4.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
commit ad5001cc7cdf9aaee5eb213fdee657e4a3c94776 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: 5962815a6a56 ("netfilter: nf_log: use an array of loggers instead of list")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/netfilter/nf_log.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -113,6 +113,7 @@ void nf_log_unregister(struct nf_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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