfcp: Improve reliability of SCSI eh handlers in zfcp")
on not having gotten an FSF request after the maximum number of retry
attempts and thus could not issue a TMF and has to return FAILED.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: a1dbfddd02 ("[SCSI] zfcp: Pass return code from fc_block_scsi_eh to scsi eh")
Fixes: 63caf367e1 ("[SCSI] zfcp: Improve reliability of SCSI eh handlers in zfcp")
Cc: <stable@vger.kernel.org> #2.6.38+
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-11-02 07:09:44 +01:00
Benjamin Block e7ab3bd99e scsi: zfcp: add handling for FCP_RESID_OVER to the fcp ingress path
commit a099b7b1fc1f0418ab8d79ecf98153e1e134656e upstream.

Up until now zfcp would just ignore the FCP_RESID_OVER flag in the FCP
response IU. When this flag is set, it is possible, in regards to the
FCP standard, that the storage-server processes the command normally, up
to the point where data is missing and simply ignores those.

In this case no CHECK CONDITION would be set, and because we ignored the
FCP_RESID_OVER flag we resulted in at least a data loss or even
-corruption as a follow-up error, depending on how the
applications/layers on top behave. To prevent this, we now set the
host-byte of the corresponding scsi_cmnd to DID_ERROR.

Other storage-behaviors, where the same condition results in a CHECK
CONDITION set in the answer, don't need to be changed as they are
handled in the mid-layer already.

Following is an example trace record decoded with zfcpdbf from the
s390-tools package. We forcefully injected a fc_dl which is one byte too
small:

Timestamp      : ...
Area           : SCSI
Subarea        : 00
Level          : 3
Exception      : -
CPU ID         : ..
Caller         : 0x...
Record ID      : 1
Tag            : rsl_err
Request ID     : 0x...
SCSI ID        : 0x...
SCSI LUN       : 0x...
SCSI result    : 0x00070000
                     ^^DID_ERROR
SCSI retries   : 0x..
SCSI allowed   : 0x..
SCSI scribble  : 0x...
SCSI opcode    : 2a000000 00000000 08000000 00000000
FCP rsp inf cod: 0x00
FCP rsp IU     : 00000000 00000000 00000400 00000001
                                       ^^fr_flags==FCP_RESID_OVER
                                         ^^fr_status==SAM_STAT_GOOD
                                            ^^^^^^^^fr_resid
                 00000000 00000000

As of now, we don't actively handle to possibility that a response IU
has both flags - FCP_RESID_OVER and FCP_RESID_UNDER - set at once.

Reported-by: Luke M. Hopkins <lmhopkin@us.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 553448f6c4 ("[SCSI] zfcp: Message cleanup")
Fixes: ea127f975424 ("[PATCH] s390 (7/7): zfcp host adapter.") (tglx/history.git)
Cc: <stable@vger.kernel.org> #2.6.33+
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-11-01 22:12:44 +01:00
Steffen Maier f609dac650 scsi: zfcp: fix queuecommand for scsi_eh commands when DIX enabled
commit 71b8e45da51a7b64a23378221c0a5868bd79da4f upstream.

Since commit db007fc5e2 ("[SCSI] Command protection operation"),
scsi_eh_prep_cmnd() saves scmd->prot_op and temporarily resets it to
SCSI_PROT_NORMAL.
Other FCP LLDDs such as qla2xxx and lpfc shield their queuecommand()
to only access any of scsi_prot_sg...() if
(scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL).

Do the same thing for zfcp, which introduced DIX support with
commit ef3eb71d8b ("[SCSI] zfcp: Introduce experimental support for
DIF/DIX").

Otherwise, TUR SCSI commands as part of scsi_eh likely fail in zfcp,
because the regular SCSI command with DIX protection data, that scsi_eh
re-uses in scsi_send_eh_cmnd(), of course still has
(scsi_prot_sg_count() != 0) and so zfcp sends down bogus requests to the
FCP channel hardware.

This causes scsi_eh_test_devices() to have (finish_cmds == 0)
[not SCSI device is online or not scsi_eh_tur() failed]
so regular SCSI commands, that caused / were affected by scsi_eh,
are moved to work_q and scsi_eh_test_devices() itself returns false.
In turn, it unnecessarily escalates in our case in scsi_eh_ready_devs()
beyond host reset to finally scsi_eh_offline_sdevs()
which sets affected SCSI devices offline with the following kernel message:

"kernel: sd H:0:T:L: Device offlined - not ready after error recovery"

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: ef3eb71d8b ("[SCSI] zfcp: Introduce experimental support for DIF/DIX")
Cc: <stable@vger.kernel.org> #2.6.36+
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-11-01 22:12:44 +01:00
Gerald Schaefer 8cfc539f62 s390/vmlogrdr: fix IUCV buffer allocation
commit 5457e03de918f7a3e294eb9d26a608ab8a579976 upstream.

The buffer for iucv_message_receive() needs to be below 2 GB. In
__iucv_message_receive(), the buffer address is casted to an u32, which
would result in either memory corruption or an addressing exception when
using addresses >= 2 GB.

Fix this by using GFP_DMA for the buffer allocation.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-06-20 14:03:24 +02:00
Julian Wiedmann 8e68a4d13a s390/qdio: clear DSCI prior to scanning multiple input queues
commit 1e4a382fdc0ba8d1a85b758c0811de3a3631085e upstream.

For devices with multiple input queues, tiqdio_call_inq_handlers()
iterates over all input queues and clears the device's DSCI
during each iteration. If the DSCI is re-armed during one
of the later iterations, we therefore do not scan the previous
queues again.
The re-arming also raises a new adapter interrupt. But its
handler does not trigger a rescan for the device, as the DSCI
has already been erroneously cleared.
This can result in queue stalls on devices with multiple
input queues.

Fix it by clearing the DSCI just once, prior to scanning the queues.

As the code is moved in front of the loop, we also need to access
the DSCI directly (ie irq->dsci) instead of going via each queue's
parent pointer to the same irq. This is not a functional change,
and a follow-up patch will clean up the other users.

In practice, this bug only affects CQ-enabled HiperSockets devices,
ie. devices with sysfs-attribute "hsuid" set. Setting a hsuid is
needed for AF_IUCV socket applications that use HiperSockets
communication.

Fixes: 104ea556ee ("qdio: support asynchronous delivery of storage blocks")
Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-06-08 00:47:02 +02:00
Steffen Maier 01e26ca64b scsi: zfcp: fix use-after-free by not tracing WKA port open/close on failed send
commit 2dfa6688aafdc3f74efeb1cf05fb871465d67f79 upstream.

Dan Carpenter kindly reported:
<quote>
The patch d27a7cb91960: "zfcp: trace on request for open and close of
WKA port" from Aug 10, 2016, leads to the following static checker
warning:

	drivers/s390/scsi/zfcp_fsf.c:1615 zfcp_fsf_open_wka_port()
	warn: 'req' was already freed.

drivers/s390/scsi/zfcp_fsf.c
  1609          zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
  1610          retval = zfcp_fsf_req_send(req);
  1611          if (retval)
  1612                  zfcp_fsf_req_free(req);
                                          ^^^
Freed.

  1613  out:
  1614          spin_unlock_irq(&qdio->req_q_lock);
  1615          if (req && !IS_ERR(req))
  1616                  zfcp_dbf_rec_run_wka("fsowp_1", wka_port, req->req_id);
                                                                  ^^^^^^^^^^^
Use after free.

  1617          return retval;
  1618  }

Same thing for zfcp_fsf_close_wka_port() as well.
</quote>

Rather than relying on req being NULL (or ERR_PTR) for all cases where
we don't want to trace or should not trace,
simply check retval which is unconditionally initialized with -EIO != 0
and it can only become 0 on successful retval = zfcp_fsf_req_send(req).
With that we can also remove the then again unnecessary unconditional
initialization of req which was introduced with that earlier commit.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: d27a7cb91960 ("zfcp: trace on request for open and close of WKA port")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-06-08 00:46:58 +02:00
Steffen Maier 1c2287b99f scsi: zfcp: fix rport unblock race with LUN recovery
commit 6f2ce1c6af37191640ee3ff6e8fc39ea10352f4c upstream.

It is unavoidable that zfcp_scsi_queuecommand() has to finish requests
with DID_IMM_RETRY (like fc_remote_port_chkready()) during the time
window when zfcp detected an unavailable rport but
fc_remote_port_delete(), which is asynchronous via
zfcp_scsi_schedule_rport_block(), has not yet blocked the rport.

However, for the case when the rport becomes available again, we should
prevent unblocking the rport too early.  In contrast to other FCP LLDDs,
zfcp has to open each LUN with the FCP channel hardware before it can
send I/O to a LUN.  So if a port already has LUNs attached and we
unblock the rport just after port recovery, recoveries of LUNs behind
this port can still be pending which in turn force
zfcp_scsi_queuecommand() to unnecessarily finish requests with
DID_IMM_RETRY.

This also opens a time window with unblocked rport (until the followup
LUN reopen recovery has finished).  If a scsi_cmnd timeout occurs during
this time window fc_timed_out() cannot work as desired and such command
would indeed time out and trigger scsi_eh. This prevents a clean and
timely path failover.  This should not happen if the path issue can be
recovered on FC transport layer such as path issues involving RSCNs.

Fix this by only calling zfcp_scsi_schedule_rport_register(), to
asynchronously trigger fc_remote_port_add(), after all LUN recoveries as
children of the rport have finished and no new recoveries of equal or
higher order were triggered meanwhile.  Finished intentionally includes
any recovery result no matter if successful or failed (still unblock
rport so other successful LUNs work).  For simplicity, we check after
each finished LUN recovery if there is another LUN recovery pending on
the same port and then do nothing.  We handle the special case of a
successful recovery of a port without LUN children the same way without
changing this case's semantics.

For debugging we introduce 2 new trace records written if the rport
unblock attempt was aborted due to still unfinished or freshly triggered
recovery. The records are only written above the default trace level.

Benjamin noticed the important special case of new recovery that can be
triggered between having given up the erp_lock and before calling
zfcp_erp_action_cleanup() within zfcp_erp_strategy().  We must avoid the
following sequence:

ERP thread                 rport_work      other context
-------------------------  --------------  --------------------------------
port is unblocked, rport still blocked,
 due to pending/running ERP action,
 so ((port->status & ...UNBLOCK) != 0)
 and (port->rport == NULL)
unlock ERP
zfcp_erp_action_cleanup()
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_erp_try_rport_unblock()
((status & ...UNBLOCK) != 0) [OLD!]
                                           zfcp_erp_port_reopen()
                                           lock ERP
                                           zfcp_erp_port_block()
                                           port->status clear ...UNBLOCK
                                           unlock ERP
                                           zfcp_scsi_schedule_rport_block()
                                           port->rport_task = RPORT_DEL
                                           queue_work(rport_work)
                           zfcp_scsi_rport_work()
                           (port->rport_task != RPORT_ADD)
                           port->rport_task = RPORT_NONE
                           zfcp_scsi_rport_block()
                           if (!port->rport) return
zfcp_scsi_schedule_rport_register()
port->rport_task = RPORT_ADD
queue_work(rport_work)
                           zfcp_scsi_rport_work()
                           (port->rport_task == RPORT_ADD)
                           port->rport_task = RPORT_NONE
                           zfcp_scsi_rport_register()
                           (port->rport == NULL)
                           rport = fc_remote_port_add()
                           port->rport = rport;

Now the rport was erroneously unblocked while the zfcp_port is blocked.
This is another situation we want to avoid due to scsi_eh
potential. This state would at least remain until the new recovery from
the other context finished successfully, or potentially forever if it
failed.  In order to close this race, we take the erp_lock inside
zfcp_erp_try_rport_unblock() when checking the status of zfcp_port or
LUN.  With that, the possible corresponding rport state sequences would
be: (unblock[ERP thread],block[other context]) if the ERP thread gets
erp_lock first and still sees ((port->status & ...UNBLOCK) != 0),
(block[other context],NOP[ERP thread]) if the ERP thread gets erp_lock
after the other context has already cleard ...UNBLOCK from port->status.

Since checking fields of struct erp_action is unsafe because they could
have been overwritten (re-used for new recovery) meanwhile, we only
check status of zfcp_port and LUN since these are only changed under
erp_lock elsewhere. Regarding the check of the proper status flags (port
or port_forced are similar to the shown adapter recovery):

[zfcp_erp_adapter_shutdown()]
zfcp_erp_adapter_reopen()
 zfcp_erp_adapter_block()
  * clear UNBLOCK ---------------------------------------+
 zfcp_scsi_schedule_rports_block()                       |
 write_lock_irqsave(&adapter->erp_lock, flags);-------+  |
 zfcp_erp_action_enqueue()                            |  |
  zfcp_erp_setup_act()                                |  |
   * set ERP_INUSE -----------------------------------|--|--+
 write_unlock_irqrestore(&adapter->erp_lock, flags);--+  |  |
.context-switch.                                         |  |
zfcp_erp_thread()                                        |  |
 zfcp_erp_strategy()                                     |  |
  write_lock_irqsave(&adapter->erp_lock, flags);------+  |  |
  ...                                                 |  |  |
  zfcp_erp_strategy_check_target()                    |  |  |
   zfcp_erp_strategy_check_adapter()                  |  |  |
    zfcp_erp_adapter_unblock()                        |  |  |
     * set UNBLOCK -----------------------------------|--+  |
  zfcp_erp_action_dequeue()                           |     |
   * clear ERP_INUSE ---------------------------------|-----+
  ...                                                 |
  write_unlock_irqrestore(&adapter->erp_lock, flags);-+

Hence, we should check for both UNBLOCK and ERP_INUSE because they are
interleaved.  Also we need to explicitly check ERP_FAILED for the link
down case which currently does not clear the UNBLOCK flag in
zfcp_fsf_link_down_info_eval().

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 8830271c48 ("[SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport")
Fixes: a2fa0aede0 ("[SCSI] zfcp: Block FC transport rports early on errors")
Fixes: 5f852be9e1 ("[SCSI] zfcp: Fix deadlock between zfcp ERP and SCSI")
Fixes: 338151e066 ("[SCSI] zfcp: make use of fc_remote_port_delete when target port is unavailable")
Fixes: 3859f6a248 ("[PATCH] zfcp: add rports to enable scsi_add_device to work again")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-06-08 00:46:49 +02:00
Steffen Maier 5d35a96311 scsi: zfcp: do not trace pure benign residual HBA responses at default level
commit 56d23ed7adf3974f10e91b643bd230e9c65b5f79 upstream.

Since quite a while, Linux issues enough SCSI commands per scsi_device
which successfully return with FCP_RESID_UNDER, FSF_FCP_RSP_AVAILABLE,
and SAM_STAT_GOOD.  This floods the HBA trace area and we cannot see
other and important HBA trace records long enough.

Therefore, do not trace HBA response errors for pure benign residual
under counts at the default trace level.

This excludes benign residual under count combined with other validity
bits set in FCP_RSP_IU, such as FCP_SNS_LEN_VAL.  For all those other
cases, we still do want to see both the HBA record and the corresponding
SCSI record by default.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: a54ca0f62f ("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-06-08 00:46:49 +02:00
Benjamin Block 54539504f0 scsi: zfcp: fix use-after-"free" in FC ingress path after TMF
commit dac37e15b7d511e026a9313c8c46794c144103cd upstream.

When SCSI EH invokes zFCP's callbacks for eh_device_reset_handler() and
eh_target_reset_handler(), it expects us to relent the ownership over
the given scsi_cmnd and all other scsi_cmnds within the same scope - LUN
or target - when returning with SUCCESS from the callback ('release'
them).  SCSI EH can then reuse those commands.

We did not follow this rule to release commands upon SUCCESS; and if
later a reply arrived for one of those supposed to be released commands,
we would still make use of the scsi_cmnd in our ingress tasklet. This
will at least result in undefined behavior or a kernel panic because of
a wrong kernel pointer dereference.

To fix this, we NULLify all pointers to scsi_cmnds (struct zfcp_fsf_req
*)->data in the matching scope if a TMF was successful. This is done
under the locks (struct zfcp_adapter *)->abort_lock and (struct
zfcp_reqlist *)->lock to prevent the requests from being removed from
the request-hashtable, and the ingress tasklet from making use of the
scsi_cmnd-pointer in zfcp_fsf_fcp_cmnd_handler().

For cases where a reply arrives during SCSI EH, but before we get a
chance to NULLify the pointer - but before we return from the callback
-, we assume that the code is protected from races via the CAS operation
in blk_complete_request() that is called in scsi_done().

The following stacktrace shows an example for a crash resulting from the
previous behavior:

Unable to handle kernel pointer dereference at virtual kernel address fffffee17a672000
Oops: 0038 [#1] SMP
CPU: 2 PID: 0 Comm: swapper/2 Not tainted
task: 00000003f7ff5be0 ti: 00000003f3d38000 task.ti: 00000003f3d38000
Krnl PSW : 0404d00180000000 00000000001156b0 (smp_vcpu_scheduled+0x18/0x40)
           R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 EA:3
Krnl GPRS: 000000200000007e 0000000000000000 fffffee17a671fd8 0000000300000015
           ffffffff80000000 00000000005dfde8 07000003f7f80e00 000000004fa4e800
           000000036ce8d8f8 000000036ce8d9c0 00000003ece8fe00 ffffffff969c9e93
           00000003fffffffd 000000036ce8da10 00000000003bf134 00000003f3b07918
Krnl Code: 00000000001156a2: a7190000        lghi    %r1,0
           00000000001156a6: a7380015        lhi    %r3,21
          #00000000001156aa: e32050000008    ag    %r2,0(%r5)
          >00000000001156b0: 482022b0        lh    %r2,688(%r2)
           00000000001156b4: ae123000        sigp    %r1,%r2,0(%r3)
           00000000001156b8: b2220020        ipm    %r2
           00000000001156bc: 8820001c        srl    %r2,28
           00000000001156c0: c02700000001    xilf    %r2,1
Call Trace:
([<0000000000000000>] 0x0)
 [<000003ff807bdb8e>] zfcp_fsf_fcp_cmnd_handler+0x3de/0x490 [zfcp]
 [<000003ff807be30a>] zfcp_fsf_req_complete+0x252/0x800 [zfcp]
 [<000003ff807c0a48>] zfcp_fsf_reqid_check+0xe8/0x190 [zfcp]
 [<000003ff807c194e>] zfcp_qdio_int_resp+0x66/0x188 [zfcp]
 [<000003ff80440c64>] qdio_kick_handler+0xdc/0x310 [qdio]
 [<000003ff804463d0>] __tiqdio_inbound_processing+0xf8/0xcd8 [qdio]
 [<0000000000141fd4>] tasklet_action+0x9c/0x170
 [<0000000000141550>] __do_softirq+0xe8/0x258
 [<000000000010ce0a>] do_softirq+0xba/0xc0
 [<000000000014187c>] irq_exit+0xc4/0xe8
 [<000000000046b526>] do_IRQ+0x146/0x1d8
 [<00000000005d6a3c>] io_return+0x0/0x8
 [<00000000005d6422>] vtime_stop_cpu+0x4a/0xa0
([<0000000000000000>] 0x0)
 [<0000000000103d8a>] arch_cpu_idle+0xa2/0xb0
 [<0000000000197f94>] cpu_startup_entry+0x13c/0x1f8
 [<0000000000114782>] smp_start_secondary+0xda/0xe8
 [<00000000005d6efe>] restart_int_handler+0x56/0x6c
 [<0000000000000000>] 0x0
Last Breaking-Event-Address:
 [<00000000003bf12e>] arch_spin_lock_wait+0x56/0xb0

Suggested-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Fixes: ea127f9754 ("[PATCH] s390 (7/7): zfcp host adapter.") (tglx/history.git)
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-06-08 00:46:49 +02:00
Dan Carpenter 7ddb258493 scsi: zfcp: spin_lock_irqsave() is not nestable
commit e7cb08e894a0b876443ef8fdb0706575dc00a5d2 upstream.

We accidentally overwrite the original saved value of "flags" so that we
can't re-enable IRQs at the end of the function.  Presumably this
function is mostly called with IRQs disabled or it would be obvious in
testing.

Fixes: aceeffbb59bb ("zfcp: trace full payload of all SAN records (req,resp,iels)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:13 +01:00
Steffen Maier beb0b6c9a7 zfcp: trace full payload of all SAN records (req,resp,iels)
commit aceeffbb59bb91404a0bda32a542d7ebf878433a upstream.

This was lost with commit 2c55b750a8
("[SCSI] zfcp: Redesign of the debug tracing for SAN records.")
but is necessary for problem determination, e.g. to see the
currently active zone set during automatic port scan.

For the large GPN_FT response (4 pages), save space by not dumping
any empty residual entries.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 2c55b750a8 ("[SCSI] zfcp: Redesign of the debug tracing for SAN records.")
Reviewed-by: Alexey Ishchuk <aishchuk@linux.vnet.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:13 +01:00
Steffen Maier 569816b4a0 zfcp: fix payload trace length for SAN request&response
commit 94db3725f049ead24c96226df4a4fb375b880a77 upstream.

commit 2c55b750a8
("[SCSI] zfcp: Redesign of the debug tracing for SAN records.")
started to add FC_CT_HDR_LEN which made zfcp dump random data
out of bounds for RSPN GS responses because u.rspn.rsp
is the largest and last field in the union of struct zfcp_fc_req.
Other request/response types only happened to stay within bounds
due to the padding of the union or
due to the trace capping of u.gspn.rsp to ZFCP_DBF_SAN_MAX_PAYLOAD.

Timestamp      : ...
Area           : SAN
Subarea        : 00
Level          : 1
Exception      : -
CPU id         : ..
Caller         : ...
Record id      : 2
Tag            : fsscth2
Request id     : 0x...
Destination ID : 0x00fffffc
Payload short  : 01000000 fc020000 80020000 00000000
                 xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx <===
                 00000000 00000000 00000000 00000000
Payload length : 32                                  <===

struct zfcp_fc_req {
    [0] struct zfcp_fsf_ct_els ct_els;
   [56] struct scatterlist sg_req;
   [96] struct scatterlist sg_rsp;
        union {
            struct {req; rsp;} adisc;    SIZE: 28+28=   56
            struct {req; rsp;} gid_pn;   SIZE: 24+20=   44
            struct {rspsg; req;} gpn_ft; SIZE: 40*4+20=180
            struct {req; rsp;} gspn;     SIZE: 20+273= 293
            struct {req; rsp;} rspn;     SIZE: 277+16= 293
  [136] } u;
}
SIZE: 432

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 2c55b750a8 ("[SCSI] zfcp: Redesign of the debug tracing for SAN records.")
Reviewed-by: Alexey Ishchuk <aishchuk@linux.vnet.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:13 +01:00
Steffen Maier 46737af60b zfcp: fix D_ID field with actual value on tracing SAN responses
commit 771bf03537ddfa4a4dde62ef9dfbc82e4f77ab20 upstream.

With commit 2c55b750a8
("[SCSI] zfcp: Redesign of the debug tracing for SAN records.")
we lost the N_Port-ID where an ELS response comes from.
With commit 7c7dc19681
("[SCSI] zfcp: Simplify handling of ct and els requests")
we lost the N_Port-ID where a CT response comes from.
It's especially useful if the request SAN trace record
with D_ID was already lost due to trace buffer wrap.

GS uses an open WKA port handle and ELS just a D_ID, and
only for ELS we could get D_ID from QTCB bottom via zfcp_fsf_req.
To cover both cases, add a new field to zfcp_fsf_ct_els
and fill it in on request to use in SAN response trace.
Strictly speaking the D_ID on SAN response is the FC frame's S_ID.
We don't need a field for the other end which is always us.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 2c55b750a8 ("[SCSI] zfcp: Redesign of the debug tracing for SAN records.")
Fixes: 7c7dc19681 ("[SCSI] zfcp: Simplify handling of ct and els requests")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:13 +01:00
Steffen Maier 8467dd468c zfcp: restore tracing of handle for port and LUN with HBA records
commit 7c964ffe586bc0c3d9febe9bf97a2e4b2866e5b7 upstream.

This information was lost with
commit a54ca0f62f
("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
but is required to debug e.g. invalid handle situations.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: a54ca0f62f ("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:12 +01:00
Steffen Maier 6916909571 zfcp: trace on request for open and close of WKA port
commit d27a7cb91960cf1fdd11b10071e601828cbf4b1f upstream.

Since commit a54ca0f62f
("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
HBA records no longer contain WWPN, D_ID, or LUN
to reduce duplicate information which is already in REC records.
In contrast to "regular" target ports, we don't use recovery to open
WKA ports such as directory/nameserver, so we don't get REC records.
Therefore, introduce pseudo REC running records without any
actual recovery action but including D_ID of WKA port on open/close.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: a54ca0f62f ("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:12 +01:00
Steffen Maier 053077252d zfcp: restore: Dont use 0 to indicate invalid LUN in rec trace
commit 0102a30a6ff60f4bb4c07358ca3b1f92254a6c25 upstream.

bring back
commit d21e9daa63
("[SCSI] zfcp: Dont use 0 to indicate invalid LUN in rec trace")
which was lost with
commit ae0904f60f
("[SCSI] zfcp: Redesign of the debug tracing for recovery actions.")

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: ae0904f60f ("[SCSI] zfcp: Redesign of the debug tracing for recovery actions.")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:12 +01:00
Steffen Maier 909987d41f zfcp: retain trace level for SCSI and HBA FSF response records
commit 35f040df97fa0e94c7851c054ec71533c88b4b81 upstream.

While retaining the actual filtering according to trace level,
the following commits started to write such filtered records
with a hardcoded record level of 1 instead of the actual record level:
commit 250a1352b9
("[SCSI] zfcp: Redesign of the debug tracing for SCSI records.")
commit a54ca0f62f
("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")

Now we can distinguish written records again for offline level filtering.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 250a1352b9 ("[SCSI] zfcp: Redesign of the debug tracing for SCSI records.")
Fixes: a54ca0f62f ("[SCSI] zfcp: Redesign of the debug tracing for HBA records.")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:12 +01:00
Steffen Maier efaebcb4ac zfcp: close window with unblocked rport during rport gone
commit 4eeaa4f3f1d6c47b69f70e222297a4df4743363e upstream.

On a successful end of reopen port forced,
zfcp_erp_strategy_followup_success() re-uses the port erp_action
and the subsequent zfcp_erp_action_cleanup() now
sees ZFCP_ERP_SUCCEEDED with
erp_action->action==ZFCP_ERP_ACTION_REOPEN_PORT
instead of ZFCP_ERP_ACTION_REOPEN_PORT_FORCED
but must not perform zfcp_scsi_schedule_rport_register().

We can detect this because the fresh port reopen erp_action
is in its very first step ZFCP_ERP_STEP_UNINITIALIZED.

Otherwise this opens a time window with unblocked rport
(until the followup port reopen recovery would block it again).
If a scsi_cmnd timeout occurs during this time window
fc_timed_out() cannot work as desired and such command
would indeed time out and trigger scsi_eh. This prevents
a clean and timely path failover.
This should not happen if the path issue can be recovered
on FC transport layer such as path issues involving RSCNs.

Also, unnecessary and repeated DID_IMM_RETRY for pending and
undesired new requests occur because internally zfcp still
has its zfcp_port blocked.

As follow-on errors with scsi_eh, it can cause,
in the worst case, permanently lost paths due to one of:
sd <scsidev>: [<scsidisk>] Medium access timeout failure. Offlining disk!
sd <scsidev>: Device offlined - not ready after error recovery

For fix validation and to aid future debugging with other recoveries
we now also trace (un)blocking of rports.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 5767620c38 ("[SCSI] zfcp: Do not unblock rport from REOPEN_PORT_FORCED")
Fixes: a2fa0aede0 ("[SCSI] zfcp: Block FC transport rports early on errors")
Fixes: 5f852be9e1 ("[SCSI] zfcp: Fix deadlock between zfcp ERP and SCSI")
Fixes: 338151e066 ("[SCSI] zfcp: make use of fc_remote_port_delete when target port is unavailable")
Fixes: 3859f6a248 ("[PATCH] zfcp: add rports to enable scsi_add_device to work again")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:12 +01:00
Steffen Maier 5f62704e88 zfcp: fix ELS/GS request&response length for hardware data router
commit 70369f8e15b220f50a16348c79a61d3f7054813c upstream.

In the hardware data router case, introduced with kernel 3.2
commit 86a9668a8d ("[SCSI] zfcp: support for hardware data router")
the ELS/GS request&response length needs to be initialized
as in the chained SBAL case.

Otherwise, the FCP channel rejects ELS requests with
FSF_REQUEST_SIZE_TOO_LARGE.

Such ELS requests can be issued by user space through BSG / HBA API,
or zfcp itself uses ADISC ELS for remote port link test on RSCN.
The latter can cause a short path outage due to
unnecessary remote target port recovery because the always
failing ADISC cannot detect extremely short path interruptions
beyond the local FCP channel.

Below example is decoded with zfcpdbf from s390-tools:

Timestamp      : ...
Area           : SAN
Subarea        : 00
Level          : 1
Exception      : -
CPU id         : ..
Caller         : zfcp_dbf_san_req+0408
Record id      : 1
Tag            : fssels1
Request id     : 0x<reqid>
Destination ID : 0x00<target d_id>
Payload info   : 52000000 00000000 <our wwpn       >           [ADISC]
                 <our wwnn       > 00<s_id> 00000000
                 00000000 00000000 00000000 00000000

Timestamp      : ...
Area           : HBA
Subarea        : 00
Level          : 1
Exception      : -
CPU id         : ..
Caller         : zfcp_dbf_hba_fsf_res+0740
Record id      : 1
Tag            : fs_ferr
Request id     : 0x<reqid>
Request status : 0x00000010
FSF cmnd       : 0x0000000b               [FSF_QTCB_SEND_ELS]
FSF sequence no: 0x...
FSF issued     : ...
FSF stat       : 0x00000061		  [FSF_REQUEST_SIZE_TOO_LARGE]
FSF stat qual  : 00000000 00000000 00000000 00000000
Prot stat      : 0x00000100
Prot stat qual : 00000000 00000000 00000000 00000000

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 86a9668a8d ("[SCSI] zfcp: support for hardware data router")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:11 +01:00
Steffen Maier 6d35bb9a9f zfcp: fix fc_host port_type with NPIV
commit bd77befa5bcff8c51613de271913639edf85fbc2 upstream.

For an NPIV-enabled FCP device, zfcp can erroneously show
"NPort (fabric via point-to-point)" instead of "NPIV VPORT"
for the port_type sysfs attribute of the corresponding
fc_host.
s390-tools that can be affected are dbginfo.sh and ziomon.

zfcp_fsf_exchange_config_evaluate() ignores
fsf_qtcb_bottom_config.connection_features indicating NPIV
and only sets fc_host_port_type to FC_PORTTYPE_NPORT if
fsf_qtcb_bottom_config.fc_topology is FSF_TOPO_FABRIC.

Only the independent zfcp_fsf_exchange_port_evaluate()
evaluates connection_features to overwrite fc_host_port_type
to FC_PORTTYPE_NPIV in case of NPIV.
Code was introduced with upstream kernel 2.6.30
commit 0282985da5
("[SCSI] zfcp: Report fc_host_port_type as NPIV").

This works during FCP device recovery (such as set online)
because it performs FSF_QTCB_EXCHANGE_CONFIG_DATA followed by
FSF_QTCB_EXCHANGE_PORT_DATA in sequence.

However, the zfcp-specific scsi host sysfs attributes
"requests", "megabytes", or "seconds_active" trigger only
zfcp_fsf_exchange_config_evaluate() resetting fc_host
port_type to FC_PORTTYPE_NPORT despite NPIV.

The zfcp-specific scsi host sysfs attribute "utilization"
triggers only zfcp_fsf_exchange_port_evaluate() correcting
the fc_host port_type again in case of NPIV.

Evaluate fsf_qtcb_bottom_config.connection_features
in zfcp_fsf_exchange_config_evaluate() where it belongs to.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Fixes: 0282985da5 ("[SCSI] zfcp: Report fc_host_port_type as NPIV")
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:33:11 +01:00
Stefan Haberland 2fe6f38f91 s390/dasd: fix hanging device after clear subchannel
commit 9ba333dc55cbb9523553df973adb3024d223e905 upstream.

When a device is in a status where CIO has killed all I/O by itself the
interrupt for a clear request may not contain an irb to determine the
clear function. Instead it contains an error pointer -EIO.
This was ignored by the DASD int_handler leading to a hanging device
waiting for a clear interrupt.

Handle -EIO error pointer correctly for requests that are clear pending and
treat the clear as successful.

Signed-off-by: Stefan Haberland <sth@linux.vnet.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-02-06 23:32:57 +01:00
Ursula Braun 80e90a3123 qeth: delete napi struct when removing a qeth device
commit 7831b4ff0d926e0deeaabef9db8800ed069a2757 upstream.

A qeth_card contains a napi_struct linked to the net_device during
device probing. This struct must be deleted when removing the qeth
device, otherwise Panic on oops can occur when qeth devices are
repeatedly removed and added.

Fixes: a1c3ed4c9c ("qeth: NAPI support for l2 and l3 discipline")
Cc: stable@vger.kernel.org # v2.6.37+
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Tested-by: Alexander Klein <ALKL@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2016-08-27 11:40:32 +02:00
Stefan Haberland 509a4bccfe s390/dasd: fix refcount for PAV reassignment
commit 9d862ababb609439c5d6987f6d3ddd09e703aa0b upstream.

Add refcount to the DASD device when a summary unit check worker is
scheduled. This prevents that the device is set offline with worker
in place.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-03 15:06:23 -08:00
Stefan Haberland 9155d3f258 s390/dasd: prevent incorrect length error under z/VM after PAV changes
commit 020bf042e5b397479c1174081b935d0ff15d1a64 upstream.

The channel checks the specified length and the provided amount of
data for CCWs and provides an incorrect length error if the size does
not match. Under z/VM with simulation activated the length may get
changed. Having the suppress length indication bit set is stated as
good CCW coding practice and avoids errors under z/VM.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-03 15:06:22 -08:00
Mike Snitzer 30046ef03c UPSTREAM: block: disable entropy contributions for nonrot devices
(cherry picked from commit b277da0a8a594308e17881f4926879bd5fca2a2d)

Clear QUEUE_FLAG_ADD_RANDOM in all block drivers that set
QUEUE_FLAG_NONROT.

Historically, all block devices have automatically made entropy
contributions.  But as previously stated in commit e2e1a148 ("block: add
sysfs knob for turning off disk entropy contributions"):
    - On SSD disks, the completion times aren't as random as they
      are for rotational drives. So it's questionable whether they
      should contribute to the random pool in the first place.
    - Calling add_disk_randomness() has a lot of overhead.

There are more reliable sources for randomness than non-rotational block
devices.  From a security perspective it is better to err on the side of
caution than to allow entropy contributions from unreliable "random"
sources.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-02-10 01:37:31 +00:00
Kees Cook e635e0d5b0 crypto: prefix module autoloading with "crypto-"
commit 5d26a105b5a73e5635eae0629b42fa0a90e07b7b upstream.

This prefixes all crypto module loading with "crypto-" so we never run
the risk of exposing module auto-loading to userspace via a crypto API,
as demonstrated by Mathias Krause:

https://lkml.org/lkml/2013/3/4/70

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-29 17:40:57 -08:00
Martin Schwidefsky 10baac9160 s390/3215: fix tty output containing tabs
commit e512d56c799517f33b301d81e9a5e0ebf30c2d1e upstream.

git commit 37f81fa1f6
"n_tty: do O_ONLCR translation as a single write"
surfaced a bug in the 3215 device driver. In combination this
broke tab expansion for tty ouput.

The cause is an asymmetry in the behaviour of tty3215_ops->write
vs tty3215_ops->put_char. The put_char function scans for '\t'
but the write function does not.

As the driver has logic for the '\t' expansion remove XTABS
from c_oflag of the initial termios as well.

Reported-by: Stephen Powell <zlinuxman@wowway.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-27 07:52:33 -08:00
Martin Schwidefsky 214a899e44 s390/3215: fix hanging console issue
commit 26d766c60f4ea08cd14f0f3435a6db3d6cc2ae96 upstream.

The ccw_device_start in raw3215_start_io can fail. raw3215_try_io
does not check if the request could be started and removes any
pending timer. This can leave the system in a hanging state.
Check for pending request after raw3215_start_io and start a
timer if necessary.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-27 07:52:33 -08:00
Sebastian Ott 506841af86 s390/chsc: fix SEI usage on old FW levels
commit 06cd7a874ec6e09d151aeb1fa8600e14f1ff89f6 upstream.

Using a notification type mask for the store event information chsc
is unsupported on some firmware levels. Retry SEI with that mask set
to zero (which is the old way of requesting only channel subsystem
related events).

Reported-and-tested-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-13 13:59:42 +02:00
Sebastian Ott 6a52b43b32 s390/cio: fix driver callback initialization for ccw consoles
commit 2253e8d79237c69086ded391e6767afe16972527 upstream.

ccw consoles are in use before they can be properly registered with
the driver core. For devices which are in use by a device driver we
rely on the ccw_device's pointer to the driver callbacks to be valid.
For ccw consoles this pointer is NULL until they are registered later
during boot and we dereferenced this pointer. This worked by
chance on 64 bit builds (cdev->drv was NULL but the optional callback
cdev->drv->path_event was also NULL by coincidence) and was unnoticed
until we received reports about boot failures on 31 bit systems.
Fix it by initializing the driver pointer for ccw consoles.

Reported-by: Mike Frysinger <vapier@gentoo.org>
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-06 07:55:27 -07:00
Heiko Carstens ed93fb01a3 s390/dasd: hold request queue sysfs lock when calling elevator_init()
commit ef0899410ff630b2e75306da49996dbbfa318165 upstream.

"elevator: Fix a race in elevator switching and md device initialization"
changed the semantics of elevator_init() in a way that now enforces to hold
the corresponding request queue's sysfs_lock when calling elevator_init()
to fix a race.
The patch did not convert the s390 dasd device driver which is the only
device driver which also calls elevator_init(). So add the missing locking.

Cc: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: Christian Borntraeger <christian@borntraeger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-03-23 21:38:20 -07:00
Martin Schwidefsky 2202b3646c s390/3270: fix allocation of tty3270_screen structure
commit 36d9f4d3b68c7035ead3850dc85f310a579ed0eb upstream.

The tty3270_alloc_screen function is called from tty3270_install with
swapped arguments, the number of columns instead of rows and vice versa.
The number of rows is typically smaller than the number of columns which
makes the screen array too big but the individual cell arrays for the
lines too small. Creating lines longer than the number of rows will
clobber the memory after the end of the cell array.
The fix is simple, call tty3270_alloc_screen with the correct argument
order.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-09 12:24:24 -08:00
Ursula Braun 9dc2f26742 qeth: avoid buffer overflow in snmp ioctl
commit 6fb392b1a63ae36c31f62bc3fc8630b49d602b62 upstream.

Check user-defined length in snmp ioctl request and allow request
only if it fits into a qeth command buffer.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Reviewed-by: Heiko Carstens <heicars2@linux.vnet.ibm.com>
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-04 10:56:37 -08:00
Martin Peschke e1a289ee67 SCSI: zfcp: fix schedule-inside-lock in scsi_device list loops
commit 924dd584b198a58aa7cb3efefd8a03326550ce8f upstream.

BUG: sleeping function called from invalid context at kernel/workqueue.c:2752
in_atomic(): 1, irqs_disabled(): 1, pid: 360, name: zfcperp0.0.1700
CPU: 1 Not tainted 3.9.3+ #69
Process zfcperp0.0.1700 (pid: 360, task: 0000000075b7e080, ksp: 000000007476bc30)
<snip>
Call Trace:
([<00000000001165de>] show_trace+0x106/0x154)
 [<00000000001166a0>] show_stack+0x74/0xf4
 [<00000000006ff646>] dump_stack+0xc6/0xd4
 [<000000000017f3a0>] __might_sleep+0x128/0x148
 [<000000000015ece8>] flush_work+0x54/0x1f8
 [<00000000001630de>] __cancel_work_timer+0xc6/0x128
 [<00000000005067ac>] scsi_device_dev_release_usercontext+0x164/0x23c
 [<0000000000161816>] execute_in_process_context+0x96/0xa8
 [<00000000004d33d8>] device_release+0x60/0xc0
 [<000000000048af48>] kobject_release+0xa8/0x1c4
 [<00000000004f4bf2>] __scsi_iterate_devices+0xfa/0x130
 [<000003ff801b307a>] zfcp_erp_strategy+0x4da/0x1014 [zfcp]
 [<000003ff801b3caa>] zfcp_erp_thread+0xf6/0x2b0 [zfcp]
 [<000000000016b75a>] kthread+0xf2/0xfc
 [<000000000070c9de>] kernel_thread_starter+0x6/0xc
 [<000000000070c9d8>] kernel_thread_starter+0x0/0xc

Apparently, the ref_count for some scsi_device drops down to zero,
triggering device removal through execute_in_process_context(), while
the lldd error recovery thread iterates through a scsi device list.
Unfortunately, execute_in_process_context() decides to immediately
execute that device removal function, instead of scheduling asynchronous
execution, since it detects process context and thinks it is safe to do
so. But almost all calls to shost_for_each_device() in our lldd are
inside spin_lock_irq, even in thread context. Obviously, schedule()
inside spin_lock_irq sections is a bad idea.

Change the lldd to use the proper iterator function,
__shost_for_each_device(), in combination with required locking.

Occurences that need to be changed include all calls in zfcp_erp.c,
since those might be executed in zfcp error recovery thread context
with a lock held.

Other occurences of shost_for_each_device() in zfcp_fsf.c do not
need to be changed (no process context, no surrounding locking).

The problem was introduced in Linux 2.6.37 by commit
b62a8d9b45
"[SCSI] zfcp: Use SCSI device data zfcp_scsi_dev instead of zfcp_unit".

Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-29 09:47:39 -07:00
Martin Peschke bda5d1efa0 SCSI: zfcp: fix lock imbalance by reworking request queue locking
commit d79ff142624e1be080ad8d09101f7004d79c36e1 upstream.

This patch adds wait_event_interruptible_lock_irq_timeout(), which is a
straight-forward descendant of wait_event_interruptible_timeout() and
wait_event_interruptible_lock_irq().

The zfcp driver used to call wait_event_interruptible_timeout()
in combination with some intricate and error-prone locking. Using
wait_event_interruptible_lock_irq_timeout() as a replacement
nicely cleans up that locking.

This rework removes a situation that resulted in a locking imbalance
in zfcp_qdio_sbal_get():

BUG: workqueue leaked lock or atomic: events/1/0xffffff00/10
    last function: zfcp_fc_wka_port_offline+0x0/0xa0 [zfcp]

It was introduced by commit c2af7545aa
"[SCSI] zfcp: Do not wait for SBALs on stopped queue", which had a new
code path related to ZFCP_STATUS_ADAPTER_QDIOUP that took an early exit
without a required lock being held. The problem occured when a
special, non-SCSI I/O request was being submitted in process context,
when the adapter's queues had been torn down. In this case the bug
surfaced when the Fibre Channel port connection for a well-known address
was closed during a concurrent adapter shut-down procedure, which is a
rare constellation.

This patch also fixes these warnings from the sparse tool (make C=1):

drivers/s390/scsi/zfcp_qdio.c:224:12: warning: context imbalance in
 'zfcp_qdio_sbal_check' - wrong count at exit
drivers/s390/scsi/zfcp_qdio.c:244:5: warning: context imbalance in
 'zfcp_qdio_sbal_get' - unexpected unlock

Last but not least, we get rid of that crappy lock-unlock-lock
sequence at the beginning of the critical section.

It is okay to call zfcp_erp_adapter_reopen() with req_q_lock held.

Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-29 09:47:39 -07:00
Steffen Maier 8f425c63ec SCSI: zfcp: status read buffers on first adapter open with link down
commit 9edf7d75ee5f21663a0183d21f702682d0ef132f upstream.

Commit 64deb6efdc
"[SCSI] zfcp: Use status_read_buf_num provided by FCP channel"
started using a value returned by the channel but only evaluated the value
if the fabric link is up.
Commit 8d88cf3f3b
"[SCSI] zfcp: Update status read mempool"
introduced mempool resizings based on the above value.
On setting an FCP device online for the very first time since boot, a new
zeroed adapter object is allocated. If the link is down, the number of
status read requests remains zero. Since just the config data exchange is
incomplete, we proceed with adapter open recovery. However, we
unconditionally call mempool_resize with adapter->stat_read_buf_num == 0 in
this case.

This causes a kernel message "kernel BUG at mm/mempool.c:131!" in process
"zfcperp<FCP-device-bus-ID>" with last function mempool_resize in Krnl PSW
and zfcp_erp_thread in the Call Trace.

Don't evaluate channel values which are invalid on link down. The number of
status read requests is always valid, evaluated, and set to a positive
minimum greater than zero. The adapter open recovery can proceed and the
channel has status read buffers to inform us on a future link up event.
While we are not aware of any other code path that could result in mempool
resize attempts of size zero, we still also initialize the number of status
read buffers to be posted to a static minimum number on adapter object
allocation.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-25 14:07:30 -07:00
Steffen Maier b22b838699 SCSI: zfcp: block queue limits with data router
commit 5fea4291deacd80188b996d2f555fc6a1940e5d4 upstream.

Commit 86a9668a8d
"[SCSI] zfcp: support for hardware data router"
reduced the initial block queue limits in the scsi_host_template to the
absolute minimum and adjusted them later on. However, the adjustment was
too late for the BSG devices of Scsi_Host and fc_host.

Therefore, ioctl(..., SG_IO, ...) with request or response size > 4kB to a
BSG device of an fc_host or a Scsi_Host fails with EINVAL. As a result,
users of such ioctl such as HBA_SendCTPassThru() in libzfcphbaapi return
with error HBA_STATUS_ERROR.

Initialize the block queue limits in zfcp_scsi_host_template to the
greatest common denominator (GCD).

While we cannot exploit the slightly enlarged maximum request size with
data router, this should be neglectible. Doing so also avoids running into
trouble after live guest relocation (LGR) / migration from a data router
FCP device to an FCP device that does not support data router. In that
case, zfcp would figure out the new limits on adapter recovery, but the
fc_host and Scsi_Host (plus in fact all sdevs) still exist with the old and
now too large queue limits.

It should also OK, not to use half the size as in the DIX case, because
fc_host and Scsi_Host do not transport FCP requests including SCSI commands
using protection data.

Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Reviewed-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-25 14:07:30 -07:00
Daniel Hansel 88bc592804 SCSI: zfcp: fix adapter (re)open recovery while link to SAN is down
commit f76ccaac4f82c463a037aa4a1e4ccb85c7011814 upstream.

FCP device remains in status ERP_FAILED when device is switched online
or adapter recovery is triggered  while link to SAN is down.

When Exchange Configuration Data command returns the FSF status
FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE it aborts the exchange process.
The only retries are done during the common error recovery procedure
(i.e. max. 3 retries with 8sec sleep between) and remains in status
ERP_FAILED with QDIO down.

This commit reverts the commit 0df138476c
(zfcp: Fix adapter activation on link down).
When FSF status FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE is received the
adapter recovery will be finished without any retries. QDIO will be
up now and status changes such as LINK UP will be received now.

Signed-off-by: Daniel Hansel <daniel.hansel@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-25 14:07:30 -07:00
Benjamin Poirier aaf9522d62 netiucv: Hold rtnl between name allocation and device registration.
fixes a race condition between concurrent initializations of netiucv devices
that try to use the same name.

sysfs: cannot create duplicate filename '/devices/iucv/netiucv2'
[...]
Call Trace:
([<00000000002edea4>] sysfs_add_one+0xb0/0xdc)
 [<00000000002eecd4>] create_dir+0x80/0xfc
 [<00000000002eee38>] sysfs_create_dir+0xe8/0x118
 [<00000000003835a8>] kobject_add_internal+0x120/0x2d0
 [<00000000003839d6>] kobject_add+0x62/0x9c
 [<00000000003d9564>] device_add+0xcc/0x510
 [<000003e00212c7b4>] netiucv_register_device+0xc0/0x1ec [netiucv]

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Tested-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-13 17:41:18 -07:00
Stefan Weinhuber 8b811bae69 s390/dasd: fix handling of gone paths
When a path is gone and dasd_generic_path_event is called with a
PE_PATH_GONE event, we must assume that any I/O request on that
subchannel is still running. This is unlike the dasd_generic_notify
handler and the CIO_NO_PATH event, which implies that the subchannel
has been cleared.
If dasd_generic_path_event finds that the path has been the last
usable path, it must not call dasd_generic_last_path_gone (which would
reset the state of running requests), but just set the
DASD_STOPPED_DC_WAIT bit.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-05-31 17:23:49 +02:00
Linus Torvalds c4ad180f0e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 update from Martin Schwidefsky:
 "An additional sysfs attribute for channel paths and a couple of bux
  fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pgtable: fix ipte notify bit
  s390/xpram: mark xpram as non-rotational
  s390/smp: fix cpu re-scan vs. cpu state
  s390/cio: add channel ID sysfs attribute
  s390/ftrace: fix mcount adjustment
  s390: fix gmap_ipte_notifier vs. software dirty pages
  s390: disable pfmf for clear page instruction
  s390/disassembler: prevent endless loop in print_fn_code()
  s390: remove non existent reference to GENERIC_KERNEL_THREAD
2013-05-21 09:36:46 -07:00
Christian Borntraeger 00e5d35c0f s390/xpram: mark xpram as non-rotational
xpram is a memory technology. Lets mark that as non-rotational.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-05-17 11:47:04 +02:00