On 11/16/21 5:15 PM, Bart Van Assche wrote:
> Hi,
>
> If I run test srp/002 against v5.16-rc1 then dmsetup hangs as follows at
> the end of the test:
>
> sysrq: Show Blocked State
> task:dmsetup state:D stack:28136 pid: 3088 ppid: 3087
> flags:0x00004000
> Call Trace:
> <TASK>
> __schedule+0x4bd/0xc20
> schedule+0x84/0x140
> blk_mq_freeze_queue_wait+0xf7/0x130
> del_gendisk+0x342/0x410
> cleanup_mapped_device+0x165/0x170 [dm_mod]
> __dm_destroy+0x280/0x450 [dm_mod]
> dm_destroy+0x13/0x20 [dm_mod]
> dev_remove+0x156/0x1d0 [dm_mod]
> ctl_ioctl+0x2bb/0x4d0 [dm_mod]
> dm_ctl_ioctl+0xe/0x20 [dm_mod]
> __x64_sys_ioctl+0xc2/0xe0
> do_syscall_64+0x35/0x80
> entry_SYSCALL_64_after_hwframe+0x44/0xae
>
> I haven't seen this hang with any previous kernel version. Could this be
> a block layer issue?
>
> v5.16-rc1 includes Ming's commit 10f7335e3627 ("blk-mq: don't grab
> ->q_usage_counter in blk_mq_sched_bio_merge").
Can you try with:
https://git.kernel.dk/cgit/linux-block/commit/?h=block-5.16&id=95febeb61bf87ca803a1270498cd4cd61554a68f
--
Jens Axboe
