Any process is able to send netlink messages with leftover bytes. Make the warning rate-limited to prevent too much log spam. The warning is supposed to help find userspace bugs, so print the triggering command name to implicate the buggy program. Signed-off-by: Michal Schmidt <mschmidt@xxxxxxxxxx> --- lib/nlattr.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/lib/nlattr.c b/lib/nlattr.c index fc67547..31047c4 100644 --- a/lib/nlattr.c +++ b/lib/nlattr.c @@ -201,8 +201,9 @@ int nla_parse(struct nlattr **tb, int maxtype, const struct nlattr *head, } if (unlikely(rem > 0)) - printk(KERN_WARNING "netlink: %d bytes leftover after parsing " - "attributes.\n", rem); + printk_ratelimited(KERN_WARNING + "netlink: %d bytes leftover after parsing attributes in process `%s'.\n", + rem, current->comm); err = 0; errout: -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html