From: "Tomáš Janoušek" <tomi@nomi.cz>
To: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: wwguy <wey-yi.w.guy@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Re: iwlagn: memory corruption with WPA enterprise
Date: Mon, 13 Feb 2012 14:29:37 +0100 [thread overview]
Message-ID: <20120213132937.GA17203@nomi.cz> (raw)
In-Reply-To: <20120213130903.GA7355@redhat.com>
Hi,
On Mon, Feb 13, 2012 at 02:09:04PM +0100, Stanislaw Gruszka wrote:
> I also found this bug report
> https://bugzilla.kernel.org/show_bug.cgi?id=37742
> where one user report iwlwifi corruption catched by IOMMU.
I wasn't able to catch anything using IOMMU, and I also wasn't able to
reproduce the issue using any userspace memory checking tool. Hence I tend to
believe we're not dealing with a memory corruption at all, perhaps something
like certain CPU flags/registers not being correctly saved/restored during
wlan interrupts or something. When I have a sufficient amount of free time,
I'll try to check this hypothesis and perhaps pinpoint the instruction the
result of which is corrupted during wlan operation.
> Tomáš, I do not remember, do you have the same problems on
> older kernels i.e < 3.0
Yeah. I was able to reproduce it with 2.6.38.8 and 2.6.39.4 at least.
Regards,
--
Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/
next prev parent reply other threads:[~2012-02-13 13:29 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-29 17:15 iwlagn: memory corruption with WPA enterprise Tomáš Janoušek
2011-10-31 16:03 ` Stanislaw Gruszka
2011-11-09 15:54 ` Tomáš Janoušek
2011-11-09 15:59 ` wwguy
2011-11-09 16:51 ` Stanislaw Gruszka
2011-11-10 9:18 ` Tomáš Janoušek
2011-11-10 11:47 ` Stanislaw Gruszka
2011-11-10 12:53 ` Tomáš Janoušek
2011-11-10 16:07 ` Stanislaw Gruszka
2011-11-10 15:24 ` Guy, Wey-Yi
2011-11-10 16:42 ` Tomáš Janoušek
2011-11-10 17:02 ` Larry Finger
2011-11-10 16:30 ` Tomáš Janoušek
2011-11-11 5:47 ` Stanislaw Gruszka
2011-11-11 15:01 ` Tomáš Janoušek
2011-11-14 14:07 ` Stanislaw Gruszka
2011-11-19 18:11 ` Tomáš Janoušek
2011-11-20 2:13 ` wwguy
2011-11-20 3:20 ` Tomáš Janoušek
2011-11-20 4:28 ` wwguy
2011-11-20 20:40 ` Tomáš Janoušek
2012-02-10 18:09 ` Tomáš Janoušek
2012-02-13 9:25 ` Stanislaw Gruszka
2012-02-13 13:09 ` Stanislaw Gruszka
2012-02-13 13:29 ` Tomáš Janoušek [this message]
2012-02-14 9:20 ` Stanislaw Gruszka
2012-03-05 14:01 ` Tomáš Janoušek
2012-03-05 14:57 ` Stanislaw Gruszka
2012-03-05 15:00 ` Tomáš Janoušek
2012-03-05 15:11 ` Stanislaw Gruszka
2012-03-05 15:18 ` Tomáš Janoušek
2011-11-21 13:05 ` Stanislaw Gruszka
2011-11-21 13:09 ` Tomáš Janoušek
2011-11-21 13:40 ` Stanislaw Gruszka
2011-11-21 14:32 ` Tomáš Janoušek
2011-11-10 19:31 ` Adrian Chadd
2011-11-11 5:44 ` Stanislaw Gruszka
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