diff options
| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2013-03-18 07:52:06 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-19 09:44:34 -0400 |
| commit | c9bbb75f1dffef0e6ac47abf32cdb668d5e1a867 (patch) | |
| tree | af45c06addaf6b16f748cdcc6b095f52b23cce73 /net/can | |
| parent | 1bc277f79260ae6f0888b1234942b6aedfff1289 (diff) | |
| download | lwn-c9bbb75f1dffef0e6ac47abf32cdb668d5e1a867.tar.gz lwn-c9bbb75f1dffef0e6ac47abf32cdb668d5e1a867.zip | |
can: dump stack on protocol bugs
The rework of the kernel hlist implementation "hlist: drop the node parameter
from iterators" (b67bfe0d42cac56c512dd5da4b1b347a23f4b70a) created some
fallout in the form of non matching comments and obsolete code.
Additionally to the cleanup this patch adds a WARN() statement to catch the
caller of the wrong filter removal request.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can')
| -rw-r--r-- | net/can/af_can.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c index 8bacf281b3ee..c4e50852c9f4 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -546,16 +546,13 @@ void can_rx_unregister(struct net_device *dev, canid_t can_id, canid_t mask, } /* - * Check for bugs in CAN protocol implementations: - * If no matching list item was found, the list cursor variable next - * will be NULL, while r will point to the last item of the list. + * Check for bugs in CAN protocol implementations using af_can.c: + * 'r' will be NULL if no matching list item was found for removal. */ if (!r) { - pr_err("BUG: receive list entry not found for " - "dev %s, id %03X, mask %03X\n", - DNAME(dev), can_id, mask); - r = NULL; + WARN(1, "BUG: receive list entry not found for dev %s, " + "id %03X, mask %03X\n", DNAME(dev), can_id, mask); goto out; } |