INFO: task kworker/1:2:5755 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D stack:21608 pid:5755 ppid:2 flags:0x00004000
Workqueue: events rfkill_global_led_trigger_worker
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747
rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
INFO: task syz.2.1761:14625 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1761 state:D stack:27016 pid:14625 ppid:11993 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747
rfkill_unregister+0xc8/0x220 net/rfkill/core.c:1149
nfc_unregister_device+0x96/0x2a0 net/nfc/core.c:1167
virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:172
__fput+0x234/0x970 fs/file_table.c:384
task_work_run+0x1ce/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7aaa18f749
RSP: 002b:00007fffde62f708 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00000000000e258f RCX: 00007f7aaa18f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f7aaa3e7da0 R08: 0000000000000001 R09: 00000014de62f9ff
R10: 0000001b2f920000 R11: 0000000000000246 R12: 00007f7aaa3e5fac
R13: 00007f7aaa3e5fa0 R14: ffffffffffffffff R15: 00007fffde62f820
INFO: task syz.4.1763:14637 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1763 state:D stack:24168 pid:14637 ppid:13062 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747
device_lock include/linux/device.h:995 [inline]
nfc_dev_down net/nfc/core.c:143 [inline]
nfc_rfkill_set_block+0x50/0x2e0 net/nfc/core.c:179
rfkill_set_block+0x1c6/0x420 net/rfkill/core.c:346
rfkill_fop_write+0x45c/0x570 net/rfkill/core.c:1305
vfs_write+0x288/0x940 fs/read_write.c:582
ksys_write+0x147/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa89a58f749
RSP: 002b:00007fa89b404038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa89a7e5fa0 RCX: 00007fa89a58f749
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000005
RBP: 00007fa89a613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa89a7e6038 R14: 00007fa89a7e5fa0 R15: 00007ffc60c90178
INFO: task syz.9.1769:14653 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.1769 state:D stack:25672 pid:14653 ppid:8874 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747
rfkill_register+0x37/0x8e0 net/rfkill/core.c:1075
nfc_register_device+0x14a/0x320 net/nfc/core.c:1132
nci_register_device+0x880/0x9d0 net/nfc/nci/core.c:1266
virtual_ncidev_open+0x12c/0x1a0 drivers/nfc/virtual_ncidev.c:157
misc_open+0x326/0x3a0 drivers/char/misc.c:163
chrdev_open+0x59e/0x670 fs/char_dev.c:414
do_dentry_open+0x8c6/0x1500 fs/open.c:929
do_open fs/namei.c:3640 [inline]
path_openat+0x274b/0x3190 fs/namei.c:3797
do_filp_open+0x1c5/0x3d0 fs/namei.c:3824
do_sys_openat2+0x12c/0x1c0 fs/open.c:1421
do_sys_open fs/open.c:1436 [inline]
__do_sys_openat fs/open.c:1452 [inline]
__se_sys_openat fs/open.c:1447 [inline]
__x64_sys_openat+0x139/0x160 fs/open.c:1447
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb857b8f749
RSP: 002b:00007fb858a45038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb857de5fa0 RCX: 00007fb857b8f749
RDX: 0000000000000002 RSI: 0000200000000240 RDI: ffffffffffffff9c
RBP: 00007fb857c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb857de6038 R14: 00007fb857de5fa0 R15: 00007ffc73bdfd38
INFO: task syz.0.1768:14660 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1768 state:D stack:27240 pid:14660 ppid:12652 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747
misc_open+0x59/0x3a0 drivers/char/misc.c:125
chrdev_open+0x59e/0x670 fs/char_dev.c:414
do_dentry_open+0x8c6/0x1500 fs/open.c:929
do_open fs/namei.c:3640 [inline]
path_openat+0x274b/0x3190 fs/namei.c:3797
do_filp_open+0x1c5/0x3d0 fs/namei.c:3824
do_sys_openat2+0x12c/0x1c0 fs/open.c:1421
do_sys_open fs/open.c:1436 [inline]
__do_sys_openat fs/open.c:1452 [inline]
__se_sys_openat fs/open.c:1447 [inline]
__x64_sys_openat+0x139/0x160 fs/open.c:1447
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd182d8f749
RSP: 002b:00007fd183b4b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd182fe5fa0 RCX: 00007fd182d8f749
RDX: 0000000000000002 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007fd182e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd182fe6038 R14: 00007fd182fe5fa0 R15: 00007fffe80d3368
INFO: task syz-executor:14663 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:27912 pid:14663 ppid:1 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747
misc_open+0x59/0x3a0 drivers/char/misc.c:125
chrdev_open+0x59e/0x670 fs/char_dev.c:414
do_dentry_open+0x8c6/0x1500 fs/open.c:929
do_open fs/namei.c:3640 [inline]
path_openat+0x274b/0x3190 fs/namei.c:3797
do_filp_open+0x1c5/0x3d0 fs/namei.c:3824
do_sys_openat2+0x12c/0x1c0 fs/open.c:1421
do_sys_open fs/open.c:1436 [inline]
__do_sys_openat fs/open.c:1452 [inline]
__se_sys_openat fs/open.c:1447 [inline]
__x64_sys_openat+0x139/0x160 fs/open.c:1447
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc258b8df11
RSP: 002b:00007fffa259ac70 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc258b8df11
RDX: 0000000000000002 RSI: 00007fc258c149b7 RDI: 00000000ffffff9c
RBP: 00007fc258c149b7 R08: 0000000000000000 R09: 00007fc25991d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 00007fffa259b048 R15: 0000000000000000
INFO: task syz-executor:14665 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:27912 pid:14665 ppid:1 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6832
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b7/0xcc0 kernel/locking/mutex.c:747
misc_open+0x59/0x3a0 drivers/char/misc.c:125
chrdev_open+0x59e/0x670 fs/char_dev.c:414
do_dentry_open+0x8c6/0x1500 fs/open.c:929
do_open fs/namei.c:3640 [inline]
path_openat+0x274b/0x3190 fs/namei.c:3797
do_filp_open+0x1c5/0x3d0 fs/namei.c:3824
do_sys_openat2+0x12c/0x1c0 fs/open.c:1421
do_sys_open fs/open.c:1436 [inline]
__do_sys_openat fs/open.c:1452 [inline]
__se_sys_openat fs/open.c:1447 [inline]
__x64_sys_openat+0x139/0x160 fs/open.c:1447
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3e38d8df11
RSP: 002b:00007ffceef9e210 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f3e38d8df11
RDX: 0000000000000002 RSI: 00007f3e38e149b7 RDI: 00000000ffffff9c
RBP: 00007f3e38e149b7 R08: 0000000000000000 R09: 00007f3e39b1d6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 00007ffceef9e5e8 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by kworker/u4:1/12:
#0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
1 lock held by khungtaskd/29:
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by kworker/u4:8/1315:
#0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: __schedule+0x20ee/0x44d0 kernel/sched/core.c:6694
2 locks held by getty/5527:
#0: ffff88814d6e00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217
3 locks held by kworker/1:2/5755:
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc9000451fd00 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc9000451fd00 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#2: ffffffff8e2908a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x27/0xd0 net/rfkill/core.c:182
2 locks held by syz.2.1761/14625:
#0: ffff88807e952100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline]
#0: ffff88807e952100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x63/0x2a0 net/nfc/core.c:1165
#1: ffffffff8e2908a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xc8/0x220 net/rfkill/core.c:1149
2 locks held by syz.4.1763/14637:
#0: ffffffff8e2908a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1a2/0x570 net/rfkill/core.c:1297
#1: ffff88807e952100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline]
#1: ffff88807e952100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down net/nfc/core.c:143 [inline]
#1: ffff88807e952100 (&dev->mutex){....}-{3:3}, at: nfc_rfkill_set_block+0x50/0x2e0 net/nfc/core.c:179
3 locks held by syz.9.1769/14653:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
#1: ffff888146a7d100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:995 [inline]
#1: ffff888146a7d100 (&dev->mutex){....}-{3:3}, at: nfc_register_device+0xa1/0x320 net/nfc/core.c:1128
#2: ffffffff8e2908a8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x37/0x8e0 net/rfkill/core.c:1075
1 lock held by syz.0.1768/14660:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14663:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14665:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14668:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14669:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14671:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14673:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14676:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14677:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14679:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14681:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14684:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
1 lock held by syz-executor/14685:
#0: ffffffff8d4c2e28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x59/0x3a0 drivers/char/misc.c:125
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf41/0xf80 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12 Comm: kworker/u4:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:mark_lock+0x9/0x320 kernel/locking/lockdep.c:4639
Code: 4a 8e e8 9a 49 75 00 4c 89 f7 41 89 d9 e9 79 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 <53> 50 89 d5 49 89 f6 48 89 fb 49 bd 00 00 00 00 00 fc ff df 83 fa
RSP: 0018:ffffc90000117810 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffff88801ba5e4d8 RCX: ffffffff8167b5a4
RDX: 0000000000000002 RSI: ffff88801ba5e508 RDI: ffff88801ba5da00
RBP: ffffc900001178e8 R08: ffffffff90d94517 R09: 1ffffffff21b28a2
R10: dffffc0000000000 R11: fffffbfff21b28a3 R12: ffff88801ba5e528
R13: 0000000000000001 R14: 1ffff1100374bc9b R15: ffff88801ba5e508
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ae27f27610 CR3: 000000000cb30000 CR4: 00000000003506f0
Call Trace:
mark_held_locks kernel/locking/lockdep.c:4274 [inline]
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare+0x240/0x760 kernel/locking/lockdep.c:4359
trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
_raw_spin_unlock_irqrestore+0x86/0x110 kernel/locking/spinlock.c:194
__debug_check_no_obj_freed lib/debugobjects.c:999 [inline]
debug_check_no_obj_freed+0x51f/0x540 lib/debugobjects.c:1020
slab_free_hook mm/slub.c:1786 [inline]
slab_free_freelist_hook+0xd2/0x1b0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x280 mm/slub.c:3852
nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline]
nsim_dev_trap_report_work+0x76f/0xb00 drivers/net/netdevsim/dev.c:851
process_one_work kernel/workqueue.c:2634 [inline]
process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293