linux-kernel - Fwd: in linux 6.3.7-200.fc38.x86_64 goes vlc in time to switch tv channels to zombie-process

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Date:   Mon, 19 Jun 2023 07:24:32 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>, rouckat@...ck.cz,
        Thorsten Leemhuis <linux@...mhuis.info>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux Media <linux-media@...r.kernel.org>,
        Linux Stable <stable@...r.kernel.org>
Subject: Fwd: in linux 6.3.7-200.fc38.x86_64 goes vlc in time to switch tv
 channels to zombie-process

Hi,

I notice a regression report on Bugzilla [1]. Quoting from it:

> vmlinuz-6.3.7-200.fc38.x86_64  and vmlinuz-6.3.8-200.fc38.x86_64
> 
> in the switch tv channel to another vlc stay blocked and and the loading of firmware newer ending. power must be switch to off.
> from dmesg:
> 
> dvb-tuner-si2141-a10-01.fw
> dvb-demod-si2168-d60-01.fw 
> firmware version: D 6.0.13
> 
> restart of dvb modules is impossible, They stay working. 
> 
> kernel 6.3.5-200.fc38.x86_64 works  OK. I don't how works kernel 6.3.6-200.fc38.x86_64
> 
> this same error is in vmlinuz-6.3.5-200.fc38.x86_64 and earliers but there is the occurence accesptable.
> 
> listing from 6.3.5 kernel:
> 
> [ 3378.026035] si2168 7-0064: firmware version: D 6.0.13
> [ 3431.891579] si2168 7-0064: downloading firmware from file 'dvb-demod-si2168-d60-01.fw'
> [ 3434.037278] usb 1-4: dvb_usb_v2: 2nd usb_bulk_msg() failed=-110
> [ 3434.037289] si2168 7-0064: firmware download failed -110
> [ 3436.085265] usb 1-4: dvb_usb_v2: usb_bulk_msg() failed=-110
> 
> lsmod |grep dvb
> dvb_usb_dvbsky         32768  2
> dvb_usb_v2             57344  1 dvb_usb_dvbsky
> m88ds3103              49152  1 dvb_usb_dvbsky
> dvb_core              192512  3 dvb_usb_v2,m88ds3103,dvb_usb_dvbsky
> m
> 
> modprobe -r dvb_usb_dvbsky
> modprobe: FATAL: Module dvb_usb_dvbsky is in use.
> 
> ?????? The problem in dvb_usb_dvbsky or firmware ?????   
> 
> The answer from https://bugzilla.rpmfusion.org was:
> 
> If it was working with previous kernel this is likely a kernel regression. 
> please forward to the dvb sub-system maintainers.
> 
> this problen insist a long time (years), but not too horible

See Bugzilla for the full thread and attached dmesg and lsusb.

Thorsten: The reporter can't perform bisection for he has problem
compiling his own vanilla kernel (see comment 8 on the Bugzilla
ticket, albeit with translated make(1) output). Can you take a look on
it?

Anyway, I'm adding it to regzbot (as stable-specific regression
for now):

#regzbot introduced: v6.3.5..v6.3.7 https://bugzilla.kernel.org/show_bug.cgi?id=217566
#regzbot title: switching TV channel causes VLC and firmware loading hang

Thanks.

[1]: https://bugzilla.kernel.org/show_bug.cgi?id=217566

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