提交 04ee1a3b 编写于 作者: R Richard Guy Briggs 提交者: Eric Paris

audit: get rid of *NO* daemon at audit_pid=0 message

kauditd_send_skb is called after audit_pid was checked to be non-zero.

However, it can be set to 0 due to auditd exiting while kauditd_send_skb
is still executed and this can result in a spurious warning about missing
auditd.

Re-check audit_pid before printing the message.
Signed-off-by: NMateusz Guzik <mguzik@redhat.com>
Cc: Eric Paris <eparis@redhat.com>
Cc: linux-kernel@vger.kernel.org
Acked-by: NEric Paris <eparis@redhat.com>
Signed-off-by: NRichard Guy Briggs <rgb@redhat.com>
Signed-off-by: NEric Paris <eparis@redhat.com>
上级 61c0ee87
......@@ -410,10 +410,12 @@ static void kauditd_send_skb(struct sk_buff *skb)
err = netlink_unicast(audit_sock, skb, audit_nlk_portid, 0);
if (err < 0) {
BUG_ON(err != -ECONNREFUSED); /* Shouldn't happen */
printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
audit_log_lost("auditd disappeared\n");
audit_pid = 0;
audit_sock = NULL;
if (audit_pid) {
printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
audit_log_lost("auditd disappeared\n");
audit_pid = 0;
audit_sock = NULL;
}
/* we might get lucky and get this in the next auditd */
audit_hold_skb(skb);
} else
......
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