INFO: task kworker/1:4:4071 blocked for more than 143 seconds.
Not tainted 5.17.0-rc2-syzkaller-00044-gc3c9cee59282 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D stack:23096 pid: 4071 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:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6427
__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:5206 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5506 [inline]
port_event drivers/usb/core/hub.c:5664 [inline]
hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5746
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:
5 locks held by kworker/1:1/23:
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc90000197db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810d0a7220 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:767 [inline]
, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5692
#3: ffff88810d13a578 (&port_dev->status_lock){+.+.}-{3:3}
, at: usb_lock_port drivers/usb/core/hub.c:3095 [inline]
, at: hub_port_connect drivers/usb/core/hub.c:5258 [inline]
, at: hub_port_connect_change drivers/usb/core/hub.c:5506 [inline]
, at: port_event drivers/usb/core/hub.c:5664 [inline]
, at: hub_event+0x1fba/0x44d0 drivers/usb/core/hub.c:5746
#4: ffff88810ce7e868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5259 [inline]
#4: ffff88810ce7e868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5506 [inline]
#4: ffff88810ce7e868 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5664 [inline]
#4: ffff88810ce7e868 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x1fe3/0x44d0 drivers/usb/core/hub.c:5746
1 lock held by khungtaskd/25:
#0: ffffffff87891440 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
5 locks held by dhcpcd/1206:
2 locks held by getty/1228:
#0: ffff88810e764098 (&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
6 locks held by kworker/1:4/4071:
#0: ffff8881037b4538
((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: ffffc900014c7db8
(
(work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810c3e1220
(&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:5692
#3: ffff88810e762220 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:767 [inline]
, at: usb_disconnect.cold+0x43/0x78e drivers/usb/core/hub.c:2219
#4: ffff8881166fc1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#4: ffff8881166fc1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline]
#4: ffff8881166fc1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1234 [inline]
#4: ffff8881166fc1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1260
#5: ffffffff88882428 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0xe/0x20 net/core/dev.c:10473
3 locks held by kworker/0:0/11224:
#0: ffff88810e3fcd38 ((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: ffffc900090c7db8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffffffff88882428 (rtnl_mutex
){+.+.}-{3:3}
, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4608
5 locks held by kworker/0:8/18094:
3 locks held by kworker/1:0/4786:
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
#0: ffff8881037b4538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
#1: ffffc9000ba87db8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810d013220 (
&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:767 [inline]
, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5692
6 locks held by kworker/0:9/20944:
#0: ffff8881037b4538
((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:
ffffc90008dcfdb8
((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
#2: ffff88810d017220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#2: ffff88810d017220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5692
#3: ffff88813fd57220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#3: ffff88813fd57220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
#4: ffff88813fd561a8 (&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
#5: ffffffff88882428 (
rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:9789
3 locks held by udevd/21354:
#0: ffff888131950888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
#0: ffff888131950888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
#1: ffff88813908d490
(kn->active#51){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
(kn->active#51){++++}-{0:0}, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
#2: ffff88813fd57220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:772 [inline]
#2: ffff88813fd57220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
1 lock held by syz-executor.1/23640:
#0:
ffffffff8789a4e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
ffffffff8789a4e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fa/0x620 kernel/rcu/tree_exp.h:840
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 25 Comm: khungtaskd Not tainted 5.17.0-rc2-syzkaller-00044-gc3c9cee59282 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1206 Comm: dhcpcd Not tainted 5.17.0-rc2-syzkaller-00044-gc3c9cee59282 #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_cmp1+0x22/0x80 kernel/kcov.c:273
Code: 10 c3 66 0f 1f 44 00 00 53 41 89 fb 41 89 f1 bf 03 00 00 00 65 48 8b 0c 25 40 6f 02 00 48 89 ce 4c 8b 54 24 08 e8 4e f7 ff ff <84> c0 74 51 48 8b 81 a0 14 00 00 44 8b 81 9c 14 00 00 48 8b 10 49
RSP: 0018:ffffc90000158df0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffc90000ecfd98 RCX: ffff88810ee51c00
RDX: 0000000000000000 RSI: ffff88810ee51c00 RDI: 0000000000000003
RBP: ffff8881f692a380 R08: ffffc90000f3fd99 R09: 0000000000e17b01
R10: ffffffff8133653d R11: 0000000000000000 R12: 0000000000e17b01
R13: 0000000000000000 R14: ffff8881f692a300 R15: 0000000000000000
FS: 00007f048bbc3740(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7fa829d008 CR3: 00000001085fe000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__remove_hrtimer+0xad/0x2a0 kernel/time/hrtimer.c:1116
__run_hrtimer kernel/time/hrtimer.c:1665 [inline]
__hrtimer_run_queues+0x4ea/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 21 76 2e 00 5d be 03 00 00 00 e9 66 44 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 09 b0 be 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc90000f5f290 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88810ee51c00 RSI: ffffffff812baea1 RDI: 0000000000000003
RBP: ffffc90000f5f2d0 R08: 0000000000000000 R09: ffffffff8a7e87d7
R10: ffffffff812bae97 R11: 0000000000000000 R12: 0000000000000038
R13: ffff888104f90000 R14: 0000000000000200 R15: ffffc90000f5f3f0
console_trylock_spinning kernel/printk/printk.c:1885 [inline]
vprintk_emit+0x377/0x4f0 kernel/printk/printk.c:2244
dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4604
dev_printk_emit+0xba/0xf1 drivers/base/core.c:4615
__netdev_printk+0x1c6/0x27a net/core/dev.c:10782
netdev_warn+0xd7/0x109 net/core/dev.c:10835
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: 0033:0x7f048bcb10e7
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:00007ffd0b651f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f048bbc36c8 RCX: 00007f048bcb10e7
RDX: 00007ffd0b662158 RSI: 0000000000008914 RDI: 0000000000000005
RBP: 00007ffd0b672308 R08: 00007ffd0b662118 R09: 00007ffd0b6620c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd0b662158 R14: 0000000000000028 R15: 0000000000008914
----------------
Code disassembly (best guess):
0: 10 c3 adc %al,%bl
2: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
8: 53 push %rbx
9: 41 89 fb mov %edi,%r11d
c: 41 89 f1 mov %esi,%r9d
f: bf 03 00 00 00 mov $0x3,%edi
14: 65 48 8b 0c 25 40 6f mov %gs:0x26f40,%rcx
1b: 02 00
1d: 48 89 ce mov %rcx,%rsi
20: 4c 8b 54 24 08 mov 0x8(%rsp),%r10
25: e8 4e f7 ff ff callq 0xfffff778
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 74 51 je 0x7f
2e: 48 8b 81 a0 14 00 00 mov 0x14a0(%rcx),%rax
35: 44 8b 81 9c 14 00 00 mov 0x149c(%rcx),%r8d
3c: 48 8b 10 mov (%rax),%rdx
3f: 49 rex.WB