Re: [syzbot] general protection fault in vma_is_shmem

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 8/21/22 16:31, Andrew Morton wrote:
On Sun, 21 Aug 2022 16:18:48 -0700 John Hubbard <jhubbard@xxxxxxxxxx> wrote:

vmas[] array.  We haven't messed with gup.c much this time around -
just one patch from Alistair ("mm/gup.c: simplify and fix
check_and_migrate_movable_pages() return codes").  It does touch this
area, but I can't immediately see how it could newly cause this.


Neither can I, even after looking at both of these recent commits to
gup.c in this branch:

commit 4d1225cd5560 ("mm/gup.c: simplify and fix
check_and_migrate_movable_pages() return codes")

commit 0e5d6dac6b65 ("mm/gup: fix FOLL_FORCE COW security issue and
remove FOLL_COW")

As you say, a bisection would really help here.

Might
https://lkml.kernel.org/r/20220821183547.950370-1-syoshida@xxxxxxxxxx
save us?



aha yes, that looks right.


thanks,
--
John Hubbard
NVIDIA




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux