Bug 217540 - w_scan hangs on 6.3.7 and does not react on kill -9
Summary: w_scan hangs on 6.3.7 and does not react on kill -9
Status: NEW
Alias: None
Product: v4l-dvb
Classification: Unclassified
Component: dvb-other (show other bugs)
Hardware: All Linux
: P3 normal
Assignee: dvb-other
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-06-11 18:20 UTC by Lukasz Kalamlacki
Modified: 2023-06-13 08:18 UTC (History)
2 users (show)

See Also:
Kernel Version: 6.3.7
Subsystem:
Regression: No
Bisected commit-id:


Attachments
dmesg output (71.32 KB, text/plain)
2023-06-12 13:41 UTC, Lukasz Kalamlacki
Details
kernel config (255.59 KB, text/plain)
2023-06-12 13:42 UTC, Lukasz Kalamlacki
Details
the bug screenshot (3.00 MB, image/jpeg)
2023-06-12 14:03 UTC, Lukasz Kalamlacki
Details

Description Lukasz Kalamlacki 2023-06-11 18:20:50 UTC
Hi,

w_scan tool on kernel 6.3.7 hangs so badly that it cannot be killed by kill -9 
I tried also w_scan_cpp 20230604 but it also fails I have 2040:8268 Hauppauge soloHD device as reported by lsusb. During reboot of the OS it prints a lot of kernel errors but it is after syslog is killed I guess and in syslog messages I do not see anything. On default Debian kernel 5.10.0-23 this problem does not exists.

Best regards,
Łukasz
Comment 1 Bagas Sanjaya 2023-06-12 00:59:38 UTC
(In reply to Lukasz Kalamlacki from comment #0)
> Hi,
> 
> w_scan tool on kernel 6.3.7 hangs so badly that it cannot be killed by kill
> -9 
> I tried also w_scan_cpp 20230604 but it also fails I have 2040:8268
> Hauppauge soloHD device as reported by lsusb. During reboot of the OS it
> prints a lot of kernel errors but it is after syslog is killed I guess and
> in syslog messages I do not see anything. On default Debian kernel 5.10.0-23
> this problem does not exists.
> 
> Best regards,
> Łukasz

dmesg please?

And also, can you bisect between v5.10 and v6.3 to find the culprit? Can
you also try latest mainline?
Comment 2 Lukasz Kalamlacki 2023-06-12 13:41:34 UTC
Created attachment 304400 [details]
dmesg output
Comment 3 Lukasz Kalamlacki 2023-06-12 13:42:02 UTC
Created attachment 304401 [details]
kernel config
Comment 4 Lukasz Kalamlacki 2023-06-12 13:55:24 UTC
It seems that kernel 6.1.33 works fine and also kernel 6.3.6 works fine
Comment 5 Lukasz Kalamlacki 2023-06-12 14:03:54 UTC
Created attachment 304402 [details]
the bug screenshot
Comment 6 Stefan Lippers-Hollmann 2023-06-13 08:18:38 UTC
I've observed a similar issue with vdr and kernel v6.3.7 and v6.3.8-rc1 (v6.3.6 was fine) and bisected it down to https://lkml.kernel.org/r/<20230607200927.531074599@linuxfoundation.org>, reported to linux-stable@vger.k.o with https://lkml.kernel.org/r/<20230613053314.70839926@mir>.

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