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| author | Kees Cook <keescook@chromium.org> | 2017-07-12 14:35:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-12 16:26:01 -0700 |
| commit | 101ede01dfd5072651965e974bc6e30c8d0748e2 (patch) | |
| tree | de85b9884a50812354b9f9ccdc3193a30239fa4d /ipc/shm.c | |
| parent | 5ccc8fb54f1c083f1dc7e073150ec18d43457872 (diff) | |
| download | op-kernel-dev-101ede01dfd5072651965e974bc6e30c8d0748e2.zip op-kernel-dev-101ede01dfd5072651965e974bc6e30c8d0748e2.tar.gz | |
ipc/sem: avoid ipc_rcu_alloc()
Instead of using ipc_rcu_alloc() which only performs the refcount bump,
open code it to perform better sem-specific checks. This also allows
for sem_array structure layout to be randomized in the future.
[manfred@colorfullife.com: Rediff, because the memset was temporarily inside ipc_rcu_alloc()]
Link: http://lkml.kernel.org/r/20170525185107.12869-10-manfred@colorfullife.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/shm.c')
0 files changed, 0 insertions, 0 deletions
