FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 ====================================================== WARNING: possible circular locking dependency detected 6.17.0-rc1-syzkaller-00004-g53e760d89498 #0 Not tainted ------------------------------------------------------ syz.2.891/9709 is trying to acquire lock: ffffffff8e4ce820 (console_owner){-.-.}-{0:0}, at: console_lock_spinning_enable+0x9f/0xd0 kernel/printk/printk.c:1924 but task is already holding lock: ffff8880b843a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:644 [inline] ffff8880b843a318 (&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:1519 [inline] task_rq_lock+0xcf/0x490 kernel/sched/core.c:736 cgroup_move_task+0x81/0x2a0 kernel/sched/psi.c:1170 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:2419 kernel_clone+0xfc/0x930 kernel/fork.c:2605 user_mode_thread+0xc7/0x110 kernel/fork.c:2683 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+0xb7/0x1870 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 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+0xf5/0x1b0 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+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:693 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:757 default_idle_call+0x6d/0xb0 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:190 [inline] do_idle+0x391/0x510 kernel/sched/idle.c:330 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428 start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:315 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+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+0xf5/0x1b0 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+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:693 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:757 default_idle_call+0x6d/0xb0 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:190 [inline] do_idle+0x391/0x510 kernel/sched/idle.c:330 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428 start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:315 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: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:4126 univ8250_console_init+0x5f/0x90 drivers/tty/serial/8250/8250_core.c:516 console_init+0x14f/0x680 kernel/printk/printk.c:4325 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+0x12a6/0x1ce0 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 fail_dump lib/fault-inject.c:66 [inline] should_fail_ex+0x4e7/0x640 lib/fault-inject.c:174 strncpy_from_user+0x3b/0x2e0 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:192 bpf_trace_copy_string kernel/bpf/helpers.c:761 [inline] bpf_bprintf_prepare+0xe90/0x13f0 kernel/bpf/helpers.c:976 ____bpf_trace_printk kernel/trace/bpf_trace.c:373 [inline] bpf_trace_printk+0xda/0x190 kernel/trace/bpf_trace.c:363 bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 bpf_dispatcher_nop_func include/linux/bpf.h:1332 [inline] __bpf_prog_run include/linux/filter.h:718 [inline] bpf_prog_run include/linux/filter.h:725 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline] bpf_trace_run2+0x236/0x590 kernel/trace/bpf_trace.c:2298 __bpf_trace_contention_begin+0xc9/0x110 include/trace/events/lock.h:95 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] class_preempt_notrace_destructor include/linux/preempt.h:473 [inline] __do_trace_contention_begin include/trace/events/lock.h:95 [inline] trace_contention_begin.constprop.0+0xde/0x160 include/trace/events/lock.h:95 __pv_queued_spin_lock_slowpath+0x109/0xcf0 kernel/locking/qspinlock.c:219 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x20e/0x2b0 kernel/locking/spinlock_debug.c:116 raw_spin_rq_lock_nested kernel/sched/core.c:644 [inline] raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:629 raw_spin_rq_lock kernel/sched/sched.h:1519 [inline] rq_lock kernel/sched/sched.h:1841 [inline] __schedule+0x307/0x5de0 kernel/sched/core.c:6865 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 format_decode+0x128/0xd40 lib/vsprintf.c:2671 vsnprintf+0x156/0x1160 lib/vsprintf.c:2869 tomoyo_supervisor+0x11d/0x13b0 security/tomoyo/common.c:2170 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x448/0x580 security/tomoyo/file.c:734 security_file_ioctl+0x9b/0x240 security/security.c:2943 __do_sys_ioctl fs/ioctl.c:592 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0xb7/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 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 *** 5 locks held by syz.2.891/9709: #0: ffffffff8f05b2f0 (tomoyo_ss){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline] #0: ffffffff8f05b2f0 (tomoyo_ss){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline] #0: ffffffff8f05b2f0 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1108 [inline] #0: ffffffff8f05b2f0 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_number_perm+0x237/0x580 security/tomoyo/file.c:722 #1: ffff8880b843a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:644 [inline] #1: ffff8880b843a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:629 #2: ffffffff8e5c11e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #2: ffffffff8e5c11e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #2: ffffffff8e5c11e0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2256 [inline] #2: ffffffff8e5c11e0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1bc/0x590 kernel/trace/bpf_trace.c:2298 #3: ffffffff8e5aec60 (console_lock){+.+.}-{0:0}, at: _printk+0xc7/0x100 kernel/printk/printk.c:2475 #4: ffffffff8e5aecd0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline] #4: ffffffff8e5aecd0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:319 [inline] #4: ffffffff8e5aecd0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline] #4: ffffffff8e5aecd0 (console_srcu){....}-{0:0}, at: console_flush_all+0x158/0xc60 kernel/printk/printk.c:3203 stack backtrace: CPU: 1 UID: 0 PID: 9709 Comm: syz.2.891 Not tainted 6.17.0-rc1-syzkaller-00004-g53e760d89498 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: __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+0x12a6/0x1ce0 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 fail_dump lib/fault-inject.c:66 [inline] should_fail_ex+0x4e7/0x640 lib/fault-inject.c:174 strncpy_from_user+0x3b/0x2e0 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:192 bpf_trace_copy_string kernel/bpf/helpers.c:761 [inline] bpf_bprintf_prepare+0xe90/0x13f0 kernel/bpf/helpers.c:976 ____bpf_trace_printk kernel/trace/bpf_trace.c:373 [inline] bpf_trace_printk+0xda/0x190 kernel/trace/bpf_trace.c:363 bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 bpf_dispatcher_nop_func include/linux/bpf.h:1332 [inline] __bpf_prog_run include/linux/filter.h:718 [inline] bpf_prog_run include/linux/filter.h:725 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline] bpf_trace_run2+0x236/0x590 kernel/trace/bpf_trace.c:2298 __bpf_trace_contention_begin+0xc9/0x110 include/trace/events/lock.h:95 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] class_preempt_notrace_destructor include/linux/preempt.h:473 [inline] __do_trace_contention_begin include/trace/events/lock.h:95 [inline] trace_contention_begin.constprop.0+0xde/0x160 include/trace/events/lock.h:95 __pv_queued_spin_lock_slowpath+0x109/0xcf0 kernel/locking/qspinlock.c:219 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x20e/0x2b0 kernel/locking/spinlock_debug.c:116 raw_spin_rq_lock_nested kernel/sched/core.c:644 [inline] raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:629 raw_spin_rq_lock kernel/sched/sched.h:1519 [inline] rq_lock kernel/sched/sched.h:1841 [inline] __schedule+0x307/0x5de0 kernel/sched/core.c:6865 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:format_decode+0x128/0xd40 lib/vsprintf.c:2671 Code: ea 03 0f b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 ec 08 00 00 45 0f b6 65 00 31 ff 4c 89 eb 44 89 e6 e8 a8 ba 2b f6 <45> 84 e4 74 6c 49 bf 00 00 00 00 00 fc ff df eb 3e e8 b2 bf 2b f6 RSP: 0018:ffffc9000e6578c8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffffffff8c0f40a5 RCX: ffffffff8b8fd358 RDX: ffff888028e3a440 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc9000e657968 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000025 R11: 0000000000000000 R12: 0000000000000025 R13: ffffffff8c0f40a5 R14: ffffc9000e6579e8 R15: 0000000000000025 vsnprintf+0x156/0x1160 lib/vsprintf.c:2869 tomoyo_supervisor+0x11d/0x13b0 security/tomoyo/common.c:2170 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x448/0x580 security/tomoyo/file.c:734 security_file_ioctl+0x9b/0x240 security/security.c:2943 __do_sys_ioctl fs/ioctl.c:592 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0xb7/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa837d8ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa838c53038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa837fb5fa0 RCX: 00007fa837d8ebe9 RDX: 0000200000000000 RSI: 0000000000008b34 RDI: 0000000000000006 RBP: 00007fa838c53090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fa837fb6038 R14: 00007fa837fb5fa0 R15: 00007fff6a35fbc8 CPU: 1 UID: 0 PID: 9709 Comm: syz.2.891 Not tainted 6.17.0-rc1-syzkaller-00004-g53e760d89498 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 fail_dump lib/fault-inject.c:73 [inline] should_fail_ex+0x512/0x640 lib/fault-inject.c:174 strncpy_from_user+0x3b/0x2e0 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:192 bpf_trace_copy_string kernel/bpf/helpers.c:761 [inline] bpf_bprintf_prepare+0xe90/0x13f0 kernel/bpf/helpers.c:976 ____bpf_trace_printk kernel/trace/bpf_trace.c:373 [inline] bpf_trace_printk+0xda/0x190 kernel/trace/bpf_trace.c:363 bpf_prog_7c77c7e0f6645ad8+0x3e/0x44 bpf_dispatcher_nop_func include/linux/bpf.h:1332 [inline] __bpf_prog_run include/linux/filter.h:718 [inline] bpf_prog_run include/linux/filter.h:725 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline] bpf_trace_run2+0x236/0x590 kernel/trace/bpf_trace.c:2298 __bpf_trace_contention_begin+0xc9/0x110 include/trace/events/lock.h:95 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] class_preempt_notrace_destructor include/linux/preempt.h:473 [inline] __do_trace_contention_begin include/trace/events/lock.h:95 [inline] trace_contention_begin.constprop.0+0xde/0x160 include/trace/events/lock.h:95 __pv_queued_spin_lock_slowpath+0x109/0xcf0 kernel/locking/qspinlock.c:219 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x20e/0x2b0 kernel/locking/spinlock_debug.c:116 raw_spin_rq_lock_nested kernel/sched/core.c:644 [inline] raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:629 raw_spin_rq_lock kernel/sched/sched.h:1519 [inline] rq_lock kernel/sched/sched.h:1841 [inline] __schedule+0x307/0x5de0 kernel/sched/core.c:6865 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:format_decode+0x128/0xd40 lib/vsprintf.c:2671 Code: ea 03 0f b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 ec 08 00 00 45 0f b6 65 00 31 ff 4c 89 eb 44 89 e6 e8 a8 ba 2b f6 <45> 84 e4 74 6c 49 bf 00 00 00 00 00 fc ff df eb 3e e8 b2 bf 2b f6 RSP: 0018:ffffc9000e6578c8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffffffff8c0f40a5 RCX: ffffffff8b8fd358 RDX: ffff888028e3a440 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc9000e657968 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000025 R11: 0000000000000000 R12: 0000000000000025 R13: ffffffff8c0f40a5 R14: ffffc9000e6579e8 R15: 0000000000000025 vsnprintf+0x156/0x1160 lib/vsprintf.c:2869 tomoyo_supervisor+0x11d/0x13b0 security/tomoyo/common.c:2170 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x448/0x580 security/tomoyo/file.c:734 security_file_ioctl+0x9b/0x240 security/security.c:2943 __do_sys_ioctl fs/ioctl.c:592 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0xb7/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa837d8ebe9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa838c53038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa837fb5fa0 RCX: 00007fa837d8ebe9 RDX: 0000200000000000 RSI: 0000000000008b34 RDI: 0000000000000006 RBP: 00007fa838c53090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fa837fb6038 R14: 00007fa837fb5fa0 R15: 00007fff6a35fbc8 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 03 0f add (%rdi),%ecx 2: b6 04 mov $0x4,%dh 4: 02 4c 89 ea add -0x16(%rcx,%rcx,4),%cl 8: 83 e2 07 and $0x7,%edx b: 38 d0 cmp %dl,%al d: 7f 08 jg 0x17 f: 84 c0 test %al,%al 11: 0f 85 ec 08 00 00 jne 0x903 17: 45 0f b6 65 00 movzbl 0x0(%r13),%r12d 1c: 31 ff xor %edi,%edi 1e: 4c 89 eb mov %r13,%rbx 21: 44 89 e6 mov %r12d,%esi 24: e8 a8 ba 2b f6 call 0xf62bbad1 * 29: 45 84 e4 test %r12b,%r12b <-- trapping instruction 2c: 74 6c je 0x9a 2e: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 35: fc ff df 38: eb 3e jmp 0x78 3a: e8 b2 bf 2b f6 call 0xf62bbff1