INFO: task syz.2.17:6491 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.17 state:D stack:26696 pid:6491 tgid:6460 ppid:6306 task_flags:0x440140 flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5360 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6964
__schedule_loop kernel/sched/core.c:7046 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7061
xfs_ail_push_all_sync+0x1cd/0x2a0 fs/xfs/xfs_trans_ail.c:721
xfs_log_quiesce+0xdf/0x5d0 fs/xfs/xfs_log.c:1019
xfs_fs_freeze+0x7f/0x160 fs/xfs/xfs_super.c:1015
freeze_super+0x905/0x1130 fs/super.c:2133
fs_bdev_freeze+0x1a3/0x310 fs/super.c:1539
bdev_freeze+0xd8/0x220 block/bdev.c:298
xfs_fs_goingdown+0xc5/0x150 fs/xfs/xfs_fsops.c:465
xfs_file_ioctl+0x11b8/0x1830 fs/xfs/xfs_ioctl.c:1371
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f19c9f80809
RSP: 002b:00007f19cad8c058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f19ca146080 RCX: 00007f19c9f80809
RDX: 0000000020000080 RSI: 000000008004587d RDI: 0000000000000004
RBP: 00007f19c9ff393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f19ca146080 R15: 00007fffa5cd9758
INFO: task syz.4.19:6508 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.19 state:D stack:26952 pid:6508 tgid:6483 ppid:6311 task_flags:0x440140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5360 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6964
__schedule_loop kernel/sched/core.c:7046 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7061
xfs_ail_push_all_sync+0x1cd/0x2a0 fs/xfs/xfs_trans_ail.c:721
xfs_log_quiesce+0xdf/0x5d0 fs/xfs/xfs_log.c:1019
xfs_fs_freeze+0x7f/0x160 fs/xfs/xfs_super.c:1015
freeze_super+0x905/0x1130 fs/super.c:2133
fs_bdev_freeze+0x1a3/0x310 fs/super.c:1539
bdev_freeze+0xd8/0x220 block/bdev.c:298
xfs_fs_goingdown+0xc5/0x150 fs/xfs/xfs_fsops.c:465
xfs_file_ioctl+0x11b8/0x1830 fs/xfs/xfs_ioctl.c:1371
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9c24f80809
RSP: 002b:00007f9c25cbb058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9c25146080 RCX: 00007f9c24f80809
RDX: 0000000020000080 RSI: 000000008004587d RDI: 0000000000000004
RBP: 00007f9c24ff393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9c25146080 R15: 00007ffe0f3f9f88
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5627:
#0: ffff88814db830a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
5 locks held by syz.2.17/6491:
#0: ffff888148c701b0 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff888055302420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#1: ffff888055302420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4db/0x1130 fs/super.c:2111
#2: ffff8880553020e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#2: ffff8880553020e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#2: ffff8880553020e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: freeze_super+0x4e3/0x1130 fs/super.c:2112
#3: ffff888055302518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#3: ffff888055302518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x50a/0x1130 fs/super.c:2116
#4: ffff888055302610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#4: ffff888055302610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x8b7/0x1130 fs/super.c:2130
5 locks held by syz.4.19/6508:
#0: ffff888148c718b0 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff88803232e420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#1: ffff88803232e420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4db/0x1130 fs/super.c:2111
#2: ffff88803232e0e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#2: ffff88803232e0e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#2: ffff88803232e0e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: freeze_super+0x4e3/0x1130 fs/super.c:2112
#3: ffff88803232e518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#3: ffff88803232e518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x50a/0x1130 fs/super.c:2116
#4: ffff88803232e610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#4: ffff88803232e610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x8b7/0x1130 fs/super.c:2130
5 locks held by syz.7.28/6877:
#0: ffff888148c73b30 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff88802a018420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#1: ffff88802a018420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4db/0x1130 fs/super.c:2111
#2: ffff88802a0180e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#2: ffff88802a0180e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#2: ffff88802a0180e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: freeze_super+0x4e3/0x1130 fs/super.c:2112
#3: ffff88802a018518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#3: ffff88802a018518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x50a/0x1130 fs/super.c:2116
#4: ffff88802a018610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#4: ffff88802a018610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x8b7/0x1130 fs/super.c:2130
5 locks held by syz.5.48/7507:
#0: ffff888148c72430 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff888074d40420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#1: ffff888074d40420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4db/0x1130 fs/super.c:2111
#2: ffff888074d400e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#2: ffff888074d400e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#2: ffff888074d400e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: freeze_super+0x4e3/0x1130 fs/super.c:2112
#3: ffff888074d40518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#3: ffff888074d40518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x50a/0x1130 fs/super.c:2116
#4: ffff888074d40610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#4: ffff888074d40610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x8b7/0x1130 fs/super.c:2130
5 locks held by syz.9.92/7997:
#0: ffff888148c75230 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff88805d34e420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#1: ffff88805d34e420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4db/0x1130 fs/super.c:2111
#2: ffff88805d34e0e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#2: ffff88805d34e0e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#2: ffff88805d34e0e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: freeze_super+0x4e3/0x1130 fs/super.c:2112
#3: ffff88805d34e518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#3: ffff88805d34e518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x50a/0x1130 fs/super.c:2116
#4: ffff88805d34e610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#4: ffff88805d34e610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x8b7/0x1130 fs/super.c:2130
5 locks held by syz.8.183/8617:
#0: ffff888148c746b0 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff888049d32420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#1: ffff888049d32420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4db/0x1130 fs/super.c:2111
#2: ffff888049d320e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#2: ffff888049d320e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#2: ffff888049d320e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: freeze_super+0x4e3/0x1130 fs/super.c:2112
#3: ffff888049d32518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#3: ffff888049d32518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x50a/0x1130 fs/super.c:2116
#4: ffff888049d32610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#4: ffff888049d32610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x8b7/0x1130 fs/super.c:2130
1 lock held by syz-executor/8841:
#0: ffffffff8e342df8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
#0: ffffffff8e342df8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730 kernel/rcu/tree_exp.h:957
5 locks held by syz.1.264/9040:
#0: ffff888148c474b0 (&bdev->bd_fsfreeze_mutex){+.+.}-{4:4}, at: bdev_freeze+0x2a/0x220 block/bdev.c:289
#1: ffff888029332420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#1: ffff888029332420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4db/0x1130 fs/super.c:2111
#2: ffff8880293320e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#2: ffff8880293320e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#2: ffff8880293320e0 (&type->s_umount_key#51){+.+.}-{4:4}, at: freeze_super+0x4e3/0x1130 fs/super.c:2112
#3: ffff888029332518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#3: ffff888029332518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x50a/0x1130 fs/super.c:2116
#4: ffff888029332610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1847 [inline]
#4: ffff888029332610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x8b7/0x1130 fs/super.c:2130
1 lock held by syz.4.321/9135:
3 locks held by syz.7.319/9137:
#0: ffff888142775440 (&lo->lo_mutex){+.+.}-{4:4}, at: loop_set_status+0xa2/0xd60 drivers/block/loop.c:1232
#1: ffff888142769448 (&q->q_usage_counter(io)#24){++++}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:938 [inline]
#1: ffff888142769448 (&q->q_usage_counter(io)#24){++++}-{0:0}, at: loop_set_status+0x2e4/0xd60 drivers/block/loop.c:1248
#2: ffff888142769480 (&q->q_usage_counter(queue)#8){+.+.}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:938 [inline]
#2: ffff888142769480 (&q->q_usage_counter(queue)#8){+.+.}-{0:0}, at: loop_set_status+0x2e4/0xd60 drivers/block/loop.c:1248
3 locks held by syz.2.320/9140:
#0: ffff888025376440 (&lo->lo_mutex){+.+.}-{4:4}, at: loop_set_status+0xa2/0xd60 drivers/block/loop.c:1232
#1: ffff888141fc62c8 (&q->q_usage_counter(io)#19){++++}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:938 [inline]
#1: ffff888141fc62c8 (&q->q_usage_counter(io)#19){++++}-{0:0}, at: loop_set_status+0x2e4/0xd60 drivers/block/loop.c:1248
#2: ffff888141fc6300 (&q->q_usage_counter(queue)#3){+.+.}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:938 [inline]
#2: ffff888141fc6300 (&q->q_usage_counter(queue)#3){+.+.}-{0:0}, at: loop_set_status+0x2e4/0xd60 drivers/block/loop.c:1248
4 locks held by dhcpcd-run-hook/9154:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
watchdog+0xf60/0xfa0 kernel/hung_task.c:495
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 60 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x3a/0xb0 kernel/rcu/tree.c:751
Code: e8 8b 73 d7 09 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 4d dc 8d 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 8c 9f 7e 00 48 c7 c3 d8 ff c2 92 49 03 1e 48 89
RSP: 0018:ffffc90000007278 EFLAGS: 00000246
RAX: 1ffffffff1bb89ba RBX: 0000000000000000 RCX: 7d61e902db56a500
RDX: 0000000000000000 RSI: ffffffff8c03d4c0 RDI: ffffffff8c03d480
RBP: ffffffff81742d25 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000007458 R11: ffffffff81acd5c0 R12: 0000000000000002
R13: ffffffff8e33d360 R14: ffffffff8ddc4dd0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125a03000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd193a8d068 CR3: 000000007cf92000 CR4: 00000000003526f0
Call Trace:
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x5f/0x360 kernel/locking/lockdep.c:5831
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
__kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587
kasan_save_free_info mm/kasan/kasan.h:406 [inline]
poison_slab_object mm/kasan/common.c:252 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2507 [inline]
slab_free mm/slub.c:6557 [inline]
kmem_cache_free+0x19b/0x690 mm/slub.c:6668
kfree_skb_reason include/linux/skbuff.h:1322 [inline]
__netif_receive_skb_core+0x3a01/0x4020 net/core/dev.c:6052
__netif_receive_skb_one_core net/core/dev.c:6076 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6191
process_backlog+0x60e/0x14f0 net/core/dev.c:6543
__napi_poll+0xc7/0x360 net/core/dev.c:7593
napi_poll net/core/dev.c:7656 [inline]
net_rx_action+0x707/0xe30 net/core/dev.c:7783
handle_softirqs+0x286/0x870 kernel/softirq.c:622
do_softirq+0xec/0x180 kernel/softirq.c:523
__local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:450
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:936 [inline]
__dev_queue_xmit+0x1d79/0x3b50 net/core/dev.c:4790
dev_queue_xmit include/linux/netdevice.h:3368 [inline]
batadv_send_skb_packet+0x418/0x690 net/batman-adv/send.c:100
batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:391 [inline]
batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:419 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x62f/0x7e0 net/batman-adv/bat_iv_ogm.c:1697
process_one_work kernel/workqueue.c:3263 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245