[patch 2/3] audit: Do not send uninitialized data for AUDIT_TTY_GET

[Thomas Gleixner <tglx@linutronix.de>]

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audit_receive_msg() sends uninitialized data for AUDIT_TTY_GET when
the task was not found.

Send reply only when task was found.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Paris <eparis@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>

---
kernel/audit.c |    6 ++++--
 kernel/audit.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
Index: linux-2.6/kernel/audit.c
===================================================================
--- linux-2.6.orig/kernel/audit.c
+++ linux-2.6/kernel/audit.c
@@ -884,8 +884,10 @@ static int audit_receive_msg(struct sk_b
 			spin_unlock_irq(&tsk->sighand->siglock);
 		}
 		read_unlock(&tasklist_lock);
-		audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_TTY_GET, 0, 0,
-				 &s, sizeof(s));
+
+		if (!err)
+			audit_send_reply(NETLINK_CB(skb).pid, seq,
+					 AUDIT_TTY_GET, 0, 0, &s, sizeof(s));
 		break;
 	}
 	case AUDIT_TTY_SET: {