INFO: task kworker/0:3:5035 blocked for more than 143 seconds.
Not tainted 6.4.0-rc5-syzkaller-00305-g022ce8862dff #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D stack:21368 pid:5035 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
usb_kill_urb+0x1c9/0x300 drivers/usb/core/urb.c:728
usb_start_wait_urb+0x1b0/0x520 drivers/usb/core/message.c:64
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x2b1/0x4c0 drivers/usb/core/message.c:153
usb_get_descriptor+0xb7/0x3c0 drivers/usb/core/message.c:793
usb_get_device_descriptor+0x8e/0xe0 drivers/usb/core/message.c:1072
hub_port_init+0x10d5/0x2530 drivers/usb/core/hub.c:4969
hub_port_connect drivers/usb/core/hub.c:5336 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x2bbf/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
2 locks held by kworker/u4:1/12:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffff8880b99287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:996
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4747:
#0: ffff888029102098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
2 locks held by syz-fuzzer/5174:
5 locks held by kworker/0:3/5035:
#0: ffff888018674938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90004e3fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888142b44190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888142b44190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x5460 drivers/usb/core/hub.c:5739
#3: ffff888142b474f8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3147 [inline]
#3: ffff888142b474f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5303 [inline]
#3: ffff888142b474f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
#3: ffff888142b474f8 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline]
#3: ffff888142b474f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x252f/0x5460 drivers/usb/core/hub.c:5793
#4: ffff8881427b2668 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5304 [inline]
#4: ffff8881427b2668 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
#4: ffff8881427b2668 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline]
#4: ffff8881427b2668 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x2564/0x5460 drivers/usb/core/hub.c:5793
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc5-syzkaller-00305-g022ce8862dff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Call Trace:
__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:148 [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:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5026 Comm: syz-executor.4 Not tainted 6.4.0-rc5-syzkaller-00305-g022ce8862dff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:update_load_avg+0x5e3/0x14b0 kernel/sched/fair.c:4255
Code: 98 80 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 cc e2 80 00 48 8b 03 45 31 ff 48 85 c0 0f 84 10 08 00 00 <48> 89 44 24 18 48 8d 98 48 01 00 00 48 89 dd 48 c1 ed 03 42 80 7c
RSP: 0018:ffffc90004d9f7e8 EFLAGS: 00000086
RAX: ffff888077b99800 RBX: ffff888077b99c80 RCX: 0000000000000c00
RDX: 0000000000000c00 RSI: dffffc0000000000 RDI: ffff8880b993c31c
RBP: ffff8880b993c380 R08: 000000000000015d R09: fffffbfff1cabaae
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8880b993c280 R14: 0000000000000001 R15: 0000000000000000
FS: 000055555602d400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555602e808 CR3: 0000000085235000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
dequeue_task_fair+0x7a8/0x13e0 kernel/sched/fair.c:6426
deactivate_task kernel/sched/core.c:2121 [inline]
__schedule+0x612/0x4900 kernel/sched/core.c:6623
schedule+0xc3/0x180 kernel/sched/core.c:6745
do_nanosleep+0x18a/0x610 kernel/time/hrtimer.c:2044
hrtimer_nanosleep+0x226/0x460 kernel/time/hrtimer.c:2097
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1281 [inline]
__se_sys_clock_nanosleep+0x327/0x3b0 kernel/time/posix-timers.c:1258
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f93f58b0e91
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f
RSP: 002b:00007ffeb80265f0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000ec4 RCX: 00007f93f58b0e91
RDX: 00007ffeb8026630 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffeb80266bc R08: 0000000000000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000c14b2 R14: 0000000000000000 R15: 00007ffeb8026720