INFO: task kworker/1:6:6024 blocked for more than 143 seconds.
Not tainted 6.5.0-rc4-syzkaller-00075-g98a9e32bdf25 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:6 state:D
stack:21920 pid:6024 ppid:2 flags:0x00004000
Workqueue: events console_callback
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc79/0x30a0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_timeout+0x27a/0x2c0 kernel/time/timer.c:2143
___down_common kernel/locking/semaphore.c:225 [inline]
__down_common+0x328/0x6c0 kernel/locking/semaphore.c:246
down+0x74/0xa0 kernel/locking/semaphore.c:63
console_lock+0x2c/0x80 kernel/printk/printk.c:2600
console_callback+0x63/0x4c0 drivers/tty/vt/vt.c:2934
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
worker_thread+0x687/0x1110 kernel/workqueue.c:2748
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0:
ffffffff87ea74b0
(
rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/13:
#0:
ffffffff87ea71b0
(rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff87ea80c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
4 locks held by kworker/0:2/717:
2 locks held by getty/2435:
#0: ffff888102243098 (
&tty->ldisc_sem){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000452f0 (
&ldata->atomic_read_lock){+.+.}-{3:3}
, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187
3 locks held by kworker/0:3/5294:
6 locks held by kworker/0:6/5342:
2 locks held by kworker/1:6/6024:
#0:
ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567
#1: ffffc90001827d80
(console_work){+.+.}-{0:0}
, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571
3 locks held by kworker/0:5/25641:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc4-syzkaller-00075-g98a9e32bdf25 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
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+0x27b/0x2e0 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+0xf29/0x11b0 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
cdc_wdm 1-1:1.0: nonzero urb status received: -71
NMI backtrace for cpu 0
CPU: 0 PID: 25641 Comm: kworker/0:5 Not tainted 6.5.0-rc4-syzkaller-00075-g98a9e32bdf25 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:__sanitizer_cov_trace_switch+0x16/0x90 kernel/kcov.c:324
Code: 89 fe bf 07 00 00 00 e9 78 fe ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 56 41 55 41 54 49 89 fc 55 48 89 f5 53 48 8b 46 08 <48> 83 f8 20 74 63 77 44 48 83 f8 08 74 53 48 83 f8 10 75 2f 41 bd
RSP: 0018:ffffc90000007020 EFLAGS: 00000086
RAX: 0000000000000008 RBX: ffffffff86886720 RCX: 1ffff92000000df7
RDX: 0000000000040000 RSI: ffffffff874e1c80 RDI: 0000000000000000
RBP: ffffffff874e1c80 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 000000000114c250 R12: 0000000000000000
R13: 0000000000000001 R14: ffffc90000007138 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ff6e98866 CR3: 0000000113bc3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x160/0x1870 lib/vsprintf.c:2773
sprintf+0xcd/0x100 lib/vsprintf.c:3021
print_time kernel/printk/printk.c:1327 [inline]
info_print_prefix+0x258/0x350 kernel/printk/printk.c:1353
record_print_text+0x143/0x410 kernel/printk/printk.c:1402
printk_get_next_message+0x2ca/0x7c0 kernel/printk/printk.c:2809
console_emit_next_record kernel/printk/printk.c:2844 [inline]
console_flush_all+0x39e/0xf50 kernel/printk/printk.c:2933
console_unlock+0xc6/0x1f0 kernel/printk/printk.c:3007
vprintk_emit+0x1c5/0x640 kernel/printk/printk.c:2307
dev_vprintk_emit drivers/base/core.c:4840 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4851
__dev_printk+0xf5/0x270 drivers/base/core.c:4863
_dev_err+0xe5/0x120 drivers/base/core.c:4906
wdm_int_callback+0x10f/0xaa0 drivers/usb/class/cdc-wdm.c:269
__usb_hcd_giveback_urb+0x359/0x5c0 drivers/usb/core/hcd.c:1671
usb_hcd_giveback_urb+0x389/0x430 drivers/usb/core/hcd.c:1754
dummy_timer+0x1415/0x35f0 drivers/usb/gadget/udc/dummy_hcd.c:1987
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x20b/0x94e kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:console_flush_all+0x9b6/0xf50 kernel/printk/printk.c:2939
Code: 30 c7 22 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 8e 21 1c 00 48 85 db 0f 85 94 03 00 00 e8 f0 25 1c 00 fb 48 8b 44 24 08 <48> 8b 14 24 0f b6 00 83 e2 07 38 d0 7f 08 84 c0 0f 85 9d 04 00 00
RSP: 0018:ffffc9000e8f7938 EFLAGS: 00000293
RAX: fffff52001d1ef52 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88811ea00000 RSI: ffffffff81302560 RDI: 0000000000000007
RBP: ffffffff88346900 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 205d304320202020 R12: 0000000000000001
R13: ffffffff88346958 R14: dffffc0000000000 R15: 0000000000000001
console_unlock+0xc6/0x1f0 kernel/printk/printk.c:3007
vprintk_emit+0x1c5/0x640 kernel/printk/printk.c:2307
vprintk+0x89/0xa0 kernel/printk/printk_safe.c:50
_printk+0xc8/0x100 kernel/printk/printk.c:2328
legacy_dvb_usb_read_remote_control+0x403/0x4f0 drivers/media/usb/dvb-usb/dvb-usb-remote.c:124
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
process_scheduled_works kernel/workqueue.c:2664 [inline]
worker_thread+0x896/0x1110 kernel/workqueue.c:2750
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304