Re: iwlagn: memory corruption with WPA enterprise

[TomÃÅ JanouÅek]

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.

> TomÃÅ, 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,
-- 
TomÃÅ JanouÅek, a.k.a. Liskni_si, http://work.lisk.in/
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