netdev - Re: NETDEV WATCHDOG: s1p1 (bnxt_en): transmit queue 2 timed out

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Message-ID: <CACKFLikq=gyHAZP=A3+Ry36vw7Vk32COGJsyD=WmME7t01o0qg@mail.gmail.com>
Date:   Mon, 30 Nov 2020 09:54:19 -0800
From:   Michael Chan <michael.chan@...adcom.com>
To:     Marc Smith <msmith626@...il.com>
Cc:     Netdev <netdev@...r.kernel.org>
Subject: Re: NETDEV WATCHDOG: s1p1 (bnxt_en): transmit queue 2 timed out

On Mon, Nov 30, 2020 at 9:37 AM Marc Smith <msmith626@...il.com> wrote:
>
> On Sun, Nov 29, 2020 at 2:04 AM Michael Chan <michael.chan@...adcom.com> wrote:
> >
> > On Wed, Nov 25, 2020 at 11:39 AM Marc Smith <msmith626@...il.com> wrote:
> >
> > > [17879.279213] bnxt_en 0000:01:09.0 s1p1: TX timeout detected,
> > > starting reset task!
> > > [17883.075299] bnxt_en 0000:01:09.0 s1p1: Resp cmpl intr err msg: 0x51
> > > [17883.075302] bnxt_en 0000:01:09.0 s1p1: hwrm_ring_free type 1
> > > failed. rc:fffffff0 err:0
> > > [17886.957100] bnxt_en 0000:01:09.0 s1p1: Resp cmpl intr err msg: 0x51
> > > [17886.957103] bnxt_en 0000:01:09.0 s1p1: hwrm_ring_free type 2
> > > failed. rc:fffffff0 err:0
> > > [17890.843023] bnxt_en 0000:01:09.0 s1p1: Resp cmpl intr err msg: 0x51
> > > [17890.843025] bnxt_en 0000:01:09.0 s1p1: hwrm_ring_free type 2
> > > failed. rc:fffffff0 err:0
> >
> > These messages could be caused by IRQ issues or firmware issues.  It
> > seems that one IRQ vector that is shared by 1 TX ring (type 1) and 2
> > RX rings (type 2) is not getting the interrupt.  It caused the
> > original TX timeout and the interrupt issue persisted during the
> > recovery to free these rings.
> >
> > > firmware-version: 214.0.191.0
> >
> > This firmware is about 2 years old.  I'll have someone get back to you
> > on how to upgrade and what version to upgrade to.
>
> Thanks Michael. After more investigation, I'm not so sure this is a
> firmware issue; we see these corresponding events on the host
> (hypervisor):
> AMD-Vi: Event logged [IO_PAGE_FAULT device=c8:02.0 domain=0x0001
> address=0xfffffffdf8050000 flags=0x0008]
>

Ah, you are using AMD.  We've also run into some issues related to AMD
IOMMU.  I'll have someone get back to you with the specifics.

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