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From:   =?ISO-8859-1?Q?J=E9r=F4me?= Pouiller <jerome.pouiller@silabs.com>
To:     linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
        =?utf-8?B?UGF3ZcWC?= Lenkow <pawel.lenkow@camlingroup.com>,
        Lech Perczak <lech.perczak@camlingroup.com>
Cc:     Kalle Valo <kvalo@kernel.org>,
        Krzysztof =?utf-8?B?RHJvYmnFhHNraQ==?= 
        <krzysztof.drobinski@camlingroup.com>,
        Kirill Yatsenko <kirill.yatsenko@camlingroup.com>
Subject: Re: wfx: Memory corruption during high traffic with WFM200 on i.MX6Q platform
Date:   Mon, 12 Sep 2022 18:15:53 +0200
Message-ID: <3193501.44csPzL39Z@pc-42>
Organization: Silicon Labs
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On Monday 12 September 2022 17:16:24 CEST Lech Perczak wrote:
>=20
> Hello,
>=20
> We're trying to get a WFM200S022XNN3 module working on a custom i.MX6Q bo=
ard using SDIO interface, using upstream kernel. Our patches concern primar=
ily the device tree for the board - and upstream firmware from linux-firmwa=
re repository.
>=20
> During that, we stumbled upon a memory corruption issue, which appears wh=
en big traffic is passing through the device. Our adapter is running in AP =
mode. This can be reproduced with 100% rate using iperf3, by starting an AP=
 interface on the device, and an iperf3 server. Then, the client station ru=
ns iperf3 with "iperf3 -c <hostname> -t 3600" command - so the AP is sendin=
g data for up to one hour, however - the kernel on our device crashes after=
 around a few minutes of traffic, sometimes less than a minute.
>=20
> The behaviour is the same on kernel v5.19.7, v5.19.2, and even with v6.0-=
rc5. Tests on v6.0-rc5 have shown most detailed stacktrace so far:
>=20

Hello Lech,

It seems that something somewhere (Ms Exchange, I am looking at you) has
removed all the newlines of your mail :-/. Can you try to fix the problem?
I think that sending mails using base64 encoding would solve the issue.


[...]

--=20
J=E9r=F4me Pouiller