INFO: task kworker/0:7:11561 blocked for more than 143 seconds.
Not tainted 5.17.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:7 state:D stack:24304 pid:11561 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0x931/0x22e0 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428
__mutex_lock_common kernel/locking/mutex.c:673 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
unregister_netdev+0xe/0x20 net/core/dev.c:10473
usbnet_disconnect+0x139/0x270 drivers/net/usb/usbnet.c:1623
usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
__device_release_driver+0x5d7/0x700 drivers/base/dd.c:1206
device_release_driver_internal drivers/base/dd.c:1237 [inline]
device_release_driver+0x26/0x40 drivers/base/dd.c:1260
bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529
device_del+0x502/0xd50 drivers/base/core.c:3592
usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419
usb_disconnect.cold+0x27a/0x78e drivers/usb/core/hub.c:2228
hub_port_connect drivers/usb/core/hub.c:5202 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
port_event drivers/usb/core/hub.c:5660 [inline]
hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5742
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2ef/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
3 locks held by kworker/0:0/5:
#0: ffff88810e3aa138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:631 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc9000005fdb8 (
(addr_chk_work).work){+.+.}-{0:0}
, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffffffff88881428 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4595
4 locks held by kworker/1:0/18:
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc9000013fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810d305220
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
(&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
#3: ffff88810d320578
(&port_dev->status_lock
){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline]
){+.+.}-{3:3}, at: hub_event+0x4b7/0x44d0 drivers/usb/core/hub.c:5741
1 lock held by khungtaskd/24:
#0: ffffffff87890c80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
1 lock held by dhcpcd/1208:
2 locks held by getty/1230:
#0: ffff88810ec8a098
(&tty->ldisc_sem
){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900000432e8 (&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
3 locks held by kworker/0:3/10902:
#0: ffff8881083a8538
((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc9000bc27db8 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: trace_sched_stat_runtime include/trace/events/sched.h:517 [inline]
, at: update_curr+0x2b1/0x820 kernel/sched/fair.c:876
#2: ffff8881f682aee8 (lock#6
){..-.}-{2:2}
, at: kcov_remote_stop+0x44/0x610 kernel/kcov.c:972
6 locks held by kworker/0:6/11307:
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc9000cdafdb8 ((work_completion)(&hub->events)
){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810d325220 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:767 [inline]
, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
#3: ffff88811c426220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#3: ffff88811c426220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
#4: ffff88811c4271a8
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
(&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
#5: ffff88813db47888 (&priv->usb_buf_mutex){+.+.}-{3:3}
, at: rtl8xxxu_read32+0x54/0x130 drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c:695
6 locks held by kworker/0:7/11561:
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:631 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc90002527db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810d395220 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:767 [inline]
, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
#3: ffff8881079a6220
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
(&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x78e drivers/usb/core/hub.c:2219
#4: ffff888102b8d1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#4: ffff888102b8d1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline]
#4: ffff888102b8d1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1234 [inline]
#4: ffff888102b8d1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1260
#5: ffffffff88881428 (rtnl_mutex
){+.+.}-{3:3}, at: unregister_netdev+0xe/0x20 net/core/dev.c:10473
3 locks held by kworker/1:9/12288:
#0: ffff8881083a8538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:631 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc90008bb7db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810d37d220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#2: ffff88810d37d220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
3 locks held by udevd/13272:
#0: ffff888117074888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
#0: ffff888117074888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
#1: ffff88811c999490
(kn->active
#47){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
#47){++++}-{0:0}, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
#2: ffff88811c426220 (&dev->mutex){....}-{3:3}
, at: device_lock_interruptible include/linux/device.h:772 [inline]
, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
5 locks held by syz-executor.2/15692:
#0: ffffffff881d1bd0 (minor_rwsem
){++++}-{3:3}, at: usb_open+0x24/0x2e0 drivers/usb/core/file.c:39
#1: ffffffff88271d48 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x59/0x540 drivers/usb/class/cdc-wdm.c:715
#2: ffff88810d320578
(&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline]
(&port_dev->status_lock){+.+.}-{3:3}, at: usb_port_resume+0x2a6/0x1950 drivers/usb/core/hub.c:3649
#3: ffff88810aaba268 (hcd->address0_mutex){+.+.}-{3:3}
, at: usb_reset_and_verify_device+0x3ee/0xee0 drivers/usb/core/hub.c:5944
#4: ffffffff881c3310 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x191/0x1bc0 drivers/usb/core/hub.c:2953
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 5.17.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2ef/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15426 Comm: kworker/0:10 Not tainted 5.17.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:debug_smp_processor_id+0x0/0x20 lib/smp_processor_id.c:60
Code: 4d 8d 86 c8 07 00 00 83 e9 01 e8 fa 00 d3 ff 48 8b 74 24 28 48 c7 c7 e0 43 41 86 e8 e9 00 d3 ff e8 18 ed d6 ff eb a2 0f 1f 00 <0f> 1f 44 00 00 48 c7 c6 20 44 41 86 48 c7 c7 60 44 41 86 e9 78 fe
RSP: 0018:ffffc90000007c20 EFLAGS: 00000086
RAX: 0000000000000001 RBX: 1ffff92000000f8c RCX: ffffffff81294c28
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff88b79210
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff88b79217
R10: fffffbfff116f242 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8ad96ed0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd7fcd8788 CR3: 000000010bdf0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:330 [inline]
rcu_is_watching+0xe/0xb0 kernel/rcu/tree.c:1128
rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
rcu_read_lock_sched_held+0x1c/0x70 kernel/rcu/update.c:123
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x442/0x510 kernel/locking/lockdep.c:5610
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
debug_object_deactivate lib/debugobjects.c:735 [inline]
debug_object_deactivate+0x101/0x300 lib/debugobjects.c:723
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x3f8/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x89/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 11 77 2e 00 5d be 03 00 00 00 e9 e6 25 c1 00 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 f9 c9 be 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc9000d3efae8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88810d930000 RSI: ffffffff812b9501 RDI: 0000000000000003
RBP: ffffc9000d3efb28 R08: 0000000000000000 R09: ffffffff8a7e77bf
R10: ffffffff812b94f7 R11: 0000000000000000 R12: 0000000000000017
R13: ffff8881085a3800 R14: 0000000000000200 R15: ffffc9000d3efb78
console_trylock_spinning kernel/printk/printk.c:1885 [inline]
vprintk_emit+0x377/0x4f0 kernel/printk/printk.c:2244
vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
_printk+0xba/0xed kernel/printk/printk.c:2266
m920x_read drivers/media/usb/dvb-usb/m920x.c:40 [inline]
m920x_rc_query.cold+0x2d/0x32 drivers/media/usb/dvb-usb/m920x.c:188
legacy_dvb_usb_read_remote_control+0xf2/0x530 drivers/media/usb/dvb-usb/dvb-usb-remote.c:123
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2ef/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 4d 8d 86 c8 07 00 00 lea 0x7c8(%r14),%r8
7: 83 e9 01 sub $0x1,%ecx
a: e8 fa 00 d3 ff callq 0xffd30109
f: 48 8b 74 24 28 mov 0x28(%rsp),%rsi
14: 48 c7 c7 e0 43 41 86 mov $0xffffffff864143e0,%rdi
1b: e8 e9 00 d3 ff callq 0xffd30109
20: e8 18 ed d6 ff callq 0xffd6ed3d
25: eb a2 jmp 0xffffffc9
27: 0f 1f 00 nopl (%rax)
* 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction
2f: 48 c7 c6 20 44 41 86 mov $0xffffffff86414420,%rsi
36: 48 c7 c7 60 44 41 86 mov $0xffffffff86414460,%rdi
3d: e9 .byte 0xe9
3e: 78 fe js 0x3e