INFO: task kworker/1:12:28385 blocked for more than 143 seconds.
Not tainted 6.6.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:12 state:D stack:23288 pid:28385 ppid:2 flags:0x00004000
Workqueue: events console_callback
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xc79/0x30a0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_timeout+0x278/0x2c0 kernel/time/timer.c:2143
___down_common kernel/locking/semaphore.c:225 [inline]
__down_common+0x327/0x6c0 kernel/locking/semaphore.c:246
down+0x74/0xa0 kernel/locking/semaphore.c:63
console_lock+0x96/0x150 kernel/printk/printk.c:2652
console_callback+0x63/0x4c0 drivers/tty/vt/vt.c:2933
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff87eac820 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/2443:
#0: ffff88810bb850a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
6 locks held by kworker/0:4/5266:
6 locks held by kworker/1:4/10361:
#0: ffff888109e71d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc9000242fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
#2: ffff888105f13190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#2: ffff888105f13190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
#3: ffff888105f16500 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3138 [inline]
#3: ffff888105f16500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5337 [inline]
#3: ffff888105f16500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline]
#3: ffff888105f16500 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline]
#3: ffff888105f16500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x28b4/0x4f30 drivers/usb/core/hub.c:5822
#4: ffff888102fe4868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5338 [inline]
#4: ffff888102fe4868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5580 [inline]
#4: ffff888102fe4868 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5740 [inline]
#4: ffff888102fe4868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x28da/0x4f30 drivers/usb/core/hub.c:5822
#5: ffffffff888e09f0 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x1a4/0x1dc0 drivers/usb/core/hub.c:2953
4 locks held by kworker/0:9/18348:
#0: ffff888109e71d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc9000df4fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
#2: ffff88810638b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#2: ffff88810638b190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
#3: ffff88810638e500 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3138 [inline]
#3: ffff88810638e500 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x5c4/0x4f30 drivers/usb/core/hub.c:5821
5 locks held by kworker/1:2/21565:
#0: ffff888109e71d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc9000f3cfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
#2: ffff88810636b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#2: ffff88810636b190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
#3: ffff888112163190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#3: ffff888112163190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x890 drivers/usb/core/hub.c:2243
#4: ffff888114f6e160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#4: ffff888114f6e160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888114f6e160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
3 locks held by kworker/0:10/22246:
#0: ffff888109e71d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc90010c1fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
#2: ffff888106763190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#2: ffff888106763190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f30 drivers/usb/core/hub.c:5768
3 locks held by kworker/0:1/27555:
#0: ffff888103e6fd38 ((wq_completion)pm){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc9000e01fd80 ((work_completion)(&hcd->wakeup_work)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
#2: ffff888106753190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#2: ffff888106753190 (&dev->mutex){....}-{3:3}, at: usb_remote_wakeup+0x21/0xe0 drivers/usb/core/hub.c:3772
2 locks held by kworker/0:6/28308:
#0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc90010857d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
2 locks held by kworker/1:12/28385:
#0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc90010bafd80 (console_work){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
2 locks held by kworker/1:0/937:
#0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc9000166fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
4 locks held by syz-executor.3/1681:
#0: ffffffff888ef170 (minor_rwsem){++++}-{3:3}, at: usb_open+0x27/0x2e0 drivers/usb/core/file.c:38
#1: ffffffff88985388 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
#2: ffff88810638e500 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3138 [inline]
#2: ffff88810638e500 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_port_resume+0x2b4/0x1860 drivers/usb/core/hub.c:3696
#3: ffff888105fb8f68 (hcd->address0_mutex){+.+.}-{3:3}, at: usb_reset_and_verify_device+0x2e3/0x10a0 drivers/usb/core/hub.c:6024
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.6.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x26c/0x2d0 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5266 Comm: kworker/0:4 Not tainted 6.6.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:match_held_lock+0x0/0xa0 kernel/locking/lockdep.c:5198
Code: ec 02 85 c0 75 df 48 c7 c6 a0 c7 87 86 48 c7 c7 20 c7 87 86 e8 21 42 d0 fa 0f 0b eb c8 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <53> 48 39 77 10 48 89 fb 74 61 66 83 7f 22 1f 76 56 48 8b 46 08 48
RSP: 0018:ffffc9000202f8f0 EFLAGS: 00000093
RAX: 0000000000000005 RBX: ffff8881142e8aa8 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff87e9a0b0 RDI: ffff8881142e8aa8
RBP: ffffffff87e9a0b0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 205d353936383254 R12: ffff8881142e8000
R13: ffff8881142e8a80 R14: 00000000ffffffff R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ee694b070 CR3: 0000000105716000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5494 [inline]
lock_is_held_type+0xad/0x140 kernel/locking/lockdep.c:5824
lock_is_held include/linux/lockdep.h:288 [inline]
srcu_read_lock_held include/linux/srcu.h:102 [inline]
srcu_read_lock_held include/linux/srcu.h:98 [inline]
console_srcu_read_lock_is_held kernel/printk/printk.c:126 [inline]
console_srcu_read_flags include/linux/console.h:252 [inline]
console_is_usable kernel/printk/printk.c:2693 [inline]
console_flush_all+0x195/0xfb0 kernel/printk/printk.c:2962
console_unlock+0x10c/0x260 kernel/printk/printk.c:3035
vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2307
vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2332
legacy_dvb_usb_read_remote_control+0x403/0x4f0 drivers/media/usb/dvb-usb/dvb-usb-remote.c:124
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304