linux-kernel - Re: kernel 5.15 does not boot with 3ware card (never had this issue <= 5.14) - scsi 0:0:0:0: WARNING: (0x06:0x002C) : Command (0x12) timed out, resetting card

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Message-ID: <CAO9zADzWcpwZkfJ5VZGZZJT39KQEUr9yGqqCnP18mk7ZAZxbBw@mail.gmail.com>
Date:   Sun, 7 Nov 2021 08:46:56 -0500
From:   Justin Piszcz <jpiszcz@...idpixels.com>
To:     Bart Van Assche <bvanassche@....org>,
        Douglas Miller <dougmill@...ux.vnet.ibm.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org
Subject: Re: kernel 5.15 does not boot with 3ware card (never had this issue
 <= 5.14) - scsi 0:0:0:0: WARNING: (0x06:0x002C) : Command (0x12) timed out,
 resetting card

On Sat, Nov 6, 2021 at 7:54 AM Justin Piszcz <jpiszcz@...idpixels.com> wrote:
>
>
>
> -----Original Message-----
> From: Bart Van Assche <bvanassche@....org>
> Sent: Wednesday, November 3, 2021 12:23 PM
> To: Justin Piszcz <jpiszcz@...idpixels.com>; Douglas Miller <dougmill@...ux.vnet.ibm.com>
> Cc: LKML <linux-kernel@...r.kernel.org>; linux-scsi@...r.kernel.org
> Subject: Re: kernel 5.15 does not boot with 3ware card (never had this issue <= 5.14) - scsi 0:0:0:0: WARNING: (0x06:0x002C) : Command (0x12) timed out, resetting card
>
> On 11/3/21 9:18 AM, Justin Piszcz wrote:
> > Thanks!-- Has anyone else reading run into this issue and/or are there
> > any suggestions how I can troubleshoot this further (as all -rc's have
> > the same issue)?
>
> How about bisecting this issue
> (https://www.kernel.org/doc/html/latest/admin-guide/bug-bisect.html)?
>
> [ .. ]
>
> I was having some issues finding a list of changes with git bisect, so I started checking the kernel .config and boot parameters:
>
> I found the option that was causing the system not to boot (tested with 5.15.0 and latest linux-git as of 6 NOV 2021)
> append="3w-sas.use_msi=1"
>
> 3w-sas.use_msi defaults to 0 (so now it is using IR-IO-APIC instead of MSI but now the machine boots using 5.15)
> https://lwn.net/Articles/358679/
>
> Something between 5.14 and 5.15 changed regarding x86_64's handling of Message Signaled Interrupts.
> ... which causes the kernel to no longer boot when 3w-sas.use_msi=1 is specified starting with 5.15.

This only partially fixes the issues, trying to reboot also results in
a hard lockup on cpu 1 (this is semi-reproducible)
https://installkernel.tripod.com/5.15-reboot-lockup.jpg

Back to 5.14.x for now...



Justin.