Messages in this thread | | | Date | Thu, 3 Sep 2009 22:48:10 +0300 | Subject | Re: [PATCH] slub: Fix kmem_cache_destroy() with SLAB_DESTROY_BY_RCU | From | Pekka Enberg <> |
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On Thu, Sep 3, 2009 at 5:18 PM, Eric Dumazet<eric.dumazet@gmail.com> wrote: > Here is the second patch (RCU thing). Stable candidate > > [PATCH] 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.
Do we have a bugzilla URL for this?
> 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>
OK, this is in for-next now and queued for 2.6.31. If you guys want to fix this in a different way, lets do that in 2.6.32.
Pekka
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