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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-09-03 22:38:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-15 10:37:24 -0700 |
| commit | 82b257c06a952cbda39a26012fd7e7978ac0b423 (patch) | |
| tree | 9225676bcf3eaa6d7a15ce70fc312bcfae576b8f /drivers/char | |
| parent | 9579d79f10d42ce275c94b945a3df2f5173d8041 (diff) | |
slub: Fix kmem_cache_destroy() with SLAB_DESTROY_BY_RCU
commit d76b1590e06a63a3d8697168cd0aabf1c4b3cb3a upstream.
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.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/char')
0 files changed, 0 insertions, 0 deletions