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Re: virtio_balloon regression in 5.19-rc3

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  Re: virtio_balloon regression in 5.19-rc3 Thorsten Leemhuis <regressions@leemhuis.info> - 2022-06-21 12:20 +0200
    Re: virtio_balloon regression in 5.19-rc3 #forregzbot Thorsten Leemhuis <regressions@leemhuis.info> - 2022-07-04 12:00 +0200
      Re: virtio_balloon regression in 5.19-rc3 #forregzbot Thorsten Leemhuis <regressions@leemhuis.info> - 2022-07-10 10:30 +0200
        Re: virtio_balloon regression in 5.19-rc3 #forregzbot Thorsten Leemhuis <regressions@leemhuis.info> - 2022-08-15 15:30 +0200

#75707 — Re: virtio_balloon regression in 5.19-rc3

[TLDR: I'm adding this regression report to the list of tracked
regressions; all text from me you find below is based on a few templates
paragraphs you might have encountered already already in similar form.]

On 20.06.22 20:49, Ben Hutchings wrote:
> I've tested a 5.19-rc3 kernel on top of QEMU/KVM with machine type
> pc-q35-5.2.  It has a virtio balloon device defined in libvirt as:
> 
>     <memballoon model="virtio">
>       <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
>     </memballoon>
> 
> but the virtio_balloon driver fails to bind to it:
> 
>     virtio_balloon virtio4: init_vqs: add stat_vq failed
>     virtio_balloon: probe of virtio4 failed with error -5
> 
> On a 5.18 kernel with similar configuration, it binds successfully.
> 
> I've attached the kernel config for 5.19-rc3.

CCing the regression mailing list, as it should be in the loop for all
regressions, as explained here:
https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html

Thanks for the report. To be sure below issue doesn't fall through the
cracks unnoticed, I'm adding it to regzbot, my Linux kernel regression
tracking bot:

#regzbot ^introduced v5.18..v5.19-rc3
#regzbot ignore-activity

This isn't a regression? This issue or a fix for it are already
discussed somewhere else? It was fixed already? You want to clarify when
the regression started to happen? Or point out I got the title or
something else totally wrong? Then just reply -- ideally with also
telling regzbot about it, as explained here:
https://linux-regtracking.leemhuis.info/tracked-regression/

Reminder for developers: When fixing the issue, add 'Link:' tags
pointing to the report (the mail this one replies to), as explained for
in the Linux kernel's documentation; above webpage explains why this is
important for tracked regressions.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)

P.S.: As the Linux kernel's regression tracker I deal with a lot of
reports and sometimes miss something important when writing mails like
this. If that's the case here, don't hesitate to tell me in a public
reply, it's in everyone's interest to set the public record straight.

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#75833 — Re: virtio_balloon regression in 5.19-rc3 #forregzbot

TWIMC: this mail is primarily send for documentation purposes and for
regzbot, my Linux kernel regression tracking bot. These mails usually
contain '#forregzbot' in the subject, to make them easy to spot and filter.

On 21.06.22 11:35, Thorsten Leemhuis wrote:
> [TLDR: I'm adding this regression report to the list of tracked
> regressions; all text from me you find below is based on a few templates
> paragraphs you might have encountered already already in similar form.]
> 
> On 20.06.22 20:49, Ben Hutchings wrote:
>> I've tested a 5.19-rc3 kernel on top of QEMU/KVM with machine type
>> pc-q35-5.2.  It has a virtio balloon device defined in libvirt as:
>>
>>     <memballoon model="virtio">
>>       <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
>>     </memballoon>
>>
>> but the virtio_balloon driver fails to bind to it:
>>
>>     virtio_balloon virtio4: init_vqs: add stat_vq failed
>>     virtio_balloon: probe of virtio4 failed with error -5
>>
> [...]
> #regzbot ^introduced v5.18..v5.19-rc3
> #regzbot ignore-activity

#regzbot introduced 8b4ec69d7e09
#regzbot monitor
https://lore.kernel.org/all/20220622012940.21441-1-jasowang@redhat.com/

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#75883 — Re: virtio_balloon regression in 5.19-rc3 #forregzbot

On 04.07.22 11:40, Thorsten Leemhuis wrote:
> TWIMC: this mail is primarily send for documentation purposes and for
> regzbot, my Linux kernel regression tracking bot. These mails usually
> contain '#forregzbot' in the subject, to make them easy to spot and filter.
> 
> On 21.06.22 11:35, Thorsten Leemhuis wrote:
>> [TLDR: I'm adding this regression report to the list of tracked
>> regressions; all text from me you find below is based on a few templates
>> paragraphs you might have encountered already already in similar form.]
>>
>> On 20.06.22 20:49, Ben Hutchings wrote:
>>> I've tested a 5.19-rc3 kernel on top of QEMU/KVM with machine type
>>> pc-q35-5.2.  It has a virtio balloon device defined in libvirt as:
>>>
>>>     <memballoon model="virtio">
>>>       <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
>>>     </memballoon>
>>>
>>> but the virtio_balloon driver fails to bind to it:
>>>
>>>     virtio_balloon virtio4: init_vqs: add stat_vq failed
>>>     virtio_balloon: probe of virtio4 failed with error -5
>>>
>> [...]
>> #regzbot ^introduced v5.18..v5.19-rc3
>> #regzbot ignore-activity
> 
> #regzbot introduced 8b4ec69d7e09
> #regzbot monitor
> https://lore.kernel.org/all/20220622012940.21441-1-jasowang@redhat.com/

#regzbot fixed-by: 6a9720576c
#regzbot ignore-activity

For details see:
https://lore.kernel.org/all/CACGkMEu8EECPamY__OqQNf7iuKU7nho_-mij2zWULfV2rV+d7A@mail.gmail.com/

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)

P.S.: As the Linux kernel's regression tracker I deal with a lot of
reports and sometimes miss something important when writing mails like
this. If that's the case here, don't hesitate to tell me in a public
reply, it's in everyone's interest to set the public record straight.

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#76128 — Re: virtio_balloon regression in 5.19-rc3 #forregzbot

On 10.07.22 10:06, Thorsten Leemhuis wrote:
> On 04.07.22 11:40, Thorsten Leemhuis wrote:
>> TWIMC: this mail is primarily send for documentation purposes and for
>> regzbot, my Linux kernel regression tracking bot. These mails usually
>> contain '#forregzbot' in the subject, to make them easy to spot and filter.
>>
>> On 21.06.22 11:35, Thorsten Leemhuis wrote:
>>> On 20.06.22 20:49, Ben Hutchings wrote:
>>>> I've tested a 5.19-rc3 kernel on top of QEMU/KVM with machine type
>>>> pc-q35-5.2.  It has a virtio balloon device defined in libvirt as:
>>>>
>>>>     <memballoon model="virtio">
>>>>       <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
>>>>     </memballoon>
>>>>
>>>> but the virtio_balloon driver fails to bind to it:
>>>>
>>>>     virtio_balloon virtio4: init_vqs: add stat_vq failed
>>>>     virtio_balloon: probe of virtio4 failed with error -5
>>>>
>>> [...]
>>> #regzbot ^introduced v5.18..v5.19-rc3
>>> #regzbot ignore-activity
>>
>> #regzbot introduced 8b4ec69d7e09
>> #regzbot monitor
>> https://lore.kernel.org/all/20220622012940.21441-1-jasowang@redhat.com/
> 
> #regzbot fixed-by: 6a9720576c
> #regzbot ignore-activity

For the record: the fix was merged through a different branch and thus
got a different commit id:

#regzbot fixed-by: ebe797f25f68f28581f46a9cb9c1997ac15c39a0

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