From 8dafc9930cc2d2cb895cbec6ab83d0bfeb46fac6 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Thu, 17 Sep 2015 13:37:00 +0200 Subject: [PATCH] netfilter: nf_log: wait for rcu grace after logger unregistration [ Upstream commit ad5001cc7cdf9aaee5eb213fdee657e4a3c94776 ] The nf_log_unregister() function needs to call synchronize_rcu() to make sure that the objects are not dereferenced anymore on module removal. Fixes: 5962815a6a56 ("netfilter: nf_log: use an array of loggers instead of list") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nf_log.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c index d7197649dba6..b7d491ec5317 100644 --- a/net/netfilter/nf_log.c +++ b/net/netfilter/nf_log.c @@ -103,6 +103,7 @@ 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);