INFO: task kworker/1:6:5066 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:6 state:D stack:21840 pid:5066 tgid:5066 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xcda/0x2f80 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
adu_disconnect+0xb2/0x1c0 drivers/usb/misc/adutux.c:770
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:568 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:560
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22f/0x420 drivers/base/bus.c:574
device_del+0x396/0x9f0 drivers/base/core.c:3871
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
5 locks held by kworker/1:0/24:
#0: ffff88810668b548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc9000019fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff888109b1f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff888109b1f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888112b91190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff888112b91190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88810eb81160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff88810eb81160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
#4: ffff88810eb81160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
1 lock held by khungtaskd/30:
#0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
2 locks held by getty/2605:
#0: ffff888100ea60a0 (&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+0xfc8/0x1490 drivers/tty/n_tty.c:2211
4 locks held by udevd/4931:
#0: ffff8881259fc418 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff88811a8f4888 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff8881158261e8 (kn->active#18){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff8881072fa190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1014 [inline]
#3: ffff8881072fa190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
6 locks held by kworker/1:4/4959:
#0: ffff88810668b548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc9000ee1fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff88810975f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff88810975f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff8881072fa190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff8881072fa190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888123e62160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff888123e62160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
#4: ffff888123e62160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#5: ffffffff89ad38c8 (adutux_mutex){+.+.}-{3:3}, at: adu_disconnect+0xb2/0x1c0 drivers/usb/misc/adutux.c:770
6 locks held by kworker/1:6/5066:
#0: ffff88810668b548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc9000f0c7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff888109728190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff888109728190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff8881131ba190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff8881131ba190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88812c60a160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff88812c60a160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
#4: ffff88812c60a160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#5: ffffffff89ad38c8 (adutux_mutex){+.+.}-{3:3}, at: adu_disconnect+0xb2/0x1c0 drivers/usb/misc/adutux.c:770
6 locks held by kworker/0:2/11894:
#0: ffff88810668b548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900107e7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff88810972f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff88810972f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888108b9f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff888108b9f190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888130949160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#4: ffff888130949160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
#4: ffff888130949160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#5: ffffffff89ad38c8 (adutux_mutex){+.+.}-{3:3}, at: adu_disconnect+0xb2/0x1c0 drivers/usb/misc/adutux.c:770
1 lock held by syz.2.3722/20076:
#0: ffffffff89ad38c8 (adutux_mutex){+.+.}-{3:3}, at: adu_release+0xcf/0x720 drivers/usb/misc/adutux.c:323
1 lock held by syz.3.4650/23486:
#0: ffffffff88ec6df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4795 [inline]
RIP: 0010:__lock_acquire+0x5cd/0x3cb0 kernel/locking/lockdep.c:5092
Code: 45 8b a7 7c 0a 00 00 45 85 e4 0f 85 f8 09 00 00 41 be 04 00 00 00 39 d0 0f 8e c4 01 00 00 48 c7 c0 40 c9 44 93 4c 89 6c 24 58 <41> 89 d5 49 bc 00 00 00 00 00 fc ff df 48 c1 e8 03 88 5c 24 60 4c
RSP: 0018:ffffc900000078d0 EFLAGS: 00000002
RAX: ffffffff9344c940 RBX: 0000000000000001 RCX: 0000000000000007
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: ffffffff88c2d258 R09: fffffbfff1f4a3dc
R10: ffffffff8fa51ee7 R11: 0000000000000002 R12: 0000000000000001
R13: ffffffff88c2d2a8 R14: 0000000000000002 R15: ffffffff88c2c7c0
FS: 0000000000000000(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555586ad64a8 CR3: 0000000107f02000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5759 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
class_rcu_constructor include/linux/rcupdate.h:1150 [inline]
get_nohz_timer_target+0x7a/0x380 kernel/sched/core.c:1100
get_target_base kernel/time/hrtimer.c:209 [inline]
switch_hrtimer_base kernel/time/hrtimer.c:235 [inline]
__hrtimer_start_range_ns kernel/time/hrtimer.c:1254 [inline]
hrtimer_start_range_ns+0xb02/0xe60 kernel/time/hrtimer.c:1302
hrtimer_start include/linux/hrtimer.h:275 [inline]
dummy_timer+0x283a/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1999
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1770
handle_softirqs+0x209/0x8e0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x1e5/0xa40 kernel/sched/core.c:5062
Code: 0f 85 ad 07 00 00 8b 0d 91 13 2b 09 85 c9 0f 85 cb 02 00 00 48 89 df e8 69 95 bf 05 e8 44 7e 33 00 fb 65 48 8b 1d bb 6c db 7e <48> 8d bb 30 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffffff88c07c88 EFLAGS: 00000206
RAX: 0000000004a2e405 RBX: ffffffff88c2c7c0 RCX: 1ffffffff14a6409
RDX: 0000000000000000 RSI: ffffffff8727f9c0 RDI: ffffffff87469a40
RBP: ffffffff88c07cd0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8a535b5f R11: 0000000000000000 R12: ffff8881f583d718
R13: ffff8881013d8000 R14: 0000000000000000 R15: ffff8881f583d718
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xce2/0x2f80 kernel/sched/core.c:6529
schedule_idle+0x59/0x90 kernel/sched/core.c:6647
do_idle+0x287/0x3f0 kernel/sched/idle.c:354
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:424
rest_init+0x16b/0x2b0 init/main.c:747
start_kernel+0x3da/0x4c0 init/main.c:1103
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488
common_startup_64+0x12c/0x138