Commit 714ffe26 authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso Committed by Kamal Mostafa

netfilter: nf_log: wait for rcu grace after logger unregistration

commit ad5001cc upstream.

The nf_log_unregister() function needs to call synchronize_rcu() to make sure
that the objects are not dereferenced anymore on module removal.

Fixes: 5962815a ("netfilter: nf_log: use an array of loggers instead of list")
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: default avatarKamal Mostafa <kamal@canonical.com>
parent 2d83e522
......@@ -113,6 +113,7 @@ void nf_log_unregister(struct nf_logger *logger)
for (i = 0; i < NFPROTO_NUMPROTO; i++)
RCU_INIT_POINTER(loggers[i][logger->type], NULL);
mutex_unlock(&nf_log_mutex);
synchronize_rcu();
}
EXPORT_SYMBOL(nf_log_unregister);
......
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