linux-kernel - Re: Boot stall regression from "printk for 5.19" merge #forregzbot

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Date:   Mon, 4 Jul 2022 11:32:02 +0200
From:   Thorsten Leemhuis <regressions@...mhuis.info>
To:     linux-kernel@...r.kernel.org
Cc:     "regressions@...ts.linux.dev" <regressions@...ts.linux.dev>
Subject: Re: Boot stall regression from "printk for 5.19" merge #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 11:39, 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.]
> 
> Hi, this is your Linux kernel regression tracker.
> 
> On 19.06.22 20:49, Marek Behún wrote:
>> Hello Linus, Petr, John,
>>
>> the series
>> https://lore.kernel.org/linux-kernel/YouKQw72H7y9EJQK@alley/
>> merged by commit 537e62c865dc ("Merge tag 'printk-for-5.19' of
>> git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux")
>>
>> and in particular the commit 09c5ba0aa2fc ("printk: add kthread console
>> printers")
>>
>> causes a regression on arm64 (Marvell CN9130-CRB board) where the
>> system boot freezes in most cases (and is unusable until restarted by
>> watchdog), or, in some cases boots, but the console output gets mangled
>> for a while (the serial console spits garbage characters).
> [...]
> #regzbot ^introduced v5.18..v5.19-rc3

#regzbot fixed-by: 07a22b61946f0b80065b