Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <14dacce8ccf2f6b69fbeb49b92f864de9bdd216d.camel@sipsolutions.net>
Subject: Re: ax200 reliable crash in 100Mbps bi-directional traffic test.
From:   Johannes Berg <johannes@sipsolutions.net>
To:     Ben Greear <greearb@candelatech.com>,
        linux-wireless <linux-wireless@vger.kernel.org>
Cc:     amol.jawale@candelatech.com,
        Gregory Greenman <gregory.greenman@intel.com>
Date:   Tue, 11 Apr 2023 20:00:46 +0200
In-Reply-To: <0ec935a0-175c-38ae-cf3c-c001989a3334@candelatech.com>
References: <0ec935a0-175c-38ae-cf3c-c001989a3334@candelatech.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
User-Agent: Evolution 3.46.4 (3.46.4-1.fc37) 
MIME-Version: 1.0
Precedence: bulk

On Tue, 2023-04-11 at 10:09 -0700, Ben Greear wrote:
> Hello,
>=20
> Our test team reports that they get reliable firmware crashes on ax200 ra=
dios against multiple
> APs when running 100Mbps UL + DL traffic (100Mbps in both directions).
>=20
> This happens on 5.19-ish kernels as well as 6.2.9+.
> ax210 radios in same setup are much more stable.
>=20
> Please let us know if you would like additional debug information, includ=
ing binary
> crash dump files from the radio....
>=20
> [19241.588542] sta0001: Limiting TX power to 27 (30 - 3) dBm as advertise=
d by 28:80:88:f3:b2:00
> 4[19245.998099] iwlwifi 0000:12:00.0: Microcode SW error detected. Restar=
ting 0x0.
> 5[19246.004160] iwlwifi 0000:12:00.0: Start IWL Error Log Dump:
> 6[19246.008457] iwlwifi 0000:12:00.0: Transport status: 0x0000004B, valid=
: 6
> 7[19246.013867] iwlwifi 0000:12:00.0: Loaded firmware version: 72.daa0512=
5.0 cc-a0-72.ucode
> 8[19246.020573] iwlwifi 0000:12:00.0: 0x000022CE | ADVANCED_SYSASSERT
>=20

Pretty sure this means that the RX was faster than the CPU was
processing, but why would that happen at 100 Mbps?

johannes