INFO: task kworker/1:2:2807 blocked for more than 143 seconds.
Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D
stack:20928 pid:2807 tgid:2807 ppid:2 flags:0x00004000
Workqueue: events usb_gadget_state_work
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1526
kernfs_find_and_get_ns+0x71/0xc0 fs/kernfs/dir.c:918
kernfs_find_and_get include/linux/kernfs.h:604 [inline]
sysfs_notify+0x98/0xf0 fs/sysfs/file.c:208
usb_gadget_state_work+0x48/0x60 drivers/usb/gadget/udc/core.c:1120
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
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
INFO: task syz-executor:12329 blocked for more than 143 seconds.
Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:23664 pid:12329 tgid:12329 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1526
kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
d_revalidate fs/namei.c:927 [inline]
d_revalidate fs/namei.c:924 [inline]
lookup_fast+0x239/0x540 fs/namei.c:1752
walk_component+0x5b/0x5b0 fs/namei.c:2108
link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2477
link_path_walk fs/namei.c:2409 [inline]
path_openat+0x228/0x2d60 fs/namei.c:3983
do_filp_open+0x20c/0x470 fs/namei.c:4014
do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
do_sys_open fs/open.c:1417 [inline]
__do_sys_openat fs/open.c:1433 [inline]
__se_sys_openat fs/open.c:1428 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f35b89f0141
RSP: 002b:00007fff40a5db10 EFLAGS: 00000287
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000006e7 RCX: 00007f35b89f0141
RDX: 0000000000090800 RSI: 00007f35b8a63ca6 RDI: 00000000ffffff9c
RBP: 00007fff40a5dbac R08: 000000000006459e R09: 00007f35b96ee000
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000264f76 R14: 0000000000264f3a R15: 00007fff40a5dc00
INFO: task udevd:14613 blocked for more than 144 seconds.
Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:24048 pid:14613 tgid:14613 ppid:2844 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
device_lock include/linux/device.h:1014 [inline]
uevent_show+0x188/0x3b0 drivers/base/core.c:2729
dev_attr_show+0x53/0xe0 drivers/base/core.c:2423
sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x87f/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4d174aeb6a
RSP: 002b:00007ffc65ac1d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055b37ad00c40 RCX: 00007f4d174aeb6a
RDX: 0000000000001000 RSI: 000055b37ad5b2a0 RDI: 0000000000000008
RBP: 000055b37ad00c40 R08: 0000000000000008 R09: 0000000000000020
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffc65ac2268 R15: 000000000000000a
INFO: task udevd:14677 blocked for more than 144 seconds.
Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:24048 pid:14677 tgid:14677 ppid:2844 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
device_lock include/linux/device.h:1014 [inline]
uevent_show+0x188/0x3b0 drivers/base/core.c:2729
dev_attr_show+0x53/0xe0 drivers/base/core.c:2423
sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
seq_read_iter+0x4f4/0x12b0 fs/seq_file.c:230
kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x87f/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4d174aeb6a
RSP: 002b:00007ffc65ac2f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055b37ad00c40 RCX: 00007f4d174aeb6a
RDX: 0000000000001000 RSI: 000055b37ad969b0 RDI: 0000000000000008
RBP: 000055b37ad00c40 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffc65ac3438 R15: 000000000000000a
INFO: task kworker/1:8:22115 blocked for more than 144 seconds.
Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:8 state:D
stack:23104 pid:22115 tgid:22115 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1578
kernfs_activate fs/kernfs/dir.c:1403 [inline]
kernfs_add_one+0x39d/0x520 fs/kernfs/dir.c:819
kernfs_create_link+0x1a9/0x240 fs/kernfs/symlink.c:48
sysfs_do_create_link_sd+0x90/0x140 fs/sysfs/symlink.c:44
sysfs_do_create_link fs/sysfs/symlink.c:80 [inline]
sysfs_create_link+0x61/0xc0 fs/sysfs/symlink.c:92
bus_add_device+0x169/0x480 drivers/base/bus.c:503
device_add+0x988/0x1a70 drivers/base/core.c:3622
usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
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
INFO: task syz.0.4505:26102 blocked for more than 145 seconds.
Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.4505 state:D
stack:27376 pid:26102 tgid:26101 ppid:12329 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1578
kernfs_remove_by_name_ns+0x87/0x130 fs/kernfs/dir.c:1689
sysfs_remove_file include/linux/sysfs.h:794 [inline]
driver_remove_file drivers/base/driver.c:198 [inline]
driver_remove_file+0x4a/0x60 drivers/base/driver.c:194
remove_bind_files drivers/base/bus.c:602 [inline]
bus_remove_driver+0x224/0x2c0 drivers/base/bus.c:740
driver_unregister+0x76/0xb0 drivers/base/driver.c:274
usb_gadget_unregister_driver+0x49/0x70 drivers/usb/gadget/udc/core.c:1732
raw_release+0x1ae/0x2b0 drivers/usb/gadget/legacy/raw_gadget.c:462
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2ce0 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3017
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f35b89f0849
RSP: 002b:00007f35b70670e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f35b8bb5fa8 RCX: 00007f35b89f0849
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f35b8bb5fa8
RBP: 00007f35b8bb5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f35b8bb5fac
R13: 0000000000000000 R14: 00007fff40a5d710 R15: 00007fff40a5d7f8
INFO: task syz.3.4506:26108 blocked for more than 145 seconds.
Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.4506 state:D
stack:27848 pid:26108 tgid:26107 ppid:24959 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x102c/0x34b0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1578
kernfs_remove_by_name_ns+0x87/0x130 fs/kernfs/dir.c:1689
sysfs_remove_file include/linux/sysfs.h:794 [inline]
driver_remove_file drivers/base/driver.c:198 [inline]
driver_remove_file+0x4a/0x60 drivers/base/driver.c:194
remove_bind_files drivers/base/bus.c:602 [inline]
bus_remove_driver+0x224/0x2c0 drivers/base/bus.c:740
driver_unregister+0x76/0xb0 drivers/base/driver.c:274
usb_gadget_unregister_driver+0x49/0x70 drivers/usb/gadget/udc/core.c:1732
raw_release+0x1ae/0x2b0 drivers/usb/gadget/legacy/raw_gadget.c:462
__fput+0x3f8/0xb60 fs/file_table.c:450
task_work_run+0x14e/0x250 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xadd/0x2ce0 kernel/exit.c:938
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3017
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe9c887044b
RSP: 002b:00007fe9c6ee4f30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007fe9c887044b
RDX: 00007fe9c6ee6000 RSI: 0000000080085502 RDI: 0000000000000003
RBP: 00007fe9c6ee6000 R08: 0000000000000000 R09: 00332e6364755f79
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000080085502
R13: 0000000800000000 R14: 00000000200007c0 R15: 00007fe9c88edb13
Showing all locks held in the system:
2 locks held by kworker/u8:0/11:
#0: ffff888100089148
((wq_completion)events_unbound){+.+.}-{0:0}
, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900000bfd80
(
(work_completion)(&sub_info->work)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by kworker/1:0/24:
1 lock held by khungtaskd/30:
#0:
ffffffff88ebc400 (
rcu_read_lock){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
3 locks held by kworker/1:2/2807:
1 lock held by udevd/2844:
#0: ffff888100abc148 (&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
2 locks held by getty/2902:
#0:
ffff8881150380a0
(&tty->ldisc_sem
){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1:
ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/12329:
#0: ffff888100abc148 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
4 locks held by udevd/14613:
#0: ffff8881181520a0
(
&p->lock){+.+.}-{4:4}
, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
#1: ffff888114c34088
(
&of->mutex
#2){+.+.}-{4:4}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88810a7622d8 (kn->active#3
){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3:
ffff88810abad190 (&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2729
4 locks held by udevd/14677:
#0:
ffff88811e977540 (&p->lock){+.+.}-{4:4}
, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
#1: ffff88811bba3c88
(
&of->mutex#2){+.+.}-{4:4}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff888113967878 (
kn->active#3
){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff88811d4d9160
(&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
(&dev->mutex){....}-{4:4}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2729
5 locks held by kworker/u8:1/17263:
#0: ffff888100abb148
(
(wq_completion)netns){+.+.}-{0:0}
, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90001b3fd80
(
net_cleanup_work){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8a1853d0 (pernet_ops_rwsem){++++}-{4:4}
, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:586
#3: ffffffff8a19b048 (
rtnl_mutex){+.+.}-{4:4}, at: cleanup_net+0x503/0xb40 net/core/net_namespace.c:622
#4:
ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x87/0x130 fs/kernfs/dir.c:1689
8 locks held by kworker/1:7/18989:
4 locks held by kworker/1:8/22115:
#0: ffff88810668f548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90001b9fd80
(
(work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88810af45190
(&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:1014 [inline]
, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_activate fs/kernfs/dir.c:1403 [inline]
, at: kernfs_add_one+0x39d/0x520 fs/kernfs/dir.c:819
6 locks held by kworker/1:9/23820:
1 lock held by syz-executor/24280:
#0: ffff888100abc148
(&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
2 locks held by kworker/u8:2/24284:
#0: ffff888100089148 (
(wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1:
ffffc900056f7d80 (
(work_completion)(&sub_info->work)
){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
1 lock held by syz-executor/24959:
#0: ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0x39e/0x5a0 fs/kernfs/dir.c:1141
1 lock held by syz.2.4502/26066:
#0:
ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_remove_by_name_ns+0x87/0x130 fs/kernfs/dir.c:1689
1 lock held by syz.0.4505/26102:
#0: ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x87/0x130 fs/kernfs/dir.c:1689
1 lock held by syz.3.4506/26108:
#0:
ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x87/0x130 fs/kernfs/dir.c:1689
1 lock held by modprobe/26113:
#0: ffff888100abc148
(&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/26116:
#0: ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/26117:
#0: ffff888100abc148
(&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/26118:
#0: ffff888100abc148
(&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/26119:
#0:
ffff888100abc148
(&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by modprobe/26120:
#0:
ffff888100abc148 (&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
1 lock held by syz-executor/26121:
#0:
ffff888100abc148 (
&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
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:234 [inline]
watchdog+0xf14/0x1240 kernel/hung_task.c:397
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 0 to CPUs 1:
gspca_pac7302 3-1:0.183: URB error -71, resubmitting
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Not tainted 6.13.0-rc1-syzkaller-ge70140ba0d2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 7e 60 e8 a3 ff ff ff 31 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 48 8b 15 d4 6d a8 7e 65 8b 05 d5 6d a8 7e a9 00 01
RSP: 0018:ffffc900001b8508 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000034 RCX: ffffffff813a9cae
RDX: ffff888101e90000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc900001b8668 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000db3143 R12: 0000000000000017
R13: 0000000000000800 R14: 0000000000000000 R15: ffffffff93473620
FS: 0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdee25a2440 CR3: 0000000008ca0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
record_print_text+0x189/0x400 kernel/printk/printk.c:1479
printk_get_next_message+0x2be/0x690 kernel/printk/printk.c:3008
console_emit_next_record kernel/printk/printk.c:3076 [inline]
console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3210
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86
_printk+0xc8/0x100 kernel/printk/printk.c:2457
int_irq+0x1b7/0x270 drivers/media/usb/gspca/gspca.c:104
__usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17f0/0x3930 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820
handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xfa/0x160 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9a4/0xc60 kernel/printk/printk.c:3211
Code: 00 e8 90 de 27 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 1e 39 20 00 48 85 db 0f 85 55 01 00 00 e8 a0 36 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 25 41 7a
RSP: 0018:ffffc9000019f860 EFLAGS: 00000293
RAX: ffffffff893a7798 RBX: 0000000000000000 RCX: ffffffff813b1bb2
RDX: ffff888101e90000 RSI: ffffffff813b1bc0 RDI: 0000000000000007
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000005 R12: ffffffff893a7798
R13: ffffffff893a7740 R14: ffffc9000019f8f0 R15: dffffc0000000000
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86
_printk+0xc8/0x100 kernel/printk/printk.c:2457
m920x_read drivers/media/usb/dvb-usb/m920x.c:40 [inline]
m920x_rc_query+0x496/0x770 drivers/media/usb/dvb-usb/m920x.c:193
legacy_dvb_usb_read_remote_control+0x10a/0x500 drivers/media/usb/dvb-usb/dvb-usb-remote.c:123
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
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