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| author | Davidlohr Bueso <davidlohr.bueso@hp.com> | 2013-09-11 14:26:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:59:44 -0700 |
| commit | 530fcd16d87cd2417c472a581ba5a1e501556c86 (patch) | |
| tree | c741f07d57e5b6fdf5920c6ba87e59b779073aaf /ipc/util.c | |
| parent | 05603c44a7627793219b0bd9a7b236099dc9cd9d (diff) | |
| download | lwn-530fcd16d87cd2417c472a581ba5a1e501556c86.tar.gz lwn-530fcd16d87cd2417c472a581ba5a1e501556c86.zip | |
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.c')
0 files changed, 0 insertions, 0 deletions