FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 ====================================================== WARNING: possible circular locking dependency detected 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 Not tainted ------------------------------------------------------ syz.3.760/8884 is trying to acquire lock: ffffffff8e4d1e00 (console_owner){-.-.}-{0:0}, at: console_lock_spinning_enable+0x9f/0xd0 kernel/printk/printk.c:1924 but task is already holding lock: ffff8880b843a2d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:614 [inline] ffff8880b843a2d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:599 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:606 raw_spin_rq_lock kernel/sched/sched.h:1532 [inline] task_rq_lock+0xcf/0x490 kernel/sched/core.c:708 cgroup_move_task+0x81/0x2a0 kernel/sched/psi.c:1161 css_set_move_task+0x288/0x5f0 kernel/cgroup/cgroup.c:918 cgroup_post_fork+0x201/0x9e0 kernel/cgroup/cgroup.c:6754 copy_process+0x5cfc/0x76a0 kernel/fork.c:2413 kernel_clone+0xfc/0x960 kernel/fork.c:2599 user_mode_thread+0xc7/0x110 kernel/fork.c:2677 rest_init+0x23/0x2b0 init/main.c:710 start_kernel+0x3ee/0x4d0 init/main.c:1102 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:4226 __wake_up_common+0x135/0x1f0 kernel/sched/wait.c:89 __wake_up_common_lock kernel/sched/wait.c:106 [inline] __wake_up+0x31/0x60 kernel/sched/wait.c:127 tty_port_default_wakeup+0x2a/0x40 drivers/tty/tty_port.c:69 serial8250_tx_chars+0x68e/0x860 drivers/tty/serial/8250/8250_port.c:1838 serial8250_handle_irq+0x761/0xcb0 drivers/tty/serial/8250/8250_port.c:1946 serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1966 serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:86 __handle_irq_event_percpu+0x229/0x7d0 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+0x28e/0xab0 kernel/irq/chip.c:789 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+0x61/0xe0 arch/x86/kernel/irq.c:285 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 variable_ffs arch/x86/include/asm/bitops.h:318 [inline] handle_softirqs+0x1dd/0x8e0 kernel/softirq.c:567 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 console_flush_all+0x9a2/0xc60 kernel/printk/printk.c:3227 __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 kauditd_printk_skb kernel/audit.c:546 [inline] kauditd_hold_skb+0x205/0x250 kernel/audit.c:581 kauditd_send_queue+0x236/0x290 kernel/audit.c:766 kauditd_thread+0x623/0xa70 kernel/audit.c:890 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5d4/0x6f0 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:105 [inline] __wake_up+0x1c/0x60 kernel/sched/wait.c:127 tty_port_default_wakeup+0x2a/0x40 drivers/tty/tty_port.c:69 serial8250_tx_chars+0x68e/0x860 drivers/tty/serial/8250/8250_port.c:1838 serial8250_handle_irq+0x761/0xcb0 drivers/tty/serial/8250/8250_port.c:1946 serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1966 serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:86 __handle_irq_event_percpu+0x229/0x7d0 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+0x28e/0xab0 kernel/irq/chip.c:789 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/0x4c0 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:3415 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:513 console_init+0x14f/0x680 kernel/printk/printk.c:4323 start_kernel+0x29f/0x4d0 init/main.c:1036 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:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240 lock_acquire kernel/locking/lockdep.c:5871 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828 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:193 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:310 [inline] bpf_probe_read_compat_str+0xe8/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_b0c6ebf0b810dd9c+0x5a/0x60 bpf_dispatcher_nop_func include/linux/bpf.h:1322 [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:2258 [inline] bpf_trace_run2+0x230/0x590 kernel/trace/bpf_trace.c:2299 __bpf_trace_tlb_flush+0xd1/0x110 include/trace/events/tlb.h:38 __do_trace_tlb_flush include/trace/events/tlb.h:38 [inline] trace_tlb_flush+0xe4/0x160 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x2b1/0x7f0 arch/x86/mm/tlb.c:932 context_switch kernel/sched/core.c:5380 [inline] __schedule+0xf4a/0x5de0 kernel/sched/core.c:6785 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108 irqentry_exit+0x36/0x90 kernel/entry/common.c:307 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 get_current arch/x86/include/asm/current.h:25 [inline] syscall_enter_from_user_mode_work include/linux/entry-common.h:167 [inline] syscall_enter_from_user_mode include/linux/entry-common.h:200 [inline] do_syscall_64+0x9a/0x4c0 arch/x86/entry/syscall_64.c:90 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 *** 4 locks held by syz.3.760/8884: #0: ffff8880b843a2d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:614 [inline] #0: ffff8880b843a2d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:599 #1: ffffffff8e5c4880 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff8e5c4880 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #1: ffffffff8e5c4880 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline] #1: ffffffff8e5c4880 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1b6/0x590 kernel/trace/bpf_trace.c:2299 #2: ffffffff8e5b2240 (console_lock){+.+.}-{0:0}, at: _printk+0xc7/0x100 kernel/printk/printk.c:2475 #3: ffffffff8e5b22b0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline] #3: ffffffff8e5b22b0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline] #3: ffffffff8e5b22b0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline] #3: ffffffff8e5b22b0 (console_srcu){....}-{0:0}, at: console_flush_all+0x158/0xc60 kernel/printk/printk.c:3203 stack backtrace: CPU: 0 UID: 0 PID: 8884 Comm: syz.3.760 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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:2046 check_noncircular+0x14c/0x170 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3168 [inline] check_prevs_add kernel/locking/lockdep.c:3287 [inline] validate_chain kernel/locking/lockdep.c:3911 [inline] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240 lock_acquire kernel/locking/lockdep.c:5871 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828 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:193 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:310 [inline] bpf_probe_read_compat_str+0xe8/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_b0c6ebf0b810dd9c+0x5a/0x60 bpf_dispatcher_nop_func include/linux/bpf.h:1322 [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:2258 [inline] bpf_trace_run2+0x230/0x590 kernel/trace/bpf_trace.c:2299 __bpf_trace_tlb_flush+0xd1/0x110 include/trace/events/tlb.h:38 __do_trace_tlb_flush include/trace/events/tlb.h:38 [inline] trace_tlb_flush+0xe4/0x160 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x2b1/0x7f0 arch/x86/mm/tlb.c:932 context_switch kernel/sched/core.c:5380 [inline] __schedule+0xf4a/0x5de0 kernel/sched/core.c:6785 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108 irqentry_exit+0x36/0x90 kernel/entry/common.c:307 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:167 [inline] RIP: 0010:syscall_enter_from_user_mode include/linux/entry-common.h:200 [inline] RIP: 0010:do_syscall_64+0x9a/0x4c0 arch/x86/entry/syscall_64.c:90 Code: 00 48 8b 7d 08 e8 66 5c 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 a6 4e 44 f6 90 90 e8 8f 4c 44 f6 fb 65 48 8b 05 9e 2f 4d 08 <48> 8b 50 08 f6 c2 3f 0f 85 95 02 00 00 90 90 41 81 fc d3 01 00 00 RSP: 0018:ffffc9000fee7f28 EFLAGS: 00000202 RAX: ffff88805c0c2440 RBX: ffffc9000fee7f58 RCX: ffffffff81c3ebff RDX: 0000000000000000 RSI: ffffffff8de19d08 RDI: ffffffff8c1578a0 RBP: ffffc9000fee7f48 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90a80f57 R11: 0000000000000000 R12: 00000000000001af R13: 00000000000001af R14: 0000000000000000 R15: 0000000000000000 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2f8b78e929 Code: Unable to access opcode bytes at 0x7f2f8b78e8ff. RSP: 002b:00007f2f8c5e7038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007f2f8b9b6080 RCX: 00007f2f8b78e929 RDX: 0000200000000200 RSI: 0000000000000001 RDI: 0000000000000005 RBP: 00007f2f8c5e7090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f2f8b9b6080 R15: 00007fff602ce468 CPU: 0 UID: 0 PID: 8884 Comm: syz.3.760 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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:193 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:310 [inline] bpf_probe_read_compat_str+0xe8/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_b0c6ebf0b810dd9c+0x5a/0x60 bpf_dispatcher_nop_func include/linux/bpf.h:1322 [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:2258 [inline] bpf_trace_run2+0x230/0x590 kernel/trace/bpf_trace.c:2299 __bpf_trace_tlb_flush+0xd1/0x110 include/trace/events/tlb.h:38 __do_trace_tlb_flush include/trace/events/tlb.h:38 [inline] trace_tlb_flush+0xe4/0x160 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x2b1/0x7f0 arch/x86/mm/tlb.c:932 context_switch kernel/sched/core.c:5380 [inline] __schedule+0xf4a/0x5de0 kernel/sched/core.c:6785 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108 irqentry_exit+0x36/0x90 kernel/entry/common.c:307 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:167 [inline] RIP: 0010:syscall_enter_from_user_mode include/linux/entry-common.h:200 [inline] RIP: 0010:do_syscall_64+0x9a/0x4c0 arch/x86/entry/syscall_64.c:90 Code: 00 48 8b 7d 08 e8 66 5c 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 a6 4e 44 f6 90 90 e8 8f 4c 44 f6 fb 65 48 8b 05 9e 2f 4d 08 <48> 8b 50 08 f6 c2 3f 0f 85 95 02 00 00 90 90 41 81 fc d3 01 00 00 RSP: 0018:ffffc9000fee7f28 EFLAGS: 00000202 RAX: ffff88805c0c2440 RBX: ffffc9000fee7f58 RCX: ffffffff81c3ebff RDX: 0000000000000000 RSI: ffffffff8de19d08 RDI: ffffffff8c1578a0 RBP: ffffc9000fee7f48 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90a80f57 R11: 0000000000000000 R12: 00000000000001af R13: 00000000000001af R14: 0000000000000000 R15: 0000000000000000 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2f8b78e929 Code: Unable to access opcode bytes at 0x7f2f8b78e8ff. RSP: 002b:00007f2f8c5e7038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007f2f8b9b6080 RCX: 00007f2f8b78e929 RDX: 0000200000000200 RSI: 0000000000000001 RDI: 0000000000000005 RBP: 00007f2f8c5e7090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f2f8b9b6080 R15: 00007fff602ce468 CIFS: Unable to determine destination address ---------------- Code disassembly (best guess): 0: 00 48 8b add %cl,-0x75(%rax) 3: 7d 08 jge 0xd 5: e8 66 5c 00 00 call 0x5c70 a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 14: 90 nop 15: e8 a6 4e 44 f6 call 0xf6444ec0 1a: 90 nop 1b: 90 nop 1c: e8 8f 4c 44 f6 call 0xf6444cb0 21: fb sti 22: 65 48 8b 05 9e 2f 4d mov %gs:0x84d2f9e(%rip),%rax # 0x84d2fc8 29: 08 * 2a: 48 8b 50 08 mov 0x8(%rax),%rdx <-- trapping instruction 2e: f6 c2 3f test $0x3f,%dl 31: 0f 85 95 02 00 00 jne 0x2cc 37: 90 nop 38: 90 nop 39: 41 81 fc d3 01 00 00 cmp $0x1d3,%r12d