linux-kernel - Re: Sometimes DVB broken with commit 6769a0b7ee0c3b

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Message-ID: <20230605111715.4c0ba2ed@sal.lan>
Date:   Mon, 5 Jun 2023 11:17:15 +0100
From:   Mauro Carvalho Chehab <mchehab@...nel.org>
To:     Thomas Voegtle <tv@...96.de>
Cc:     linux-kernel@...r.kernel.org, Hyunwoo Kim <imv4bel@...il.com>
Subject: Re: Sometimes DVB broken with commit 6769a0b7ee0c3b

Em Tue, 30 May 2023 13:12:57 +0200 (CEST)
Thomas Voegtle <tv@...96.de> escreveu:

> Hello,
> 
> 
> I have the problem that sometimes my DVB card does not initialize 
> properly booting Linux 6.4-rc4.
> This is not always, maybe in 3 out of 4 attempts.
> When this happens somehow you don't see anything special in dmesg, but the 
> card just doesn't work.

Can you paste the full dmesg?

> 
> Reverting this helps:
> commit 6769a0b7ee0c3b31e1b22c3fadff2bfb642de23f
> Author: Hyunwoo Kim <imv4bel@...il.com>
> Date:   Thu Nov 17 04:59:22 2022 +0000
> 
>      media: dvb-core: Fix use-after-free on race condition at dvb_frontend

What do you mean by helps? Does it fix it every time, or it just
reduces the number of init problems?

Regards,
Mauro