This is a note to let you know that I've just added the patch titled
netlink: rate-limit leftover bytes warning and print process name
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
netlink-rate-limit-leftover-bytes-warning-and-print-process-name.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Jun 18 20:03:44 PDT 2014
From: Michal Schmidt <mschmidt@xxxxxxxxxx>
Date: Mon, 2 Jun 2014 18:25:02 +0200
Subject: netlink: rate-limit leftover bytes warning and print process name
From: Michal Schmidt <mschmidt@xxxxxxxxxx>
[ Upstream commit bfc5184b69cf9eeb286137640351c650c27f118a ]
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.
[v2: Use pr_warn_ratelimited instead of printk_ratelimited.]
Signed-off-by: Michal Schmidt <mschmidt@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
lib/nlattr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -197,8 +197,8 @@ int nla_parse(struct nlattr **tb, int ma
}
if (unlikely(rem > 0))
- printk(KERN_WARNING "netlink: %d bytes leftover after parsing "
- "attributes.\n", rem);
+ pr_warn_ratelimited("netlink: %d bytes leftover after parsing attributes in process `%s'.\n",
+ rem, current->comm);
err = 0;
errout:
Patches currently in stable-queue which might be from mschmidt@xxxxxxxxxx are
queue-3.4/netlink-rate-limit-leftover-bytes-warning-and-print-process-name.patch
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