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

From: Steven Rostedt
Date: Mon Oct 31 2022 - 05:48:46 EST


On Mon, 31 Oct 2022 08:11:28 +0100
Takashi Iwai <tiwai@xxxxxxx> 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.

Thanks!

-- Steve