Catalin Marinas bbd24eba8a ARM: 8036/1: Enable IRQs before attempting to read user space in __und_usr ... The Undef abort handler in the kernel reads the undefined instruction from user space. If the page table was modified from another CPU, the user access could fail and do_page_fault() will be executed with interrupts disabled. This can potentially deadlock on ARM11MPCore or on Cortex-A15 with erratum 798181 workaround enabled (both implying IPI for TLB maintenance with page table lock held). This patch enables the IRQs in __und_usr before attempting to read the instruction from user space. CRs-Fixed: 685372 Change-Id: Id6dc049b923b577373d38bb66a8404711c1a60f5 Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Arun KS <getarunks@gmail.com> Cc: Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ryan Mallon <rmallon@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Git-commit: 1417a6b8dc4db73055be9a3aa288b050e9dc06ab Git-repo: git://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git Signed-off-by: Kishan Kumar <kishank@codeaurora.org>		2014-07-07 15:48:05 +05:30
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Makefile	…
entry.S	ARM: 8036/1: Enable IRQs before attempting to read user space in __und_usr	2014-07-07 15:48:05 +05:30
vfp.h	…
vfpdouble.c	…
vfphw.S	…
vfpinstr.h	…
vfpmodule.c	arm: vfp: always clear vfp_current_hw_state when forcing reload	2013-10-22 15:34:24 +05:30
vfpsingle.c	…