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 <greearb@candelatech.com> Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>

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 <greearb@candelatech.com> Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Joe Perches · David S. Miller
1 parent b3eec79b07
Showing 1 changed file with 3 additions and 1 deletions Side-by-side Diff
net/core/filter.c
@@ -350,7 +350,9 @@
 			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;
 		}
 	}
...	...	@@ -350,7 +350,9 @@
350	350	continue;
351	351	}
352	352	default:
353		- WARN_ON(1);
	353	+ WARN_RATELIMIT(1, "Unknown code:%u jt:%u tf:%u k:%u\n",
	354	+ fentry->code, fentry->jt,
	355	+ fentry->jf, fentry->k);
354	356	return 0;
355	357	}
356	358	}