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On 22.09.23 13:06, Linux regression tracking #adding (Thorsten Leemhuis)
wrote:
> On 21.08.23 08:46, Shinichiro Kawasaki wrote:
>> I observed a process hang at the blktests test case srp/002 occasionally, using
>> kernel v6.5-rcX. Kernel reported stall of many kworkers [1]. PID 2757 hanged at
>> inode_sleep_on_writeback(). Other kworkers hanged at __inode_wait_for_writeback.
>>
>> The hang is recreated in stable manner by repeating the test case srp/002 (from
>> 15 times to 30 times).
>>
>> I bisected and found the commit 9b4b7c1f9f54 ("RDMA/rxe: Add workqueue support
>> for rxe tasks") looks like the trigger commit. When I revert it from the kernel
>> v6.5-rc7, the hang symptom disappears. I'm not sure how the commit relates to
>> the hang. Comments will be welcomed.
>> […]
>
> Thanks for the report. To be sure the issue doesn't fall through the
> cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression
> tracking bot:
>
> #regzbot ^introduced 9b4b7c1f9f54
> #regzbot title RDMA/rxe: occasionally pocess hang at the blktests test
> case srp/002
> #regzbot ignore-activity
#regzbot monitor:
https://lore.kernel.org/all/20230922163231.2237811-1-yanjun.zhu@xxxxxxxxx/
#regzbot ignore-activity
Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
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