From: Sitsofe Wheeler <sitsofe@yahoo.com>
To: Bob Copeland <me@bobcopeland.com>
Cc: Jiri Slaby <jirislaby@gmail.com>,
Nick Kossifidis <mickflemm@gmail.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
ath5k-devel@venema.h4ckr.net,
"Luis R. Rodriguez" <lrodriguez@atheros.com>
Subject: Re: [TIP] BUG kmalloc-4096: Poison overwritten (ath5k_rx_skb_alloc)
Date: Fri, 6 Mar 2009 09:42:49 +0000 [thread overview]
Message-ID: <20090306094249.GA10236@silver.sucs.org> (raw)
In-Reply-To: <20090304120759.GA6519@hash.localnet>
On Wed, Mar 04, 2009 at 07:07:59AM -0500, Bob Copeland wrote:
> On Tue, Mar 03, 2009 at 08:03:52PM +0000, Sitsofe Wheeler wrote:
>
> None. Perhaps it's wishful thinking but a function trace for the few
> minutes prior to the poison would be useful. A good replicator might
> be to run a sequence of automatic suspend/resume with pm_test, in
> parallel with iwlist wlan0 scan (as root, so scans are actually
> performed), in parallel with iperf or ping. I didn't personally have
> luck with that workload, though.
Forcing the scans and pings didn't seem to make the issue occur.
Unfortunately I can't quite provide you what you were asking for... I
started the function_tracer feature in /sys/kernel/debug/tracing and put
the buffer size to 153600kb (previously I had set it higher and
successfully OOMd my box : ). Unfortunately I had no filter so this was
not enough for all that long of a log (maybe about 6 seconds). I had a
small script that did the following:
watch -n1 'if `tail -1000 /var/log/kern.log | grep -q Poison`; then echo
0 > /sys/kernel/debug/tracing/tracing_on; cat
/sys/kernel/debug/tracing/trace | gzip > /tmp/trace.txt.gz ; fi'
(the script is obviously flawed but it did the job)
I've put up results on http://sucs.org/~sits/test/eeepc-debug/20090306/
and I think the type that kmalloc notices is 4154504125.579778 . There
is also a pre grepped log of (ieee|ath5k) in that directory.
I'll try and act on your filtering suggestions next time but I didn't
have too much time to get this going...
--
Sitsofe | http://sucs.org/~sits/
next prev parent reply other threads:[~2009-03-06 9:43 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-22 11:18 [TIP] BUG kmalloc-4096: Poison overwritten (ath5k_rx_skb_alloc) Sitsofe Wheeler
2009-02-22 12:01 ` Jiri Slaby
2009-02-22 12:20 ` Sitsofe Wheeler
2009-02-22 12:47 ` Jiri Slaby
2009-02-22 14:47 ` Frederic Weisbecker
2009-02-22 17:02 ` Sitsofe Wheeler
2009-02-22 17:10 ` Frederic Weisbecker
2009-02-22 19:27 ` Jiri Slaby
2009-02-22 19:42 ` Frederic Weisbecker
2009-02-22 20:18 ` Sitsofe Wheeler
2009-02-22 20:27 ` Jiri Slaby
2009-02-22 20:30 ` Frederic Weisbecker
2009-02-22 21:56 ` Jiri Slaby
2009-02-22 22:21 ` Sitsofe Wheeler
2009-02-22 23:20 ` Jiri Slaby
2009-02-23 15:35 ` Bob Copeland
2009-02-23 16:03 ` Nick Kossifidis
2009-02-23 16:15 ` Nick Kossifidis
2009-02-23 16:21 ` Bob Copeland
2009-02-23 16:27 ` Nick Kossifidis
2009-02-23 16:30 ` Bob Copeland
2009-02-23 16:41 ` Nick Kossifidis
2009-02-23 16:44 ` Bob Copeland
2009-02-23 16:16 ` pat-lkml
2009-02-23 16:20 ` Nick Kossifidis
2009-02-23 22:22 ` Jiri Slaby
2009-02-23 22:43 ` Jiri Slaby
2009-02-23 23:08 ` Nick Kossifidis
2009-02-24 13:58 ` Bob Copeland
2009-02-24 21:47 ` Jiri Slaby
2009-02-25 14:01 ` Sitsofe Wheeler
2009-02-26 1:06 ` Bob Copeland
2009-02-26 20:53 ` Jiri Slaby
2009-02-26 21:05 ` Bob Copeland
2009-02-26 13:59 ` Bob Copeland
2009-02-26 17:03 ` Sitsofe Wheeler
2009-03-02 17:34 ` [ath5k-devel] " Bob Copeland
2009-03-03 4:12 ` Bob Copeland
2009-03-03 20:03 ` Sitsofe Wheeler
2009-03-04 12:07 ` Bob Copeland
2009-03-06 9:42 ` Sitsofe Wheeler [this message]
2009-03-07 4:47 ` Bob Copeland
2009-03-07 8:04 ` Sitsofe Wheeler
2009-03-07 13:34 ` Bob Copeland
2009-03-08 3:09 ` Bob Copeland
2009-03-08 9:28 ` Jiri Slaby
2009-03-08 16:10 ` Bob Copeland
2009-03-10 0:43 ` Bob Copeland
2009-03-10 8:19 ` Sitsofe Wheeler
2009-03-12 6:10 ` Sitsofe Wheeler
2009-03-13 9:52 ` Sitsofe Wheeler
2009-03-13 12:28 ` Bob Copeland
2009-03-20 13:14 ` Bob Copeland
2009-03-29 14:24 ` Sitsofe Wheeler
2009-03-29 15:14 ` Bob Copeland
2009-03-31 8:30 ` Sitsofe Wheeler
2009-05-13 21:44 ` Sitsofe Wheeler
2009-05-15 4:09 ` Bob Copeland
2009-05-18 10:05 ` Sitsofe Wheeler
2009-05-22 9:39 ` Sitsofe Wheeler
2009-05-22 12:06 ` Bob Copeland
2009-05-26 21:10 ` Sitsofe Wheeler
2009-06-28 20:23 ` Sitsofe Wheeler
2009-07-14 2:24 ` Bob Copeland
2009-02-26 1:11 ` Bob Copeland
2009-02-22 20:17 ` Bob Copeland
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