From: Thomas Gleixner <tglx@linutronix.de>
To: Corentin Labbe <clabbe.montjoie@gmail.com>,
qemu-discuss@nongnu.org, mingo@redhat.com, bp@alien8.de,
hpa@zytor.com, x86@kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: qemu-x86: kernel panic when host is loaded
Date: Thu, 02 Apr 2020 11:57:52 +0200 [thread overview]
Message-ID: <87eet6nra7.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20200402093132.GA15839@Red>
Corentin,
Corentin Labbe <clabbe.montjoie@gmail.com> writes:
> On our kernelci lab, each qemu worker pass an healtcheck job each day and after each job failure, so it is heavily used.
> The healtcheck job is a Linux boot with a stable release.
>
> Since we upgraded our worker to buster, the qemu x86_64 healthcheck randomly panic with:
> <0>[ 0.009000] Kernel panic - not syncing: IO-APIC + timer doesn't work! Boot with apic=debug and send a report. Then try booting with the 'noapic' option.
>
> After some test I found the source of this kernel panic, the host is
> loaded and qemu run "slower". Simply renicing all qemu removed this
> behavour.
>
> So now what can I do ?
> Appart renicing qemu process, does something could be done ?
As the qemu timer/ioapic routing is actually sane, you might try to add
"no_timer_check" to the kernel command line.
Thanks,
tglx
next prev parent reply other threads:[~2020-04-02 9:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-02 9:31 qemu-x86: kernel panic when host is loaded Corentin Labbe
2020-04-02 9:57 ` Thomas Gleixner [this message]
2020-04-02 14:04 ` Dongli Zhang
2020-04-02 14:31 ` Thomas Gleixner
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