Re: [REGRESSION 6.0.x / 6.1.x] NULL dereferencing at tracing #forregzbot

From: Thorsten Leemhuis
Date: Thu Nov 03 2022 - 08:54:14 EST


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On 31.10.22 08:11, Takashi Iwai wrote:
>
> we've got a bug report indicating the NULL dereference at the recent
> tracing changes, showing at the start of KDE. The details including
> the dmesg are found at:
> https://bugzilla.opensuse.org/show_bug.cgi?id=1204705
>
> It was reported at first for 6.0.3, and confirmed that the problem
> persists with 6.1-rc, too.
>
> The culprit seems to be the commit
> f3ddb74ad0790030c9592229fb14d8c451f4e9a8
> tracing: Wake up ring buffer waiters on closing of the file
> and reverting it seems fixing the problem.
>
> Could you take a look?

Just adding this to the tracking:

#regzbot introduced f3ddb74ad07 ^
https://bugzilla.opensuse.org/show_bug.cgi?id=1204705
#regzbot title NULL dereferencing at tracing
#regzbot ignore-activity
#regzbot monitor:
https://lore.kernel.org/all/20221101191009.1e7378c8@xxxxxxxxxxxxxxxxxxxx/

Ciao, Thorsten