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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-09-03 22:38:59 +0300 |
|---|---|---|
| committer | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-09-03 22:38:59 +0300 |
| commit | d76b1590e06a63a3d8697168cd0aabf1c4b3cb3a (patch) | |
| tree | 276a0323e0b25192fdb837475b816db3b3052cad /mm/page_io.c | |
| parent | 326ba5010a5429a5a528b268b36a5900d4ab0eba (diff) | |
slub: Fix kmem_cache_destroy() with SLAB_DESTROY_BY_RCU
kmem_cache_destroy() should call rcu_barrier() *after* kmem_cache_close() and
*before* sysfs_slab_remove() or risk rcu_free_slab() being called after
kmem_cache is deleted (kfreed).
rmmod nf_conntrack can crash the machine because it has to kmem_cache_destroy()
a SLAB_DESTROY_BY_RCU enabled cache.
Cc: <stable@kernel.org>
Reported-by: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'mm/page_io.c')
0 files changed, 0 insertions, 0 deletions