tree 13f8dc7926e331b638e943a6759f9be7c87b7484
parent 7fcd473a6455450428795d20db7afd2691c92336
author Suren Baghdasaryan <surenb@google.com> 1688843530 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1688850482 -0700

mm: lock a vma before stack expansion

With recent changes necessitating mmap_lock to be held for write while
expanding a stack, per-VMA locks should follow the same rules and be
write-locked to prevent page faults into the VMA being expanded. Add
the necessary locking.

Cc: stable@vger.kernel.org
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>