From: Juergen Gross <jgross@suse.com>
To: Sander Eikelenboom <linux@eikelenboom.it>,
linux-kernel <linux-kernel@vger.kernel.org>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: Linux 5.13-rc6 regression to 5.12.x: kernel OOM and panic during kernel boot in low memory Xen VM's (256MB assigned memory).
Date: Thu, 17 Jun 2021 12:30:40 +0200 [thread overview]
Message-ID: <6bcd447e-fd49-0519-a59e-478f84e9120f@suse.com> (raw)
In-Reply-To: <ee8bf04c-6e55-1d9b-7bdb-25e6108e8e1e@eikelenboom.it>
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On 17.06.21 11:26, Sander Eikelenboom wrote:
> L.S.,
>
> I just tried to upgrade and test the linux kernel going from the 5.12
> kernel series to 5.13-rc6 on my homeserver with Xen, but ran in some
> trouble.
>
> Some VM's boot fine (with more than 256MB memory assigned), but the
> smaller (memory wise) PVH ones crash during kernel boot due to OOM.
> Booting VM's with 5.12(.9) kernel still works fine, also when dom0 is
> running 5.13-rc6 (but it has more memory assigned, so that is not
> unexpected).
>
> The 5.13-rc6'ish kernel is a pull of today, tried both with and without
> last AKPM's patches, but that
> makes no difference.
>
> Below are stacktraces from a few of the crashing VM's.
>
> Attached is the kernel .config
>
> Any pointers ?
Did you compare memory usage with a bootable guest between kernel 5.12
and 5.13-rc6?
Any chance you could bisect?
Juergen
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next prev parent reply other threads:[~2021-06-17 10:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-17 9:26 Linux 5.13-rc6 regression to 5.12.x: kernel OOM and panic during kernel boot in low memory Xen VM's (256MB assigned memory) Sander Eikelenboom
2021-06-17 10:30 ` Juergen Gross [this message]
2021-06-17 12:35 ` Sander Eikelenboom
2021-06-17 15:01 ` Linus Torvalds
2021-06-17 15:37 ` Rasmus Villemoes
2021-06-17 15:37 ` Rasmus Villemoes
2021-06-17 18:02 ` Sander Eikelenboom
2021-06-17 19:39 ` Sander Eikelenboom
2021-06-18 1:06 ` Sander Eikelenboom
2021-06-21 16:54 ` Rasmus Villemoes
2021-06-21 21:36 ` Sander Eikelenboom
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