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| author | Davidlohr Bueso <davidlohr@hp.com> | 2014-06-04 16:07:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 16:54:00 -0700 |
| commit | 5040573e49cc8f0e016a83544a0e552f2f44c897 (patch) | |
| tree | 5c7db141f650f8d427d9e8984d2b4ead9e266635 /drivers | |
| parent | 2ee06468702e0742114823a537510cd6f038cacc (diff) | |
| download | linux-5040573e49cc8f0e016a83544a0e552f2f44c897.tar.gz linux-5040573e49cc8f0e016a83544a0e552f2f44c897.tar.bz2 linux-5040573e49cc8f0e016a83544a0e552f2f44c897.zip | |
arc: call find_vma with the mmap_sem held
Performing vma lookups without taking the mm->mmap_sem is asking for
trouble. While doing the search, the vma in question can be modified or
even removed before returning to the caller. Take the lock (shared) in
order to avoid races while iterating through the vmacache and/or rbtree.
[akpm@linux-foundation.org: CSE current->active_mm, per Vineet]
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions