From: Amy Griffis <amy.griffis@hp.com>
Date: Thu, 7 Sep 2006 21:03:02 +0000 (-0400)
Subject: [PATCH] sanity check audit_buffer
X-Git-Tag: v2.6.18-rc7~7^2~4
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ef2d3040e5cf38f7d64a408038f576b4a5ec987;p=linux-2.6

[PATCH] sanity check audit_buffer

Add sanity checks for NULL audit_buffer consistent with other
audit_log* routines.

Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/kernel/audit.c b/kernel/audit.c
index 0a36091ed7..963fd15c96 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1028,6 +1028,9 @@ void audit_log_hex(struct audit_buffer *ab, const unsigned char *buf,
 	struct sk_buff *skb;
 	static const unsigned char *hex = "0123456789ABCDEF";
 
+	if (!ab)
+		return;
+
 	BUG_ON(!ab->skb);
 	skb = ab->skb;
 	avail = skb_tailroom(skb);
@@ -1060,6 +1063,9 @@ static void audit_log_n_string(struct audit_buffer *ab, size_t slen,
 	unsigned char *ptr;
 	struct sk_buff *skb;
 
+	if (!ab)
+		return;
+
 	BUG_ON(!ab->skb);
 	skb = ab->skb;
 	avail = skb_tailroom(skb);