linux-kernel - Re: PROBLEM: sparc64 random crashes starting w/ Linux 6.1 (regression)

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Date:   Mon, 30 Jan 2023 20:46:29 -0500
From:   Nick Bowler <nbowler@...conx.ca>
To:     Peter Xu <peterx@...hat.com>
Cc:     linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
        regressions@...ts.linux.dev,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: PROBLEM: sparc64 random crashes starting w/ Linux 6.1 (regression)

On 2023-01-29, Peter Xu <peterx@...hat.com> wrote:
> On Sat, Jan 28, 2023 at 09:17:31PM -0500, Nick Bowler wrote:
>> Starting with Linux 6.1.y, my sparc64 (Sun Ultra 60) system is very
>> unstable, with userspace processes randomly crashing with all kinds of
>> different weird errors.  The same problem occurs on 6.2-rc5.  Linux
>> 6.0.y is OK.
[...]
> Could you try below patch to see whether it fixes your problem?  It should
> cover the last piece of possible issue with dirty bit on sparc after that
> patchset.  It's based on latest master branch (commit ab072681eabe1ce0).

Haven't seen any failures yet, so it seems this patch on top of 6.2-rc6
makes things much better.

I'll keep running this for a while to see if any other problems come up.

Thanks,
  Nick