net: filter: Use WARN_RATELIMIT

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 <[email protected]> Signed-off-by: Joe Perches <[email protected]> Signed-off-by: David S. Miller <[email protected]>
RyanHsu · May 23, 2011 · 6c4a5cb · 6c4a5cb
1 parent b3eec79
commit 6c4a5cb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/net/core/filter.c b/net/core/filter.c
@@ -350,7 +350,9 @@ unsigned int sk_run_filter(const struct sk_buff *skb,
 			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;
 		}
 	}