/proc/stats shows invalid gtime when the thread is running in guest.
When vtime accounting is not enabled, we cannot get a valid delta.
The delta is calculated with now - tsk->vtime_snap, but tsk->vtime_snap
is only updated when vtime accounting is runtime enabled.
This patch makes task_gtime() just return gtime without computing the
buggy non-existing tickless delta when vtime accounting is not enabled.
Use context_tracking_is_enabled() to check if vtime is accounting on
some cpu, in which case only we need to check the tickless delta. This
way we fix the gtime value regression on machines not running nohz full.
The kernel config contains CONFIG_VIRT_CPU_ACCOUNTING_GEN=y and
CONFIG_NO_HZ_FULL_ALL=n and boot without nohz_full.
I ran and stop a busy loop in VM and see the gtime in host.
Dump the 43rd field which shows the gtime in every second:
# while :; do awk '{print $3" "$43}' /proc/3955/task/4014/stat; sleep 1; done
S 4348
R 7064566
R 7064766
R 7064967
R 7065168
S 4759
S 4759
During running busy loop, it returns large value.
After applying this patch, we can see right gtime.
# while :; do awk '{print $3" "$43}' /proc/10913/task/10956/stat; sleep 1; done
S 5338
R 5365
R 5465
R 5566
R 5666
S 5726
S 5726
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1447948054-28668-2-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Commit:
e9532e69b8d1 ("sched/cputime: Fix steal time accounting vs. CPU hotplug")
... set rq->prev_* to 0 after a CPU hotplug comes back, in order to
fix the case where (after CPU hotplug) steal time is smaller than
rq->prev_steal_time.
However, this should never happen. Steal time was only smaller because of the
KVM-specific bug fixed by the previous patch. Worse, the previous patch
triggers a bug on CPU hot-unplug/plug operation: because
rq->prev_steal_time is cleared, all of the CPU's past steal time will be
accounted again on hot-plug.
Since the root cause has been fixed, we can just revert commit e9532e69b8d1.
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 'commit e9532e69b8d1 ("sched/cputime: Fix steal time accounting vs. CPU hotplug")'
Link: http://lkml.kernel.org/r/1465813966-3116-3-git-send-email-wanpeng.li@hotmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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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
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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
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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
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Merge 3.10.102 into android-msm-bullhead-3.10-oreo-m5
Changes in 3.10.102: (144 commits)
pipe: Fix buffer offset after partially failed read
x86/iopl/64: Properly context-switch IOPL on Xen PV
ext4: fix NULL pointer dereference in ext4_mark_inode_dirty()
compiler-gcc: integrate the various compiler-gcc[345].h files
x86: LLVMLinux: Fix "incomplete type const struct x86cpu_device_id"
KVM: i8254: change PIT discard tick policy
KVM: fix spin_lock_init order on x86
EDAC, amd64_edac: Shift wrapping issue in f1x_get_norm_dct_addr()
PCI: Disable IO/MEM decoding for devices with non-compliant BARs
linux/const.h: Add _BITUL() and _BITULL()
x86: Rename X86_CR4_RDWRGSFS to X86_CR4_FSGSBASE
x86, processor-flags: Fix the datatypes and add bit number defines
x86/iopl: Fix iopl capability check on Xen PV
sg: fix dxferp in from_to case
aacraid: Fix memory leak in aac_fib_map_free
be2iscsi: set the boot_kset pointer to NULL in case of failure
usb: retry reset if a device times out
USB: cdc-acm: more sanity checking
USB: iowarrior: fix oops with malicious USB descriptors
USB: usb_driver_claim_interface: add sanity checking
USB: mct_u232: add sanity checking in probe
USB: digi_acceleport: do sanity checking for the number of ports
USB: cypress_m8: add endpoint sanity check
USB: serial: cp210x: Adding GE Healthcare Device ID
USB: option: add "D-Link DWM-221 B1" device id
pwc: Add USB id for Philips Spc880nc webcam
Input: powermate - fix oops with malicious USB descriptors
net: irda: Fix use-after-free in irtty_open()
8250: use callbacks to access UART_DLL/UART_DLM
bttv: Width must be a multiple of 16 when capturing planar formats
media: v4l2-compat-ioctl32: fix missing length copy in put_v4l2_buffer32
ALSA: intel8x0: Add clock quirk entry for AD1981B on IBM ThinkPad X41.
jbd2: fix FS corruption possibility in jbd2_journal_destroy() on umount path
bcache: fix cache_set_flush() NULL pointer dereference on OOM
watchdog: rc32434_wdt: fix ioctl error handling
splice: handle zero nr_pages in splice_to_pipe()
xtensa: ISS: don't hang if stdin EOF is reached
xtensa: clear all DBREAKC registers on start
md/raid5: Compare apples to apples (or sectors to sectors)
rapidio/rionet: fix deadlock on SMP
ipr: Fix out-of-bounds null overwrite
ipr: Fix regression when loading firmware
drm/radeon: Don't drop DP 2.7 Ghz link setup on some cards.
tracing: Have preempt(irqs)off trace preempt disabled functions
tracing: Fix crash from reading trace_pipe with sendfile
tracing: Fix trace_printk() to print when not using bprintk()
scripts/coccinelle: modernize &
Input: ims-pcu - sanity check against missing interfaces
Input: ati_remote2 - fix crashes on detecting device with invalid descriptor
ocfs2/dlm: fix race between convert and recovery
ocfs2/dlm: fix BUG in dlm_move_lockres_to_recovery_list
mtd: onenand: fix deadlock in onenand_block_markbad
sched/cputime: Fix steal time accounting vs. CPU hotplug
perf/x86/intel: Fix PEBS data source interpretation on Nehalem/Westmere
hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiated
parisc: Avoid function pointers for kernel exception routines
parisc: Fix kernel crash with reversed copy_from_user()
ALSA: timer: Use mod_timer() for rearming the system timer
net: jme: fix suspend/resume on JMC260
sctp: lack the check for ports in sctp_v6_cmp_addr
ipv6: re-enable fragment header matching in ipv6_find_hdr
cdc_ncm: toggle altsetting to force reset before setup
usbnet: cleanup after bind() in probe()
udp6: fix UDP/IPv6 encap resubmit path
sh_eth: fix NULL pointer dereference in sh_eth_ring_format()
net: Fix use after free in the recvmmsg exit path
farsync: fix off-by-one bug in fst_add_one
ath9k: fix buffer overrun for ar9287
qlge: Fix receive packets drop.
ppp: take reference on channels netns
qmi_wwan: add "D-Link DWM-221 B1" device id
ipv4: l2tp: fix a potential issue in l2tp_ip_recv
ipv6: l2tp: fix a potential issue in l2tp_ip6_recv
ip6_tunnel: set rtnl_link_ops before calling register_netdevice
usb: renesas_usbhs: avoid NULL pointer derefernce in usbhsf_pkt_handler()
usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
ext4: add lockdep annotations for i_data_sem
HID: usbhid: fix inconsistent reset/resume/reset-resume behavior
drm/radeon: hold reference to fences in radeon_sa_bo_new (3.17 and older)
usbvision-video: fix memory leak of alt_max_pkt_size
usbvision: fix leak of usb_dev on failure paths in usbvision_probe()
usbvision: fix crash on detecting device with invalid configuration
usb: xhci: fix wild pointers in xhci_mem_cleanup
usb: hcd: out of bounds access in for_each_companion
crypto: gcm - Fix rfc4543 decryption crash
nl80211: check netlink protocol in socket release notification
Input: gtco - fix crash on detecting device without endpoints
i2c: cpm: Fix build break due to incompatible pointer types
EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback
ASoC: s3c24xx: use const snd_soc_component_driver pointer
efi: Fix out-of-bounds read in variable_matches()
workqueue: fix ghost PENDING flag while doing MQ IO
USB: usbip: fix potential out-of-bounds write
paride: make 'verbose' parameter an 'int' again
fbdev: da8xx-fb: fix videomodes of lcd panels
misc/bmp085: Enable building as a module
rtc: vr41xx: Wire up alarm_irq_enable
drivers/misc/ad525x_dpot: AD5274 fix RDAC read back errors
include/linux/poison.h: fix LIST_POISON{1,2} offset
Drivers: hv: vmbus: prevent cpu offlining on newer hypervisors
perf stat: Document --detailed option
ARM: OMAP3: Add cpuidle parameters table for omap3430
compiler-gcc: disable -ftracer for __noclone functions
ipvs: correct initial offset of Call-ID header search in SIP persistence engine
nbd: ratelimit error msgs after socket close
clk: versatile: sp810: support reentrance
lpfc: fix misleading indentation
ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel
proc: prevent accessing /proc/<PID>/environ until it's ready
batman-adv: Fix broadcast/ogm queue limit on a removed interface
MAINTAINERS: Remove asterisk from EFI directory names
ACPICA: Dispatcher: Update thread ID for recursive method calls
USB: serial: cp210x: add ID for Link ECU
USB: serial: cp210x: add Straizona Focusers device ids
Input: ads7846 - correct the value got from SPI
powerpc: scan_features() updates incorrect bits for REAL_LE
crypto: hash - Fix page length clamping in hash walk
get_rock_ridge_filename(): handle malformed NM entries
Input: max8997-haptic - fix NULL pointer dereference
asmlinkage, pnp: Make variables used from assembler code visible
ARM: OMAP3: Fix booting with thumb2 kernel
decnet: Do not build routes to devices without decnet private data.
route: do not cache fib route info on local routes with oif
packet: fix heap info leak in PACKET_DIAG_MCLIST sock_diag interface
atl2: Disable unimplemented scatter/gather feature
net: fix infoleak in llc
net: fix infoleak in rtnetlink
VSOCK: do not disconnect socket when peer has shutdown SEND only
net: bridge: fix old ioctl unlocked net device walk
net: fix a kernel infoleak in x25 module
fs/cifs: correctly to anonymous authentication via NTLMSSP
ring-buffer: Use long for nr_pages to avoid overflow failures
ring-buffer: Prevent overflow of size in ring_buffer_resize()
mfd: omap-usb-tll: Fix scheduling while atomic BUG
mmc: mmc: Fix partition switch timeout for some eMMCs
mmc: longer timeout for long read time quirk
Bluetooth: vhci: purge unhandled skbs
USB: serial: keyspan: fix use-after-free in probe error path
USB: serial: quatech2: fix use-after-free in probe error path
USB: serial: io_edgeport: fix memory leaks in probe error path
USB: serial: option: add support for Cinterion PH8 and AHxx
tty: vt, return error when con_startup fails
serial: samsung: Reorder the sequence of clock control when call s3c24xx_serial_set_termios()
Linux 3.10.102
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Conflicts:
drivers/media/v4l2-core/v4l2-compat-ioctl32.c
fs/pipe.c
kernel/trace/trace_printk.c
net/core/rtnetlink.c
net/socket.c
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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>
It has been claimed that the PG implementation of 'su' has security
vulnerabilities even when disabled. Unfortunately, the people that
find these vulnerabilities often like to keep them private so they
can profit from exploits while leaving users exposed to malicious
hackers.
In order to reduce the attack surface for vulnerabilites, it is
therefore necessary to make 'su' completely inaccessible when it
is not in use (except by the root and system users).
Change-Id: I79716c72f74d0b7af34ec3a8054896c6559a181d
(cherry picked from commit 853e06c28f8655040d8c00f0ee2f1d72a1d8dc14)
commit fb90a6e93c0684ab2629a42462400603aa829b9c upstream.
sysrq_sched_debug_show() can dump a lot of information. Don't print out
all that if we're just trying to get a list of blocked tasks (SysRq-W).
The information is still accessible with SysRq-T.
Signed-off-by: Rabin Vincent <rabinv@axis.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1459777322-30902-1-git-send-email-rabin.vincent@axis.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Nikolay Borisov <n.borisov.lkml@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Willy Tarreau <w@1wt.eu>
commit e33886b38cc82a9fc3b2d655dfc7f50467594138 upstream.
Add two helpers to make it easier to treat the refcount as boolean.
[js] do not involve WARN_ON_ONCE as it causes build failures
Suggested-by: Jason Baron <jasonbaron0@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
[wt: only backported for use in next fix ;
s/static_key_count(key)/atomic_read(&key->enabled)/]
Signed-off-by: Willy Tarreau <w@1wt.eu>
commit ecf7d01c229d11a44609c0067889372c91fb4f36 upstream.
Oleg noticed that its possible to falsely observe p->on_cpu == 0 such
that we'll prematurely continue with the wakeup and effectively run p on
two CPUs at the same time.
Even though the overlap is very limited; the task is in the middle of
being scheduled out; it could still result in corruption of the
scheduler data structures.
CPU0 CPU1
set_current_state(...)
<preempt_schedule>
context_switch(X, Y)
prepare_lock_switch(Y)
Y->on_cpu = 1;
finish_lock_switch(X)
store_release(X->on_cpu, 0);
try_to_wake_up(X)
LOCK(p->pi_lock);
t = X->on_cpu; // 0
context_switch(Y, X)
prepare_lock_switch(X)
X->on_cpu = 1;
finish_lock_switch(Y)
store_release(Y->on_cpu, 0);
</preempt_schedule>
schedule();
deactivate_task(X);
X->on_rq = 0;
if (X->on_rq) // false
if (t) while (X->on_cpu)
cpu_relax();
context_switch(X, ..)
finish_lock_switch(X)
store_release(X->on_cpu, 0);
Avoid the load of X->on_cpu being hoisted over the X->on_rq load.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
commit 135e8c9250dd5c8c9aae5984fde6f230d0cbfeaf upstream.
The origin of the issue I've seen is related to
a missing memory barrier between check for task->state and
the check for task->on_rq.
The task being woken up is already awake from a schedule()
and is doing the following:
do {
schedule()
set_current_state(TASK_(UN)INTERRUPTIBLE);
} while (!cond);
The waker, actually gets stuck doing the following in
try_to_wake_up():
while (p->on_cpu)
cpu_relax();
Analysis:
The instance I've seen involves the following race:
CPU1 CPU2
while () {
if (cond)
break;
do {
schedule();
set_current_state(TASK_UN..)
} while (!cond);
wakeup_routine()
spin_lock_irqsave(wait_lock)
raw_spin_lock_irqsave(wait_lock) wake_up_process()
} try_to_wake_up()
set_current_state(TASK_RUNNING); ..
list_del(&waiter.list);
CPU2 wakes up CPU1, but before it can get the wait_lock and set
current state to TASK_RUNNING the following occurs:
CPU3
wakeup_routine()
raw_spin_lock_irqsave(wait_lock)
if (!list_empty)
wake_up_process()
try_to_wake_up()
raw_spin_lock_irqsave(p->pi_lock)
..
if (p->on_rq && ttwu_wakeup())
..
while (p->on_cpu)
cpu_relax()
..
CPU3 tries to wake up the task on CPU1 again since it finds
it on the wait_queue, CPU1 is spinning on wait_lock, but immediately
after CPU2, CPU3 got it.
CPU3 checks the state of p on CPU1, it is TASK_UNINTERRUPTIBLE and
the task is spinning on the wait_lock. Interestingly since p->on_rq
is checked under pi_lock, I've noticed that try_to_wake_up() finds
p->on_rq to be 0. This was the most confusing bit of the analysis,
but p->on_rq is changed under runqueue lock, rq_lock, the p->on_rq
check is not reliable without this fix IMHO. The race is visible
(based on the analysis) only when ttwu_queue() does a remote wakeup
via ttwu_queue_remote. In which case the p->on_rq change is not
done uder the pi_lock.
The result is that after a while the entire system locks up on
the raw_spin_irqlock_save(wait_lock) and the holder spins infintely
Reproduction of the issue:
The issue can be reproduced after a long run on my system with 80
threads and having to tweak available memory to very low and running
memory stress-ng mmapfork test. It usually takes a long time to
reproduce. I am trying to work on a test case that can reproduce
the issue faster, but thats work in progress. I am still testing the
changes on my still in a loop and the tests seem OK thus far.
Big thanks to Benjamin and Nick for helping debug this as well.
Ben helped catch the missing barrier, Nick caught every missing
bit in my theory.
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
[ Updated comment to clarify matching barriers. Many
architectures do not have a full barrier in switch_to()
so that cannot be relied upon. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nicholas Piggin <nicholas.piggin@gmail.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/e02cce7b-d9ca-1ad0-7a61-ea97c7582b37@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
If a call to setscheduler tries to assign a task both RT priority
and SCHED_RESET_ON_FORK, the scheduler currently sets the
priority incorrectly, resulting in not only reporting the priority
incorrectly, but also in scheduling the task using the fair scheduler
(because the check for RT sees extra bit for RESET_ON_FORK).
Bug: 27705114
Change-Id: I2eaa137a759cd39e1e98f8d5e1caea046877330d
Replace the single preempt_count() 'function' that's an lvalue with
two proper functions:
preempt_count() - returns the preempt_count value as rvalue
preempt_count_set() - Allows setting the preempt-count value
Also provide preempt_count_ptr() as a convenience wrapper to implement
all modifying operations.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-orxrbycjozopqfhb4dxdkdvb@git.kernel.org
[ Fixed build failure. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Bug: 28705983
(cherry picked from commit 4a2b4b222743bb07fedf985b884550f2ca067ea9)
Change-Id: I1f74e16f9a30d9fdf5f2439d32853568fa68baaa
We're copying the on-stack structure to userspace, but forgot to give
the right number of bytes to copy. This allows the calling process to
obtain up to PAGE_SIZE bytes from the stack (and possibly adjacent
kernel memory).
This fix copies only as much as we actually have on the stack
(attr->size defaults to the size of the struct) and leaves the rest of
the userspace-provided buffer untouched.
Found using kmemcheck + trinity.
Fixes: d50dde5a10f30 ("sched: Add new scheduler syscalls to support an extended scheduling parameters ABI")
Bug: 28731691
Change-Id: Iaf2ecb4d2b0fa9df09539f2fc9ad6fd123d87aa2
Cc: Dario Faggioli <raistlin@linux.it>
Cc: Juri Lelli <juri.lelli@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392585857-10725-1-git-send-email-vegard.nossum@oracle.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
commit e9532e69b8d1d1284e8ecf8d2586de34aec61244 upstream.
On CPU hotplug the steal time accounting can keep a stale rq->prev_steal_time
value over CPU down and up. So after the CPU comes up again the delta
calculation in steal_account_process_tick() wreckages itself due to the
unsigned math:
u64 steal = paravirt_steal_clock(smp_processor_id());
steal -= this_rq()->prev_steal_time;
So if steal is smaller than rq->prev_steal_time we end up with an insane large
value which then gets added to rq->prev_steal_time, resulting in a permanent
wreckage of the accounting. As a consequence the per CPU stats in /proc/stat
become stale.
Nice trick to tell the world how idle the system is (100%) while the CPU is
100% busy running tasks. Though we prefer realistic numbers.
None of the accounting values which use a previous value to account for
fractions is reset at CPU hotplug time. update_rq_clock_task() has a sanity
check for prev_irq_time and prev_steal_time_rq, but that sanity check solely
deals with clock warps and limits the /proc/stat visible wreckage. The
prev_time values are still wrong.
Solution is simple: Reset rq->prev_*_time when the CPU is plugged in again.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: <stable@vger.kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Glauber Costa <glommer@parallels.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: commit 095c0aa83e "sched: adjust scheduler cpu power for stolen time"
Fixes: commit aa48380851 "sched: Remove irq time from available CPU power"
Fixes: commit e6e6685acc "KVM guest: Steal time accounting"
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1603041539490.3686@nanos
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
commit 119d6f6a3be8b424b200dcee56e74484d5445f7e upstream.
Because wakeups can (fundamentally) be late, a task might not be in
the expected state. Therefore testing against a task's state is racy,
and can yield false positives.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: oleg@redhat.com
Fixes: 9067ac85d5 ("wake_up_process() should be never used to wakeup a TASK_STOPPED/TRACED task")
Link: http://lkml.kernel.org/r/1448933660-23082-1-git-send-email-sasha.levin@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The statistics are provided in /proc/<pid>/cpufreq_stats as a read-only
interface. This gives the amount of time spent by a task/process in
each of the frequencies on each of the CPUs. The cat output will have
"<cpu> <frequency> <time>" triplet in each line, which will mean that
a given task spent <time> usertime units of time at <frequency> on
CPU <cpu>. usertime units here is 10mS (similar to other time exported
in /proc). The statistics are available during the lifetime of the
tasks/processes.
Change-Id: I3ebb338c27020aabd6b4e258bd26981c51a57771
Decare war on uninterruptible sleep. Add a tracepoint which
walks the kernel stack and dumps the first non-scheduler function
called before the scheduler is invoked.
Change-Id: I19e965d5206329360a92cbfe2afcc8c30f65c229
Signed-off-by: Riley Andrews <riandrews@google.com>
SCHED_HRTICK seems to improve system responsiveness under load
significantly. Enable it for now while keeping CONFIG_HZ at 100.
Bug: 25745871
Change-Id: Ieb57610a3d513b727debee012301e9523bd4ec3c
Function best_small_task_cpu() has bias on mostly idle CPUs and shallow
cstate CPUs. Thus chance of needing to find the least busy or the least
power cost fallback CPU is quite rare typically. At present, however,
the function finds those two CPUs always unnecessarily for most of time.
Optimize the function by amending it to look for the least busy CPU and
the least power cost fallback CPU only when those are in need. This change
is solely for optimization and doesn't make functional changes.
CRs-fixed: 849655
Change-Id: I5eca11436e85b448142a7a7644f422c71eb25e8e
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Given certain combinations of hotplug and cpusets, it is possible
to have a cpumask with no valid CPUs, including the CPU where the
task is currently running.
Fixes a regression caused by 93e62b823, because we will run the
body of the loop with an invalid CPU index instead of falling
through to return fallback_cpu.
bug 23748688
Change-Id: I621e4f6ab12f9fe932dfd3cd12d705d5617836bc
If doing a synchronous wakeup keep the woken task on the same
core as the waker, ignoring task history (i.e. power) on task placement.
Change-Id: I911702ef2ed9e3705d19591da1f0e33d2198c1df
Inline relatively small and frequently used function scale_load_to_cpu().
CRs-fixed: 849655
Change-Id: Id5f60595c394959d78e6da4cc4c18c338fec285b
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Function best_small_task_cpu() looks for a mostly idle CPU and returns it
as the best CPU for a given small task. At present, however, it cannot
break the CPU search loop when the function found a mostly idle CPU but
continues to iterate CPU search loop because the function needs to find
and return the given task's previous CPU as the best CPU to avoid
unnecessary task migration when the previous CPU is mostly idle.
Optimize the function best_small_task_cpu() to iterate search CPUs
starting from the given task's CPU so it can break the loop as soon as
mostly idle CPU found. This optimization saves few hundreds ns spent by
the function and doesn't make any functional change.
CRs-fixed: 849655
Change-Id: I8c540963487f4102dac4d54e9f98e24a4a92a7b3
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
select_best_cpu() is agnostic of the hardware topology. This means that
certain functions such as task_will_fit() and skip_cpu() are run
unnecessarily for every CPU in a cluster whereas they need to run only
once per cluster. Reduce the execution time of select_best_cpu() by
ensuring these functions run only once per cluster. The frequency domain
mask is used to identify CPUs that fall in the same cluster.
CRs-fixed: 849655
Change-Id: Id24208710a0fc6321e24d9a773f00be9312b75de
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[joonwoop@codeaurora.org: added continue after clearing search_cpus.
fixed indentations with space. fixed skip_cpu() to return true when rq ==
task_rq.]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
select_best_cpu() is a crucial wakeup routine that determines the
time taken by the scheduler to wake up a task. Optimize this routine
to get higher performance. The following changes have been made as
part of the optimization listed in order of how they built on top of
one another:
* Several routines called by select_best_cpu() recalculate task load
and CPU load even though these are already known quantities. For
example mostly_idle_cpu_sync() calculates CPU load; task_will_fit()
calculates task load before spill_threshold_crossed() recalculates
both. Remove these redundant calculations by moving the task load
and CPU load computations to the select_best_cpu() 'for' loop and
passing to any functions that need the information.
* Rewrite best_small_task_cpu() to avoid the existing two pass
approach. The two pass approach was only in place to find the
minimum power cluster for small task placement. This information
can easily be established by looking at runqueue capacities. The
cluster with not the highest capacity constitutes the minimum power
cluster. A special CPU mask is called the mpc_mask required to safeguard
against undue side effects on SMP systems. Also terminate the function
early if the previous CPU is found to be mostly_idle.
* Reorganize code to ensure that no unnecessary computations or
variable assignments are done. For example there is no need to
compute CPU load if that information does not end up getting used
in any iteration of the 'for' loop.
* The tick logic for EA migrations unnecessarily checks for the power
of all CPUs only for skip_cpu() to throw away the result later.
Ensure that for EA we only check CPUs within the same cluster
and avoid running select_best_cpu() whenever possible.
CRs-fixed: 849655
Change-Id: I4e722912fcf3fe4e365a826d4d92a4dd45c05ef3
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[joonwoop@codeaurora.org: fixed cpufreq_notifier_policy() to set mpc_mask.
added a comment about prerequisite of lower_power_cpu_available().
s/struct rq * rq/struct rq *rq/.]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
The irq-aware scheduler is to achieve better performance by avoiding task
placement to the CPUs which have high irq activity. However current
scheduler places tasks to the CPUs which are loaded by irq activity
preferably as opposed to what it is meant to be when the task is non-small.
This is suboptimal for both power and performance.
Fix task placement algorithm to avoid CPUs with significant irq activities.
Change-Id: Ifa5a6ac186241bd58fa614e93e3d873a5f5ad4ca
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
This fixes the undefined references to acct_update_power() when
building for ARCH=um introduced by commit: c0a74c5d
Bug: 21631098
Change-Id: Id8565f02e141395a1ffb269de09a062680552090
Signed-off-by: Naveen Ramaraj <nramaraj@codeaurora.org>
At present, when IRQ handler spans multiple scheduler windows, HMP
scheduler resets the IRQ CPU's prev_runnable_sum with its current max
capacity under the assumption that there is no other possible contribution
to the CPU's prev_runnable_sum. This isn't correct as another CPU can
migrate tasks to the IRQ CPU.
Furthermore such incorrectness can trigger BUG_ON() if the migrated task's
prev_window is larger than migrating CPU's current capacity in following
scenario.
1. ISR on the power efficient CPU has been running for multiple windows.
2. A task which has prev_window higher than IRQ CPU's current capacity
migrated to the IRQ CPU.
3. Servicing IRQ is done and the IRQ CPU resets its prev_runnable_rum =
CPU's current capacity.
4. Before window rollover, the task on the IRQ CPU migrates to other CPU
and fixes up source and destnation CPUs' busy time.
5. BUG_ON(src_rq->prev_runnable_sum < 0) triggers as p->ravg.prev_window
is larger than src_rq->prev_runnable_sum.
Fix such incorrectness by preserving prev_runnable_sum when ISR spans
multiple scheduler windows. There is no need to reset it.
CRs-fixed: 828055
Change-Id: I1f95ece026493e49d3810f9c940ec5f698cc0b81
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
cpu_power has been added to keep track of amount of power each task is
consuming. cpu_power is updated whenever stime and utime are updated for
a task. power is computed by taking into account the frequency at which
the current core was running and the current for cpu actively
running at hat frequency.
Bug: 21498425
Change-Id: Ic535941e7b339aab5cae9081a34049daeb44b248
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
IRQs must be disabled while locking runqueues since an
interrupt may cause a runqueue lock to be acquired.
CRs-fixed: 828598
Change-Id: Id66f2e25ed067fc4af028482db8c3abd3d10c20f
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
The scheduler currently either considers a tasks entire wait time as
task demand or completely ignores wait time based on the tunable
sched_account_wait_time. Both approaches have their limitations,
however. The former artificially boosts tasks demand when it may not
actually be justified. With the latter, the scheduler runs the risk
of never being able to recognize true load (consider two CPU hogs on
a single little CPU). To achieve a compromise between these two
extremes, change the load tracking algorithm to only consider part of
a tasks wait time as its demand. The portion of wait time accounted
as demand is determined by each tasks percent load, i.e. a task that
waits for 10ms and has 60 % task load, only 6 ms of the wait will
contribute to task demand. This approach is more fair as the scheduler
now tries to determine how much of its wait time would a task actually
have been using the CPU if it had been executing. It ensures that tasks
with high demand continue to see most of the benefits of accounting
wait time as busy time, however, lower demand tasks don't experience a
disproportionately high boost to demand triggering unjustified big CPU
usage. Note that this new approach is only applicable to wait time
being considered as task demand and not wait time considered as CPU
busy time.
To achieve the above effect, ensure that anytime a task is waiting, its
runtime in every relevant window segment is appropriately adjusted using
its pct load.
Change-Id: I6a698d6cb1adeca49113c3499029b422daf7871f
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
IRQ load is not taken into account when determining whether a task
should be migrated to a different CPU. A task that runs for a long time
could get stuck on CPU with high IRQ load causing degraded performance.
Add irq load awareness to the tick CPU selection logic.
CRs-fixed: 809119
Change-Id: I7969f7dd947fb5d66fce0bedbc212bfb2d42c8c1
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
When an entire cluster is hotplugged, the scheduler's notion of
max_capacity can get outdated. This introduces the following
inefficiencies in behavior:
* task_will_fit() does not return true on all tasks. Consequently
all big tasks go through fallback CPU selection logic skipping
C-state and power checks in select_best_cpu().
* During boost, migration_needed() return true unnecessarily
causing an avoidable rerun of select_best_cpu().
* An unnecessary kick is sent to all little CPUs when boost is set.
* An opportunity for early bailout from nohz_kick_needed() is lost.
Start handling CPUFREQ_REMOVE_POLICY in the policy notifier callback
which indicates the last CPU in a cluster being hotplugged out. Also
modify update_min_max_capacity() to only iterate through online CPUs
instead of possible CPUs. While we can't guarantee the integrity of
the cpu_online_mask in the notifier callback, the scheduler will fix
up all state soon after any changes to the online mask.
The change does have one side effect; early termination from the
notifier callback when min_max_freq or max_possible_freq remain
unchanged is no longer possible. This is because when the last CPU
in a cluster is hot removed, only max_capacity is updated without
affecting min_max_freq or max_possible_freq. Therefore, when the
first CPU in the same cluster gets hot added at a later point
max_capacity must once again be recomputed despite there being no
change in min_max_freq or max_possible_freq.
Change-Id: I9a1256b5c2cd6fcddd85b069faf5e2ace177e122
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
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Merge commit 'v3.10.67' into LA.BF64.1.2.9
This merge brings us up to date with upstream kernel.org tag v3.10.67.
It also contains changes to allow forbidden warnings introduced in
the commit 'core, nfqueue, openvswitch: Orphan frags in skb_zerocopy
and handle errors'. Once upstream has corrected these warnings, the
changes to scripts/gcc-wrapper.py, in this commit, can be reverted.
* 'v3.10.67' (915 commits):
Linux 3.10.67
md/raid5: fetch_block must fetch all the blocks handle_stripe_dirtying wants.
ext4: fix warning in ext4_da_update_reserve_space()
quota: provide interface for readding allocated space into reserved space
crypto: add missing crypto module aliases
crypto: include crypto- module prefix in template
crypto: prefix module autoloading with "crypto-"
drbd: merge_bvec_fn: properly remap bvm->bi_bdev
Revert "swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single"
ipvs: uninitialized data with IP_VS_IPV6
KEYS: close race between key lookup and freeing
sata_dwc_460ex: fix resource leak on error path
x86/asm/traps: Disable tracing and kprobes in fixup_bad_iret and sync_regs
x86, tls: Interpret an all-zero struct user_desc as "no segment"
x86, tls, ldt: Stop checking lm in LDT_empty
x86/tsc: Change Fast TSC calibration failed from error to info
x86, hyperv: Mark the Hyper-V clocksource as being continuous
clocksource: exynos_mct: Fix bitmask regression for exynos4_mct_write
can: dev: fix crtlmode_supported check
bus: mvebu-mbus: fix support of MBus window 13
ARM: dts: imx25: Fix PWM "per" clocks
time: adjtimex: Validate the ADJ_FREQUENCY values
time: settimeofday: Validate the values of tv from user
dm cache: share cache-metadata object across inactive and active DM tables
ipr: wait for aborted command responses
drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES
scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore
ALSA: usb-audio: Add mic volume fix quirk for Logitech Webcam C210
libata: prevent HSM state change race between ISR and PIO
pinctrl: Fix two deadlocks
gpio: sysfs: fix gpio device-attribute leak
gpio: sysfs: fix gpio-chip device-attribute leak
Linux 3.10.66
s390/3215: fix tty output containing tabs
s390/3215: fix hanging console issue
fsnotify: next_i is freed during fsnotify_unmount_inodes.
netfilter: ipset: small potential read beyond the end of buffer
mmc: sdhci: Fix sleep in atomic after inserting SD card
LOCKD: Fix a race when initialising nlmsvc_timeout
x86, um: actually mark system call tables readonly
um: Skip futex_atomic_cmpxchg_inatomic() test
decompress_bunzip2: off by one in get_next_block()
ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances
ARM: omap5/dra7xx: Fix frequency typos
ARM: clk-imx6q: fix video divider for rev T0 1.0
ARM: imx6q: drop unnecessary semicolon
ARM: dts: imx25: Fix the SPI1 clocks
Input: I8042 - add Acer Aspire 7738 to the nomux list
Input: i8042 - reset keyboard to fix Elantech touchpad detection
can: kvaser_usb: Don't send a RESET_CHIP for non-existing channels
can: kvaser_usb: Reset all URB tx contexts upon channel close
can: kvaser_usb: Don't free packets when tight on URBs
USB: keyspan: fix null-deref at probe
USB: cp210x: add IDs for CEL USB sticks and MeshWorks devices
USB: cp210x: fix ID for production CEL MeshConnect USB Stick
usb: dwc3: gadget: Stop TRB preparation after limit is reached
usb: dwc3: gadget: Fix TRB preparation during SG
OHCI: add a quirk for ULi M5237 blocking on reset
gpiolib: of: Correct error handling in of_get_named_gpiod_flags
NFSv4.1: Fix client id trunking on Linux
ftrace/jprobes/x86: Fix conflict between jprobes and function graph tracing
vfio-pci: Fix the check on pci device type in vfio_pci_probe()
uvcvideo: Fix destruction order in uvc_delete()
smiapp: Take mutex during PLL update in sensor initialisation
af9005: fix kernel panic on init if compiled without IR
smiapp-pll: Correct clock debug prints
video/logo: prevent use of logos after they have been freed
storvsc: ring buffer failures may result in I/O freeze
iscsi-target: Fail connection on short sendmsg writes
hp_accel: Add support for HP ZBook 15
cfg80211: Fix 160 MHz channels with 80+80 and 160 MHz drivers
ARC: [nsimosci] move peripherals to match model to FPGA
drm/i915: Force the CS stall for invalidate flushes
drm/i915: Invalidate media caches on gen7
drm/radeon: properly filter DP1.2 4k modes on non-DP1.2 hw
drm/radeon: check the right ring in radeon_evict_flags()
drm/vmwgfx: Fix fence event code
enic: fix rx skb checksum
alx: fix alx_poll()
tcp: Do not apply TSO segment limit to non-TSO packets
tg3: tg3_disable_ints using uninitialized mailbox value to disable interrupts
netlink: Don't reorder loads/stores before marking mmap netlink frame as available
netlink: Always copy on mmap TX.
Linux 3.10.65
mm: Don't count the stack guard page towards RLIMIT_STACK
mm: propagate error from stack expansion even for guard page
mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed
perf session: Do not fail on processing out of order event
perf: Fix events installation during moving group
perf/x86/intel/uncore: Make sure only uncore events are collected
Btrfs: don't delay inode ref updates during log replay
ARM: mvebu: disable I/O coherency on non-SMP situations on Armada 370/375/38x/XP
scripts/kernel-doc: don't eat struct members with __aligned
nilfs2: fix the nilfs_iget() vs. nilfs_new_inode() races
nfsd4: fix xdr4 inclusion of escaped char
fs: nfsd: Fix signedness bug in compare_blob
serial: samsung: wait for transfer completion before clock disable
writeback: fix a subtle race condition in I_DIRTY clearing
cdc-acm: memory leak in error case
genhd: check for int overflow in disk_expand_part_tbl()
USB: cdc-acm: check for valid interfaces
ALSA: hda - Fix wrong gpio_dir & gpio_mask hint setups for IDT/STAC codecs
ALSA: hda - using uninitialized data
ALSA: usb-audio: extend KEF X300A FU 10 tweak to Arcam rPAC
driver core: Fix unbalanced device reference in drivers_probe
x86, vdso: Use asm volatile in __getcpu
x86_64, vdso: Fix the vdso address randomization algorithm
HID: Add a new id 0x501a for Genius MousePen i608X
HID: add battery quirk for USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO keyboard
HID: roccat: potential out of bounds in pyra_sysfs_write_settings()
HID: i2c-hid: prevent buffer overflow in early IRQ
HID: i2c-hid: fix race condition reading reports
iommu/vt-d: Fix an off-by-one bug in __domain_mapping()
UBI: Fix double free after do_sync_erase()
UBI: Fix invalid vfree()
pstore-ram: Allow optional mapping with pgprot_noncached
pstore-ram: Fix hangs by using write-combine mappings
PCI: Restore detection of read-only BARs
ASoC: dwc: Ensure FIFOs are flushed to prevent channel swap
ASoC: max98090: Fix ill-defined sidetone route
ASoC: sigmadsp: Refuse to load firmware files with a non-supported version
ath5k: fix hardware queue index assignment
swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single
can: peak_usb: fix memset() usage
can: peak_usb: fix cleanup sequence order in case of error during init
ath9k: fix BE/BK queue order
ath9k_hw: fix hardware queue allocation
ocfs2: fix journal commit deadlock
Linux 3.10.64
Btrfs: fix fs corruption on transaction abort if device supports discard
Btrfs: do not move em to modified list when unpinning
eCryptfs: Remove buggy and unnecessary write in file name decode routine
eCryptfs: Force RO mount when encrypted view is enabled
udf: Verify symlink size before loading it
exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting
ncpfs: return proper error from NCP_IOC_SETROOT ioctl
crypto: af_alg - fix backlog handling
userns: Unbreak the unprivileged remount tests
userns: Allow setting gid_maps without privilege when setgroups is disabled
userns: Add a knob to disable setgroups on a per user namespace basis
userns: Rename id_map_mutex to userns_state_mutex
userns: Only allow the creator of the userns unprivileged mappings
userns: Check euid no fsuid when establishing an unprivileged uid mapping
userns: Don't allow unprivileged creation of gid mappings
userns: Don't allow setgroups until a gid mapping has been setablished
userns: Document what the invariant required for safe unprivileged mappings.
groups: Consolidate the setgroups permission checks
umount: Disallow unprivileged mount force
mnt: Update unprivileged remount test
mnt: Implicitly add MNT_NODEV on remount when it was implicitly added by mount
mac80211: free management frame keys when removing station
mac80211: fix multicast LED blinking and counter
KEYS: Fix stale key registration at error path
isofs: Fix unchecked printing of ER records
x86/tls: Don't validate lm in set_thread_area() after all
dm space map metadata: fix sm_bootstrap_get_nr_blocks()
dm bufio: fix memleak when using a dm_buffer's inline bio
nfs41: fix nfs4_proc_layoutget error handling
megaraid_sas: corrected return of wait_event from abort frame path
mmc: block: add newline to sysfs display of force_ro
mfd: tc6393xb: Fail ohci suspend if full state restore is required
md/bitmap: always wait for writes on unplug.
x86, kvm: Clear paravirt_enabled on KVM guests for espfix32's benefit
x86_64, switch_to(): Load TLS descriptors before switching DS and ES
x86/tls: Disallow unusual TLS segments
x86/tls: Validate TLS entries to protect espfix
isofs: Fix infinite looping over CE entries
Linux 3.10.63
ALSA: usb-audio: Don't resubmit pending URBs at MIDI error recovery
powerpc: 32 bit getcpu VDSO function uses 64 bit instructions
ARM: sched_clock: Load cycle count after epoch stabilizes
igb: bring link up when PHY is powered up
ext2: Fix oops in ext2_get_block() called from ext2_quota_write()
nEPT: Nested INVEPT
net: sctp: use MAX_HEADER for headroom reserve in output path
net: mvneta: fix Tx interrupt delay
rtnetlink: release net refcnt on error in do_setlink()
net/mlx4_core: Limit count field to 24 bits in qp_alloc_res
tg3: fix ring init when there are more TX than RX channels
ipv6: gre: fix wrong skb->protocol in WCCP
sata_fsl: fix error handling of irq_of_parse_and_map
ahci: disable MSI on SAMSUNG 0xa800 SSD
AHCI: Add DeviceIDs for Sunrise Point-LP SATA controller
media: smiapp: Only some selection targets are settable
drm/i915: Unlock panel even when LVDS is disabled
drm/radeon: kernel panic in drm_calc_vbltimestamp_from_scanoutpos with 3.18.0-rc6
i2c: davinci: generate STP always when NACK is received
i2c: omap: fix i207 errata handling
i2c: omap: fix NACK and Arbitration Lost irq handling
xen-netfront: Remove BUGs on paged skb data which crosses a page boundary
mm: fix swapoff hang after page migration and fork
mm: frontswap: invalidate expired data on a dup-store failure
Linux 3.10.62
nfsd: Fix ACL null pointer deref
powerpc/powernv: Honor the generic "no_64bit_msi" flag
bnx2fc: do not add shared skbs to the fcoe_rx_list
nfsd4: fix leak of inode reference on delegation failure
nfsd: Fix slot wake up race in the nfsv4.1 callback code
rt2x00: do not align payload on modern H/W
can: dev: avoid calling kfree_skb() from interrupt context
spi: dw: Fix dynamic speed change.
iser-target: Handle DEVICE_REMOVAL event on network portal listener correctly
target: Don't call TFO->write_pending if data_length == 0
srp-target: Retry when QP creation fails with ENOMEM
Input: xpad - use proper endpoint type
ARM: 8222/1: mvebu: enable strex backoff delay
ARM: 8216/1: xscale: correct auxiliary register in suspend/resume
ALSA: usb-audio: Add ctrl message delay quirk for Marantz/Denon devices
can: esd_usb2: fix memory leak on disconnect
USB: xhci: don't start a halted endpoint before its new dequeue is set
usb-quirks: Add reset-resume quirk for MS Wireless Laser Mouse 6000
usb: serial: ftdi_sio: add PIDs for Matrix Orbital products
USB: serial: cp210x: add IDs for CEL MeshConnect USB Stick
USB: keyspan: fix tty line-status reporting
USB: keyspan: fix overrun-error reporting
USB: ssu100: fix overrun-error reporting
iio: Fix IIO_EVENT_CODE_EXTRACT_DIR bit mask
powerpc/pseries: Fix endiannes issue in RTAS call from xmon
powerpc/pseries: Honor the generic "no_64bit_msi" flag
of/base: Fix PowerPC address parsing hack
ASoC: wm_adsp: Avoid attempt to free buffers that might still be in use
ASoC: sgtl5000: Fix SMALL_POP bit definition
PCI/MSI: Add device flag indicating that 64-bit MSIs don't work
ipx: fix locking regression in ipx_sendmsg and ipx_recvmsg
pptp: fix stack info leak in pptp_getname()
qmi_wwan: Add support for HP lt4112 LTE/HSPA+ Gobi 4G Modem
ieee802154: fix error handling in ieee802154fake_probe()
ipv4: Fix incorrect error code when adding an unreachable route
inetdevice: fixed signed integer overflow
sparc64: Fix constraints on swab helpers.
uprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME
x86, mm: Set NX across entire PMD at boot
x86: Require exact match for 'noxsave' command line option
x86_64, traps: Rework bad_iret
x86_64, traps: Stop using IST for #SS
x86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C
MIPS: Loongson: Make platform serial setup always built-in.
MIPS: oprofile: Fix backtrace on 64-bit kernel
Linux 3.10.61
mm: memcg: handle non-error OOM situations more gracefully
mm: memcg: do not trap chargers with full callstack on OOM
mm: memcg: rework and document OOM waiting and wakeup
mm: memcg: enable memcg OOM killer only for user faults
x86: finish user fault error path with fatal signal
arch: mm: pass userspace fault flag to generic fault handler
arch: mm: do not invoke OOM killer on kernel fault OOM
arch: mm: remove obsolete init OOM protection
mm: invoke oom-killer from remaining unconverted page fault handlers
net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks
net: sctp: fix panic on duplicate ASCONF chunks
net: sctp: fix remote memory pressure from excessive queueing
KVM: x86: Don't report guest userspace emulation error to userspace
SCSI: hpsa: fix a race in cmd_free/scsi_done
net/mlx4_en: Fix BlueFlame race
ARM: Correct BUG() assembly to ensure it is endian-agnostic
perf/x86/intel: Use proper dTLB-load-misses event on IvyBridge
mei: bus: fix possible boundaries violation
perf: Handle compat ioctl
MIPS: Fix forgotten preempt_enable() when CPU has inclusive pcaches
dell-wmi: Fix access out of memory
ARM: probes: fix instruction fetch order with <asm/opcodes.h>
br: fix use of ->rx_handler_data in code executed on non-rx_handler path
netfilter: nf_nat: fix oops on netns removal
netfilter: xt_bpf: add mising opaque struct sk_filter definition
netfilter: nf_log: release skbuff on nlmsg put failure
netfilter: nfnetlink_log: fix maximum packet length logged to userspace
netfilter: nf_log: account for size of NLMSG_DONE attribute
ipc: always handle a new value of auto_msgmni
clocksource: Remove "weak" from clocksource_default_clock() declaration
kgdb: Remove "weak" from kgdb_arch_pc() declaration
media: ttusb-dec: buffer overflow in ioctl
NFSv4: Fix races between nfs_remove_bad_delegation() and delegation return
nfs: Fix use of uninitialized variable in nfs_getattr()
NFS: Don't try to reclaim delegation open state if recovery failed
NFSv4: Ensure that we remove NFSv4.0 delegations when state has expired
Input: alps - allow up to 2 invalid packets without resetting device
Input: alps - ignore potential bare packets when device is out of sync
dm raid: ensure superblock's size matches device's logical block size
dm btree: fix a recursion depth bug in btree walking code
block: Fix computation of merged request priority
parisc: Use compat layer for msgctl, shmat, shmctl and semtimedop syscalls
scsi: only re-lock door after EH on devices that were reset
nfs: fix pnfs direct write memory leak
firewire: cdev: prevent kernel stack leaking into ioctl arguments
arm64: __clear_user: handle exceptions on strb
ARM: 8198/1: make kuser helpers depend on MMU
drm/radeon: add missing crtc unlock when setting up the MC
mac80211: fix use-after-free in defragmentation
macvtap: Fix csum_start when VLAN tags are present
iwlwifi: configure the LTR
libceph: do not crash on large auth tickets
xtensa: re-wire umount syscall to sys_oldumount
ALSA: usb-audio: Fix memory leak in FTU quirk
ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on macbooks
ahci: Add Device IDs for Intel Sunrise Point PCH
audit: keep inode pinned
x86, x32, audit: Fix x32's AUDIT_ARCH wrt audit
sparc32: Implement xchg and atomic_xchg using ATOMIC_HASH locks
sparc64: Do irq_{enter,exit}() around generic_smp_call_function*().
sparc64: Fix crashes in schizo_pcierr_intr_other().
sunvdc: don't call VD_OP_GET_VTOC
vio: fix reuse of vio_dring slot
sunvdc: limit each sg segment to a page
sunvdc: compute vdisk geometry from capacity
sunvdc: add cdrom and v1.1 protocol support
net: sctp: fix memory leak in auth key management
net: sctp: fix NULL pointer dereference in af->from_addr_param on malformed packet
gre6: Move the setting of dev->iflink into the ndo_init functions.
ip6_tunnel: Use ip6_tnl_dev_init as the ndo_init function.
Linux 3.10.60
libceph: ceph-msgr workqueue needs a resque worker
Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup
of: Fix overflow bug in string property parsing functions
sysfs: driver core: Fix glue dir race condition by gdp_mutex
i2c: at91: don't account as iowait
acer-wmi: Add acpi_backlight=video quirk for the Acer KAV80
rbd: Fix error recovery in rbd_obj_read_sync()
drm/radeon: remove invalid pci id
usb: gadget: udc: core: fix kernel oops with soft-connect
usb: gadget: function: acm: make f_acm pass USB20CV Chapter9
usb: dwc3: gadget: fix set_halt() bug with pending transfers
crypto: algif - avoid excessive use of socket buffer in skcipher
mm: Remove false WARN_ON from pagecache_isize_extended()
x86, apic: Handle a bad TSC more gracefully
posix-timers: Fix stack info leak in timer_create()
mac80211: fix typo in starting baserate for rts_cts_rate_idx
PM / Sleep: fix recovery during resuming from hibernation
tty: Fix high cpu load if tty is unreleaseable
quota: Properly return errors from dquot_writeback_dquots()
ext3: Don't check quota format when there are no quota files
nfsd4: fix crash on unknown operation number
cpc925_edac: Report UE events properly
e7xxx_edac: Report CE events properly
i3200_edac: Report CE events properly
i82860_edac: Report CE events properly
scsi: Fix error handling in SCSI_IOCTL_SEND_COMMAND
lib/bitmap.c: fix undefined shift in __bitmap_shift_{left|right}()
cgroup/kmemleak: add kmemleak_free() for cgroup deallocations.
usb: Do not allow usb_alloc_streams on unconfigured devices
USB: opticon: fix non-atomic allocation in write path
usb-storage: handle a skipped data phase
spi: pxa2xx: toggle clocks on suspend if not disabled by runtime PM
spi: pl022: Fix incorrect dma_unmap_sg
usb: dwc3: gadget: Properly initialize LINK TRB
wireless: rt2x00: add new rt2800usb device
USB: option: add Haier CE81B CDMA modem
usb: option: add support for Telit LE910
USB: cdc-acm: only raise DTR on transitions from B0
USB: cdc-acm: add device id for GW Instek AFG-2225
usb: serial: ftdi_sio: add "bricked" FTDI device PID
usb: serial: ftdi_sio: add Awinda Station and Dongle products
USB: serial: cp210x: add Silicon Labs 358x VID and PID
serial: Fix divide-by-zero fault in uart_get_divisor()
staging:iio:ade7758: Remove "raw" from channel name
staging:iio:ade7758: Fix check if channels are enabled in prenable
staging:iio:ade7758: Fix NULL pointer deref when enabling buffer
staging:iio:ad5933: Drop "raw" from channel names
staging:iio:ad5933: Fix NULL pointer deref when enabling buffer
OOM, PM: OOM killed task shouldn't escape PM suspend
freezer: Do not freeze tasks killed by OOM killer
ext4: fix oops when loading block bitmap failed
cpufreq: intel_pstate: Fix setting max_perf_pct in performance policy
ext4: fix overflow when updating superblock backups after resize
ext4: check s_chksum_driver when looking for bg csum presence
ext4: fix reservation overflow in ext4_da_write_begin
ext4: add ext4_iget_normal() which is to be used for dir tree lookups
ext4: grab missed write_count for EXT4_IOC_SWAP_BOOT
ext4: don't check quota format when there are no quota files
ext4: check EA value offset when loading
jbd2: free bh when descriptor block checksum fails
MIPS: tlbex: Properly fix HUGE TLB Refill exception handler
target: Fix APTPL metadata handling for dynamic MappedLUNs
target: Fix queue full status NULL pointer for SCF_TRANSPORT_TASK_SENSE
qla_target: don't delete changed nacls
ARC: Update order of registers in KGDB to match GDB 7.5
ARC: [nsimosci] Allow "headless" models to boot
KVM: x86: Emulator fixes for eip canonical checks on near branches
KVM: x86: Fix wrong masking on relative jump/call
kvm: x86: don't kill guest on unknown exit reason
KVM: x86: Check non-canonical addresses upon WRMSR
KVM: x86: Improve thread safety in pit
KVM: x86: Prevent host from panicking on shared MSR writes.
kvm: fix excessive pages un-pinning in kvm_iommu_map error path.
media: tda7432: Fix setting TDA7432_MUTE bit for TDA7432_RF register
media: ds3000: fix LNB supply voltage on Tevii S480 on initialization
media: em28xx-v4l: give back all active video buffers to the vb2 core properly on streaming stop
media: v4l2-common: fix overflow in v4l_bound_align_image()
drm/nouveau/bios: memset dcb struct to zero before parsing
drm/tilcdc: Fix the error path in tilcdc_load()
drm/ast: Fix HW cursor image
Input: i8042 - quirks for Fujitsu Lifebook A544 and Lifebook AH544
Input: i8042 - add noloop quirk for Asus X750LN
framebuffer: fix border color
modules, lock around setting of MODULE_STATE_UNFORMED
dm log userspace: fix memory leak in dm_ulog_tfr_init failure path
block: fix alignment_offset math that assumes io_min is a power-of-2
drbd: compute the end before rb_insert_augmented()
dm bufio: update last_accessed when relinking a buffer
virtio_pci: fix virtio spec compliance on restore
selinux: fix inode security list corruption
pstore: Fix duplicate {console,ftrace}-efi entries
mfd: rtsx_pcr: Fix MSI enable error handling
mnt: Prevent pivot_root from creating a loop in the mount tree
UBI: add missing kmem_cache_free() in process_pool_aeb error path
random: add and use memzero_explicit() for clearing data
crypto: more robust crypto_memneq
fix misuses of f_count() in ppp and netlink
kill wbuf_queued/wbuf_dwork_lock
ALSA: pcm: Zero-clear reserved fields of PCM status ioctl in compat mode
evm: check xattr value length and type in evm_inode_setxattr()
x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE
x86_64, entry: Fix out of bounds read on sysenter
x86_64, entry: Filter RFLAGS.NT on entry from userspace
x86, flags: Rename X86_EFLAGS_BIT1 to X86_EFLAGS_FIXED
x86, fpu: shift drop_init_fpu() from save_xstate_sig() to handle_signal()
x86, fpu: __restore_xstate_sig()->math_state_restore() needs preempt_disable()
x86: Reject x32 executables if x32 ABI not supported
vfs: fix data corruption when blocksize < pagesize for mmaped data
UBIFS: fix free log space calculation
UBIFS: fix a race condition
UBIFS: remove mst_mutex
fs: Fix theoretical division by 0 in super_cache_scan().
fs: make cont_expand_zero interruptible
mmc: rtsx_pci_sdmmc: fix incorrect last byte in R2 response
libata-sff: Fix controllers with no ctl port
pata_serverworks: disable 64-KB DMA transfers on Broadcom OSB4 IDE Controller
Revert "percpu: free percpu allocation info for uniprocessor system"
lockd: Try to reconnect if statd has moved
drivers/net: macvtap and tun depend on INET
ipv4: dst_entry leak in ip_send_unicast_reply()
ax88179_178a: fix bonding failure
ipv4: fix nexthop attlen check in fib_nh_match
tracing/syscalls: Ignore numbers outside NR_syscalls' range
Linux 3.10.59
ecryptfs: avoid to access NULL pointer when write metadata in xattr
ARM: at91/PMC: don't forget to write PMC_PCDR register to disable clocks
ALSA: usb-audio: Add support for Steinberg UR22 USB interface
ALSA: emu10k1: Fix deadlock in synth voice lookup
ALSA: pcm: use the same dma mmap codepath both for arm and arm64
arm64: compat: fix compat types affecting struct compat_elf_prpsinfo
spi: dw-mid: terminate ongoing transfers at exit
kernel: add support for gcc 5
fanotify: enable close-on-exec on events' fd when requested in fanotify_init()
mm: clear __GFP_FS when PF_MEMALLOC_NOIO is set
Bluetooth: Fix issue with USB suspend in btusb driver
Bluetooth: Fix HCI H5 corrupted ack value
rt2800: correct BBP1_TX_POWER_CTRL mask
PCI: Generate uppercase hex for modalias interface class
PCI: Increase IBM ipr SAS Crocodile BARs to at least system page size
iwlwifi: Add missing PCI IDs for the 7260 series
NFSv4.1: Fix an NFSv4.1 state renewal regression
NFSv4: fix open/lock state recovery error handling
NFSv4: Fix lock recovery when CREATE_SESSION/SETCLIENTID_CONFIRM fails
lzo: check for length overrun in variable length encoding.
Revert "lzo: properly check for overruns"
Documentation: lzo: document part of the encoding
m68k: Disable/restore interrupts in hwreg_present()/hwreg_write()
Drivers: hv: vmbus: Fix a bug in vmbus_open()
Drivers: hv: vmbus: Cleanup vmbus_establish_gpadl()
Drivers: hv: vmbus: Cleanup vmbus_teardown_gpadl()
Drivers: hv: vmbus: Cleanup vmbus_post_msg()
firmware_class: make sure fw requests contain a name
qla2xxx: Use correct offset to req-q-out for reserve calculation
mptfusion: enable no_write_same for vmware scsi disks
be2iscsi: check ip buffer before copying
regmap: fix NULL pointer dereference in _regmap_write/read
regmap: debugfs: fix possbile NULL pointer dereference
spi: dw-mid: check that DMA was inited before exit
spi: dw-mid: respect 8 bit mode
x86/intel/quark: Switch off CR4.PGE so TLB flush uses CR3 instead
kvm: don't take vcpu mutex for obviously invalid vcpu ioctls
KVM: s390: unintended fallthrough for external call
kvm: x86: fix stale mmio cache bug
fs: Add a missing permission check to do_umount
Btrfs: fix race in WAIT_SYNC ioctl
Btrfs: fix build_backref_tree issue with multiple shared blocks
Btrfs: try not to ENOSPC on log replay
Linux 3.10.58
USB: cp210x: add support for Seluxit USB dongle
USB: serial: cp210x: added Ketra N1 wireless interface support
USB: Add device quirk for ASUS T100 Base Station keyboard
ipv6: reallocate addrconf router for ipv6 address when lo device up
tcp: fixing TLP's FIN recovery
sctp: handle association restarts when the socket is closed.
ip6_gre: fix flowi6_proto value in xmit path
hyperv: Fix a bug in netvsc_start_xmit()
tg3: Allow for recieve of full-size 8021AD frames
tg3: Work around HW/FW limitations with vlan encapsulated frames
l2tp: fix race while getting PMTU on PPP pseudo-wire
openvswitch: fix panic with multiple vlan headers
packet: handle too big packets for PACKET_V3
tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced()
sit: Fix ipip6_tunnel_lookup device matching criteria
myri10ge: check for DMA mapping errors
Linux 3.10.57
cpufreq: ondemand: Change the calculation of target frequency
cpufreq: Fix wrong time unit conversion
nl80211: clear skb cb before passing to netlink
drbd: fix regression 'out of mem, failed to invoke fence-peer helper'
jiffies: Fix timeval conversion to jiffies
md/raid5: disable 'DISCARD' by default due to safety concerns.
media: vb2: fix VBI/poll regression
mm: numa: Do not mark PTEs pte_numa when splitting huge pages
mm, thp: move invariant bug check out of loop in __split_huge_page_map
ring-buffer: Fix infinite spin in reading buffer
init/Kconfig: Fix HAVE_FUTEX_CMPXCHG to not break up the EXPERT menu
perf: fix perf bug in fork()
udf: Avoid infinite loop when processing indirect ICBs
Linux 3.10.56
vm_is_stack: use for_each_thread() rather then buggy while_each_thread()
oom_kill: add rcu_read_lock() into find_lock_task_mm()
oom_kill: has_intersects_mems_allowed() needs rcu_read_lock()
oom_kill: change oom_kill.c to use for_each_thread()
introduce for_each_thread() to replace the buggy while_each_thread()
kernel/fork.c:copy_process(): unify CLONE_THREAD-or-thread_group_leader code
arm: multi_v7_defconfig: Enable Zynq UART driver
ext2: Fix fs corruption in ext2_get_xip_mem()
serial: 8250_dma: check the result of TX buffer mapping
ARM: 7748/1: oabi: handle faults when loading swi instruction from userspace
netfilter: nf_conntrack: avoid large timeout for mid-stream pickup
PM / sleep: Use valid_state() for platform-dependent sleep states only
PM / sleep: Add state field to pm_states[] entries
ipvs: fix ipv6 hook registration for local replies
ipvs: Maintain all DSCP and ECN bits for ipv6 tun forwarding
ipvs: avoid netns exit crash on ip_vs_conn_drop_conntrack
md/raid1: fix_read_error should act on all non-faulty devices.
media: cx18: fix kernel oops with tda8290 tuner
Fix nasty 32-bit overflow bug in buffer i/o code.
perf kmem: Make it work again on non NUMA machines
perf: Fix a race condition in perf_remove_from_context()
alarmtimer: Lock k_itimer during timer callback
alarmtimer: Do not signal SIGEV_NONE timers
parisc: Only use -mfast-indirect-calls option for 32-bit kernel builds
powerpc/perf: Fix ABIv2 kernel backtraces
sched: Fix unreleased llc_shared_mask bit during CPU hotplug
ocfs2/dlm: do not get resource spinlock if lockres is new
nilfs2: fix data loss with mmap()
fs/notify: don't show f_handle if exportfs_encode_inode_fh failed
fsnotify/fdinfo: use named constants instead of hardcoded values
kcmp: fix standard comparison bug
Revert "mac80211: disable uAPSD if all ACs are under ACM"
usb: dwc3: core: fix ordering for PHY suspend
usb: dwc3: core: fix order of PM runtime calls
usb: host: xhci: fix compliance mode workaround
genhd: fix leftover might_sleep() in blk_free_devt()
lockd: fix rpcbind crash on lockd startup failure
rtlwifi: rtl8192cu: Add new ID
percpu: perform tlb flush after pcpu_map_pages() failure
percpu: fix pcpu_alloc_pages() failure path
percpu: free percpu allocation info for uniprocessor system
ata_piix: Add Device IDs for Intel 9 Series PCH
Input: i8042 - add nomux quirk for Avatar AVIU-145A6
Input: i8042 - add Fujitsu U574 to no_timeout dmi table
Input: atkbd - do not try 'deactivate' keyboard on any LG laptops
Input: elantech - fix detection of touchpad on ASUS s301l
Input: synaptics - add support for ForcePads
Input: serport - add compat handling for SPIOCSTYPE ioctl
dm crypt: fix access beyond the end of allocated space
block: Fix dev_t minor allocation lifetime
workqueue: apply __WQ_ORDERED to create_singlethread_workqueue()
Revert "iwlwifi: dvm: don't enable CTS to self"
SCSI: libiscsi: fix potential buffer overrun in __iscsi_conn_send_pdu
NFC: microread: Potential overflows in microread_target_discovered()
iscsi-target: Fix memory corruption in iscsit_logout_post_handler_diffcid
iscsi-target: avoid NULL pointer in iscsi_copy_param_list failure
Target/iser: Don't put isert_conn inside disconnected handler
Target/iser: Get isert_conn reference once got to connected_handler
iio:inkern: fix overwritten -EPROBE_DEFER in of_iio_channel_get_by_name
iio:magnetometer: bugfix magnetometers gain values
iio: adc: ad_sigma_delta: Fix indio_dev->trig assignment
iio: st_sensors: Fix indio_dev->trig assignment
iio: meter: ade7758: Fix indio_dev->trig assignment
iio: inv_mpu6050: Fix indio_dev->trig assignment
iio: gyro: itg3200: Fix indio_dev->trig assignment
iio:trigger: modify return value for iio_trigger_get
CIFS: Fix SMB2 readdir error handling
CIFS: Fix directory rename error
ASoC: davinci-mcasp: Correct rx format unit configuration
shmem: fix nlink for rename overwrite directory
x86 early_ioremap: Increase FIX_BTMAPS_SLOTS to 8
KVM: x86: handle idiv overflow at kvm_write_tsc
regmap: Fix handling of volatile registers for format_write() chips
ACPICA: Update to GPIO region handler interface.
MIPS: mcount: Adjust stack pointer for static trace in MIPS32
MIPS: ZBOOT: add missing <linux/string.h> include
ARM: 8165/1: alignment: don't break misaligned NEON load/store
ARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel
ARM: 8133/1: use irq_set_affinity with force=false when migrating irqs
ARM: 8128/1: abort: don't clear the exclusive monitors
NFSv4: Fix another bug in the close/open_downgrade code
NFSv4: nfs4_state_manager() vs. nfs_server_remove_lists()
usb:hub set hub->change_bits when over-current happens
usb: dwc3: omap: fix ordering for runtime pm calls
USB: EHCI: unlink QHs even after the controller has stopped
USB: storage: Add quirks for Entrega/Xircom USB to SCSI converters
USB: storage: Add quirk for Ariston Technologies iConnect USB to SCSI adapter
USB: storage: Add quirk for Adaptec USBConnect 2000 USB-to-SCSI Adapter
storage: Add single-LUN quirk for Jaz USB Adapter
usb: hub: take hub->hdev reference when processing from eventlist
xhci: fix oops when xhci resumes from hibernate with hw lpm capable devices
xhci: Fix null pointer dereference if xhci initialization fails
USB: zte_ev: fix removed PIDs
USB: ftdi_sio: add support for NOVITUS Bono E thermal printer
USB: sierra: add 1199:68AA device ID
USB: sierra: avoid CDC class functions on "68A3" devices
USB: zte_ev: remove duplicate Qualcom PID
USB: zte_ev: remove duplicate Gobi PID
Revert "USB: option,zte_ev: move most ZTE CDMA devices to zte_ev"
USB: option: add VIA Telecom CDS7 chipset device id
USB: option: reduce interrupt-urb logging verbosity
USB: serial: fix potential heap buffer overflow
USB: sisusb: add device id for Magic Control USB video
USB: serial: fix potential stack buffer overflow
USB: serial: pl2303: add device id for ztek device
xtensa: fix a6 and a7 handling in fast_syscall_xtensa
xtensa: fix TLBTEMP_BASE_2 region handling in fast_second_level_miss
xtensa: fix access to THREAD_RA/THREAD_SP/THREAD_DS
xtensa: fix address checks in dma_{alloc,free}_coherent
xtensa: replace IOCTL code definitions with constants
drm/radeon: add connector quirk for fujitsu board
drm/vmwgfx: Fix a potential infinite spin waiting for fifo idle
drm/ast: AST2000 cannot be detected correctly
drm/i915: Wait for vblank before enabling the TV encoder
drm/i915: Remove bogus __init annotation from DMI callbacks
HID: logitech-dj: prevent false errors to be shown
HID: magicmouse: sanity check report size in raw_event() callback
HID: picolcd: sanity check report size in raw_event() callback
cfq-iosched: Fix wrong children_weight calculation
ALSA: pcm: fix fifo_size frame calculation
ALSA: hda - Fix invalid pin powermap without jack detection
ALSA: hda - Fix COEF setups for ALC1150 codec
ALSA: core: fix buffer overflow in snd_info_get_line()
arm64: ptrace: fix compat hardware watchpoint reporting
trace: Fix epoll hang when we race with new entries
i2c: at91: Fix a race condition during signal handling in at91_do_twi_xfer.
i2c: at91: add bound checking on SMBus block length bytes
arm64: flush TLS registers during exec
ibmveth: Fix endian issues with rx_no_buffer statistic
ahci: add pcid for Marvel 0x9182 controller
ahci: Add Device IDs for Intel 9 Series PCH
pata_scc: propagate return value of scc_wait_after_reset
drm/i915: read HEAD register back in init_ring_common() to enforce ordering
drm/radeon: load the lm63 driver for an lm64 thermal chip.
drm/ttm: Choose a pool to shrink correctly in ttm_dma_pool_shrink_scan().
drm/ttm: Fix possible division by 0 in ttm_dma_pool_shrink_scan().
drm/tilcdc: fix double kfree
drm/tilcdc: fix release order on exit
drm/tilcdc: panel: fix leak when unloading the module
drm/tilcdc: tfp410: fix dangling sysfs connector node
drm/tilcdc: slave: fix dangling sysfs connector node
drm/tilcdc: panel: fix dangling sysfs connector node
carl9170: fix sending URBs with wrong type when using full-speed
Linux 3.10.55
libceph: gracefully handle large reply messages from the mon
libceph: rename ceph_msg::front_max to front_alloc_len
tpm: Provide a generic means to override the chip returned timeouts
vfs: fix bad hashing of dentries
dcache.c: get rid of pointless macros
IB/srp: Fix deadlock between host removal and multipathd
blkcg: don't call into policy draining if root_blkg is already gone
mtd: nand: omap: Fix 1-bit Hamming code scheme, omap_calculate_ecc()
mtd/ftl: fix the double free of the buffers allocated in build_maps()
CIFS: Fix wrong restart readdir for SMB1
CIFS: Fix wrong filename length for SMB2
CIFS: Fix wrong directory attributes after rename
CIFS: Possible null ptr deref in SMB2_tcon
CIFS: Fix async reading on reconnects
CIFS: Fix STATUS_CANNOT_DELETE error mapping for SMB2
libceph: do not hard code max auth ticket len
libceph: add process_one_ticket() helper
libceph: set last_piece in ceph_msg_data_pages_cursor_init() correctly
md/raid1,raid10: always abort recover on write error.
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't dirty buffers beyond EOF
xfs: quotacheck leaves dquot buffers without verifiers
RDMA/iwcm: Use a default listen backlog if needed
md/raid10: Fix memory leak when raid10 reshape completes.
md/raid10: fix memory leak when reshaping a RAID10.
md/raid6: avoid data corruption during recovery of double-degraded RAID6
Bluetooth: Avoid use of session socket after the session gets freed
Bluetooth: never linger on process exit
mnt: Add tests for unprivileged remount cases that have found to be faulty
mnt: Change the default remount atime from relatime to the existing value
mnt: Correct permission checks in do_remount
mnt: Move the test for MNT_LOCK_READONLY from change_mount_flags into do_remount
mnt: Only change user settable mount flags in remount
ring-buffer: Up rb_iter_peek() loop count to 3
ring-buffer: Always reset iterator to reader page
ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
ACPI: Run fixed event device notifications in process context
ACPICA: Utilities: Fix memory leak in acpi_ut_copy_iobject_to_iobject
bfa: Fix undefined bit shift on big-endian architectures with 32-bit DMA address
ASoC: pxa-ssp: drop SNDRV_PCM_FMTBIT_S24_LE
ASoC: max98090: Fix missing free_irq
ASoC: samsung: Correct I2S DAI suspend/resume ops
ASoC: wm_adsp: Add missing MODULE_LICENSE
ASoC: pcm: fix dpcm_path_put in dpcm runtime update
openrisc: Rework signal handling
MIPS: Fix accessing to per-cpu data when flushing the cache
MIPS: OCTEON: make get_system_type() thread-safe
MIPS: asm: thread_info: Add _TIF_SECCOMP flag
MIPS: Cleanup flags in syscall flags handlers.
MIPS: asm/reg.h: Make 32- and 64-bit definitions available at the same time
MIPS: Remove BUG_ON(!is_fpu_owner()) in do_ade()
MIPS: tlbex: Fix a missing statement for HUGETLB
MIPS: Prevent user from setting FCSR cause bits
MIPS: GIC: Prevent array overrun
drivers: scsi: storvsc: Correctly handle TEST_UNIT_READY failure
Drivers: scsi: storvsc: Implement a eh_timed_out handler
powerpc/pseries: Failure on removing device node
powerpc/mm: Use read barrier when creating real_pte
powerpc/mm/numa: Fix break placement
regulator: arizona-ldo1: remove bypass functionality
mfd: omap-usb-host: Fix improper mask use.
kernel/smp.c:on_each_cpu_cond(): fix warning in fallback path
CAPABILITIES: remove undefined caps from all processes
tpm: missing tpm_chip_put in tpm_get_random()
firmware: Do not use WARN_ON(!spin_is_locked())
spi: omap2-mcspi: Configure hardware when slave driver changes mode
spi: orion: fix incorrect handling of cell-index DT property
iommu/amd: Fix cleanup_domain for mass device removal
media: media-device: Remove duplicated memset() in media_enum_entities()
media: au0828: Only alt setting logic when needed
media: xc4000: Fix get_frequency()
media: xc5000: Fix get_frequency()
Linux 3.10.54
USB: fix build error with CONFIG_PM_RUNTIME disabled
NFSv4: Fix problems with close in the presence of a delegation
NFSv3: Fix another acl regression
svcrdma: Select NFSv4.1 backchannel transport based on forward channel
NFSD: Decrease nfsd_users in nfsd_startup_generic fail
usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1
USB: whiteheat: Added bounds checking for bulk command response
USB: ftdi_sio: Added PID for new ekey device
USB: ftdi_sio: add Basic Micro ATOM Nano USB2Serial PID
ARM: OMAP2+: hwmod: Rearm wake-up interrupts for DT when MUSB is idled
usb: xhci: amd chipset also needs short TX quirk
xhci: Treat not finding the event_seg on COMP_STOP the same as COMP_STOP_INVAL
Staging: speakup: Update __speakup_paste_selection() tty (ab)usage to match vt
jbd2: fix infinite loop when recovering corrupt journal blocks
mei: nfc: fix memory leak in error path
mei: reset client state on queued connect request
Btrfs: fix csum tree corruption, duplicate and outdated checksums
hpsa: fix bad -ENOMEM return value in hpsa_big_passthru_ioctl
x86/efi: Enforce CONFIG_RELOCATABLE for EFI boot stub
x86_64/vsyscall: Fix warn_bad_vsyscall log output
x86: don't exclude low BIOS area when allocating address space for non-PCI cards
drm/radeon: add additional SI pci ids
ext4: fix BUG_ON in mb_free_blocks()
kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601)
Revert "KVM: x86: Increase the number of fixed MTRR regs to 10"
KVM: nVMX: fix "acknowledge interrupt on exit" when APICv is in use
KVM: x86: always exit on EOIs for interrupts listed in the IOAPIC redir table
KVM: x86: Inter-privilege level ret emulation is not implemeneted
crypto: ux500 - make interrupt mode plausible
serial: core: Preserve termios c_cflag for console resume
ext4: fix ext4_discard_allocated_blocks() if we can't allocate the pa struct
drivers/i2c/busses: use correct type for dma_map/unmap
hwmon: (dme1737) Prevent overflow problem when writing large limits
hwmon: (ads1015) Fix out-of-bounds array access
hwmon: (lm85) Fix various errors on attribute writes
hwmon: (ads1015) Fix off-by-one for valid channel index checking
hwmon: (gpio-fan) Prevent overflow problem when writing large limits
hwmon: (lm78) Fix overflow problems seen when writing large temperature limits
hwmon: (sis5595) Prevent overflow problem when writing large limits
drm: omapdrm: fix compiler errors
ARM: OMAP3: Fix choice of omap3_restore_es function in OMAP34XX rev3.1.2 case.
mei: start disconnect request timer consistently
ALSA: hda/realtek - Avoid setting wrong COEF on ALC269 & co
ALSA: hda/ca0132 - Don't try loading firmware at resume when already failed
ALSA: virtuoso: add Xonar Essence STX II support
ALSA: hda - fix an external mic jack problem on a HP machine
USB: Fix persist resume of some SS USB devices
USB: ehci-pci: USB host controller support for Intel Quark X1000
USB: serial: ftdi_sio: Add support for new Xsens devices
USB: serial: ftdi_sio: Annotate the current Xsens PID assignments
USB: OHCI: don't lose track of EDs when a controller dies
isofs: Fix unbounded recursion when processing relocated directories
HID: fix a couple of off-by-ones
HID: logitech: perform bounds checking on device_id early enough
stable_kernel_rules: Add pointer to netdev-FAQ for network patches
Linux 3.10.53
arch/sparc/math-emu/math_32.c: drop stray break operator
sparc64: ldc_connect() should not return EINVAL when handshake is in progress.
sunsab: Fix detection of BREAK on sunsab serial console
bbc-i2c: Fix BBC I2C envctrl on SunBlade 2000
sparc64: Guard against flushing openfirmware mappings.
sparc64: Do not insert non-valid PTEs into the TSB hash table.
sparc64: Add membar to Niagara2 memcpy code.
sparc64: Fix huge TSB mapping on pre-UltraSPARC-III cpus.
sparc64: Don't bark so loudly about 32-bit tasks generating 64-bit fault addresses.
sparc64: Fix top-level fault handling bugs.
sparc64: Handle 32-bit tasks properly in compute_effective_address().
sparc64: Make itc_sync_lock raw
sparc64: Fix argument sign extension for compat_sys_futex().
sctp: fix possible seqlock seadlock in sctp_packet_transmit()
iovec: make sure the caller actually wants anything in memcpy_fromiovecend
net: Correctly set segment mac_len in skb_segment().
macvlan: Initialize vlan_features to turn on offload support.
net: sctp: inherit auth_capable on INIT collisions
tcp: Fix integer-overflow in TCP vegas
tcp: Fix integer-overflows in TCP veno
net: sendmsg: fix NULL pointer dereference
ip: make IP identifiers less predictable
inetpeer: get rid of ip_id_count
bnx2x: fix crash during TSO tunneling
Linux 3.10.52
x86/espfix/xen: Fix allocation of pages for paravirt page tables
lib/btree.c: fix leak of whole btree nodes
net/l2tp: don't fall back on UDP [get|set]sockopt
net: mvneta: replace Tx timer with a real interrupt
net: mvneta: add missing bit descriptions for interrupt masks and causes
net: mvneta: do not schedule in mvneta_tx_timeout
net: mvneta: use per_cpu stats to fix an SMP lock up
net: mvneta: increase the 64-bit rx/tx stats out of the hot path
Revert "mac80211: move "bufferable MMPDU" check to fix AP mode scan"
staging: vt6655: Fix Warning on boot handle_irq_event_percpu.
x86_64/entry/xen: Do not invoke espfix64 on Xen
x86, espfix: Make it possible to disable 16-bit support
x86, espfix: Make espfix64 a Kconfig option, fix UML
x86, espfix: Fix broken header guard
x86, espfix: Move espfix definitions into a separate header file
x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack
Revert "x86-64, modify_ldt: Make support for 16-bit segments a runtime option"
timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks
printk: rename printk_sched to printk_deferred
iio: buffer: Fix demux table creation
staging: vt6655: Fix disassociated messages every 10 seconds
mm, thp: do not allow thp faults to avoid cpuset restrictions
scsi: handle flush errors properly
rapidio/tsi721_dma: fix failure to obtain transaction descriptor
cfg80211: fix mic_failure tracing
ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout
crypto: af_alg - properly label AF_ALG socket
Linux 3.10.51
core, nfqueue, openvswitch: Orphan frags in skb_zerocopy and handle errors
x86/efi: Include a .bss section within the PE/COFF headers
s390/ptrace: fix PSW mask check
Fix gcc-4.9.0 miscompilation of load_balance() in scheduler
mm: hugetlb: fix copy_hugetlb_page_range()
x86_32, entry: Store badsys error code in %eax
hwmon: (smsc47m192) Fix temperature limit and vrm write operations
parisc: Remove SA_RESTORER define
coredump: fix the setting of PF_DUMPCORE
Input: fix defuzzing logic
slab_common: fix the check for duplicate slab names
slab_common: Do not check for duplicate slab names
tracing: Fix wraparound problems in "uptime" trace clock
blkcg: don't call into policy draining if root_blkg is already gone
ahci: add support for the Promise FastTrak TX8660 SATA HBA (ahci mode)
libata: introduce ata_host->n_tags to avoid oops on SAS controllers
libata: support the ata host which implements a queue depth less than 32
block: don't assume last put of shared tags is for the host
block: provide compat ioctl for BLKZEROOUT
media: tda10071: force modulation to QPSK on DVB-S
media: hdpvr: fix two audio bugs
Linux 3.10.50
ARC: Implement ptrace(PTRACE_GET_THREAD_AREA)
sched: Fix possible divide by zero in avg_atom() calculation
locking/mutex: Disable optimistic spinning on some architectures
PM / sleep: Fix request_firmware() error at resume
dm cache metadata: do not allow the data block size to change
dm thin metadata: do not allow the data block size to change
alarmtimer: Fix bug where relative alarm timers were treated as absolute
drm/radeon: avoid leaking edid data
drm/qxl: return IRQ_NONE if it was not our irq
drm/radeon: set default bl level to something reasonable
irqchip: gic: Fix core ID calculation when topology is read from DT
irqchip: gic: Add support for cortex a7 compatible string
ring-buffer: Fix polling on trace_pipe
mwifiex: fix Tx timeout issue
perf/x86/intel: ignore CondChgd bit to avoid false NMI handling
ipv4: fix buffer overflow in ip_options_compile()
dns_resolver: Null-terminate the right string
dns_resolver: assure that dns_query() result is null-terminated
sunvnet: clean up objects created in vnet_new() on vnet_exit()
net: pppoe: use correct channel MTU when using Multilink PPP
net: sctp: fix information leaks in ulpevent layer
tipc: clear 'next'-pointer of message fragments before reassembly
be2net: set EQ DB clear-intr bit in be_open()
netlink: Fix handling of error from netlink_dump().
net: mvneta: Fix big endian issue in mvneta_txq_desc_csum()
net: mvneta: fix operation in 10 Mbit/s mode
appletalk: Fix socket referencing in skb
tcp: fix false undo corner cases
igmp: fix the problem when mc leave group
net: qmi_wwan: add two Sierra Wireless/Netgear devices
net: qmi_wwan: Add ID for Telewell TW-LTE 4G v2
ipv4: icmp: Fix pMTU handling for rare case
tcp: Fix divide by zero when pushing during tcp-repair
bnx2x: fix possible panic under memory stress
net: fix sparse warning in sk_dst_set()
ipv4: irq safe sk_dst_[re]set() and ipv4_sk_update_pmtu() fix
ipv4: fix dst race in sk_dst_get()
8021q: fix a potential memory leak
net: sctp: check proc_dointvec result in proc_sctp_do_auth
tcp: fix tcp_match_skb_to_sack() for unaligned SACK at end of an skb
ip_tunnel: fix ip_tunnel_lookup
shmem: fix splicing from a hole while it's punched
shmem: fix faulting into a hole, not taking i_mutex
shmem: fix faulting into a hole while it's punched
iwlwifi: dvm: don't enable CTS to self
igb: do a reset on SR-IOV re-init if device is down
hwmon: (adt7470) Fix writes to temperature limit registers
hwmon: (da9052) Don't use dash in the name attribute
hwmon: (da9055) Don't use dash in the name attribute
tracing: Add ftrace_trace_stack into __trace_puts/__trace_bputs
tracing: Fix graph tracer with stack tracer on other archs
fuse: handle large user and group ID
Bluetooth: Ignore H5 non-link packets in non-active state
Drivers: hv: util: Fix a bug in the KVP code
media: gspca_pac7302: Add new usb-id for Genius i-Look 317
usb: Check if port status is equal to RxDetect
Signed-off-by: Ian Maund <imaund@codeaurora.org>
When multiple threads race to update HMP scheduler tunables, at present,
the tunables which require big/small task count fix-up can be updated
without fix-up and it can trigger BUG_ON().
This happens because sched_hmp_proc_update_handler() acquires rq locks and
does fix-up only when number of big/small tasks affecting tunables are
updated even though the function sched_hmp_proc_update_handler() calls
set_hmp_defaults() which re-calculates all sysctl input data at that
point. Consequently a thread that is trying to update a tunable which does
not affect big/small task count can call set_hmp_defaults() and update
big/small task count affecting tunable without fix-up if there is another
thread and it just set fix-up needed sysctl value.
Example of problem scenario :
thread 0 thread 1
Set sched_small_task – needs fix up.
Set sched_init_task_load – no fix
up needed.
proc_dointvec_minmax() completed
which means sysctl_sched_small_task has
new value.
Call set_hmp_defaults() without
lock/fixup. set_hmp_defaults() still
updates sched_small_tasks with new
sysctl_sched_small_task value by
thread 0.
Fix such issue by embracing proc update handler with already existing
policy mutex.
CRs-fixed: 812443
Change-Id: I7aa4c0efc1ca56e28dc0513480aca3264786d4f7
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
find_busiest_group() can end up returning a NULL group due to load based
checks even though there are tasks that can be migrated to higher capacity
CPUs (LBF_BIG_TASK_ACTIVE_BALANCE) or EA core rotation is possible
(LBF_EA_ACTIVE_BALANCE). To get best power and performance ensure that load
balance does attempt to pull tasks when HMP_ACTIVE_BALANCE flag is set.
Since sched boost also falls under the same category club it into the same
generic condition.
Change-Id: I3db7ec200d2a038917b1f2341602eb87b5aed289
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
It may be desirable to discourage upmigration of tasks belonging to
some cgroups. Add a per-cgroup flag (upmigrate_discourage) that
discourages upmigration of tasks of a cgroup. Tasks of the cgroup are
allowed to upmigrate only under overcommitted scenario.
Change-Id: I1780e420af1b6865c5332fb55ee1ee408b74d8ce
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
When performance CPU runs idle or newly idle load balancer to pull a
task on power efficient CPU, the load balancer always fails and enters
idle mode if the big task on the power efficient CPU is running. This is
suboptimal when the running task on the power efficient CPU doesn't fit
on the power efficient CPU as it's quite possible that the big task will
sustain on the power efficient CPU until it's preempted while there is
a performance CPU sitting idle.
Revise load balancer algorithm to actively migrate big tasks on power
efficient CPU to performance CPU when performance CPU runs idle or newly
idle load balancer.
Change-Id: Iaf05e0236955fdcc7ded0ff09af0880050a2be32
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
With EA (Energy Awareness), idle_balance() on a CPU runs on behalf of most
power efficient idle CPU among the CPUs in its sched domain level under the
condition that the substitute idle CPU should be limited to a CPU which has
the same capacity with original idle CPU.
It is found that at present idle_balance() spans all the CPUs in its sched
domain and run idle balancer on behalf of any CPU within the domain which
could be all the CPUs in the system which consequently makes idle balancer
on a performance CPU always runs on behalf of a power efficient idle CPU.
This would cause for idle performance CPUs to fail to pull tasks from power
efficient CPUs always when there is only an online performance CPU.
Limit search CPUs to cache sharing CPUs with original idle CPU to ensure to
run idle balancre on behalf of more power efficient CPU but still has the
same capacity with original CPU to fix such issue.
Change-Id: I0575290c24f28db011d9353915186e64df7e57fe
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
When a lower capacity CPU attempts to pull work from a higher capacity CPU,
during load balance, it does not distinguish between tasks that will fit
or not fit on the destination CPU. This causes suboptimal load balancing
decisions whereby big tasks end up on the lower capacity CPUs and little
tasks remain on higher capacity CPUs. Avoid this behavior, by first
restricting search to only include tasks that fit on the destination CPU.
If such a task cannot be found, remove this restriction so that any task
can be pulled over to the destination CPU. This behavior is not applicable
during sched_boost, however, as none of the tasks will fit on a lower
capacity CPU.
Change-Id: I1093420a629a0886fc3375849372ab7cf42e928e
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Hiroshi Shimamoto