INFO: task syz-executor:30908 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:24864 pid:30908 tgid:30908 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
 ib_get_eth_speed+0x151/0x7b0 drivers/infiniband/core/verbs.c:1998
 siw_query_port+0x3c/0x4a0 drivers/infiniband/sw/siw/siw_verbs.c:179
 ib_setup_port_attrs+0x24e/0x2070 drivers/infiniband/core/sysfs.c:1429
 add_one_compat_dev+0x449/0x650 drivers/infiniband/core/device.c:1005