INFO: task syz-executor.4:8152 blocked for more than 143 seconds.
Not tainted 6.5.0-rc1-syzkaller-00196-gbde7f150276b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24968 pid:8152 ppid:8133 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 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+0x4a/0x60 kernel/sched/completion.c:138
__flush_work+0x130/0x1b0 kernel/workqueue.c:3386
lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
lockdep_hardirqs_on_prepare+0x43c/0x7a0 kernel/locking/lockdep.c:4367
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d328af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d328eb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d328920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/1:2/2509:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc9000b68fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
2 locks held by getty/4770:
#0: ffff88802d2c2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1:
ffffc900015a02f0
(&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
3 locks held by kworker/1:5/5083:
3 locks held by kworker/0:6/5089:
3 locks held by kworker/0:1/6344:
#0:
ffff8880b983bf98
(
&rq->__lock
){-.-.}-{2:2}
, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b98287c8
(&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:995
#2: ffffffff8d328980 (rcu_read_lock_bh){....}-{1:2}, at: rcu_lock_acquire+0x5/0x40 include/linux/rcupdate.h:302
3 locks held by kworker/0:7/6358:
2 locks held by kworker/0:0/7836:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc90006557d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
7 locks held by kworker/1:8/7839:
4 locks held by syz-executor.4/8152:
#0: ffff88805fa990b8
(&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:552 [inline]
(&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1db/0x490 net/bluetooth/hci_core.c:2705
#1: ffff88805fa98078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x449/0x1020 net/bluetooth/hci_sync.c:4931
#2:
ffffffff8e61a168 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1833 [inline]
ffffffff8e61a168 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xaf/0x220 net/bluetooth/hci_conn.c:2517
#3: ffffffff8d32dfb8 (
rcu_state.exp_mutex
){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc1-syzkaller-00196-gbde7f150276b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5089 Comm: kworker/0:6 Not tainted 6.5.0-rc1-syzkaller-00196-gbde7f150276b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: events uhid_device_add_worker
RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:409
Code: a0 63 cc fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 81 20 25 fd 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 89 e9 80 e1 07 38 c1 7c ad 48 89 ef
RSP: 0018:ffffc90004e06d98 EFLAGS: 00000002
RAX: 1ffffffff2466200 RBX: ffffffff923315a0 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000020
RBP: 0000000000000000 R08: ffffffff84bf9ff6 R09: 1ffff11003d70046
R10: dffffc0000000000 R11: ffffed1003d70047 R12: dffffc0000000000
R13: 0000000000002694 R14: 00000000000003fd R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eda72fcee0 CR3: 0000000019bc3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
serial_in drivers/tty/serial/8250/8250.h:117 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:139 [inline]
wait_for_lsr drivers/tty/serial/8250/8250_port.c:2082 [inline]
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3366 [inline]
serial8250_console_write+0x1166/0x18a0 drivers/tty/serial/8250/8250_port.c:3444
console_emit_next_record kernel/printk/printk.c:2877 [inline]
console_flush_all+0x75e/0xd70 kernel/printk/printk.c:2933
console_unlock+0xff/0x270 kernel/printk/printk.c:3007
vprintk_emit+0xd5/0x1f0 kernel/printk/printk.c:2307
dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4840
dev_printk_emit+0xdd/0x120 drivers/base/core.c:4851
_dev_warn+0x122/0x170 drivers/base/core.c:4907
hid_parser_main+0x71b/0xaa0 drivers/hid/hid-core.c:632
hid_open_report+0xaf0/0x1490 drivers/hid/hid-core.c:1269
hid_parse include/linux/hid.h:1091 [inline]
hid_generic_probe+0x3d/0x80 drivers/hid/hid-generic.c:63
__hid_device_probe drivers/hid/hid-core.c:2626 [inline]
hid_device_probe+0x2b4/0x4e0 drivers/hid/hid-core.c:2663
really_probe+0x294/0xc30 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:798
driver_probe_device+0x50/0x420 drivers/base/dd.c:828
__device_attach_driver+0x2d3/0x520 drivers/base/dd.c:956
bus_for_each_drv+0x24a/0x2d0 drivers/base/bus.c:457
__device_attach+0x32f/0x510 drivers/base/dd.c:1028
bus_probe_device+0x185/0x260 drivers/base/bus.c:532
device_add+0xb75/0xf60 drivers/base/core.c:3625
hid_add_device+0x3a9/0x510 drivers/hid/hid-core.c:2809
uhid_device_add_worker+0x44/0xf0 drivers/hid/uhid.c:73
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>