FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
6.1.148-syzkaller #0 Not tainted
------------------------------------------------------
syz.7.1614/11496 is trying to acquire lock:
ffffffff8cb1ef80 (console_owner){-.-.}-{0:0}, at: console_lock_spinning_enable kernel/printk/printk.c:1818 [inline]
ffffffff8cb1ef80 (console_owner){-.-.}-{0:0}, at: console_emit_next_record+0x82d/0xc90 kernel/printk/printk.c:2774
but task is already holding lock:
ffff8880b8e3aa98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa5/0x140 kernel/sched/core.c:545
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+0x2e/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
raw_spin_rq_lock kernel/sched/sched.h:1355 [inline]
rq_lock kernel/sched/sched.h:1645 [inline]
task_fork_fair+0x5c/0x350 kernel/sched/fair.c:11888
sched_cgroup_fork+0x32c/0x3c0 kernel/sched/core.c:4685
copy_process+0x24b8/0x4020 kernel/fork.c:2459
kernel_clone+0x225/0x8b0 kernel/fork.c:2757
user_mode_thread+0xda/0x130 kernel/fork.c:2833
rest_init+0x23/0x300 init/main.c:698
start_kernel+0x0/0x539 init/main.c:893
start_kernel+0x490/0x539 init/main.c:1140
secondary_startup_64_no_verify+0xcf/0xdb
-> #3 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
try_to_wake_up+0x5c/0x1080 kernel/sched/core.c:4111
__wake_up_common+0x2a4/0x4e0 kernel/sched/wait.c:107
__wake_up_common_lock kernel/sched/wait.c:138 [inline]
__wake_up+0x10e/0x190 kernel/sched/wait.c:160
tty_port_default_wakeup+0x9e/0xf0 drivers/tty/tty_port.c:71
serial8250_tx_chars+0x629/0x830 drivers/tty/serial/8250/8250_port.c:1854
serial8250_handle_irq+0x516/0x6d0 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+0x298/0xa30 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+0x243/0xb20 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+0x59/0xd0 arch/x86/kernel/irq.c:242
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:682
native_irq_enable arch/x86/include/asm/irqflags.h:-1 [inline]
arch_local_irq_enable arch/x86/include/asm/irqflags.h:80 [inline]
handle_softirqs+0x1c8/0x920 kernel/softirq.c:580
__do_softirq kernel/softirq.c:630 [inline]
invoke_softirq kernel/softirq.c:470 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
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:191 [inline]
do_idle+0x1fc/0x570 kernel/sched/idle.c:303
cpu_startup_entry+0x3f/0x60 kernel/sched/idle.c:401
rest_init+0x2dc/0x300 init/main.c:733
start_kernel+0x0/0x539 init/main.c:893
start_kernel+0x490/0x539 init/main.c:1140
secondary_startup_64_no_verify+0xcf/0xdb
-> #2 (&tty->write_wait){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:137 [inline]
__wake_up+0xf4/0x190 kernel/sched/wait.c:160
tty_port_default_wakeup+0x9e/0xf0 drivers/tty/tty_port.c:71
serial8250_tx_chars+0x629/0x830 drivers/tty/serial/8250/8250_port.c:1854
serial8250_handle_irq+0x516/0x6d0 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+0x298/0xa30 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+0x243/0xb20 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
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
uart_write+0x68a/0x910 drivers/tty/serial/serial_core.c:602
process_output_block drivers/tty/n_tty.c:586 [inline]
n_tty_write+0xd1a/0x11c0 drivers/tty/n_tty.c:2377
do_tty_write drivers/tty/tty_io.c:1018 [inline]
file_tty_write+0x4dd/0x860 drivers/tty/tty_io.c:1089
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x44c/0x960 fs/read_write.c:584
ksys_write+0x143/0x240 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #1 (&port_lock_key){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
serial8250_console_write+0x169/0x17a0 drivers/tty/serial/8250/8250_port.c:3433
call_console_driver kernel/printk/printk.c:1977 [inline]
console_emit_next_record+0x947/0xc90 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+0x489/0x680 kernel/printk/printk.c:2303
_printk+0xcc/0x110 kernel/printk/printk.c:2328
register_console+0x6c6/0x9c0 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+0x303/0x539 init/main.c:1076
secondary_startup_64_no_verify+0xcf/0xdb
-> #0 (console_owner){-.-.}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049
lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
console_lock_spinning_enable kernel/printk/printk.c:1818 [inline]
console_emit_next_record+0x84c/0xc90 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+0x489/0x680 kernel/printk/printk.c:2303
_printk+0xcc/0x110 kernel/printk/printk.c:2328
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x37a/0x4d0 lib/fault-inject.c:147
strncpy_from_user+0x32/0x350 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x6d/0x140 mm/maccess.c:186
bpf_trace_copy_string kernel/bpf/helpers.c:746 [inline]
bpf_bprintf_prepare+0xba0/0x13d0 kernel/bpf/helpers.c:971
____bpf_trace_printk kernel/trace/bpf_trace.c:384 [inline]
bpf_trace_printk+0xd8/0x190 kernel/trace/bpf_trace.c:374
bpf_prog_7c77c7e0f6645ad8+0x35/0x37
bpf_dispatcher_nop_func include/linux/bpf.h:1001 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2285 [inline]
bpf_trace_run2+0x1cd/0x3b0 kernel/trace/bpf_trace.c:2324
trace_contention_begin+0x142/0x190 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xdc/0x9c0 kernel/locking/qspinlock.c:405
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x217/0x280 kernel/locking/spinlock_debug.c:115
raw_spin_rq_lock_nested+0xa5/0x140 kernel/sched/core.c:545
raw_spin_rq_lock kernel/sched/sched.h:1355 [inline]
rq_lock kernel/sched/sched.h:1645 [inline]
__schedule+0x2ed/0x40b0 kernel/sched/core.c:6477
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
copy_from_kernel_nofault+0x1c6/0x310 mm/maccess.c:41
prepend_copy fs/d_path.c:49 [inline]
prepend fs/d_path.c:75 [inline]
prepend_name fs/d_path.c:100 [inline]
__prepend_path fs/d_path.c:132 [inline]
prepend_path+0x565/0xc20 fs/d_path.c:171
d_absolute_path+0x9e/0x140 fs/d_path.c:233
tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
tomoyo_realpath_from_path+0x2d5/0x5d0 security/tomoyo/realpath.c:271
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x1e3/0x600 security/tomoyo/file.c:723
security_file_ioctl+0x6c/0xa0 security/security.c:1568
__do_sys_ioctl fs/ioctl.c:864 [inline]
__se_sys_ioctl+0x48/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
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 ***
6 locks held by syz.7.1614/11496:
#0: ffffffff8d1351c8 (tomoyo_ss){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d1351c8 (tomoyo_ss){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:165 [inline]
#0: ffffffff8d1351c8 (tomoyo_ss){....}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1110 [inline]
#0: ffffffff8d1351c8 (tomoyo_ss){....}-{0:0}, at: tomoyo_path_number_perm+0x1b6/0x600 security/tomoyo/file.c:722
#1: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#1: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#1: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: prepend_path+0x31/0xc20 fs/d_path.c:163
#2: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#2: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#2: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: prepend_path+0x31/0xc20 fs/d_path.c:163
#3: ffff8880b8e3aa98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa5/0x140 kernel/sched/core.c:545
#4: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#4: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#4: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2284 [inline]
#4: ffffffff8cb2ade0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0xda/0x3b0 kernel/trace/bpf_trace.c:2324
#5: ffffffff8cb1f060 (console_lock){+.+.}-{0:0}, at: _printk+0xcc/0x110 kernel/printk/printk.c:2328
stack backtrace:
CPU: 1 PID: 11496 Comm: syz.7.1614 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2170
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain kernel/locking/lockdep.c:3825 [inline]
__lock_acquire+0x2cf8/0x7c50 kernel/locking/lockdep.c:5049
lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
console_lock_spinning_enable kernel/printk/printk.c:1818 [inline]
console_emit_next_record+0x84c/0xc90 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+0x489/0x680 kernel/printk/printk.c:2303
_printk+0xcc/0x110 kernel/printk/printk.c:2328
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x37a/0x4d0 lib/fault-inject.c:147
strncpy_from_user+0x32/0x350 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x6d/0x140 mm/maccess.c:186
bpf_trace_copy_string kernel/bpf/helpers.c:746 [inline]
bpf_bprintf_prepare+0xba0/0x13d0 kernel/bpf/helpers.c:971
____bpf_trace_printk kernel/trace/bpf_trace.c:384 [inline]
bpf_trace_printk+0xd8/0x190 kernel/trace/bpf_trace.c:374
bpf_prog_7c77c7e0f6645ad8+0x35/0x37
bpf_dispatcher_nop_func include/linux/bpf.h:1001 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2285 [inline]
bpf_trace_run2+0x1cd/0x3b0 kernel/trace/bpf_trace.c:2324
trace_contention_begin+0x142/0x190 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xdc/0x9c0 kernel/locking/qspinlock.c:405
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x217/0x280 kernel/locking/spinlock_debug.c:115
raw_spin_rq_lock_nested+0xa5/0x140 kernel/sched/core.c:545
raw_spin_rq_lock kernel/sched/sched.h:1355 [inline]
rq_lock kernel/sched/sched.h:1645 [inline]
__schedule+0x2ed/0x40b0 kernel/sched/core.c:6477
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:copy_from_kernel_nofault+0x1c6/0x310 mm/maccess.c:41
Code: da 4c 89 ef e8 8b ae 24 00 eb d0 e8 a4 91 d4 ff eb 09 e8 9d 91 d4 ff 49 83 c7 02 31 ff 4c 89 e6 e8 6f 95 d4 ff 4d 85 e4 74 1c <41> 8a 1f e8 82 91 d4 ff 4c 89 f0 48 c1 e8 03 0f b6 04 28 84 c0 75
RSP: 0018:ffffc90003fdfa08 EFLAGS: 00000202
RAX: ffffffff81ac2cd1 RBX: 0000000069647561 RCX: ffff888051bf0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff1c3ea96
R10: fffffbfff1c3ea96 R11: 1ffffffff1c3ea95 R12: 0000000000000001
R13: ffff888055d82ff8 R14: ffff888055d82ffc R15: ffff888025a0d7f4
prepend_copy fs/d_path.c:49 [inline]
prepend fs/d_path.c:75 [inline]
prepend_name fs/d_path.c:100 [inline]
__prepend_path fs/d_path.c:132 [inline]
prepend_path+0x565/0xc20 fs/d_path.c:171
d_absolute_path+0x9e/0x140 fs/d_path.c:233
tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
tomoyo_realpath_from_path+0x2d5/0x5d0 security/tomoyo/realpath.c:271
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x1e3/0x600 security/tomoyo/file.c:723
security_file_ioctl+0x6c/0xa0 security/security.c:1568
__do_sys_ioctl fs/ioctl.c:864 [inline]
__se_sys_ioctl+0x48/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5ceaf8ebe9
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:00007f5cebdc8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5ceb1b6090 RCX: 00007f5ceaf8ebe9
RDX: 0000200000000580 RSI: 00000000c0045005 RDI: 0000000000000008
RBP: 00007f5cebdc8090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f5ceb1b6128 R14: 00007f5ceb1b6090 R15: 00007ffd920fb468
CPU: 1 PID: 11496 Comm: syz.7.1614 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
fail_dump lib/fault-inject.c:52 [inline]
should_fail_ex+0x399/0x4d0 lib/fault-inject.c:147
strncpy_from_user+0x32/0x350 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x6d/0x140 mm/maccess.c:186
bpf_trace_copy_string kernel/bpf/helpers.c:746 [inline]
bpf_bprintf_prepare+0xba0/0x13d0 kernel/bpf/helpers.c:971
____bpf_trace_printk kernel/trace/bpf_trace.c:384 [inline]
bpf_trace_printk+0xd8/0x190 kernel/trace/bpf_trace.c:374
bpf_prog_7c77c7e0f6645ad8+0x35/0x37
bpf_dispatcher_nop_func include/linux/bpf.h:1001 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2285 [inline]
bpf_trace_run2+0x1cd/0x3b0 kernel/trace/bpf_trace.c:2324
trace_contention_begin+0x142/0x190 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xdc/0x9c0 kernel/locking/qspinlock.c:405
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x217/0x280 kernel/locking/spinlock_debug.c:115
raw_spin_rq_lock_nested+0xa5/0x140 kernel/sched/core.c:545
raw_spin_rq_lock kernel/sched/sched.h:1355 [inline]
rq_lock kernel/sched/sched.h:1645 [inline]
__schedule+0x2ed/0x40b0 kernel/sched/core.c:6477
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
irqentry_exit+0x63/0x70 kernel/entry/common.c:439
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:copy_from_kernel_nofault+0x1c6/0x310 mm/maccess.c:41
Code: da 4c 89 ef e8 8b ae 24 00 eb d0 e8 a4 91 d4 ff eb 09 e8 9d 91 d4 ff 49 83 c7 02 31 ff 4c 89 e6 e8 6f 95 d4 ff 4d 85 e4 74 1c <41> 8a 1f e8 82 91 d4 ff 4c 89 f0 48 c1 e8 03 0f b6 04 28 84 c0 75
RSP: 0018:ffffc90003fdfa08 EFLAGS: 00000202
RAX: ffffffff81ac2cd1 RBX: 0000000069647561 RCX: ffff888051bf0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff1c3ea96
R10: fffffbfff1c3ea96 R11: 1ffffffff1c3ea95 R12: 0000000000000001
R13: ffff888055d82ff8 R14: ffff888055d82ffc R15: ffff888025a0d7f4
prepend_copy fs/d_path.c:49 [inline]
prepend fs/d_path.c:75 [inline]
prepend_name fs/d_path.c:100 [inline]
__prepend_path fs/d_path.c:132 [inline]
prepend_path+0x565/0xc20 fs/d_path.c:171
d_absolute_path+0x9e/0x140 fs/d_path.c:233
tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
tomoyo_realpath_from_path+0x2d5/0x5d0 security/tomoyo/realpath.c:271
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x1e3/0x600 security/tomoyo/file.c:723
security_file_ioctl+0x6c/0xa0 security/security.c:1568
__do_sys_ioctl fs/ioctl.c:864 [inline]
__se_sys_ioctl+0x48/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5ceaf8ebe9
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:00007f5cebdc8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5ceb1b6090 RCX: 00007f5ceaf8ebe9
RDX: 0000200000000580 RSI: 00000000c0045005 RDI: 0000000000000008
RBP: 00007f5cebdc8090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f5ceb1b6128 R14: 00007f5ceb1b6090 R15: 00007ffd920fb468
----------------
Code disassembly (best guess):
0: da 4c 89 ef fimull -0x11(%rcx,%rcx,4)
4: e8 8b ae 24 00 call 0x24ae94
9: eb d0 jmp 0xffffffdb
b: e8 a4 91 d4 ff call 0xffd491b4
10: eb 09 jmp 0x1b
12: e8 9d 91 d4 ff call 0xffd491b4
17: 49 83 c7 02 add $0x2,%r15
1b: 31 ff xor %edi,%edi
1d: 4c 89 e6 mov %r12,%rsi
20: e8 6f 95 d4 ff call 0xffd49594
25: 4d 85 e4 test %r12,%r12
28: 74 1c je 0x46
* 2a: 41 8a 1f mov (%r15),%bl <-- trapping instruction
2d: e8 82 91 d4 ff call 0xffd491b4
32: 4c 89 f0 mov %r14,%rax
35: 48 c1 e8 03 shr $0x3,%rax
39: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax
3d: 84 c0 test %al,%al
3f: 75 .byte 0x75