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Bug#1001001: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204!

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Hi Diederik,

On 22-06-2022 23:15, Diederik de Haas wrote:
> Hmm ...interesting. AFAIK that is a watchdog's task.
> And I was certain I saw sth about it as I've seen (a yet to be reported) an
> issue related to watchdog myself, hence why I remembered it.
> 
> On Saturday, 4 December 2021 22:44:38 CEST Paul Gevers wrote:
>> I noticed in the logs that *after* the reported kernel bug but before
>> the actual hang, I see multiple instances of:
>> watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [apt-get:2204621]
>> and
>> watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [kcompactd0:40]
>> on ci-worker-arm64-07.
> 
> And here is where I saw it. (My watchdog issue doesn't cause a hang btw)

That might be, but this doesn't result in a successful reboot (of the 
system, maybe you meant a reboot of the core?).

> If you have access to the host, APT should be able to tell you.

Depends on what you mean with "the host". Our VM (our host) is 
provisioned by Huawei (their host). I have access to our host.

root@ci-worker-arm64-02:~# apt list *qemu* --installed
Listing... Done
qemu-utils/stable-security,now 1:5.2+dfsg-11+deb11u2 arm64 
[installed,automatic]
N: There is 1 additional version. Please use the '-a' switch to see it

> Via sources.list.erb I found that "<	%= node['debian_release'] %>-backports"
> gets enabled, which I assume results in Stable-backports.

Correct, but currently we don't install anything from there.

> It appears that various tools get installed (but I don't see qemu mentioned
> (explicitly), but I do see 'virt-what' and the package description seems to
> indicate it may be useful to figure out detail of the VM.

root@ci-worker-arm64-02:~# virt-what
qemu
root@ci-worker-arm64-02:~# virt-what --version
1.19

Paul

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Bug#1001001: closed by Salvatore Bonaccorso <carnil@debian.org> (Re: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204!) Paul Gevers <elbrus@debian.org> - 2022-02-20 13:50 +0100
  Bug#1001001: closed by Salvatore Bonaccorso <carnil@debian.org> (Re: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204!) Paul Gevers <elbrus@debian.org> - 2022-03-29 21:10 +0200
    Bug#1001001: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204! Diederik de Haas <didi.debian@cknow.org> - 2022-06-21 22:10 +0200
      Bug#1001001: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204! Paul Gevers <elbrus@debian.org> - 2022-06-21 22:40 +0200
        Bug#1001001: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204! Paul Gevers <elbrus@debian.org> - 2022-06-22 22:10 +0200
          Bug#1001001: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204! Diederik de Haas <didi.debian@cknow.org> - 2022-06-22 23:20 +0200
            Bug#1001001: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204! Diederik de Haas <didi.debian@cknow.org> - 2022-06-22 23:30 +0200
            Bug#1001001: linux-image-5.10.0-9-arm64: kernel BUG at include/linux/swapops.h:204! Paul Gevers <elbrus@debian.org> - 2022-06-23 10:50 +0200

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