On 2/15/23 2:39 PM, John David Anglin wrote: > On 2023-02-15 4:06 p.m., John David Anglin wrote: >> On 2023-02-15 3:37 p.m., Jens Axboe wrote: >>>> System crashes running test buf-ring.t. >>> Huh, what's the crash? >> Not much info. System log indicates an HPMC occurred. Unfortunately, recovery code doesn't work. > The following occurred running buf-ring.t under gdb: > > INFO: task kworker/u64:9:18319 blocked for more than 123 seconds. > Not tainted 6.1.12+ #4 > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > task:kworker/u64:9 state:D stack:0 pid:18319 ppid:2 flags:0x00000000 > Workqueue: events_unbound io_ring_exit_work > Backtrace: I don't think this is buf-ring, it's off the exit path which is offloaded and most likely related to your iopoll report. -- Jens Axboe
