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Date:   Fri, 20 Oct 2023 09:01:05 +0200
From:   "Linux regression tracking #adding (Thorsten Leemhuis)" 
To:     Andres Freund <>, Theodore Ts'o <>
Cc:     Shreeya Patel <>,,
        Ricardo CaƱuelo <>,,,,
        Linux regressions mailing list <>
Subject: Re: task hung in ext4_fallocate #2

[TLDR: I'm adding this report to the list of tracked Linux kernel
regressions; the text you find below is based on a few templates
paragraphs you might have encountered already in similar form.
See link in footer if these mails annoy you.]

On 17.10.23 05:37, Andres Freund wrote:
> As previously reported in
> I found some hangs below ext4_fallocate(), in 6.6-rc*.  As it looks like my
> issue was unrelated to the thread I had responded to, I was asked to start
> this new thread.
> I just was able to reproduce the issue, after upgrading to 6.6-rc6 - this time
> it took ~55min of high load (io_uring using branch of postgres, running a
> write heavy transactional workload concurrently with concurrent bulk data
> load) to trigger the issue.
> For now I have left the system running, in case there's something you would
> like me to check while the system is hung.
> [...]

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

#regzbot ^introduced v6.5..v6.6-rc6
#regzbot title ext4: task hung in ext4_fallocate
#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 and tell me -- ideally
while also telling regzbot about it, as explained by the page listed in
the footer of this mail.

Developers: When fixing the issue, remember to add 'Link:' tags pointing
to the report (the parent of this mail). See page linked in footer for

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
Everything you wanna know about Linux kernel regression tracking:
That page also explains what to do if mails like this annoy you.

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