From: Bob Copeland <me@bobcopeland.com>
To: Sitsofe Wheeler <sitsofe@yahoo.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: Mon, 13 Jul 2009 22:24:58 -0400 [thread overview]
Message-ID: <20090714022458.GB28490@hash.localnet> (raw)
In-Reply-To: <20090628202329.GB1546@sucs.org>
On Sun, Jun 28, 2009 at 09:23:29PM +0100, Sitsofe Wheeler wrote:
> OK I'm still trying to follow this. I forwarded your patch to 2.6.31-rc1
> but this time I have kmemleak enabled. I left it streaming radio for the
> past few hours and the following appeared in the logs:
>
> Jun 28 17:01:34 eeepc kernel: [ 744.083787] kmemleak: unreferenced object 0xf5845770 (size 64):
> Jun 28 17:01:34 eeepc kernel: [ 744.083795] kmemleak: comm "swapper", pid 1, jiffies 4294673468
> Jun 28 17:01:34 eeepc kernel: [ 744.083799] kmemleak: backtrace:
> Jun 28 17:01:34 eeepc kernel: [ 744.083811] kmemleak: [<c01a749d>] kmemleak_alloc+0x11d/0x2a0
> Jun 28 17:01:34 eeepc kernel: [ 744.083818] kmemleak: [<c01a4376>] __kmalloc+0x136/0x210
> Jun 28 17:01:34 eeepc kernel: [ 744.083828] kmemleak: [<c043f923>] ieee80211_register_hw+0x83/0x4b0
[snip]
> There were quite a few leaks before this. I dunno if kmemleak is
> spurious or not. As always, any ideas?
I can't seem to boot a kmemleak kernel myself. But there were a number
of fixes to kmemleak recently to track memory allocated in
ieee80211_register_hw, IIRC -- so it would be good to know if this
persists with all the latest fixes.
As always, no ideas :( I'm guessing nothing in .31-rc has magically
fixed any problems? I still say it's some kind of race condition
made worse by the eeepc performance, but unless I can find one or
replicate it with introduced load, I'm afraid I'm stumped.
(Well, I guess we can always go off and rewrite the rx loop without
the circular terminator and see how well that works on your HW.)
--
Bob Copeland %% www.bobcopeland.com
next prev parent reply other threads:[~2009-07-14 2:25 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
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 [this message]
2009-02-26 1:11 ` Bob Copeland
2009-02-22 20:17 ` Bob Copeland
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