INFO: task kworker/0:8:15275 blocked for more than 143 seconds.
Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:8 state:D
stack:23848 pid:15275 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0x931/0x2360 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:10467
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:3596
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+0x40b/0x500 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
1 lock held by khungtaskd/25:
#0: ffffffff878923c0
(rcu_read_lock
){....}-{1:2}
, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
1 lock held by dhcpcd/1206:
2 locks held by getty/1228:
#0: ffff88810e365098
(&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
4 locks held by kworker/u4:5/1301:
#0: ffff8881001c2938
((wq_completion)netns
){+.+.}-{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: ffffc90000fdfdb0
(
net_cleanup_work
){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffffffff88863710 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:557
#3: ffffffff88877368
(rtnl_mutex
){+.+.}-{3:3}
, at: sit_exit_batch_net+0x88/0x750 net/ipv6/sit.c:1946
6 locks held by kworker/0:3/4103:
#0: ffff8881039ef138
(
(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: ffffc90001747db0
((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810cef9220
(
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
#3:
ffff88810be61220 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
#4: ffff8881041ce1a8
(
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
#5: ffffffff88877368 (
rtnl_mutex
){+.+.}-{3:3}
, at: register_netdev+0x11/0x50 net/core/dev.c:9783
6 locks held by kworker/0:8/15275:
#0:
ffff8881039ef138
((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: ffffc90009087db0
((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2:
ffff88810d051220 (
&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
#3: ffff88810a5e4220
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
(&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x78e drivers/usb/core/hub.c:2219
#4:
ffff8881399641a8 (
&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:760 [inline]
, at: __device_driver_lock drivers/base/dd.c:1033 [inline]
, at: device_release_driver_internal drivers/base/dd.c:1234 [inline]
, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1260
#5: ffffffff88877368 (rtnl_mutex){+.+.}-{3:3}
, at: unregister_netdev+0xe/0x20 net/core/dev.c:10467
3 locks held by kworker/0:10/15277:
#0: ffff88810e111538 (
(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: ffffc90009147db0
((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2:
ffffffff88877368 (
rtnl_mutex
){+.+.}-{3:3}
, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4595
3 locks held by udevd/16633:
#0:
ffff888114004888
(&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
(&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
#1: ffff88811084f748
(
kn->active
#42){++++}-{0:0}
, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
#2: ffff88810be61220
(&dev->mutex
){....}-{3:3}
, at: device_lock_interruptible include/linux/device.h:765 [inline]
, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
1 lock held by syz-executor.4/20864:
#0:
ffffffff88877368
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5589
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 25 Comm: khungtaskd Not tainted 5.16.0-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:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x40b/0x500 kernel/kthread.c:327
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: 1206 Comm: dhcpcd Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:write_comp_data kernel/kcov.c:221 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x18/0x70 kernel/kcov.c:294
Code: 48 89 74 38 e8 4e 89 54 c8 20 48 89 10 c3 0f 1f 40 00 49 89 f8 bf 03 00 00 00 4c 8b 14 24 48 89 f1 65 48 8b 34 25 80 6f 02 00 a3 f8 ff ff 84 c0 74 48 48 8b 86 a0 14 00 00 8b b6 9c 14 00 00
RSP: 0018:ffffc90000007d60 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0020000000000000
RDX: ffff88810fe68000 RSI: ffff88810fe68000 RDI: 0000000000000003
RBP: 0020000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff82038a66 R11: 0000000000000000 R12: 0000000000000040
R13: 0000000000000000 R14: 0000000000000000 R15: 0020000000010000
FS: 00007f03ead33740(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcbc9e2c68 CR3: 0000000107b8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
_find_next_bit+0xe6/0x260 lib/find_bit.c:55
find_next_bit include/asm-generic/bitops/find.h:36 [inline]
next_pending_bucket kernel/time/timer.c:1510 [inline]
__next_timer_interrupt+0x155/0x2c0 kernel/time/timer.c:1530
__run_timers.part.0+0x3ec/0xa30 kernel/time/timer.c:1731
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x288/0x9a5 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x113/0x170 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x8e/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 51 4c 2e 00 5d be 03 00 00 00 e9 66 f0 c0 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 99 e1 be 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc90000f7f290 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88810fe68000 RSI: ffffffff812b9121 RDI: 0000000000000003
RBP: ffffc90000f7f2d0 R08: 0000000000000000 R09: ffffffff8a7d78e7
R10: ffffffff812b9117 R11: 0000000000000000 R12: 0000000000000038
R13: ffff888104fe0000 R14: 0000000000000200 R15: ffffc90000f7f3f0
console_trylock_spinning kernel/printk/printk.c:1884 [inline]
vprintk_emit+0x377/0x4f0 kernel/printk/printk.c:2243
dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4608
dev_printk_emit+0xba/0xf1 drivers/base/core.c:4619
__netdev_printk+0x1c6/0x27a net/core/dev.c:10776
netdev_warn+0xd7/0x109 net/core/dev.c:10829
asix_write_cmd.cold+0x3a/0x46 drivers/net/usb/asix_common.c:54
asix_set_sw_mii drivers/net/usb/asix_common.c:300 [inline]
asix_check_host_enable+0x9e/0x1c0 drivers/net/usb/asix_common.c:74
asix_mdio_read+0x90/0x220 drivers/net/usb/asix_common.c:499
asix_phy_reset+0x104/0x170 drivers/net/usb/asix_devices.c:215
ax88178_reset+0x3f5/0x1310 drivers/net/usb/asix_devices.c:977
usbnet_open+0xc8/0x5d0 drivers/net/usb/usbnet.c:894
__dev_open+0x2c4/0x4d0 net/core/dev.c:1407
__dev_change_flags+0x583/0x750 net/core/dev.c:8139
dev_change_flags+0x93/0x170 net/core/dev.c:8210
devinet_ioctl+0x15d1/0x1ca0 net/ipv4/devinet.c:1144
inet_ioctl+0x1e6/0x320 net/ipv4/af_inet.c:969
sock_do_ioctl+0xcc/0x230 net/socket.c:1122
sock_ioctl+0x2f1/0x640 net/socket.c:1239
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f03eae210e7
Code: 3c 1c e8 1c ff ff ff 85 c0 79 87 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 61 9d 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd9fe8a6d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f03ead336c8 RCX: 00007f03eae210e7
RDX: 00007ffd9fe9a8c8 RSI: 0000000000008914 RDI: 0000000000000005
RBP: 00007ffd9feaaa78 R08: 00007ffd9fe9a888 R09: 00007ffd9fe9a838
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd9fe9a8c8 R14: 0000000000000028 R15: 0000000000008914
----------------
Code disassembly (best guess):
0: 48 89 74 38 e8 mov %rsi,-0x18(%rax,%rdi,1)
5: 4e 89 54 c8 20 mov %r10,0x20(%rax,%r9,8)
a: 48 89 10 mov %rdx,(%rax)
d: c3 retq
e: 0f 1f 40 00 nopl 0x0(%rax)
12: 49 89 f8 mov %rdi,%r8
15: bf 03 00 00 00 mov $0x3,%edi
1a: 4c 8b 14 24 mov (%rsp),%r10
1e: 48 89 f1 mov %rsi,%rcx
21: 65 48 8b 34 25 80 6f mov %gs:0x26f80,%rsi
28: 02 00
* 2a: e8 a3 f8 ff ff callq 0xfffff8d2 <-- trapping instruction
2f: 84 c0 test %al,%al
31: 74 48 je 0x7b
33: 48 8b 86 a0 14 00 00 mov 0x14a0(%rsi),%rax
3a: 8b b6 9c 14 00 00 mov 0x149c(%rsi),%esi