[v6.6] kernel panic: kernel: panic_on_warn set ...

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syzbot

unread,
Aug 4, 2026, 5:06:41 PM (5 days ago) Aug 4
to syzkaller...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: aa0e49877a2e Linux 6.6.148
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17394bb9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f0bc3d90c30838b5
dashboard link: https://syzkaller.appspot.com/bug?extid=ba58810472c35a9721f2
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f83b390cfc1f/disk-aa0e4987.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1d4bdb338edd/vmlinux-aa0e4987.xz
kernel image: https://storage.googleapis.com/syzbot-assets/3f57c1d51ee3/bzImage-aa0e4987.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ba5881...@syzkaller.appspotmail.com

Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 PID: 8428 Comm: syz.5.433 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<TASK>
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
panic+0x2ca/0x720 kernel/panic.c:340
check_panic_on_warn kernel/panic.c:236 [inline]
__warn+0x2e0/0x470 kernel/panic.c:681
__report_bug lib/bug.c:199 [inline]
report_bug+0x2be/0x4f0 lib/bug.c:219
handle_bug+0xcf/0x120 arch/x86/kernel/traps.c:310
exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:345
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:606
RIP: 0010:svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:582
Code: 24 49 83 c7 20 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 62 a7 35 f8 49 8b 37 48 c7 c7 a0 20 d9 8b e8 93 f2 a6 f7 <0f> 0b e9 78 fd ff ff e8 d7 24 dd f7 c6 05 f6 b7 cc 04 01 4c 89 e0
RSP: 0018:ffffc9001066fab8 EFLAGS: 00010246
RAX: 7c509c4f49e6fd00 RBX: ffff88802cc04000 RCX: 0000000000080000
RDX: ffffc9001851a000 RSI: 000000000003ef22 RDI: 000000000003ef23
RBP: 0000000000000001 R08: ffff8880b8f28c53 R09: 1ffff110171e518a
R10: dffffc0000000000 R11: ffffed10171e518b R12: ffff88805cde5000
R13: dffffc0000000000 R14: ffff88805cde5050 R15: ffffffff8d3e18e0
kref_put include/linux/kref.h:65 [inline]
svc_put include/linux/sunrpc/svc.h:124 [inline]
nfsd_svc+0x762/0xab0 fs/nfsd/nfssvc.c:816
write_threads+0x393/0x510 fs/nfsd/nfsctl.c:417
nfsctl_transaction_write+0x10c/0x150 fs/nfsd/nfsctl.c:113
vfs_write+0x299/0x9a0 fs/read_write.c:582
ksys_write+0x151/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f19f3b9e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f19f1df6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f19f3e25fa0 RCX: 00007f19f3b9e019
RDX: 0000000000000002 RSI: 00002000000001c0 RDI: 0000000000000004
RBP: 00007f19f3c3500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f19f3e26038 R14: 00007f19f3e25fa0 R15: 00007ffca8112328
</TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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syzbot

unread,
Aug 4, 2026, 5:46:33 PM (5 days ago) Aug 4
to syzkaller...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: fb28aa725e05 Linux 6.1.180
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=10715bb9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=31dfefc4a14efea3
dashboard link: https://syzkaller.appspot.com/bug?extid=25d5e66b630c36b57df8
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/9a6fe2a54d0f/disk-fb28aa72.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/742b23a1d931/vmlinux-fb28aa72.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b3f257c16d2e/bzImage-fb28aa72.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+25d5e6...@syzkaller.appspotmail.com

Kernel panic - not syncing: kernel: panic_on_warn set ...

======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.4.451/6054 is trying to acquire lock:
ffffffff8cb21d40 (console_owner){..-.}-{0:0}, at: console_lock_spinning_enable kernel/printk/printk.c:1818 [inline]
ffffffff8cb21d40 (console_owner){..-.}-{0:0}, at: console_emit_next_record+0x68f/0xb50 kernel/printk/printk.c:2774

but task is already holding lock:
ffff88802780a818 (&p->pi_lock){-.-.}-{2:2}, at: task_call_func+0x3f/0x260 kernel/sched/core.c:4293

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
try_to_wake_up+0x5a/0x10b0 kernel/sched/core.c:4112
__wake_up_common+0x28e/0x4d0 kernel/sched/wait.c:107
__wake_up_common_lock kernel/sched/wait.c:138 [inline]
__wake_up+0x121/0x1a0 kernel/sched/wait.c:160
tty_port_default_wakeup+0x9e/0xf0 drivers/tty/tty_port.c:71
serial8250_tx_chars+0x615/0x800 drivers/tty/serial/8250/8250_port.c:1854
serial8250_handle_irq+0x554/0x720 drivers/tty/serial/8250/8250_port.c:1961
serial8250_default_handle_irq+0xb4/0x1a0 drivers/tty/serial/8250/8250_port.c:1981
serial8250_interrupt+0x9b/0x1c0 drivers/tty/serial/8250/8250_core.c:126
__handle_irq_event_percpu+0x293/0xa50 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x87/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x242/0xb20 kernel/irq/chip.c:819
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq arch/x86/kernel/irq.c:233 [inline]
__common_interrupt+0xd7/0x1e0 arch/x86/kernel/irq.c:252
common_interrupt+0xb0/0xd0 arch/x86/kernel/irq.c:242
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:682
__sanitizer_cov_trace_const_cmp8+0x0/0x80
mas_logical_pivot lib/maple_tree.c:749 [inline]
mas_validate_gaps lib/maple_tree.c:6975 [inline]
mt_validate+0x30ca/0x4c60 lib/maple_tree.c:7246
validate_mm_mt+0xd9/0x420 mm/mmap.c:295
validate_mm+0xe1/0x2e0 mm/mmap.c:332
__vma_adjust+0x178c/0x1d00 mm/mmap.c:879
vma_adjust include/linux/mm.h:2810 [inline]
__split_vma+0x3a2/0x4f0 mm/mmap.c:-1
do_mas_align_munmap+0x399/0x12d0 mm/mmap.c:2480
do_mas_munmap+0x240/0x2b0 mm/mmap.c:2650
__mmap_region mm/mmap.c:2698 [inline]
mmap_region+0x7ab/0x1c50 mm/mmap.c:2916
do_mmap+0x9ce/0x10d0 mm/mmap.c:1436
vm_mmap_pgoff+0x1c1/0x2d0 mm/util.c:520
ksys_mmap_pgoff+0x4bf/0x720 mm/mmap.c:1482
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #2 (&tty->write_wait){-...}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:137 [inline]
__wake_up+0x107/0x1a0 kernel/sched/wait.c:160
tty_port_default_wakeup+0x9e/0xf0 drivers/tty/tty_port.c:71
serial8250_tx_chars+0x615/0x800 drivers/tty/serial/8250/8250_port.c:1854
serial8250_handle_irq+0x554/0x720 drivers/tty/serial/8250/8250_port.c:1961
serial8250_default_handle_irq+0xb4/0x1a0 drivers/tty/serial/8250/8250_port.c:1981
serial8250_interrupt+0x9b/0x1c0 drivers/tty/serial/8250/8250_core.c:126
__handle_irq_event_percpu+0x293/0xa50 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x87/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x242/0xb20 kernel/irq/chip.c:819
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq arch/x86/kernel/irq.c:233 [inline]
__common_interrupt+0xd7/0x1e0 arch/x86/kernel/irq.c:252
common_interrupt+0xb0/0xd0 arch/x86/kernel/irq.c:242
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:682
native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
default_idle+0xb/0x10 arch/x86/kernel/process.c:741
default_idle_call+0x84/0xc0 kernel/sched/idle.c:109
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x3a2/0x680 kernel/sched/idle.c:323
cpu_startup_entry+0x3f/0x60 kernel/sched/idle.c:422
rest_init+0x2dc/0x300 init/main.c:745
start_kernel+0x0/0x53c init/main.c:904
start_kernel+0x493/0x53c init/main.c:1151
secondary_startup_64_no_verify+0xcf/0xdb

-> #1 (&port_lock_key){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
serial8250_console_write+0x17d/0x18b0 drivers/tty/serial/8250/8250_port.c:3438
call_console_driver kernel/printk/printk.c:1977 [inline]
console_emit_next_record+0x795/0xb50 kernel/printk/printk.c:2777
console_flush_all kernel/printk/printk.c:-1 [inline]
console_unlock+0x223/0x630 kernel/printk/printk.c:2906
vprintk_emit+0x4b3/0x6a0 kernel/printk/printk.c:2303
_printk+0xda/0x130 kernel/printk/printk.c:2328
register_console+0x6bd/0x9b0 kernel/printk/printk.c:3269
univ8250_console_init+0x41/0x43 drivers/tty/serial/8250/8250_core.c:687
console_init+0x1bc/0x78e kernel/printk/printk.c:3359
start_kernel+0x306/0x53c init/main.c:1087
secondary_startup_64_no_verify+0xcf/0xdb

-> #0 (console_owner){..-.}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3095 [inline]
check_prevs_add kernel/locking/lockdep.c:3214 [inline]
validate_chain kernel/locking/lockdep.c:3830 [inline]
__lock_acquire+0x2d18/0x7c40 kernel/locking/lockdep.c:5063
lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5676
console_lock_spinning_enable kernel/printk/printk.c:1818 [inline]
console_emit_next_record+0x6b0/0xb50 kernel/printk/printk.c:2774
console_flush_all kernel/printk/printk.c:-1 [inline]
console_unlock+0x223/0x630 kernel/printk/printk.c:2906
vprintk_emit+0x4b3/0x6a0 kernel/printk/printk.c:2303
_printk+0xda/0x130 kernel/printk/printk.c:2328
panic+0x269/0x710 kernel/panic.c:333
check_panic_on_warn kernel/panic.c:235 [inline]
__warn+0x2f8/0x4f0 kernel/panic.c:680
__report_bug lib/bug.c:199 [inline]
report_bug+0x2ba/0x4f0 lib/bug.c:219
handle_bug+0x3a/0x70 arch/x86/kernel/traps.c:324
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:345
asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:606
__set_task_frozen+0x1e9/0x290 kernel/freezer.c:129
task_call_func+0x19e/0x260 kernel/sched/core.c:4308
__freeze_task kernel/freezer.c:139 [inline]
freeze_task+0x213/0x3a0 kernel/freezer.c:158
try_to_freeze_tasks+0x190/0x600 kernel/power/process.c:54
freeze_processes+0xc5/0x1e0 kernel/power/process.c:137
suspend_freeze_processes kernel/power/power.h:257 [inline]
suspend_prepare kernel/power/suspend.c:372 [inline]
enter_state kernel/power/suspend.c:589 [inline]
pm_suspend+0x289/0x9a0 kernel/power/suspend.c:626
state_store+0x202/0x290 kernel/power/main.c:639
kernfs_fop_write_iter+0x3a0/0x520 fs/kernfs/file.c:352
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x482/0x9a0 fs/read_write.c:584
ksys_write+0x14d/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2

other info that might help us debug this:

Chain exists of:
console_owner --> &tty->write_wait --> &p->pi_lock

Possible unsafe locking scenario:

CPU0 CPU1
---- ----
lock(&p->pi_lock);
lock(&tty->write_wait);
lock(&p->pi_lock);
lock(console_owner);

*** DEADLOCK ***

9 locks held by syz.4.451/6054:
#0: ffff888023bdc0e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1038
#1: ffff88802ebca460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x270/0x9a0 fs/read_write.c:580
#2: ffff8880565df888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1d8/0x520 fs/kernfs/file.c:343
#3: ffff8881401d91d8 (kn->active#69){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
#3: ffff8881401d91d8 (kn->active#69){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x232/0x520 fs/kernfs/file.c:344
#4: ffffffff8c9e2e28 (system_transition_mutex){+.+.}-{3:3}, at: enter_state kernel/power/suspend.c:575 [inline]
#4: ffffffff8c9e2e28 (system_transition_mutex){+.+.}-{3:3}, at: pm_suspend+0x3bc/0x9a0 kernel/power/suspend.c:626
#5: ffffffff8c80a058 (tasklist_lock){.+.+}-{2:2}, at: try_to_freeze_tasks+0xe5/0x600 kernel/power/process.c:52
#6: ffffffff8cb40658 (freezer_lock){....}-{2:2}, at: freeze_task+0x7c/0x3a0 kernel/freezer.c:157
#7: ffff88802780a818 (&p->pi_lock){-.-.}-{2:2}, at: task_call_func+0x3f/0x260 kernel/sched/core.c:4293
#8: ffffffff8cb21e20 (console_lock){+.+.}-{0:0}, at: _printk+0xda/0x130 kernel/printk/printk.c:2328

stack backtrace:
CPU: 0 PID: 6054 Comm: syz.4.451 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<TASK>
dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
check_noncircular+0x296/0x330 kernel/locking/lockdep.c:2170
check_prev_add kernel/locking/lockdep.c:3095 [inline]
check_prevs_add kernel/locking/lockdep.c:3214 [inline]
validate_chain kernel/locking/lockdep.c:3830 [inline]
__lock_acquire+0x2d18/0x7c40 kernel/locking/lockdep.c:5063
lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5676
console_lock_spinning_enable kernel/printk/printk.c:1818 [inline]
console_emit_next_record+0x6b0/0xb50 kernel/printk/printk.c:2774
console_flush_all kernel/printk/printk.c:-1 [inline]
console_unlock+0x223/0x630 kernel/printk/printk.c:2906
vprintk_emit+0x4b3/0x6a0 kernel/printk/printk.c:2303
_printk+0xda/0x130 kernel/printk/printk.c:2328
panic+0x269/0x710 kernel/panic.c:333
check_panic_on_warn kernel/panic.c:235 [inline]
__warn+0x2f8/0x4f0 kernel/panic.c:680
__report_bug lib/bug.c:199 [inline]
report_bug+0x2ba/0x4f0 lib/bug.c:219
handle_bug+0x3a/0x70 arch/x86/kernel/traps.c:324
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:345
asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:606
RIP: 0010:__set_task_frozen+0x1e9/0x290 kernel/freezer.c:129
Code: 68 c7 03 00 80 00 00 bd 00 80 00 00 89 e8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a3 83 11 00 0f 0b e9 2c ff ff ff e8 97 83 11 00 <0f> 0b eb bf 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 38 fe ff ff 48 89
RSP: 0018:ffffc900052f7a50 EFLAGS: 00010087
RAX: ffffffff8170aa89 RBX: ffff888027809e18 RCX: 0000000000080000
RDX: ffffc9000e969000 RSI: 000000000004249e RDI: 000000000004249f
RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000a5ef2c R12: 0000000000000000
R13: 1ffff11004f013c3 R14: ffff88802780a8d8 R15: dffffc0000000000
task_call_func+0x19e/0x260 kernel/sched/core.c:4308
__freeze_task kernel/freezer.c:139 [inline]
freeze_task+0x213/0x3a0 kernel/freezer.c:158
try_to_freeze_tasks+0x190/0x600 kernel/power/process.c:54
freeze_processes+0xc5/0x1e0 kernel/power/process.c:137
suspend_freeze_processes kernel/power/power.h:257 [inline]
suspend_prepare kernel/power/suspend.c:372 [inline]
enter_state kernel/power/suspend.c:589 [inline]
pm_suspend+0x289/0x9a0 kernel/power/suspend.c:626
state_store+0x202/0x290 kernel/power/main.c:639
kernfs_fop_write_iter+0x3a0/0x520 fs/kernfs/file.c:352
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x482/0x9a0 fs/read_write.c:584
ksys_write+0x14d/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7faf3879e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faf39612028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007faf38a25fa0 RCX: 00007faf3879e019
RDX: 0000000000000009 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007faf3883500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faf38a26038 R14: 00007faf38a25fa0 R15: 00007fffc2865b48
</TASK>
CPU: 0 PID: 6054 Comm: syz.4.451 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<TASK>
dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
panic+0x2d3/0x710 kernel/panic.c:339
check_panic_on_warn kernel/panic.c:235 [inline]
__warn+0x2f8/0x4f0 kernel/panic.c:680
__report_bug lib/bug.c:199 [inline]
report_bug+0x2ba/0x4f0 lib/bug.c:219
handle_bug+0x3a/0x70 arch/x86/kernel/traps.c:324
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:345
asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:606
RIP: 0010:__set_task_frozen+0x1e9/0x290 kernel/freezer.c:129
Code: 68 c7 03 00 80 00 00 bd 00 80 00 00 89 e8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a3 83 11 00 0f 0b e9 2c ff ff ff e8 97 83 11 00 <0f> 0b eb bf 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 38 fe ff ff 48 89
RSP: 0018:ffffc900052f7a50 EFLAGS: 00010087
RAX: ffffffff8170aa89 RBX: ffff888027809e18 RCX: 0000000000080000
RDX: ffffc9000e969000 RSI: 000000000004249e RDI: 000000000004249f
RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000a5ef2c R12: 0000000000000000
R13: 1ffff11004f013c3 R14: ffff88802780a8d8 R15: dffffc0000000000
task_call_func+0x19e/0x260 kernel/sched/core.c:4308
__freeze_task kernel/freezer.c:139 [inline]
freeze_task+0x213/0x3a0 kernel/freezer.c:158
try_to_freeze_tasks+0x190/0x600 kernel/power/process.c:54
freeze_processes+0xc5/0x1e0 kernel/power/process.c:137
suspend_freeze_processes kernel/power/power.h:257 [inline]
suspend_prepare kernel/power/suspend.c:372 [inline]
enter_state kernel/power/suspend.c:589 [inline]
pm_suspend+0x289/0x9a0 kernel/power/suspend.c:626
state_store+0x202/0x290 kernel/power/main.c:639
kernfs_fop_write_iter+0x3a0/0x520 fs/kernfs/file.c:352
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x482/0x9a0 fs/read_write.c:584
ksys_write+0x14d/0x260 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7faf3879e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faf39612028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007faf38a25fa0 RCX: 00007faf3879e019
RDX: 0000000000000009 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007faf3883500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faf38a26038 R14: 00007faf38a25fa0 R15: 00007fffc2865b48
</TASK>
Shutting down cpus with NMI
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