INFO: task syz-executor:5500 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:20608 pid:5500 tgid:5500 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_work+0xa37/0xc50 kernel/workqueue.c:4217
flush_work kernel/workqueue.c:4238 [inline]
flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260
invalidate_dquots fs/quota/dquot.c:577 [inline]
dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295
ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963
ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870
generic_shutdown_super+0x139/0x2d0 fs/super.c:642
kill_block_super+0x44/0x90 fs/super.c:1696
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24f/0x310 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x28e0 kernel/exit.c:939
do_group_exit+0x207/0x2c0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097
x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7ed57dff9
RSP: 002b:00007ffc59ed3508 EFLAGS: 00000246
ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb7ed5f0159 RCX: 00007fb7ed57dff9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 000000000000000d R08: 00007ffc59ed12a6 R09: 00007ffc59ed47c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc59ed47c0
R13: 00007fb7ed5f0134 R14: 0000000000024ae6 R15: 00007ffc59ed5880
INFO: task syz-executor:5805 blocked for more than 145 seconds.
Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:20992 pid:5805 tgid:5805 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_work+0xa37/0xc50 kernel/workqueue.c:4217
flush_work kernel/workqueue.c:4238 [inline]
flush_delayed_work+0x169/0x1c0 kernel/workqueue.c:4260
invalidate_dquots fs/quota/dquot.c:577 [inline]
dquot_disable+0x7a7/0x1cd0 fs/quota/dquot.c:2295
ocfs2_disable_quotas+0xf3/0x210 fs/ocfs2/super.c:963
ocfs2_dismount_volume+0x1ad/0x8f0 fs/ocfs2/super.c:1870
generic_shutdown_super+0x139/0x2d0 fs/super.c:642
kill_block_super+0x44/0x90 fs/super.c:1696
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24f/0x310 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efe34b7f327
RSP: 002b:00007ffee896e518 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007efe34b7f327
RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffee896f6c0
RBP: 00007efe34bf0134 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffee896f6c0
R13: 00007efe34bf0134 R14: 000055558f2294a8 R15: 00007ffee8970780
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0:
ffffffff8e937de0 (rcu_read_lock){....}-{1:2}
, 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+0x55/0x2a0 kernel/locking/lockdep.c:6720
5 locks held by kworker/u8:2/35:
#0:
ffff88801baeb148
(
(wq_completion)netns){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3204 [inline]
, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1:
ffffc90000ab7d00
(
net_cleanup_work){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3205 [inline]
, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcb2750 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3:
ffffffff8fcbf248
(
rtnl_mutex){+.+.}-{3:3}
, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:11930
#4: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#4: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
3 locks held by kworker/u8:5/1121:
#0:
ffff88801ac89148
((wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3204 [inline]
, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1:
ffffc90004ecfd00
((linkwatch_work).work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3205 [inline]
, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2:
ffffffff8fcbf248
(
rtnl_mutex
){+.+.}-{3:3}
, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
4 locks held by kworker/u8:6/1836:
3 locks held by kworker/u8:7/2514:
#0:
ffff88802e1c9948
(
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90009d0fd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90009d0fd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcbf248 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4736
8 locks held by kworker/u8:9/2960:
3 locks held by kworker/u9:1/4613:
#0:
ffff888065b25948
(
(wq_completion)hci6
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3204 [inline]
, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1:
ffffc9000e827d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3205 [inline]
, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2:
ffff888012b30d80
(
&hdev->req_lock
){+.+.}-{3:3}
, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327
1 lock held by dhcpcd/4890:
#0:
ffffffff8fcbf248 (
rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1aa0 net/ipv4/devinet.c:1097
2 locks held by getty/4987:
#0:
ffff88802e7bd0a0
(&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5500:
#0: ffff8880329fc0e0
(
&type->s_umount_key#92){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
&type->s_umount_key#92){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
&type->s_umount_key#92){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
1 lock held by syz-executor/5805:
#0: ffff88807dde20e0 (&type->s_umount_key#92){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807dde20e0 (&type->s_umount_key#92){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807dde20e0 (&type->s_umount_key#92){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
1 lock held by syz-executor/6171:
#0:
ffff888055af40e0
(&type->s_umount_key
#31){++++}-{3:3}
, at: __super_lock fs/super.c:56 [inline]
, at: __super_lock_excl fs/super.c:71 [inline]
, at: deactivate_super+0xb5/0xf0 fs/super.c:505
1 lock held by syz-executor/6216:
#0: ffff8880796ee0e0
(&type->s_umount_key#31
){++++}-{3:3}
, at: __super_lock fs/super.c:56 [inline]
, at: __super_lock_excl fs/super.c:71 [inline]
, at: deactivate_super+0xb5/0xf0 fs/super.c:505
1 lock held by syz.1.112/6385:
#0: ffff8880329fc0e0
(&type->s_umount_key#92){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
(&type->s_umount_key#92){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.3.133/6528:
#0: ffff88807dde20e0 (&type->s_umount_key#92){++++}-{3:3}
, at: __super_lock fs/super.c:58 [inline]
, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.1.144/6567:
#0:
ffff8880329fc0e0
(
&type->s_umount_key
#92){++++}-{3:3}
, at: __super_lock fs/super.c:58 [inline]
, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.2.155/6620:
#0: ffff8880329fc0e0 (&type->s_umount_key#92){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880329fc0e0 (&type->s_umount_key#92){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.4.140/6631:
#0: ffff888055af40e0 (&type->s_umount_key#31){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888055af40e0 (&type->s_umount_key#31){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
4 locks held by syz-executor/6682:
#0: ffff888047b60d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
#0: ffff888047b60d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698
#1: ffff888047b60078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5183
#2: ffffffff8fe2baa8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1972 [inline]
#2: ffffffff8fe2baa8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2589
#3: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#3: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
1 lock held by syz.0.176/6736:
#0:
ffff8880796ee0e0
(
&type->s_umount_key
#31
){++++}-{3:3}
, at: __super_lock fs/super.c:58 [inline]
, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.3.235/6933:
#0:
ffff88807dde20e0
(
&type->s_umount_key
#92
){++++}-{3:3}
, at: __super_lock fs/super.c:56 [inline]
, at: super_lock+0x196/0x400 fs/super.c:120
7 locks held by syz-executor/7000:
#0: ffff88802400c420
(sb_writers#8){.+.+}-{0:0}
, at: file_start_write include/linux/fs.h:2931 [inline]
, at: vfs_write+0x224/0xc90 fs/read_write.c:679
#1:
ffff88802f6d8888
(
&of->mutex
){+.+.}-{3:3}
, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325
#2:
ffff888020b4ba58
(kn->active
#50
){.+.+}-{0:0}
, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326
#3: ffffffff8f55d2e8 (nsim_bus_dev_list_lock){+.+.}-{3:3}
, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
#4:
ffff88807a50c0e8
(&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1005
#5:
ffff88807a50e250
(
&devlink->lock_key
#25
){+.+.}-{3:3}
, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534
#6:
ffffffff8fcbf248 (
rtnl_mutex
){+.+.}-{3:3}
, at: register_netdevice_notifier_net+0x1a/0xa0 net/core/dev.c:1889
1 lock held by syz-executor/7058:
#0:
ffffffff8fcbf248
(rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
(rtnl_mutex){+.+.}-{3:3}, at: __rtnl_newlink net/core/rtnetlink.c:3720 [inline]
(rtnl_mutex){+.+.}-{3:3}, at: rtnl_newlink+0xab7/0x20a0 net/core/rtnetlink.c:3743
1 lock held by syz.1.282/7079:
#0: ffff8880329fc0e0 (&type->s_umount_key#92){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880329fc0e0 (&type->s_umount_key#92){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor/7139:
#0: ffffffff8fcbf248 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcbf248 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643
1 lock held by syz.2.291/7144:
#0: ffff8880329fc0e0 (&type->s_umount_key
#92
){++++}-{3:3}
, at: __super_lock fs/super.c:58 [inline]
, at: super_lock+0x27c/0x400 fs/super.c:120
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #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+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 2960 Comm: kworker/u8:9 Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound quota_release_workfn
RIP: 0010:__sanitizer_cov_trace_switch+0x109/0x120 kernel/kcov.c:352
Code: e3 48 c1 e3 05 48 8d 43 28 4c 39 f8 77 a3 49 ff c4 4c 89 21 4c 89 44 0b 08 4c 89 74 0b 10 48 89 7c 0b 18 4c 89 4c 0b 20 eb 87 <5b> 41 5c 41 5e 41 5f c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc90000a18978 EFLAGS: 00000246
RAX: 0000000000000100 RBX: 0000000000000080 RCX: ffff88802fab9e00
RDX: 0000000000000003 RSI: ffffffff8ff3c270 RDI: 0000000000000080
RBP: ffffc90000a18bf0 R08: 0000000000000001 R09: ffffffff8b32200a
R10: 0000000000000003 R11: ffff88802fab9e00 R12: dffffc0000000000
R13: ffff88804f90f780 R14: 0000000000000080 R15: ffff88804f90f810
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc38fe656c0 CR3: 000000003464a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__ieee80211_rx_handle_packet net/mac80211/rx.c:5222 [inline]
ieee80211_rx_list+0x1a1a/0x3780 net/mac80211/rx.c:5462
ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5485
ieee80211_rx include/net/mac80211.h:5138 [inline]
ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:439
tasklet_action_common+0x321/0x4d0 kernel/softirq.c:784
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2042 [inline]
RIP: 0010:vprintk_emit+0x700/0xa10 kernel/printk/printk.c:2406
Code: 00 e8 e4 c7 20 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 d2 c7 20 00 eb 06 e8 cb c7 20 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 c0 33 81 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc9000a7ef600 EFLAGS: 00000293
RAX: ffffffff81741395 RBX: 0000000000000000 RCX: ffff88802fab9e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000a7ef710 R08: ffffffff8174136e R09: 1ffffffff285212b
R10: dffffc0000000000 R11: fffffbfff285212c R12: dffffc0000000000
R13: 1ffff920014fdec4 R14: ffffffff817411d0 R15: ffffc9000a7ef6a0
_printk+0xd5/0x120 kernel/printk/printk.c:2432
__mlog_printk+0x281/0x2b0 fs/ocfs2/cluster/masklog.c:77
ocfs2_release_dquot+0x761/0xc40 fs/ocfs2/quota_global.c:795
quota_release_workfn+0x39f/0x650 fs/quota/dquot.c:839
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244