On Sat, 13 May 2023 18:12:27 -0400, Tian Lan wrote:
> The nr_active counter continues to increase over time which causes the
> blk_mq_get_tag to hang until the thread is rescheduled to a different
> core despite there are still tags available.
>
> kernel-stack
>
> INFO: task inboundIOReacto:3014879 blocked for more than 2 seconds
> Not tainted 6.1.15-amd64 #1 Debian 6.1.15~debian11
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> task:inboundIOReacto state:D stack:0 pid:3014879 ppid:4557 flags:0x00000000
> Call Trace:
> <TASK>
> __schedule+0x351/0xa20
> scheduler+0x5d/0xe0
> io_schedule+0x42/0x70
> blk_mq_get_tag+0x11a/0x2a0
> ? dequeue_task_stop+0x70/0x70
> __blk_mq_alloc_requests+0x191/0x2e0
>
> [...]
Applied, thanks!
[1/1] blk-mq: fix blk_mq_hw_ctx active request accounting
commit: ddad59331a4e16088468ca0ad228a9fe32d7955a
Best regards,
--
Jens Axboe
