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authorMarek Lindner <lindner_marek@yahoo.de>2011-02-10 14:33:53 +0000
committerMarek Lindner <lindner_marek@yahoo.de>2011-03-05 12:50:03 +0100
commit44524fcdf6ca19b58c24f7622c4af1d8d8fe59f8 (patch)
tree297c76f80d68d56e3c65a23c70de645a1c93df47 /fs/jffs2/write.c
parenta4c135c561106c397bae33455acfca4aa8065a30 (diff)
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batman-adv: Correct rcu refcounting for neigh_node
It might be possible that 2 threads access the same data in the same rcu grace period. The first thread calls call_rcu() to decrement the refcount and free the data while the second thread increases the refcount to use the data. To avoid this race condition all refcount operations have to be atomic. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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