INFO: task kworker/u4:1:12 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller-00197-g838a854820ee #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1 state:D
stack:19904 pid:12 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
__synchronize_srcu+0x340/0x3f0 kernel/rcu/srcutree.c:1360
fsnotify_mark_destroy_workfn+0x146/0x340 fs/notify/mark.c:898
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/u4:3:42 blocked for more than 145 seconds.
Not tainted 6.4.0-rc1-syzkaller-00197-g838a854820ee #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:3 state:D
stack:23384 pid:42 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_connector_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
__synchronize_srcu+0x340/0x3f0 kernel/rcu/srcutree.c:1360
fsnotify_connector_destroy_workfn+0x44/0xa0 fs/notify/mark.c:208
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
2 locks held by kworker/u4:1/12:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90000117d20 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf27670 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27a30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
6 locks held by kworker/1:1/26:
1 lock held by khungtaskd/28:
#0:
ffffffff8cf274a0
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x0/0x30
1 lock held by khugepaged/34:
#0:
ffffffff8cfd0aa8
(
lock#3
){+.+.}-{3:3}
, at: __lru_add_drain_all+0x66/0x570 mm/swap.c:852
2 locks held by kworker/u4:3/42:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90000b37d20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
6 locks held by kworker/0:2/901:
3 locks held by kworker/u4:6/1246:
2 locks held by getty/4747:
#0: ffff888028cf4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
6 locks held by kworker/1:4/5070:
11 locks held by kworker/0:7/5072:
6 locks held by kworker/0:8/5079:
2 locks held by dhcpcd/5139:
#0:
ffff888073f06e10
(
&sb->s_type->i_mutex_key
#9
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:775 [inline]
, at: __sock_release net/socket.c:652 [inline]
, at: sock_close+0x9c/0x230 net/socket.c:1397
#1:
ffffffff8cf2cb78
(
rcu_state.exp_mutex
){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
1 lock held by dhcpcd/5142:
#0: ffff888073eb7a10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#0: ffff888073eb7a10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline]
#0: ffff888073eb7a10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x9c/0x230 net/socket.c:1397
2 locks held by dhcpcd/5144:
#0: ffff888073f02c10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#0: ffff888073f02c10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline]
#0: ffff888073f02c10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x9c/0x230 net/socket.c:1397
#1: ffffffff8cf2cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8cf2cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
1 lock held by dhcpcd/5145:
#0:
ffff888073eb4410
(
&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline]
&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x9c/0x230 net/socket.c:1397
1 lock held by dhcpcd/5146:
#0: ffff888073eb1410 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#0: ffff888073eb1410 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline]
#0: ffff888073eb1410 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x9c/0x230 net/socket.c:1397
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller-00197-g838a854820ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 901 Comm: kworker/0:2 Not tainted 6.4.0-rc1-syzkaller-00197-g838a854820ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: usb_hub_wq hub_event
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_is_watching+0x8/0xb0 kernel/rcu/tree.c:694
Code: e0 dd f2 8c 4c 89 f6 e8 66 75 f8 02 e9 2b ff ff ff e8 cc 90 3a 09 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 57 41 56 <53> 65 ff 05 58 59 8f 7e e8 bb aa 3a 09 89 c3 83 f8 08 73 76 49 bf
RSP: 0018:ffffc90000007c08 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8192308c
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e55c328
RBP: ffffc90000007e10 R08: dffffc0000000000 R09: fffffbfff1cab866
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11017307af9
R13: ffffc90000007d70 R14: ffff888141f1c008 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3e95f84558 CR3: 0000000077937000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_irq_enable+0x3b/0xf0 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56
net_rx_action+0x490/0x1010 net/core/dev.c:6672
__do_softirq+0x2ab/0x908 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
common_interrupt+0xa8/0xc0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636
RIP: 0010:console_trylock_spinning+0x3b8/0x460
Code: ed 0f 84 48 ff ff ff e8 76 cd 1c 00 fb 31 db eb 45 e8 6c cd 1c 00 e8 07 41 40 09 4d 85 ed 74 cd e8 5d cd 1c 00 fb f3 0f 1e fa 01 00 00 00 48 c7 c7 a0 31 e0 8c 31 f6 ba 01 00 00 00 31 c9 41
RSP: 0018:ffffc90005e5e2e0 EFLAGS: 00000293
RAX: ffffffff816eaf43 RBX: 0000000000000000 RCX: ffff888020ba3b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90005e5e3a8 R08: ffffffff816eaefc R09: fffffbfff206505a
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000bcbc5c
R13: 0000000000000200 R14: 0000000000000046 R15: dffffc0000000000
vprintk_emit+0xbc/0x1f0 kernel/printk/printk.c:2306
dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4840
dev_printk_emit+0xdd/0x120 drivers/base/core.c:4851
_dev_warn+0x122/0x170 drivers/base/core.c:4907
hid_parser_main+0x71b/0xaa0 drivers/hid/hid-core.c:632
hid_open_report+0xaf0/0x1490 drivers/hid/hid-core.c:1269
hid_parse include/linux/hid.h:1090 [inline]
a4_probe+0xa6/0x120 drivers/hid/hid-a4tech.c:128
hid_device_probe+0x29c/0x3a0 drivers/hid/hid-core.c:2633
really_probe+0x294/0xc30 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:800
driver_probe_device+0x50/0x420 drivers/base/dd.c:830
__device_attach_driver+0x2d3/0x520 drivers/base/dd.c:958
bus_for_each_drv+0x24a/0x2d0 drivers/base/bus.c:457
__device_attach+0x32f/0x510 drivers/base/dd.c:1030
bus_probe_device+0x185/0x260 drivers/base/bus.c:532
device_add+0xb75/0xf60 drivers/base/core.c:3625
hid_add_device+0x3a9/0x510 drivers/hid/hid-core.c:2785
usbhid_probe+0xb38/0xea0 drivers/hid/usbhid/hid-core.c:1429
usb_probe_interface+0x5c4/0xb00 drivers/usb/core/driver.c:396
really_probe+0x294/0xc30 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:800
driver_probe_device+0x50/0x420 drivers/base/dd.c:830
__device_attach_driver+0x2d3/0x520 drivers/base/dd.c:958
bus_for_each_drv+0x24a/0x2d0 drivers/base/bus.c:457
__device_attach+0x32f/0x510 drivers/base/dd.c:1030
bus_probe_device+0x185/0x260 drivers/base/bus.c:532
device_add+0xb75/0xf60 drivers/base/core.c:3625
usb_set_configuration+0x1976/0x1fb0 drivers/usb/core/message.c:2211
usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:238
usb_probe_device+0x134/0x270 drivers/usb/core/driver.c:293
really_probe+0x294/0xc30 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:800
driver_probe_device+0x50/0x420 drivers/base/dd.c:830
__device_attach_driver+0x2d3/0x520 drivers/base/dd.c:958
bus_for_each_drv+0x24a/0x2d0 drivers/base/bus.c:457
__device_attach+0x32f/0x510 drivers/base/dd.c:1030
bus_probe_device+0x185/0x260 drivers/base/bus.c:532
device_add+0xb75/0xf60 drivers/base/core.c:3625
usb_new_device+0xb7e/0x18d0 drivers/usb/core/hub.c:2575
hub_port_connect drivers/usb/core/hub.c:5407 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x3016/0x5460 drivers/usb/core/hub.c:5793
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308