netlink kernel socket is protected by refcount, not RCU. Its rcv path is neither protected by RCU. So the synchronize_net() is just pointless.

Cc: Richard Guy Briggs <rgb(a)redhat.com&gt; Signed-off-by: Cong Wang <xiyou.wangcong(a)gmail.com&gt; --- kernel/audit.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/audit.c b/kernel/audit.c index 92c463d..67b9fbd8 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -1172,9 +1172,8 @@ static void __net_exit audit_net_exit(struct net *net) audit_sock = NULL; } - RCU_INIT_POINTER(aunet->nlsk, NULL); - synchronize_net(); netlink_kernel_release(sock); + aunet->nlsk = NULL; } static struct pernet_operations audit_net_ops __net_initdata = { -- 2.1.0