[PATCH 0/2][request for stable 3.10 inclusion] vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than SIGBUS

[Sheng Yong <shengyong1@xxxxxxxxxx>]

Hi, Greg,
The commit 88b5d12 ("mm: propagate error from stack expansion even for
guard page") for 3.10-stable makes the testcase get "bus error", while
it had "segmentation fault" in older kernels.

===== testcase =====
int main(void)
{
	main();
	return 0;
}
====================

These 2 patches fix it by adding a VM_FAULT_SIGSEGV in all architecture
fault handlers.

[PATCH 1/2] is asjusted to ignore un-supported arch and driver in 3.10.
And some files are separated or renamed in newer kernel, so [PATCH 1/2]
is also adjusted to add the VM_FAULT_SIGSEGV handling in the original
files in 3.10.

thanks,
Sheng

Sheng Yong (1):
  vm: add VM_FAULT_SIGSEGV handling support

Linus Torvalds (1):
  vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than
    SIGBUS

 arch/alpha/mm/fault.c                   | 2 ++
 arch/arc/mm/fault.c                     | 2 ++
 arch/avr32/mm/fault.c                   | 2 ++
 arch/cris/mm/fault.c                    | 2 ++
 arch/frv/mm/fault.c                     | 2 ++
 arch/ia64/mm/fault.c                    | 2 ++
 arch/m32r/mm/fault.c                    | 2 ++
 arch/m68k/mm/fault.c                    | 2 ++
 arch/metag/mm/fault.c                   | 2 ++
 arch/microblaze/mm/fault.c              | 2 ++
 arch/mips/mm/fault.c                    | 2 ++
 arch/mn10300/mm/fault.c                 | 2 ++
 arch/openrisc/mm/fault.c                | 2 ++
 arch/parisc/mm/fault.c                  | 2 ++
 arch/powerpc/mm/fault.c                 | 2 ++
 arch/powerpc/platforms/cell/spu_fault.c | 2 +-
 arch/s390/mm/fault.c                    | 6 ++++++
 arch/score/mm/fault.c                   | 2 ++
 arch/sh/mm/fault.c                      | 2 ++
 arch/sparc/mm/fault_32.c                | 2 ++
 arch/sparc/mm/fault_64.c                | 2 ++
 arch/tile/mm/fault.c                    | 2 ++
 arch/um/kernel/trap.c                   | 2 ++
 arch/x86/mm/fault.c                     | 2 ++
 arch/xtensa/mm/fault.c                  | 2 ++
 include/linux/mm.h                      | 5 +++--
 mm/ksm.c                                | 2 +-
 mm/memory.c                             | 7 ++++---
 28 files changed, 61 insertions(+), 7 deletions(-)

-- 
1.8.3.4

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