path: root/ipc/util.h
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authorDavidlohr Bueso <davidlohr.bueso@hp.com>2013-09-11 14:26:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-11 15:59:44 -0700
commit530fcd16d87cd2417c472a581ba5a1e501556c86 (patch)
treec741f07d57e5b6fdf5920c6ba87e59b779073aaf /ipc/util.h
parent05603c44a7627793219b0bd9a7b236099dc9cd9d (diff)
ipc, shm: guard against non-existant vma in shmdt(2)
When !CONFIG_MMU there's a chance we can derefence a NULL pointer when the VM area isn't found - check the return value of find_vma(). Also, remove the redundant -EINVAL return: retval is set to the proper return code and *only* changed to 0, when we actually unmap the segments. Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Rik van Riel <riel@redhat.com> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/util.h')
0 files changed, 0 insertions, 0 deletions

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