On Fri, 2024-12-13 at 11:42 +0100, Thomas Gleixner wrote:
>
> That's the control thread on CPU0. The hotplug thread on CPU1 is stuck
> here:
>
> task:cpuhp/1 state:D stack:0 pid:24 tgid:24 ppid:2 flags:0x00004000
> Call Trace:
> <TASK>
> __schedule+0x51f/0x1a80
> schedule+0x3a/0x140
> schedule_timeout+0x90/0x110
> msleep+0x2b/0x40
> blk_mq_hctx_notify_offline+0x160/0x3a0
> cpuhp_invoke_callback+0x2a8/0x6c0
> cpuhp_thread_fun+0x1ed/0x270
> smpboot_thread_fn+0xda/0x1d0
>
> So something with those blk_mq fixes went sideways.
$ git bisect bad
7678abee0867e6b7fb89aa40f6e9f575f755fb37 is the first bad commit
commit 7678abee0867e6b7fb89aa40f6e9f575f755fb37 (HEAD)
Author: Ming Lei <ming.lei@xxxxxxxxxx>
Date: Tue Nov 12 20:58:21 2024 +0800
virtio-blk: don't keep queue frozen during system suspend
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