FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 ====================================================== WARNING: possible circular locking dependency detected 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 Not tainted ------------------------------------------------------ syz.2.1724/12205 is trying to acquire lock: ffffffff8dabeea0 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable kernel/printk/printk.c:1873 [inline] ffffffff8dabeea0 (console_owner){-...}-{0:0}, at: console_emit_next_record kernel/printk/printk.c:2907 [inline] ffffffff8dabeea0 (console_owner){-...}-{0:0}, at: console_flush_all+0x4ff/0xd70 kernel/printk/printk.c:2979 but task is already holding lock: ffff8880b933ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559 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:559 raw_spin_rq_lock kernel/sched/sched.h:1406 [inline] rq_lock kernel/sched/sched.h:1702 [inline] task_fork_fair+0x73/0x250 kernel/sched/fair.c:12710 sched_cgroup_fork+0x3cf/0x510 kernel/sched/core.c:4844 copy_process+0x439b/0x8f10 kernel/fork.c:2499 kernel_clone+0xfd/0x980 kernel/fork.c:2797 user_mode_thread+0xb4/0xf0 kernel/fork.c:2875 rest_init+0x23/0x2b0 init/main.c:712 start_kernel+0x3df/0x4c0 init/main.c:1103 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488 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:553 [inline] try_to_wake_up+0x9a/0x13e0 kernel/sched/core.c:4262 __wake_up_common+0x131/0x1e0 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:1821 serial8250_handle_irq+0x5d3/0x780 drivers/tty/serial/8250/8250_port.c:1929 serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1949 serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:127 __handle_irq_event_percpu+0x229/0x7c0 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+0x263/0xd10 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0xdf/0x250 arch/x86/kernel/irq.c:285 common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 orc_find arch/x86/kernel/unwind_orc.c:206 [inline] unwind_next_frame+0x1eb/0x23a0 arch/x86/kernel/unwind_orc.c:494 __unwind_start+0x5aa/0x880 arch/x86/kernel/unwind_orc.c:760 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xb2/0x170 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 save_stack+0x162/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x8d/0x400 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1093 [inline] free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588 vfree+0x181/0x7a0 mm/vmalloc.c:3355 delayed_vfree_work+0x56/0x70 mm/vmalloc.c:3276 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248 process_scheduled_works kernel/workqueue.c:3329 [inline] worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #2 (&tty->write_wait){-.-.}-{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 __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:1821 serial8250_handle_irq+0x5d3/0x780 drivers/tty/serial/8250/8250_port.c:1929 serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1949 serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:127 __handle_irq_event_percpu+0x229/0x7c0 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+0x263/0xd10 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0xdf/0x250 arch/x86/kernel/irq.c:285 common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 orc_find arch/x86/kernel/unwind_orc.c:206 [inline] unwind_next_frame+0x1eb/0x23a0 arch/x86/kernel/unwind_orc.c:494 __unwind_start+0x5aa/0x880 arch/x86/kernel/unwind_orc.c:760 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xb2/0x170 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 save_stack+0x162/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x8d/0x400 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1093 [inline] free_unref_page+0x64a/0xe40 mm/page_alloc.c:2588 vfree+0x181/0x7a0 mm/vmalloc.c:3355 delayed_vfree_work+0x56/0x70 mm/vmalloc.c:3276 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248 process_scheduled_works kernel/workqueue.c:3329 [inline] worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #1 (&port_lock_key){-.-.}-{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 uart_port_lock_irqsave include/linux/serial_core.h:618 [inline] serial8250_console_write+0xaa6/0x1090 drivers/tty/serial/8250/8250_port.c:3352 console_emit_next_record kernel/printk/printk.c:2913 [inline] console_flush_all+0x53f/0xd70 kernel/printk/printk.c:2979 console_unlock+0xae/0x290 kernel/printk/printk.c:3048 vprintk_emit kernel/printk/printk.c:2348 [inline] vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45 _printk+0xc8/0x100 kernel/printk/printk.c:2373 register_console+0xaa2/0x10a0 kernel/printk/printk.c:3581 univ8250_console_init+0x35/0x50 drivers/tty/serial/8250/8250_core.c:714 console_init+0xcc/0x680 kernel/printk/printk.c:3727 start_kernel+0x295/0x4c0 init/main.c:1038 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x148 -> #0 (console_owner){-...}-{0:0}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 console_lock_spinning_enable kernel/printk/printk.c:1873 [inline] console_emit_next_record kernel/printk/printk.c:2907 [inline] console_flush_all+0x514/0xd70 kernel/printk/printk.c:2979 console_unlock+0xae/0x290 kernel/printk/printk.c:3048 vprintk_emit kernel/printk/printk.c:2348 [inline] vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45 _printk+0xc8/0x100 kernel/printk/printk.c:2373 fail_dump lib/fault-inject.c:45 [inline] should_fail_ex+0x46c/0x5b0 lib/fault-inject.c:153 strncpy_from_user+0x38/0x300 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:186 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline] ____bpf_probe_read_user_str kernel/trace/bpf_trace.c:225 [inline] bpf_probe_read_user_str+0x26/0x70 kernel/trace/bpf_trace.c:222 ___bpf_prog_run+0x3e51/0xabd0 kernel/bpf/core.c:2011 __bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2252 bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline] __bpf_prog_run include/linux/filter.h:691 [inline] bpf_prog_run include/linux/filter.h:698 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2403 [inline] bpf_trace_run4+0x245/0x5a0 kernel/trace/bpf_trace.c:2446 __bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222 __traceiter_sched_switch+0x6c/0xc0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x252c/0x5d00 kernel/sched/core.c:6742 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 __x64_sys_execve+0x0/0xb0 include/linux/percpu-rwsem.h:118 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 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.2.1724/12205: #0: ffff8880b933ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559 #1: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #1: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #1: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline] #1: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x1d6/0x5a0 kernel/trace/bpf_trace.c:2446 #2: ffffffff8db9f2e0 (console_lock){+.+.}-{0:0}, at: vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45 #3: ffffffff8db9f350 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:334 [inline] #3: ffffffff8db9f350 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline] #3: ffffffff8db9f350 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:286 [inline] #3: ffffffff8db9f350 (console_srcu){....}-{0:0}, at: console_flush_all+0x12d/0xd70 kernel/printk/printk.c:2971 stack backtrace: CPU: 1 PID: 12205 Comm: syz.2.1724 Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 console_lock_spinning_enable kernel/printk/printk.c:1873 [inline] console_emit_next_record kernel/printk/printk.c:2907 [inline] console_flush_all+0x514/0xd70 kernel/printk/printk.c:2979 console_unlock+0xae/0x290 kernel/printk/printk.c:3048 vprintk_emit kernel/printk/printk.c:2348 [inline] vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45 _printk+0xc8/0x100 kernel/printk/printk.c:2373 fail_dump lib/fault-inject.c:45 [inline] should_fail_ex+0x46c/0x5b0 lib/fault-inject.c:153 strncpy_from_user+0x38/0x300 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:186 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline] ____bpf_probe_read_user_str kernel/trace/bpf_trace.c:225 [inline] bpf_probe_read_user_str+0x26/0x70 kernel/trace/bpf_trace.c:222 ___bpf_prog_run+0x3e51/0xabd0 kernel/bpf/core.c:2011 __bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2252 bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline] __bpf_prog_run include/linux/filter.h:691 [inline] bpf_prog_run include/linux/filter.h:698 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2403 [inline] bpf_trace_run4+0x245/0x5a0 kernel/trace/bpf_trace.c:2446 __bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222 __traceiter_sched_switch+0x6c/0xc0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x252c/0x5d00 kernel/sched/core.c:6742 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:__x64_sys_execve+0x0/0xb0 fs/exec.c:2143 Code: e9 1a e6 ff ff 48 c7 c7 e8 1e c0 8d e8 09 f0 ed ff e9 01 f6 ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 41 54 55 53 48 89 fb e8 20 2d 92 ff 48 8d 7b 60 48 b8 RSP: 0018:ffffc9000326ff20 EFLAGS: 00000246 RAX: ffffffffffffffff RBX: ffffc9000326ff58 RCX: 1ffffffff1fc7e91 RDX: 0000000000000000 RSI: 000000000000003b RDI: ffffc9000326ff58 RBP: ffffc9000326ff48 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8fe43717 R11: 0000000000000000 R12: 000000000000003b R13: 000000000000003b R14: 0000000000000000 R15: 0000000000000000 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3705775bd9 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:00007f370657e048 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00007f3705904110 RCX: 00007f3705775bd9 RDX: 00000000200001c0 RSI: 0000000020000100 RDI: 0000000020000000 RBP: 00007f370657e0a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 000000000000006e R14: 00007f3705904110 R15: 00007ffd37892188 CPU: 1 PID: 12205 Comm: syz.2.1724 Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 fail_dump lib/fault-inject.c:52 [inline] should_fail_ex+0x497/0x5b0 lib/fault-inject.c:153 strncpy_from_user+0x38/0x300 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:186 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline] ____bpf_probe_read_user_str kernel/trace/bpf_trace.c:225 [inline] bpf_probe_read_user_str+0x26/0x70 kernel/trace/bpf_trace.c:222 ___bpf_prog_run+0x3e51/0xabd0 kernel/bpf/core.c:2011 __bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2252 bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline] __bpf_prog_run include/linux/filter.h:691 [inline] bpf_prog_run include/linux/filter.h:698 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2403 [inline] bpf_trace_run4+0x245/0x5a0 kernel/trace/bpf_trace.c:2446 __bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222 __traceiter_sched_switch+0x6c/0xc0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x252c/0x5d00 kernel/sched/core.c:6742 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:__x64_sys_execve+0x0/0xb0 fs/exec.c:2143 Code: e9 1a e6 ff ff 48 c7 c7 e8 1e c0 8d e8 09 f0 ed ff e9 01 f6 ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 41 54 55 53 48 89 fb e8 20 2d 92 ff 48 8d 7b 60 48 b8 RSP: 0018:ffffc9000326ff20 EFLAGS: 00000246 RAX: ffffffffffffffff RBX: ffffc9000326ff58 RCX: 1ffffffff1fc7e91 RDX: 0000000000000000 RSI: 000000000000003b RDI: ffffc9000326ff58 RBP: ffffc9000326ff48 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8fe43717 R11: 0000000000000000 R12: 000000000000003b R13: 000000000000003b R14: 0000000000000000 R15: 0000000000000000 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3705775bd9 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:00007f370657e048 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00007f3705904110 RCX: 00007f3705775bd9 RDX: 00000000200001c0 RSI: 0000000020000100 RDI: 0000000020000000 RBP: 00007f370657e0a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 000000000000006e R14: 00007f3705904110 R15: 00007ffd37892188 process 'syz.2.1724' launched './file0' with NULL argv: empty string added ---------------- Code disassembly (best guess): 0: e9 1a e6 ff ff jmp 0xffffe61f 5: 48 c7 c7 e8 1e c0 8d mov $0xffffffff8dc01ee8,%rdi c: e8 09 f0 ed ff call 0xffedf01a 11: e9 01 f6 ff ff jmp 0xfffff617 16: 0f 1f 40 00 nopl 0x0(%rax) 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 41 54 push %r12 30: 55 push %rbp 31: 53 push %rbx 32: 48 89 fb mov %rdi,%rbx 35: e8 20 2d 92 ff call 0xff922d5a 3a: 48 8d 7b 60 lea 0x60(%rbx),%rdi 3e: 48 rex.W 3f: b8 .byte 0xb8