linux-kernel - Re: [regression] oops on heavy compilations ("kernel BUG at mm/zswap.c:1005!" and "Oops: invalid opcode: 0000")

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Message-ID: <CAJD7tkbO8J+2KfRnCPPoxmPzDHnpnbWfjHx9YJe_PtJ9S_yLPw@mail.gmail.com>
Date: Tue, 3 Sep 2024 10:52:29 -0700
From: Yosry Ahmed <yosryahmed@...gle.com>
To: "Aithal, Srikanth" <sraithal@....com>
Cc: Piotr Oniszczuk <piotr.oniszczuk@...il.com>, Nhat Pham <nphamcs@...il.com>, 
	Matthew Wilcox <willy@...radead.org>, 
	Linux regressions mailing list <regressions@...ts.linux.dev>, LKML <linux-kernel@...r.kernel.org>, 
	Johannes Weiner <hannes@...xchg.org>, Linux-MM <linux-mm@...ck.org>
Subject: Re: [regression] oops on heavy compilations ("kernel BUG at
 mm/zswap.c:1005!" and "Oops: invalid opcode: 0000")

On Tue, Sep 3, 2024 at 1:31 AM Aithal, Srikanth <sraithal@....com> wrote:
>
> On 8/25/2024 11:25 AM, Piotr Oniszczuk wrote:
> >
> >
> >> Wiadomość napisana przez Nhat Pham <nphamcs@...il.com> w dniu 23.08.2024, o godz. 18:16:
> >>
> >>
> >> Have you tried with 6.9 yet? IIRC, there are two major changes to
> >> zswap architecture in recent versions.
> >>
> >> 1. In 6.9, we range-partition zswap's rbtrees to reduce lock contention.
> >>
> >
> > Ok - after 32h of continuous compilation also on 6.9.12 I got series of oops (see below).
> >
> I hit similar soft lockup with linuxnext-20240902 build, but I was not
> running anything for that long. Once I hit it while kexecing on
> linuxnext-20240902 and other time was during linuxnext-20240902 boot up.
> I have attached the logs here, I am trying to see if I can recreate it
> on todays linux-next build.

This doesn't look like the same problem to me. I do not see any zswap
functions in the backtrace, I see fuse stuff. Please send a separate
bug report to the relevant mailing lists (probably
linux-fsdevel@...r.kernel.org).