linux-kernel - Re: upstream kernel crashes

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Message-ID: <20220815154920.GA4027315@roeck-us.net>
Date:   Mon, 15 Aug 2022 08:49:20 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg KH <gregkh@...uxfoundation.org>
Subject: Re: upstream kernel crashes

On Mon, Aug 15, 2022 at 05:43:19AM -0400, Michael S. Tsirkin wrote:
> On Sun, Aug 14, 2022 at 02:26:10PM -0700, Guenter Roeck wrote:
> > Hi all,
> > 
> > syscaller reports lots of crashes with the mainline kernel. The latest
> > I have seen, based on the current ToT, is attached. Backtraces are not
> > always the same, but this one is typical.
> > 
> > I have not tried to analyze this further.
> > 
> > Guenter
> 
> Thanks a lot for the report!
> 
> Could you please try the latest vhost tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
> 
> which has been reported by Andres Freund to fix a similar issue?
> 

I have now literally seen dozens of reports with syzcaller crashing
in various code locations, but we are still trying to actually reproduce
the problem. We'll respond on the revert patch once we can reproduce the
issue and thus the fix.

Thanks,
Guenter