INFO: task kworker/u9:0:53 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:0    state:D stack:26432 pid:53    tgid:53    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: hci4 hci_cmd_sync_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5830 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
 synchronize_rcu_expedited+0x60a/0x760 kernel/rcu/tree_exp.h:966
 hci_chan_del+0x114/0x1d0 net/bluetooth/hci_conn.c:2975
 l2cap_conn_del+0x497/0x630 net/bluetooth/l2cap_core.c:1945
 l2cap_connect_cfm+0x12a/0x1610 net/bluetooth/l2cap_core.c:7868
 hci_connect_cfm include/net/bluetooth/hci_core.h:2216 [inline]
 hci_conn_failed+0x1e8/0x370 net/bluetooth/hci_conn.c:1465
 hci_abort_conn_sync+0xda7/0x1170 net/bluetooth/hci_sync.c:6177
 hci_cmd_sync_work+0x280/0x430 net/bluetooth/hci_sync.c:338
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: task kworker/0:3:5799 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3     state:D stack:25256 pid:5799  tgid:5799  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events xfrm_state_gc_task
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5830 kernel/sched/core.c:7382