INFO: task syz-executor:4443 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:0 pid:4443 ppid:1 flags:0x0000000d
Call trace:
__switch_to+0x2f4/0x568 arch/arm64/kernel/process.c:555
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xddc/0x1b18 kernel/sched/core.c:6561
schedule+0xc4/0x170 kernel/sched/core.c:6637
schedule_timeout+0xb4/0x2cc kernel/time/timer.c:2144
do_wait_for_common+0x284/0x3e4 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x44/0x5c kernel/sched/completion.c:138
__flush_work+0x128/0x1bc kernel/workqueue.c:3076
__cancel_work_timer+0x2ec/0x448 kernel/workqueue.c:3163
cancel_work_sync+0x24/0x38 kernel/workqueue.c:3199
hci_cmd_sync_clear+0x38/0x1e4 net/bluetooth/hci_sync.c:668
hci_unregister_dev+0x170/0x4b4 net/bluetooth/hci_core.c:2701
vhci_release+0x7c/0xcc drivers/bluetooth/hci_vhci.c:573
__fput+0x1bc/0x7c0 fs/file_table.c:320
____fput+0x20/0x30 fs/file_table.c:348
task_work_run+0x1ec/0x270 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0x54c/0x19a8 kernel/exit.c:880
do_group_exit+0x194/0x22c kernel/exit.c:1022
get_signal+0x11d0/0x1310 kernel/signal.c:2871
do_signal arch/arm64/kernel/signal.c:1081 [inline]
do_notify_resume+0x34c/0x2b28 arch/arm64/kernel/signal.c:1134
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffff800015227d70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffff800015228590 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffff800015227400 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
3 locks held by kworker/u5:0/47:
#0: ffff0000f035d938 ((wq_completion)hci0){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff80001cd97c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000dbc390b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
2 locks held by getty/4077:
#0: ffff0000d65b3098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff80001ce162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xf9c drivers/tty/n_tty.c:2198
2 locks held by kworker/u4:5/4391:
3 locks held by kworker/u5:1/4413:
#0: ffff0000c3c10938 ((wq_completion)hci1){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800020917c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000d4dcd0b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:2/4415:
#0: ffff0000d75db938 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800020aa7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000d371d0b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/1:15/4599:
#0: ffff0000d5ed4138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800021047c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff8000176bb748 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:74
3 locks held by kworker/1:17/4601:
#0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800021067c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000eb29e240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1c8/0x263c drivers/net/netdevsim/fib.c:1491
3 locks held by kworker/u5:5/5787:
#0: ffff0000f1f53138 ((wq_completion)hci3){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800020dd7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000ddd810b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:6/5857:
#0: ffff0000da810138 ((wq_completion)hci13){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff8000211e7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000fb0a90b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:7/6491:
#0: ffff0000ef425138 ((wq_completion)hci10){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff8000218e7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000f855d0b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:8/7025:
#0: ffff0000d4cde138 ((wq_completion)hci4){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800021127c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000d37910b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:9/7647:
#0: ffff0000c2c62938 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800020f87c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000dbaad0b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:10/7707:
#0: ffff0000d8fe7938 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800021817c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000f1dc50b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:11/8295:
#0: ffff0000d78ac138 ((wq_completion)hci7){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800021327c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000f55290b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:12/8925:
#0: ffff0000db913138 ((wq_completion)hci8){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800021827c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000d31490b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:13/9567:
#0: ffff0000f09df138 ((wq_completion)hci9){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff8000217f7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000f749d0b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:14/10172:
#0: ffff0000da812938 ((wq_completion)hci13#2){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff8000259d7c20 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000fb0a8078 (&hdev->lock){+.+.}-{3:3}, at: hci_le_create_big_complete_evt+0xc0/0x800 net/bluetooth/hci_event.c:6872
3 locks held by kworker/u5:15/10888:
#0: ffff0000d3601138 ((wq_completion)hci11){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff800021b57c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000f86f10b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
3 locks held by kworker/u5:16/11432:
#0: ffff0000cad4a938 ((wq_completion)hci12){+.+.}-{0:0}, at: process_one_work+0x6b4/0x13a8 kernel/workqueue.c:2265
#1: ffff8000218f7c20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x6f8/0x13a8 kernel/workqueue.c:2267
#2: ffff0000fa1110b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x184/0x33c net/bluetooth/hci_sync.c:321
1 lock held by syz-executor/13245:
#0: ffff8000176bb748 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
#0: ffff8000176bb748 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6ec/0xce4 net/core/rtnetlink.c:6147
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