Messages in this thread | | | Date | Fri, 19 Aug 2022 07:49:25 -0700 | Subject | Re: 6.0-rc1 regression block (blk_mq) / RCU task stuck errors + block-io hang | From | Bart Van Assche <> |
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On 8/19/22 05:01, Hans de Goede wrote: > I've been dogfooding 6.0-rc1 on my main workstation and I have hit > this pretty serious bug, serious enough for me to go back to 5.19 > > My dmesg is showing various blk_mq (RCU?) related lockdep splats > followed by some tasks getting stuck on disk-IO. E.g. "sync" > is guaranteed to hang, but other tasks too. > > This seems to be mainly the case on "sd" disks (both sata > and USB) where as my main nvme drive seems fine, which has > probably saved me from worse issues... > > Here are 4 task stuck reports from my last boot, where > I had to turn off the machine by keeping the power button > pressed for 4 seconds. > > [ ... ] > > Sorry for not being able to write a better bug-report but I don't have > the time to dive into this deeper. I hope this report is enough for > someone to have a clue what is going on.
Thank you for the detailed report. I think this report is detailed enough to root-cause this issue, something that was not possible before this report.
Please help with verifying whether this patch fixes this issue: "[PATCH] scsi: sd: Revert "Rework asynchronous resume support"" (https://lore.kernel.org/linux-scsi/20220816172638.538734-1-bvanassche@acm.org/).
Thanks,
Bart.
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