------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.3.23/6064 is trying to acquire lock:
ffffffff8e0d56a0 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable+0x61/0x80 kernel/printk/printk.c:1897
but task is already holding lock:
ffff8880b843a958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:647 [inline]
ffff8880b843a958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:632
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:639
raw_spin_rq_lock kernel/sched/sched.h:1556 [inline]
task_rq_lock+0xcf/0x490 kernel/sched/core.c:739
cgroup_move_task+0x81/0x2a0 kernel/sched/psi.c:1170
css_set_move_task+0x288/0x5f0 kernel/cgroup/cgroup.c:948
cgroup_post_fork+0x201/0x9e0 kernel/cgroup/cgroup.c:6908
copy_process+0x6037/0x7680 kernel/fork.c:2425
kernel_clone+0xfc/0x910 kernel/fork.c:2610
user_mode_thread+0xc8/0x110 kernel/fork.c:2686
rest_init+0x23/0x2b0 init/main.c:722
start_kernel+0x3f6/0x4d0 init/main.c:1111
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
-> #3 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:557 [inline]
try_to_wake_up+0xb7/0x1870 kernel/sched/core.c:4109
__wake_up_common+0x135/0x1f0 kernel/sched/wait.c:108
__wake_up_common_lock kernel/sched/wait.c:125 [inline]
__wake_up+0x31/0x60 kernel/sched/wait.c:146
tty_port_default_wakeup+0x47/0x60 drivers/tty/tty_port.c:67
serial8250_tx_chars+0x68e/0x860 drivers/tty/serial/8250/8250_port.c:1719
serial8250_handle_irq+0x761/0xcb0 drivers/tty/serial/8250/8250_port.c:1827
serial8250_default_handle_irq+0x9e/0x270 drivers/tty/serial/8250/8250_port.c:1846
serial8250_interrupt+0xf8/0x1d0 drivers/tty/serial/8250/8250_core.c:82
__handle_irq_event_percpu+0x236/0x890 kernel/irq/handle.c:203
handle_irq_event_percpu kernel/irq/handle.c:240 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:257
handle_edge_irq+0x3ca/0x9e0 kernel/irq/chip.c:855
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:254 [inline]
call_irq_handler arch/x86/kernel/irq.c:310 [inline]
__common_interrupt+0xd0/0x2f0 arch/x86/kernel/irq.c:325
common_interrupt+0xba/0xe0 arch/x86/kernel/irq.c:318
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:81
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:190 [inline]
do_idle+0x38d/0x500 kernel/sched/idle.c:330
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428
rest_init+0x16b/0x2b0 init/main.c:757
start_kernel+0x3f6/0x4d0 init/main.c:1111
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
-> #2 (&tty->write_wait){-...}-{3:3}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:124 [inline]
__wake_up+0x1c/0x60 kernel/sched/wait.c:146
tty_port_default_wakeup+0x47/0x60 drivers/tty/tty_port.c:67
serial8250_tx_chars+0x68e/0x860 drivers/tty/serial/8250/8250_port.c:1719
serial8250_handle_irq+0x761/0xcb0 drivers/tty/serial/8250/8250_port.c:1827
serial8250_default_handle_irq+0x9e/0x270 drivers/tty/serial/8250/8250_port.c:1846
serial8250_interrupt+0xf8/0x1d0 drivers/tty/serial/8250/8250_core.c:82
__handle_irq_event_percpu+0x236/0x890 kernel/irq/handle.c:203
handle_irq_event_percpu kernel/irq/handle.c:240 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:257
handle_edge_irq+0x3ca/0x9e0 kernel/irq/chip.c:855
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:254 [inline]
call_irq_handler arch/x86/kernel/irq.c:310 [inline]
__common_interrupt+0xd0/0x2f0 arch/x86/kernel/irq.c:325
common_interrupt+0xba/0xe0 arch/x86/kernel/irq.c:318
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:81
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:190 [inline]
do_idle+0x38d/0x500 kernel/sched/idle.c:330
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428
rest_init+0x16b/0x2b0 init/main.c:757
start_kernel+0x3f6/0x4d0 init/main.c:1111
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
-> #1 (&port_lock_key){-...}-{3:3}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
uart_port_lock_irqsave include/linux/serial_core.h:717 [inline]
serial8250_console_write+0x181/0x1890 drivers/tty/serial/8250/8250_port.c:3301
console_emit_next_record kernel/printk/printk.c:3111 [inline]
console_flush_all+0x801/0xc60 kernel/printk/printk.c:3199
__console_flush_and_unlock kernel/printk/printk.c:3258 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3298
vprintk_emit+0x3d7/0x680 kernel/printk/printk.c:2423
_printk+0xc7/0x100 kernel/printk/printk.c:2448
register_console+0xc27/0x11b0 kernel/printk/printk.c:4099
univ8250_console_init+0x5f/0x90 drivers/tty/serial/8250/8250_core.c:511
console_init+0x152/0x600 kernel/printk/printk.c:4298
start_kernel+0x29f/0x4d0 init/main.c:1048
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
-> #0 (console_owner){-...}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x1542/0x22f0 kernel/locking/lockdep.c:5237
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x179/0x330 kernel/locking/lockdep.c:5825
console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1897
console_emit_next_record kernel/printk/printk.c:3105 [inline]
console_flush_all+0x7aa/0xc60 kernel/printk/printk.c:3199
__console_flush_and_unlock kernel/printk/printk.c:3258 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3298
vprintk_emit+0x3d7/0x680 kernel/printk/printk.c:2423
_printk+0xc7/0x100 kernel/printk/printk.c:2448
__report_bug+0x3a6/0x520 lib/bug.c:239
report_bug+0xb2/0x220 lib/bug.c:277
handle_bug+0x127/0x260 arch/x86/kernel/traps.c:435
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:489
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
lockdep_assert_rq_held kernel/sched/sched.h:1547 [inline]
lockdep_assert_rq_held kernel/sched/sched.h:1545 [inline]
update_rq_clock+0x34a/0xc70 kernel/sched/core.c:837
pick_next_task kernel/sched/core.c:6086 [inline]
__schedule+0x2035/0x5de0 kernel/sched/core.c:6803
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7188
irqentry_exit+0x36/0x90 kernel/entry/common.c:211
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
stack_trace_consume_entry+0xbb/0x170 kernel/stacktrace.c:93
arch_stack_walk+0x88/0x100 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:311
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1394 [inline]
free_unref_folios+0xa17/0x1600 mm/page_alloc.c:2958
folios_put_refs+0x4be/0x750 mm/swap.c:1002
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x58f/0x1140 mm/shmem.c:1119
shmem_truncate_range mm/shmem.c:1231 [inline]
shmem_evict_inode+0x3a1/0xbe0 mm/shmem.c:1359
evict+0x3c2/0xad0 fs/inode.c:837
iput_final fs/inode.c:1951 [inline]
iput.part.0+0x621/0x1190 fs/inode.c:2003
iput+0x35/0x40 fs/inode.c:1966
dentry_unlink_inode+0x29c/0x480 fs/dcache.c:467
__dentry_kill+0x1d0/0x600 fs/dcache.c:670
dput.part.0+0x4b1/0x9b0 fs/dcache.c:912
dput+0x1f/0x30 fs/dcache.c:902
__fput+0x51c/0xb70 fs/file_table.c:476
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x877/0x2bc0 kernel/exit.c:972
do_group_exit+0xd3/0x2a0 kernel/exit.c:1113
get_signal+0x2671/0x26d0 kernel/signal.c:3034
arch_do_signal_or_restart+0x8f/0x790 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
irqentry_exit_to_user_mode+0x18e/0x370 kernel/entry/common.c:73
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
other info that might help us debug this:
Chain exists of:
console_owner --> &p->pi_lock --> &rq->__lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rq->__lock);
lock(&p->pi_lock);
lock(&rq->__lock);
lock(console_owner);
*** DEADLOCK ***
3 locks held by syz.3.23/6064:
#0: ffff8880b843a958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:647 [inline]
#0: ffff8880b843a958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:632
#1: ffffffff8e1b5ae0 (console_lock){+.+.}-{0:0}, at: _printk+0xc7/0x100 kernel/printk/printk.c:2448
#2: ffffffff8e1b5b50 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
#2: ffffffff8e1b5b50 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:335 [inline]
#2: ffffffff8e1b5b50 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:289 [inline]
#2: ffffffff8e1b5b50 (console_srcu){....}-{0:0}, at: console_flush_all+0x158/0xc60 kernel/printk/printk.c:3176
stack backtrace:
CPU: 0 UID: 0 PID: 6064 Comm: syz.3.23 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_circular_bug+0x2db/0x410 kernel/locking/lockdep.c:2043
check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3165 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x1542/0x22f0 kernel/locking/lockdep.c:5237
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x179/0x330 kernel/locking/lockdep.c:5825
console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1897
console_emit_next_record kernel/printk/printk.c:3105 [inline]
console_flush_all+0x7aa/0xc60 kernel/printk/printk.c:3199
__console_flush_and_unlock kernel/printk/printk.c:3258 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3298
vprintk_emit+0x3d7/0x680 kernel/printk/printk.c:2423
_printk+0xc7/0x100 kernel/printk/printk.c:2448
__report_bug+0x3a6/0x520 lib/bug.c:239
report_bug+0xb2/0x220 lib/bug.c:277
handle_bug+0x127/0x260 arch/x86/kernel/traps.c:435
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:489
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1547 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1545 [inline]
RIP: 0010:update_rq_clock+0x34a/0xc70 kernel/sched/core.c:837
Code: ab 48 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc a8 04 0f 84 9c fd ff ff 90 0f 0b 90 e9 93 fd ff ff 90 <0f> 0b 90 e9 4f fd ff ff 48 8d bb 18 0e 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000b286c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b853a940 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8d8785ac RDI: ffffffff8bd1bd00
RBP: 0000000000000001 R08: ffff8880b843b448 R09: fffffbfff20cb9fa
R10: ffffffff9065cfd7 R11: 0000000000000001 R12: ffffffff90660034
R13: ffffffff8db359e0 R14: ffff88801d2dbd00 R15: ffff8880b853a940
pick_next_task kernel/sched/core.c:6086 [inline]
__schedule+0x2035/0x5de0 kernel/sched/core.c:6803
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7188
irqentry_exit+0x36/0x90 kernel/entry/common.c:211
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:stack_trace_consume_entry+0xbb/0x170 kernel/stacktrace.c:93
Code: 00 00 8b 43 0c 85 c0 75 57 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 9a 00 00 00 8d 45 01 89 43 10 <48> 8b 03 48 8d 2c e8 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1
RSP: 0018:ffffc9000b286fd8 EFLAGS: 00000246
RAX: 0000000000000010 RBX: ffffc9000b2870b8 RCX: ffffc9000b286f4c
RDX: 1ffff92001650e17 RSI: ffffffff81801fa1 RDI: ffffc9000b2870c4
RBP: 000000000000000f R08: 0000000000000001 R09: 00000000ffffffff
R10: ffff8880311ac830 R11: 0000000000007c8f R12: ffffffff81a7e140
R13: ffffc9000b2870b8 R14: 0000000000000000 R15: ffff8880311abd00
arch_stack_walk+0x88/0x100 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:311
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1394 [inline]
free_unref_folios+0xa17/0x1600 mm/page_alloc.c:2958
folios_put_refs+0x4be/0x750 mm/swap.c:1002
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x58f/0x1140 mm/shmem.c:1119
shmem_truncate_range mm/shmem.c:1231 [inline]
shmem_evict_inode+0x3a1/0xbe0 mm/shmem.c:1359
evict+0x3c2/0xad0 fs/inode.c:837
iput_final fs/inode.c:1951 [inline]
iput.part.0+0x621/0x1190 fs/inode.c:2003
iput+0x35/0x40 fs/inode.c:1966
dentry_unlink_inode+0x29c/0x480 fs/dcache.c:467
__dentry_kill+0x1d0/0x600 fs/dcache.c:670
dput.part.0+0x4b1/0x9b0 fs/dcache.c:912
dput+0x1f/0x30 fs/dcache.c:902
__fput+0x51c/0xb70 fs/file_table.c:476
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x877/0x2bc0 kernel/exit.c:972
do_group_exit+0xd3/0x2a0 kernel/exit.c:1113
get_signal+0x2671/0x26d0 kernel/signal.c:3034
arch_do_signal_or_restart+0x8f/0x790 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
irqentry_exit_to_user_mode+0x18e/0x370 kernel/entry/common.c:73
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000000000000adb EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f99d9be6090 RCX: 00007f99d998f7c9
RDX: 0000000000000000 RSI: 0000000000000ad3 RDI: 0000000000007fff
RBP: 00007f99d9a13f91 R08: 0000000008000004 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f99d9be6128 R14: 00007f99d9be6090 R15: 00007fff946b8638
WARNING: kernel/sched/sched.h:1547 at lockdep_assert_rq_held kernel/sched/sched.h:1547 [inline], CPU#0: syz.3.23/6064
WARNING: kernel/sched/sched.h:1547 at lockdep_assert_rq_held kernel/sched/sched.h:1545 [inline], CPU#0: syz.3.23/6064
WARNING: kernel/sched/sched.h:1547 at update_rq_clock+0x34a/0xc70 kernel/sched/core.c:837, CPU#0: syz.3.23/6064
Modules linked in:
CPU: 0 UID: 0 PID: 6064 Comm: syz.3.23 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1547 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1545 [inline]
RIP: 0010:update_rq_clock+0x34a/0xc70 kernel/sched/core.c:837
Code: ab 48 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc a8 04 0f 84 9c fd ff ff 90 0f 0b 90 e9 93 fd ff ff 90 <0f> 0b 90 e9 4f fd ff ff 48 8d bb 18 0e 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000b286c78 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b853a940 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8d8785ac RDI: ffffffff8bd1bd00
RBP: 0000000000000001 R08: ffff8880b843b448 R09: fffffbfff20cb9fa
R10: ffffffff9065cfd7 R11: 0000000000000001 R12: ffffffff90660034
R13: ffffffff8db359e0 R14: ffff88801d2dbd00 R15: ffff8880b853a940
FS: 0000000000000000(0000) GS:ffff888124ba8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000d7000 CR3: 0000000075e8a000 CR4: 00000000003526f0
Call Trace:
pick_next_task kernel/sched/core.c:6086 [inline]
__schedule+0x2035/0x5de0 kernel/sched/core.c:6803
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7188
irqentry_exit+0x36/0x90 kernel/entry/common.c:211
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:stack_trace_consume_entry+0xbb/0x170 kernel/stacktrace.c:93
Code: 00 00 8b 43 0c 85 c0 75 57 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 9a 00 00 00 8d 45 01 89 43 10 <48> 8b 03 48 8d 2c e8 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1
RSP: 0018:ffffc9000b286fd8 EFLAGS: 00000246
RAX: 0000000000000010 RBX: ffffc9000b2870b8 RCX: ffffc9000b286f4c
RDX: 1ffff92001650e17 RSI: ffffffff81801fa1 RDI: ffffc9000b2870c4
RBP: 000000000000000f R08: 0000000000000001 R09: 00000000ffffffff
R10: ffff8880311ac830 R11: 0000000000007c8f R12: ffffffff81a7e140
R13: ffffc9000b2870b8 R14: 0000000000000000 R15: ffff8880311abd00
arch_stack_walk+0x88/0x100 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:311
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1394 [inline]
free_unref_folios+0xa17/0x1600 mm/page_alloc.c:2958
folios_put_refs+0x4be/0x750 mm/swap.c:1002
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x58f/0x1140 mm/shmem.c:1119
shmem_truncate_range mm/shmem.c:1231 [inline]
shmem_evict_inode+0x3a1/0xbe0 mm/shmem.c:1359
evict+0x3c2/0xad0 fs/inode.c:837
iput_final fs/inode.c:1951 [inline]
iput.part.0+0x621/0x1190 fs/inode.c:2003
iput+0x35/0x40 fs/inode.c:1966
dentry_unlink_inode+0x29c/0x480 fs/dcache.c:467
__dentry_kill+0x1d0/0x600 fs/dcache.c:670
dput.part.0+0x4b1/0x9b0 fs/dcache.c:912
dput+0x1f/0x30 fs/dcache.c:902
__fput+0x51c/0xb70 fs/file_table.c:476
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x877/0x2bc0 kernel/exit.c:972
do_group_exit+0xd3/0x2a0 kernel/exit.c:1113
get_signal+0x2671/0x26d0 kernel/signal.c:3034
arch_do_signal_or_restart+0x8f/0x790 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
irqentry_exit_to_user_mode+0x18e/0x370 kernel/entry/common.c:73
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000000000000adb EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f99d9be6090 RCX: 00007f99d998f7c9
RDX: 0000000000000000 RSI: 0000000000000ad3 RDI: 0000000000007fff
RBP: 00007f99d9a13f91 R08: 0000000008000004 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f99d9be6128 R14: 00007f99d9be6090 R15: 00007fff946b8638
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 8b 43 0c mov 0xc(%rbx),%eax
5: 85 c0 test %eax,%eax
7: 75 57 jne 0x60
9: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
10: fc ff df
13: 48 89 da mov %rbx,%rdx
16: 48 c1 ea 03 shr $0x3,%rdx
1a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
1e: 0f 85 9a 00 00 00 jne 0xbe
24: 8d 45 01 lea 0x1(%rbp),%eax
27: 89 43 10 mov %eax,0x10(%rbx)
* 2a: 48 8b 03 mov (%rbx),%rax <-- trapping instruction
2d: 48 8d 2c e8 lea (%rax,%rbp,8),%rbp
31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
38: fc ff df
3b: 48 89 ea mov %rbp,%rdx
3e: 48 rex.W
3f: c1 .byte 0xc1