------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.16.0-syzkaller-08685-g260f6f4fda93 #0 Not tainted
------------------------------------------------------
syz.4.2722/25648 is trying to acquire lock:
ffffffff8e4ce520 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable+0x9f/0xd0 kernel/printk/printk.c:1924

but task is already holding lock:
ffff8880b843a458 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:644 [inline]
ffff8880b843a458 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:629

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:636
       raw_spin_rq_lock kernel/sched/sched.h:1522 [inline]
       task_rq_lock+0xcf/0x490 kernel/sched/core.c:736
       cgroup_move_task+0x81/0x2a0 kernel/sched/psi.c:1174
       css_set_move_task+0x288/0x5f0 kernel/cgroup/cgroup.c:918
       cgroup_post_fork+0x201/0x9e0 kernel/cgroup/cgroup.c:6759
       copy_process+0x5cfa/0x7690 kernel/fork.c:2413
       kernel_clone+0xfc/0x930 kernel/fork.c:2599
       user_mode_thread+0xc7/0x110 kernel/fork.c:2677
       rest_init+0x23/0x2b0 init/main.c:709
       start_kernel+0x3ee/0x4d0 init/main.c:1097
       x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:307
       x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:288
       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+0xb2/0x1680 kernel/sched/core.c:4216
       __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
       n_hdlc_send_frames+0x176/0x490 drivers/tty/n_hdlc.c:307
       process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
       process_scheduled_works kernel/workqueue.c:3321 [inline]
       worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
       kthread+0x3c2/0x780 kernel/kthread.c:464
       ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

-> #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+0x2a/0x40 drivers/tty/tty_port.c:69
       serial8250_tx_chars+0x68e/0x860 drivers/tty/serial/8250/8250_port.c:1728
       serial8250_handle_irq+0x761/0xcb0 drivers/tty/serial/8250/8250_port.c:1836
       serial8250_default_handle_irq+0x9a/0x250 drivers/tty/serial/8250/8250_port.c:1856
       serial8250_interrupt+0xf8/0x1b0 drivers/tty/serial/8250/8250_core.c:82
       __handle_irq_event_percpu+0x22c/0x7d0 kernel/irq/handle.c:158
       handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
       handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
       handle_edge_irq+0x3b3/0x9d0 kernel/irq/chip.c:849
       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:266 [inline]
       __common_interrupt+0xdf/0x250 arch/x86/kernel/irq.c:292
       common_interrupt+0xba/0xe0 arch/x86/kernel/irq.c:285
       asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
       _raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
       spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
       uart_port_unlock_irqrestore include/linux/serial_core.h:788 [inline]
       uart_port_unlock_deref drivers/tty/serial/serial_core.c:91 [inline]
       uart_port_unlock_deref drivers/tty/serial/serial_core.c:88 [inline]
       uart_write+0x2a4/0xb30 drivers/tty/serial/serial_core.c:637
       process_output_block drivers/tty/n_tty.c:561 [inline]
       n_tty_write+0x40f/0x1160 drivers/tty/n_tty.c:2377
       iterate_tty_write drivers/tty/tty_io.c:1006 [inline]
       file_tty_write.constprop.0+0x504/0x9b0 drivers/tty/tty_io.c:1081
       tty_write drivers/tty/tty_io.c:1102 [inline]
       redirected_tty_write drivers/tty/tty_io.c:1125 [inline]
       redirected_tty_write+0xd4/0x150 drivers/tty/tty_io.c:1105
       new_sync_write fs/read_write.c:593 [inline]
       vfs_write+0x6c7/0x1150 fs/read_write.c:686
       ksys_write+0x12a/0x250 fs/read_write.c:738
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #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:3355
       console_emit_next_record kernel/printk/printk.c:3138 [inline]
       console_flush_all+0x801/0xc60 kernel/printk/printk.c:3226
       __console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
       console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
       vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
       _printk+0xc7/0x100 kernel/printk/printk.c:2475
       register_console+0xc2d/0x11b0 kernel/printk/printk.c:4125
       univ8250_console_init+0x5f/0x90 drivers/tty/serial/8250/8250_core.c:516
       console_init+0x14f/0x680 kernel/printk/printk.c:4323
       start_kernel+0x29f/0x4d0 init/main.c:1035
       x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:307
       x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:288
       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+0x126f/0x1c90 kernel/locking/lockdep.c:5237
       lock_acquire kernel/locking/lockdep.c:5868 [inline]
       lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825
       console_lock_spinning_enable+0xb0/0xd0 kernel/printk/printk.c:1924
       console_emit_next_record kernel/printk/printk.c:3132 [inline]
       console_flush_all+0x7aa/0xc60 kernel/printk/printk.c:3226
       __console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
       console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
       vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
       _printk+0xc7/0x100 kernel/printk/printk.c:2475
       __report_bug lib/bug.c:191 [inline]
       report_bug+0x435/0x580 lib/bug.c:215
       handle_bug+0x184/0x210 arch/x86/kernel/traps.c:338
       exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:392
       asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
       lockdep_assert_rq_held kernel/sched/sched.h:1513 [inline]
       lockdep_assert_rq_held kernel/sched/sched.h:1511 [inline]
       update_rq_clock+0x34a/0xc70 kernel/sched/core.c:834
       pick_next_task kernel/sched/core.c:6190 [inline]
       __schedule+0x27fc/0x5df0 kernel/sched/core.c:6902
       preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7288
       irqentry_exit+0x36/0x90 kernel/entry/common.c:197
       asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
       lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5833
       rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
       rcu_read_lock include/linux/rcupdate.h:841 [inline]
       class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
       unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
       __unwind_start+0x45f/0x7f0 arch/x86/kernel/unwind_orc.c:758
       unwind_start arch/x86/include/asm/unwind.h:64 [inline]
       arch_stack_walk+0x73/0x100 arch/x86/kernel/stacktrace.c:24
       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:308
       reset_page_owner include/linux/page_owner.h:25 [inline]
       free_pages_prepare mm/page_alloc.c:1248 [inline]
       free_unref_folios+0xa65/0x1800 mm/page_alloc.c:2763
       folios_put_refs+0x56f/0x740 mm/swap.c:992
       folio_batch_release include/linux/pagevec.h:101 [inline]
       shmem_undo_range+0x58f/0x1150 mm/shmem.c:1125
       shmem_truncate_range mm/shmem.c:1237 [inline]
       shmem_evict_inode+0x3a1/0xbe0 mm/shmem.c:1365
       evict+0x3e3/0x920 fs/inode.c:810
       iput_final fs/inode.c:1897 [inline]
       iput fs/inode.c:1923 [inline]
       iput+0x521/0x880 fs/inode.c:1909
       dentry_unlink_inode+0x29c/0x480 fs/dcache.c:466
       __dentry_kill+0x1d0/0x600 fs/dcache.c:669
       dput.part.0+0x4b1/0x9b0 fs/dcache.c:911
       dput+0x1f/0x30 fs/dcache.c:901
       __fput+0x51c/0xb70 fs/file_table.c:476
       task_work_run+0x150/0x240 kernel/task_work.c:227
       exit_task_work include/linux/task_work.h:40 [inline]
       do_exit+0x86f/0x2bf0 kernel/exit.c:964
       do_group_exit+0xd3/0x2a0 kernel/exit.c:1105
       get_signal+0x2673/0x26d0 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:224 [inline]
       irqentry_exit_to_user_mode+0x12a/0x270 kernel/entry/common.c:73
       asm_exc_stack_segment+0x26/0x30 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 ***

4 locks held by syz.4.2722/25648:
 #0: ffffffff8e5c0ee0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8e5c0ee0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #0: ffffffff8e5c0ee0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
 #0: ffffffff8e5c0ee0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xbd/0x20a0 arch/x86/kernel/unwind_orc.c:479
 #1: ffff8880b843a458 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:644 [inline]
 #1: ffff8880b843a458 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:629
 #2: ffffffff8e5ae960 (console_lock){+.+.}-{0:0}, at: _printk+0xc7/0x100 kernel/printk/printk.c:2475
 #3: ffffffff8e5ae9d0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
 #3: ffffffff8e5ae9d0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:319 [inline]
 #3: ffffffff8e5ae9d0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
 #3: ffffffff8e5ae9d0 (console_srcu){....}-{0:0}, at: console_flush_all+0x158/0xc60 kernel/printk/printk.c:3203

stack backtrace:
CPU: 0 UID: 0 PID: 25648 Comm: syz.4.2722 Not tainted 6.16.0-syzkaller-08685-g260f6f4fda93 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2043
 check_noncircular+0x14c/0x170 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+0x126f/0x1c90 kernel/locking/lockdep.c:5237
 lock_acquire kernel/locking/lockdep.c:5868 [inline]
 lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825
 console_lock_spinning_enable+0xb0/0xd0 kernel/printk/printk.c:1924
 console_emit_next_record kernel/printk/printk.c:3132 [inline]
 console_flush_all+0x7aa/0xc60 kernel/printk/printk.c:3226
 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
 console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
 vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
 _printk+0xc7/0x100 kernel/printk/printk.c:2475
 __report_bug lib/bug.c:191 [inline]
 report_bug+0x435/0x580 lib/bug.c:215
 handle_bug+0x184/0x210 arch/x86/kernel/traps.c:338
 exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:392
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1513 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1511 [inline]
RIP: 0010:update_rq_clock+0x34a/0xc70 kernel/sched/core.c:834
Code: ab 88 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 58 0e 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc90015a06c10 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b853a440 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dde9af3 RDI: ffffffff8c15e500
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff214fb92
R10: ffffffff90a7dc97 R11: 0000000000000001 R12: ffffffff90a80e64
R13: ffff88801e2b3c00 R14: ffff8880b853a440 R15: ffff8880b843af50
 pick_next_task kernel/sched/core.c:6190 [inline]
 __schedule+0x27fc/0x5df0 kernel/sched/core.c:6902
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7288
 irqentry_exit+0x36/0x90 kernel/entry/common.c:197
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872
Code: 38 38 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 12 85 10 0f 0f 82 74 02 00 00 8b 35 da b6 10 0f 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 69 38 38 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90015a06ef8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e5c0ee0 RCX: 00000000ef9d33e4
RDX: 0000000000000000 RSI: ffffffff8dde9af3 RDI: ffffffff8c15e500
RBP: 0000000000000002 R08: 0ac0d5affe09d4ff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:841 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
 __unwind_start+0x45f/0x7f0 arch/x86/kernel/unwind_orc.c:758
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0x73/0x100 arch/x86/kernel/stacktrace.c:24
 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:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 free_unref_folios+0xa65/0x1800 mm/page_alloc.c:2763
 folios_put_refs+0x56f/0x740 mm/swap.c:992
 folio_batch_release include/linux/pagevec.h:101 [inline]
 shmem_undo_range+0x58f/0x1150 mm/shmem.c:1125
 shmem_truncate_range mm/shmem.c:1237 [inline]
 shmem_evict_inode+0x3a1/0xbe0 mm/shmem.c:1365
 evict+0x3e3/0x920 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput fs/inode.c:1923 [inline]
 iput+0x521/0x880 fs/inode.c:1909
 dentry_unlink_inode+0x29c/0x480 fs/dcache.c:466
 __dentry_kill+0x1d0/0x600 fs/dcache.c:669
 dput.part.0+0x4b1/0x9b0 fs/dcache.c:911
 dput+0x1f/0x30 fs/dcache.c:901
 __fput+0x51c/0xb70 fs/file_table.c:476
 task_work_run+0x150/0x240 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x86f/0x2bf0 kernel/exit.c:964
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1105
 get_signal+0x2673/0x26d0 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:224 [inline]
 irqentry_exit_to_user_mode+0x12a/0x270 kernel/entry/common.c:73
 asm_exc_stack_segment+0x26/0x30 arch/x86/include/asm/idtentry.h:616
RIP: 0033:0x7f989eb8eb71
Code: Unable to access opcode bytes at 0x7f989eb8eb47.
RSP: 002b:0100000000000005 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f989edb6080 RCX: 00007f989eb8eb69
RDX: 0000000000000000 RSI: 0100000000000005 RDI: 0000000020003b46
RBP: 00007f989ec11df1 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f989edb6080 R15: 00007ffc62a83b88
 </TASK>
WARNING: CPU: 0 PID: 25648 at kernel/sched/sched.h:1513 lockdep_assert_rq_held kernel/sched/sched.h:1513 [inline]
WARNING: CPU: 0 PID: 25648 at kernel/sched/sched.h:1513 lockdep_assert_rq_held kernel/sched/sched.h:1511 [inline]
WARNING: CPU: 0 PID: 25648 at kernel/sched/sched.h:1513 update_rq_clock+0x34a/0xc70 kernel/sched/core.c:834
Modules linked in:
CPU: 0 UID: 0 PID: 25648 Comm: syz.4.2722 Not tainted 6.16.0-syzkaller-08685-g260f6f4fda93 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1513 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1511 [inline]
RIP: 0010:update_rq_clock+0x34a/0xc70 kernel/sched/core.c:834
Code: ab 88 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 58 0e 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc90015a06c10 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b853a440 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dde9af3 RDI: ffffffff8c15e500
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff214fb92
R10: ffffffff90a7dc97 R11: 0000000000000001 R12: ffffffff90a80e64
R13: ffff88801e2b3c00 R14: ffff8880b853a440 R15: ffff8880b843af50
FS:  0000000000000000(0000) GS:ffff888124727000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d1bbff8 CR3: 00000000598da000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 pick_next_task kernel/sched/core.c:6190 [inline]
 __schedule+0x27fc/0x5df0 kernel/sched/core.c:6902
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7288
 irqentry_exit+0x36/0x90 kernel/entry/common.c:197
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872
Code: 38 38 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 12 85 10 0f 0f 82 74 02 00 00 8b 35 da b6 10 0f 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 69 38 38 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90015a06ef8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e5c0ee0 RCX: 00000000ef9d33e4
RDX: 0000000000000000 RSI: ffffffff8dde9af3 RDI: ffffffff8c15e500
RBP: 0000000000000002 R08: 0ac0d5affe09d4ff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:841 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
 __unwind_start+0x45f/0x7f0 arch/x86/kernel/unwind_orc.c:758
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0x73/0x100 arch/x86/kernel/stacktrace.c:24
 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:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 free_unref_folios+0xa65/0x1800 mm/page_alloc.c:2763
 folios_put_refs+0x56f/0x740 mm/swap.c:992
 folio_batch_release include/linux/pagevec.h:101 [inline]
 shmem_undo_range+0x58f/0x1150 mm/shmem.c:1125
 shmem_truncate_range mm/shmem.c:1237 [inline]
 shmem_evict_inode+0x3a1/0xbe0 mm/shmem.c:1365
 evict+0x3e3/0x920 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput fs/inode.c:1923 [inline]
 iput+0x521/0x880 fs/inode.c:1909
 dentry_unlink_inode+0x29c/0x480 fs/dcache.c:466
 __dentry_kill+0x1d0/0x600 fs/dcache.c:669
 dput.part.0+0x4b1/0x9b0 fs/dcache.c:911
 dput+0x1f/0x30 fs/dcache.c:901
 __fput+0x51c/0xb70 fs/file_table.c:476
 task_work_run+0x150/0x240 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x86f/0x2bf0 kernel/exit.c:964
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1105
 get_signal+0x2673/0x26d0 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:224 [inline]
 irqentry_exit_to_user_mode+0x12a/0x270 kernel/entry/common.c:73
 asm_exc_stack_segment+0x26/0x30 arch/x86/include/asm/idtentry.h:616
RIP: 0033:0x7f989eb8eb71
Code: Unable to access opcode bytes at 0x7f989eb8eb47.
RSP: 002b:0100000000000005 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f989edb6080 RCX: 00007f989eb8eb69
RDX: 0000000000000000 RSI: 0100000000000005 RDI: 0000000020003b46
RBP: 00007f989ec11df1 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f989edb6080 R15: 00007ffc62a83b88
 </TASK>
----------------
Code disassembly (best guess):
   0:	38 38                	cmp    %bh,(%rax)
   2:	12 83 f8 07 0f 87    	adc    -0x78f0f808(%rbx),%al
   8:	bc 02 00 00 89       	mov    $0x89000002,%esp
   d:	c0 48 0f a3          	rorb   $0xa3,0xf(%rax)
  11:	05 12 85 10 0f       	add    $0xf108512,%eax
  16:	0f 82 74 02 00 00    	jb     0x290
  1c:	8b 35 da b6 10 0f    	mov    0xf10b6da(%rip),%esi        # 0xf10b6fc
  22:	85 f6                	test   %esi,%esi
  24:	0f 85 8d 00 00 00    	jne    0xb7
* 2a:	48 8b 44 24 30       	mov    0x30(%rsp),%rax <-- trapping instruction
  2f:	65 48 2b 05 69 38 38 	sub    %gs:0x12383869(%rip),%rax        # 0x123838a0
  36:	12
  37:	0f 85 c7 02 00 00    	jne    0x304
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4