tree c8ee9b63e1e8d3925b8a08a2b21a331434d183b5
parent 28d0325ce6e0a52f53d8af687e6427fee59004d3
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1245958297 -0700
committer Pekka Enberg <penberg@cs.helsinki.fi> 1246007447 +0300

fix RCU-callback-after-kmem_cache_destroy problem in sl[aou]b

Jesper noted that kmem_cache_destroy() invokes synchronize_rcu() rather than
rcu_barrier() in the SLAB_DESTROY_BY_RCU case, which could result in RCU
callbacks accessing a kmem_cache after it had been destroyed.

Cc: <stable@kernel.org>
Acked-by: Matt Mackall <mpm@selenic.com>
Reported-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>