linux-kernel - Re: [REGRESSION 6.0.x / 6.1.x] NULL dereferencing at tracing

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Date:   Mon, 31 Oct 2022 10:52:12 +0100
From:   Takashi Iwai <tiwai@...e.de>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Takashi Iwai <tiwai@...e.de>, regressions@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION 6.0.x / 6.1.x] NULL dereferencing at tracing

On Mon, 31 Oct 2022 10:48:37 +0100,
Steven Rostedt wrote:
> 
> On Mon, 31 Oct 2022 08:11:28 +0100
> Takashi Iwai <tiwai@...e.de> wrote:
> 
> > Hi Steven,
> > 
> > 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?
> > 
> 
> Thanks for the report, can you send me your .config.

Here it is: for 6.0.x and 6.1-rc3.


thanks,

Takashi


Download attachment "config-6.0.5" of type "application/octet-stream" (264683 bytes)

Download attachment "config-6.1-rc3" of type "application/octet-stream" (266321 bytes)