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| author | Davidlohr Bueso <davidlohr.bueso@hp.com> | 2013-09-11 14:26:28 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-18 07:45:48 -0700 |
| commit | 48ec782ce3e59d6ab14a8c1197c19826e61ac8e5 (patch) | |
| tree | 71c9dea53e09b8bd118967cb9a2843a53e067ea2 /ipc/namespace.c | |
| parent | a5daa172ff0897c52eb4c6da18b092c757264b2f (diff) | |
ipc, shm: guard against non-existant vma in shmdt(2)
commit 530fcd16d87cd2417c472a581ba5a1e501556c86 upstream.
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>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'ipc/namespace.c')
0 files changed, 0 insertions, 0 deletions