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    SubjectRe: [PATCH] slub: Fix kmem_cache_destroy() with SLAB_DESTROY_BY_RCU
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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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