------------[ cut here ]------------ ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.3.245/7115 is trying to acquire lock: ffffffff8e6f35c0 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable+0x61/0x80 kernel/printk/printk.c:1902 but task is already holding lock: ffff8880b843b2e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:655 [inline] ffff8880b843b2e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x88/0x140 kernel/sched/core.c:639 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+0x2c/0x140 kernel/sched/core.c:647 raw_spin_rq_lock kernel/sched/sched.h:1615 [inline] _task_rq_lock+0xcf/0x490 kernel/sched/core.c:747 cgroup_move_task+0x81/0x2b0 kernel/sched/psi.c:1170 css_set_move_task+0x285/0x600 kernel/cgroup/cgroup.c:948 cgroup_post_fork+0x202/0x9b0 kernel/cgroup/cgroup.c:6917 copy_process+0x5f26/0x7a10 kernel/fork.c:2467 kernel_clone+0xfc/0x9a0 kernel/fork.c:2654 user_mode_thread+0xcc/0x110 kernel/fork.c:2730 rest_init+0x21/0x260 init/main.c:725 start_kernel+0x47f/0x480 init/main.c:1210 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310 x86_64_start_kernel+0x12b/0x130 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:132 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:570 [inline] try_to_wake_up+0xb2/0x1a80 kernel/sched/core.c:4130 __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+0x68f/0x860 drivers/tty/serial/8250/8250_port.c:1719 serial8250_handle_irq+0x73e/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:86 __handle_irq_event_percpu+0x232/0x8e0 kernel/irq/handle.c:209 handle_irq_event_percpu kernel/irq/handle.c:246 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:263 handle_edge_irq+0x375/0x970 kernel/irq/chip.c:855 generic_handle_irq_desc include/linux/irqdesc.h:186 [inline] handle_irq arch/x86/kernel/irq.c:262 [inline] call_irq_handler arch/x86/kernel/irq.c:318 [inline] __common_interrupt+0xd8/0x2f0 arch/x86/kernel/irq.c:333 common_interrupt+0xb9/0xe0 arch/x86/kernel/irq.c:326 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688 unwind_next_frame+0x553/0x1ea0 arch/x86/kernel/unwind_orc.c:527 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2685 [inline] slab_free mm/slub.c:6165 [inline] kfree+0x1f6/0x6b0 mm/slub.c:6483 tomoyo_path_number_perm+0x46d/0x580 security/tomoyo/file.c:741 security_file_ioctl+0xd3/0x230 security/security.c:2435 __do_sys_ioctl fs/ioctl.c:591 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0xb7/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&tty->write_wait){-.-.}-{3:3}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [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+0x68f/0x860 drivers/tty/serial/8250/8250_port.c:1719 serial8250_handle_irq+0x73e/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:86 __handle_irq_event_percpu+0x232/0x8e0 kernel/irq/handle.c:209 handle_irq_event_percpu kernel/irq/handle.c:246 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:263 handle_edge_irq+0x375/0x970 kernel/irq/chip.c:855 generic_handle_irq_desc include/linux/irqdesc.h:186 [inline] handle_irq arch/x86/kernel/irq.c:262 [inline] call_irq_handler arch/x86/kernel/irq.c:318 [inline] __common_interrupt+0xd8/0x2f0 arch/x86/kernel/irq.c:333 common_interrupt+0xb9/0xe0 arch/x86/kernel/irq.c:326 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:62 arch_safe_halt arch/x86/include/asm/paravirt.h:73 [inline] default_idle+0x9/0x10 arch/x86/kernel/process.c:767 default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x43a/0x550 kernel/sched/idle.c:341 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:439 rest_init+0x251/0x260 init/main.c:760 start_kernel+0x47f/0x480 init/main.c:1210 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310 x86_64_start_kernel+0x12b/0x130 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:132 [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+0x17e/0x1900 drivers/tty/serial/8250/8250_port.c:3301 console_emit_next_record kernel/printk/printk.c:3183 [inline] console_flush_one_record+0x790/0xe50 kernel/printk/printk.c:3269 console_flush_all kernel/printk/printk.c:3343 [inline] __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0x103/0x260 kernel/printk/printk.c:3413 vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479 _printk+0xcf/0x110 kernel/printk/printk.c:2504 register_console.cold+0xc0/0x248 kernel/printk/printk.c:4208 univ8250_console_init+0x6f/0x80 drivers/tty/serial/8250/8250_core.c:515 console_init+0x423/0x620 kernel/printk/printk.c:4407 start_kernel+0x305/0x480 init/main.c:1147 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310 x86_64_start_kernel+0x12b/0x130 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1902 console_emit_next_record kernel/printk/printk.c:3177 [inline] console_flush_one_record+0x739/0xe50 kernel/printk/printk.c:3269 console_flush_all kernel/printk/printk.c:3343 [inline] __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0x103/0x260 kernel/printk/printk.c:3413 vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479 _printk+0xcf/0x110 kernel/printk/printk.c:2504 __report_bug.cold+0x15/0x137 lib/bug.c:243 report_bug+0xb2/0x220 lib/bug.c:281 handle_bug+0x16a/0x2a0 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:1600 [inline] lockdep_assert_rq_held kernel/sched/sched.h:1597 [inline] update_rq_clock+0x40a/0xd20 kernel/sched/core.c:850 pick_next_task kernel/sched/core.c:6129 [inline] __schedule+0x1b7d/0x6120 kernel/sched/core.c:6849 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7235 irqentry_exit+0x17b/0x670 kernel/entry/common.c:239 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 constant_test_bit arch/x86/include/asm/bitops.h:202 [inline] arch_test_bit arch/x86/include/asm/bitops.h:232 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] folio_test_locked include/linux/page-flags.h:551 [inline] move_to_new_folio+0x10e/0x4e0 mm/migrate.c:1097 migrate_folio_move mm/migrate.c:1374 [inline] migrate_folios_move mm/migrate.c:1721 [inline] migrate_pages_batch+0x1872/0x4530 mm/migrate.c:1977 migrate_pages_sync+0x12c/0x880 mm/migrate.c:2007 migrate_pages+0x1aae/0x28a0 mm/migrate.c:2116 compact_zone+0x2464/0x44c0 mm/compaction.c:2647 compact_node+0x17f/0x2c0 mm/compaction.c:2916 compact_store+0x123/0x150 mm/compaction.c:3005 dev_attr_store+0x58/0x80 drivers/base/core.c:2437 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:142 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:352 do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:829 vfs_writev+0x360/0xe10 fs/read_write.c:1059 do_writev+0x13e/0x340 fs/read_write.c:1105 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f 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 *** 7 locks held by syz.3.245/7115: #0: ffff888036188478 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2aa/0x380 fs/file.c:1261 #1: ffff8880362ca420 (sb_writers#7){.+.+}-{0:0}, at: do_writev+0x13e/0x340 fs/read_write.c:1105 #2: ffff88805cf88488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x2c2/0x5f0 fs/kernfs/file.c:343 #3: ffff88801fabcb48 (kn->active#101){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #3: ffff88801fabcb48 (kn->active#101){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x332/0x5f0 fs/kernfs/file.c:344 #4: ffff8880b843b2e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:655 [inline] #4: ffff8880b843b2e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x88/0x140 kernel/sched/core.c:639 #5: ffffffff8e7d3a00 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x110 kernel/printk/printk.c:2504 #6: ffffffff8e7d3a78 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:317 [inline] #6: ffffffff8e7d3a78 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:428 [inline] #6: ffffffff8e7d3a78 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:291 [inline] #6: ffffffff8e7d3a78 (console_srcu){....}-{0:0}, at: console_flush_one_record+0xfd/0xe50 kernel/printk/printk.c:3246 stack backtrace: CPU: 0 UID: 0 PID: 7115 Comm: syz.3.245 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1902 console_emit_next_record kernel/printk/printk.c:3177 [inline] console_flush_one_record+0x739/0xe50 kernel/printk/printk.c:3269 console_flush_all kernel/printk/printk.c:3343 [inline] __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0x103/0x260 kernel/printk/printk.c:3413 vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479 _printk+0xcf/0x110 kernel/printk/printk.c:2504 __report_bug.cold+0x15/0x137 lib/bug.c:243 report_bug+0xb2/0x220 lib/bug.c:281 handle_bug+0x16a/0x2a0 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:1600 [inline] RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1597 [inline] RIP: 0010:update_rq_clock+0x40a/0xd20 kernel/sched/core.c:850 Code: ab 48 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 18 ba ba 09 a8 04 0f 84 df fc ff ff 90 0f 0b 90 e9 d6 fc ff ff 90 <0f> 0b 90 e9 92 fc ff ff 4c 8d 83 40 0b 00 00 48 b8 00 00 00 00 00 RSP: 0018:ffffc90004d7eed0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff8880b853b280 RCX: 0000000000000001 RDX: 0000000000000046 RSI: ffffffff8de5958f RDI: ffffffff8c1b0520 RBP: ffffc90004d7f078 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90d9bc17 R11: 0000000000000000 R12: ffffffff90d9efe4 R13: ffff8880b853c0c0 R14: ffff88801e689e80 R15: ffff8880b853b280 pick_next_task kernel/sched/core.c:6129 [inline] __schedule+0x1b7d/0x6120 kernel/sched/core.c:6849 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7235 irqentry_exit+0x17b/0x670 kernel/entry/common.c:239 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:202 [inline] RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:232 [inline] RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] RIP: 0010:folio_test_locked include/linux/page-flags.h:551 [inline] RIP: 0010:move_to_new_folio+0x10e/0x4e0 mm/migrate.c:1097 Code: 01 00 00 e8 b4 77 93 ff be 08 00 00 00 48 89 ef e8 f7 08 ff ff 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 64 03 00 00 4c 8b 6d 00 31 ff 41 83 e5 01 44 89 ee e8 ca 71 RSP: 0018:ffffc90004d7f180 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffea00052dc3c0 RCX: ffffffff82749f79 RDX: 1ffffd4000a61390 RSI: 0000000000000008 RDI: ffffea0005309c80 RBP: ffffea0005309c80 R08: 0000000000000000 R09: fffff94000a61390 R10: ffffea0005309c87 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffea00052dc3c8 migrate_folio_move mm/migrate.c:1374 [inline] migrate_folios_move mm/migrate.c:1721 [inline] migrate_pages_batch+0x1872/0x4530 mm/migrate.c:1977 migrate_pages_sync+0x12c/0x880 mm/migrate.c:2007 migrate_pages+0x1aae/0x28a0 mm/migrate.c:2116 compact_zone+0x2464/0x44c0 mm/compaction.c:2647 compact_node+0x17f/0x2c0 mm/compaction.c:2916 compact_store+0x123/0x150 mm/compaction.c:3005 dev_attr_store+0x58/0x80 drivers/base/core.c:2437 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:142 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:352 do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:829 vfs_writev+0x360/0xe10 fs/read_write.c:1059 do_writev+0x13e/0x340 fs/read_write.c:1105 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f32a899c799 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:00007f32a97ca028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f32a8c16090 RCX: 00007f32a899c799 RDX: 0000000000000003 RSI: 0000200000000080 RDI: 0000000000000005 RBP: 00007f32a8a32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f32a8c16128 R14: 00007f32a8c16090 R15: 00007ffeff3835d8 debug_locks && !(lock_is_held(&(__rq_lockp(rq))->dep_map) != 0) WARNING: kernel/sched/sched.h:1600 at lockdep_assert_rq_held kernel/sched/sched.h:1600 [inline], CPU#0: syz.3.245/7115 WARNING: kernel/sched/sched.h:1600 at lockdep_assert_rq_held kernel/sched/sched.h:1597 [inline], CPU#0: syz.3.245/7115 WARNING: kernel/sched/sched.h:1600 at update_rq_clock+0x40a/0xd20 kernel/sched/core.c:850, CPU#0: syz.3.245/7115 Modules linked in: CPU: 0 UID: 0 PID: 7115 Comm: syz.3.245 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1600 [inline] RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1597 [inline] RIP: 0010:update_rq_clock+0x40a/0xd20 kernel/sched/core.c:850 Code: ab 48 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 18 ba ba 09 a8 04 0f 84 df fc ff ff 90 0f 0b 90 e9 d6 fc ff ff 90 <0f> 0b 90 e9 92 fc ff ff 4c 8d 83 40 0b 00 00 48 b8 00 00 00 00 00 RSP: 0018:ffffc90004d7eed0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff8880b853b280 RCX: 0000000000000001 RDX: 0000000000000046 RSI: ffffffff8de5958f RDI: ffffffff8c1b0520 RBP: ffffc90004d7f078 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90d9bc17 R11: 0000000000000000 R12: ffffffff90d9efe4 R13: ffff8880b853c0c0 R14: ffff88801e689e80 R15: ffff8880b853b280 FS: 00007f32a97ca6c0(0000) GS:ffff88812434a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31000ff8 CR3: 000000003774a000 CR4: 00000000003526f0 Call Trace: pick_next_task kernel/sched/core.c:6129 [inline] __schedule+0x1b7d/0x6120 kernel/sched/core.c:6849 preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7235 irqentry_exit+0x17b/0x670 kernel/entry/common.c:239 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:202 [inline] RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:232 [inline] RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] RIP: 0010:folio_test_locked include/linux/page-flags.h:551 [inline] RIP: 0010:move_to_new_folio+0x10e/0x4e0 mm/migrate.c:1097 Code: 01 00 00 e8 b4 77 93 ff be 08 00 00 00 48 89 ef e8 f7 08 ff ff 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 64 03 00 00 4c 8b 6d 00 31 ff 41 83 e5 01 44 89 ee e8 ca 71 RSP: 0018:ffffc90004d7f180 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffea00052dc3c0 RCX: ffffffff82749f79 RDX: 1ffffd4000a61390 RSI: 0000000000000008 RDI: ffffea0005309c80 RBP: ffffea0005309c80 R08: 0000000000000000 R09: fffff94000a61390 R10: ffffea0005309c87 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffea00052dc3c8 migrate_folio_move mm/migrate.c:1374 [inline] migrate_folios_move mm/migrate.c:1721 [inline] migrate_pages_batch+0x1872/0x4530 mm/migrate.c:1977 migrate_pages_sync+0x12c/0x880 mm/migrate.c:2007 migrate_pages+0x1aae/0x28a0 mm/migrate.c:2116 compact_zone+0x2464/0x44c0 mm/compaction.c:2647 compact_node+0x17f/0x2c0 mm/compaction.c:2916 compact_store+0x123/0x150 mm/compaction.c:3005 dev_attr_store+0x58/0x80 drivers/base/core.c:2437 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:142 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:352 do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:829 vfs_writev+0x360/0xe10 fs/read_write.c:1059 do_writev+0x13e/0x340 fs/read_write.c:1105 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f32a899c799 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:00007f32a97ca028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f32a8c16090 RCX: 00007f32a899c799 RDX: 0000000000000003 RSI: 0000200000000080 RDI: 0000000000000005 RBP: 00007f32a8a32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f32a8c16128 R14: 00007f32a8c16090 R15: 00007ffeff3835d8 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: e8 b4 77 93 ff call 0xff9377bb 7: be 08 00 00 00 mov $0x8,%esi c: 48 89 ef mov %rbp,%rdi f: e8 f7 08 ff ff call 0xffff090b 14: 48 89 ea mov %rbp,%rdx 17: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1e: fc ff df 21: 48 c1 ea 03 shr $0x3,%rdx 25: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 29: 0f 85 64 03 00 00 jne 0x393 <-- trapping instruction 2f: 4c 8b 6d 00 mov 0x0(%rbp),%r13 33: 31 ff xor %edi,%edi 35: 41 83 e5 01 and $0x1,%r13d 39: 44 89 ee mov %r13d,%esi 3c: e8 .byte 0xe8 3d: ca .byte 0xca 3e: 71 .byte 0x71