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Commit cbe97414 authored by Jonathan Gonzalez V's avatar Jonathan Gonzalez V Committed by Linus Torvalds
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drm/exynos: 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 (exclusively)
in order to avoid races while iterating through the vmacache and/or
rbtree.

Signed-off-by: default avatarJonathan Gonzalez V <zeus@gnu.org>
Signed-off-by: default avatarDavidlohr Bueso <davidlohr@hp.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5040573e
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