From: Joe Perches <joe@perches.com>
Date: Sat, 21 May 2011 07:48:40 +0000 (+0000)
Subject: net: filter: Use WARN_RATELIMIT
X-Git-Tag: v2.6.32.43~6
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5eabe872301b2754122ce37fc4d1adfafbc94182;p=thirdparty%2Fkernel%2Fstable.git

net: filter: Use WARN_RATELIMIT

[ Upstream commit 6c4a5cb219520c7bc937ee186ca53f03733bd09f ]

A mis-configured filter can spam the logs with lots of stack traces.

Rate-limit the warnings and add printout of the bogus filter information.

Original-patch-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/net/core/filter.c b/net/core/filter.c
index 01273978fe2ec..d162169b88fd0 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -291,7 +291,9 @@ load_b:
 			mem[f_k] = X;
 			continue;
 		default:
-			WARN_ON(1);
+			WARN_RATELIMIT(1, "Unknown code:%u jt:%u tf:%u k:%u\n",
+				       fentry->code, fentry->jt,
+				       fentry->jf, fentry->k);
 			return 0;
 		}