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Bug#1054514: linux-image-6.1.0-13-amd64: Debian VM with qxl graphics freezes frequently

Cross-posted to 3 groups.

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Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting
for once, to make this easily accessible to everyone.

Gerd, it seems this regression[1] fell through the cracks. Could you
please take a look? Or is there a good reason why this can't be
addressed? Or was it dealt with and I just missed it?

[1] apparently caused by 5a838e5d5825c8 ("drm/qxl: simplify
qxl_fence_wait") [v5.13-rc1] from Gerd; for details see
https://lore.kernel.org/regressions/ZTgydqRlK6WX_b29@eldamar.lan/

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

#regzbot poke

On 24.10.23 23:39, Timo Lindfors wrote:
> Hi,
> 
> On Tue, 24 Oct 2023, Salvatore Bonaccorso wrote:
>> Thanks for the excelent constructed report! I think it's best to
>> forward this directly to upstream including the people for the
>> bisected commit to get some idea.
> 
> Thanks for the quick reply!
> 
>> Can you reproduce the issue with 6.5.8-1 in unstable as well?
> 
> Unfortunately yes:
> 
> ansible@target:~$ uname -r
> 6.5.0-3-amd64
> ansible@target:~$ time sudo ./reproduce.bash
> Wed 25 Oct 2023 12:27:00 AM EEST starting round 1
> Wed 25 Oct 2023 12:27:24 AM EEST starting round 2
> Wed 25 Oct 2023 12:27:48 AM EEST starting round 3
> bug was reproduced after 3 tries
> 
> real    0m48.838s
> user    0m1.115s
> sys     0m45.530s
> 
> I also tested upstream tag v6.6-rc6:
> 
> ...
> + detected_version=6.6.0-rc6
> + '[' 6.6.0-rc6 '!=' 6.6.0-rc6 ']'
> + exec ssh target sudo ./reproduce.bash
> Wed 25 Oct 2023 12:37:16 AM EEST starting round 1
> Wed 25 Oct 2023 12:37:42 AM EEST starting round 2
> Wed 25 Oct 2023 12:38:10 AM EEST starting round 3
> Wed 25 Oct 2023 12:38:36 AM EEST starting round 4
> Wed 25 Oct 2023 12:39:01 AM EEST starting round 5
> Wed 25 Oct 2023 12:39:27 AM EEST starting round 6
> bug was reproduced after 6 tries
> 
> 
> For completeness, here is also the grub_set_default_version.bash script
> that I had to write to automate this (maybe these could be in debian
> wiki?):
> 
> #!/bin/bash
> set -x
> 
> version="$1"
> 
> idx=$(expr $(grep "menuentry " /boot/grub/grub.cfg | sed 1d |grep -n
> "'Debian GNU/Linux, with Linux $version'"|cut -d: -f1) - 1)
> exec sudo grub-set-default "1>$idx"
> 
> 
> 
> -Timo
> 
> 
> 

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Bug#1054514: linux-image-6.1.0-13-amd64: Debian VM with qxl graphics freezes frequently Timo Lindfors <timo.lindfors@iki.fi> - 2023-10-24 22:20 +0200
  Bug#1054514: linux-image-6.1.0-13-amd64: Debian VM with qxl graphics freezes frequently Salvatore Bonaccorso <carnil@debian.org> - 2023-10-24 23:20 +0200
    Bug#1054514: linux-image-6.1.0-13-amd64: Debian VM with qxl graphics freezes frequently Timo Lindfors <timo.lindfors@iki.fi> - 2023-10-24 23:50 +0200
      Bug#1054514: linux-image-6.1.0-13-amd64: Debian VM with qxl graphics freezes frequently "Linux regression tracking (Thorsten Leemhuis)"  <regressions@leemhuis.info> - 2023-12-06 11:50 +0100
    Bug#1054514: linux-image-6.1.0-13-amd64: Debian VM with qxl graphics freezes frequently Bagas Sanjaya <bagasdotme@gmail.com> - 2023-10-25 02:10 +0200

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