| commit | e8f23f08a0dbfbaf5e95fa77a12c8cb2b1bd97e7 | |
| author | Eric Dumazet <eric.dumazet@gmail.com> | |
| Thu, 3 Sep 2009 19:38:59 +0000 (3 22:38 +0300) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Tue, 15 Sep 2009 17:45:24 +0000 (15 10:45 -0700) | ||
| tree | 7c0d382c59fd283d35e4fefc75a00be2a6b28f55 | treesnapshot (tar.gz zip) |
| parent | 6c135b4e133017a8aeef1534107ee4b1f11d3265 | commitdiff |
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>
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>
| mm/slub.c | diffblobblamehistory |