======================================================== WARNING: possible irq lock inversion dependency detected 6.7.0-rc1-next-20231116-syzkaller #0 Not tainted -------------------------------------------------------- syz-executor.5/1015 just changed the state of lock: ffff888021a8cee8 (&new_timer->it_lock){-...}-{2:2}, at: posix_timer_fn+0x2d/0x3d0 kernel/time/posix-timers.c:318 but this lock took another, HARDIRQ-unsafe lock in the past: (&sighand->siglock){+.+.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sighand->siglock); local_irq_disable(); lock(&new_timer->it_lock); lock(&sighand->siglock); lock(&new_timer->it_lock); *** DEADLOCK *** 2 locks held by syz-executor.5/1015: #0: ffff888083425080 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #0: ffff888083425080 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: start_creating.part.0+0xb0/0x3a0 fs/debugfs/inode.c:370 #1: ffffffff8cfacf40 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] #1: ffffffff8cfacf40 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2152 [inline] #1: ffffffff8cfacf40 (rcu_callback){....}-{0:0}, at: rcu_core+0x7cc/0x16b0 kernel/rcu/tree.c:2431 the shortest dependencies between 2nd lock and 1st lock: -> (&sighand->siglock){+.+.}-{2:2} { HARDIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] class_spinlock_constructor include/linux/spinlock.h:530 [inline] ptrace_set_stopped kernel/ptrace.c:391 [inline] ptrace_attach+0x401/0x650 kernel/ptrace.c:478 __do_sys_ptrace+0x204/0x230 kernel/ptrace.c:1290 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a SOFTIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] class_spinlock_constructor include/linux/spinlock.h:530 [inline] ptrace_set_stopped kernel/ptrace.c:391 [inline] ptrace_attach+0x401/0x650 kernel/ptrace.c:478 __do_sys_ptrace+0x204/0x230 kernel/ptrace.c:1290 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] calculate_sigpending+0x44/0xa0 kernel/signal.c:197 ret_from_fork+0x23/0x80 arch/x86/kernel/process.c:143 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 } ... key at: [] __key.341+0x0/0x40 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] __do_sys_timer_delete kernel/time/posix-timers.c:1023 [inline] __se_sys_timer_delete kernel/time/posix-timers.c:1006 [inline] __x64_sys_timer_delete+0x16a/0x3e0 kernel/time/posix-timers.c:1006 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a -> (&new_timer->it_lock){-...}-{2:2} { IN-HARDIRQ-W at: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 posix_timer_fn+0x2d/0x3d0 kernel/time/posix-timers.c:318 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x20c/0xc20 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 refill_stock+0x179/0x210 mm/memcontrol.c:2377 obj_cgroup_uncharge_pages mm/memcontrol.c:3234 [inline] refill_obj_stock+0x322/0x500 mm/memcontrol.c:3506 memcg_slab_free_hook+0x144/0x2b0 mm/slab.h:572 slab_free mm/slub.c:3779 [inline] kmem_cache_free+0xe6/0x360 mm/slub.c:3806 i_callback+0x43/0x70 fs/inode.c:248 rcu_do_batch kernel/rcu/tree.c:2158 [inline] rcu_core+0x828/0x16b0 kernel/rcu/tree.c:2431 __do_softirq+0x216/0x8d5 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb5/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 write_comp_data+0x3/0x80 kernel/kcov.c:230 __orc_find+0xc4/0x130 arch/x86/kernel/unwind_orc.c:102 orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x329/0x2390 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x24/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3452 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc_lru+0x219/0x6f0 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:2953 [inline] alloc_inode+0xb3/0x220 fs/inode.c:261 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 debugfs_get_inode fs/debugfs/inode.c:72 [inline] __debugfs_create_file+0x11a/0x620 fs/debugfs/inode.c:429 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:1150 [inline] kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1288 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:5442 [inline] kvm_dev_ioctl+0x16ae/0x1bd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5484 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 itimer_delete kernel/time/posix-timers.c:1048 [inline] exit_itimers+0x255/0x560 kernel/time/posix-timers.c:1109 do_exit+0x629/0x2ad0 kernel/exit.c:845 do_group_exit+0xd3/0x2a0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a } ... key at: [] __key.0+0x0/0x40 ... acquired at: mark_usage kernel/locking/lockdep.c:4563 [inline] __lock_acquire+0x1347/0x3b10 kernel/locking/lockdep.c:5090 lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 posix_timer_fn+0x2d/0x3d0 kernel/time/posix-timers.c:318 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x20c/0xc20 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 refill_stock+0x179/0x210 mm/memcontrol.c:2377 obj_cgroup_uncharge_pages mm/memcontrol.c:3234 [inline] refill_obj_stock+0x322/0x500 mm/memcontrol.c:3506 memcg_slab_free_hook+0x144/0x2b0 mm/slab.h:572 slab_free mm/slub.c:3779 [inline] kmem_cache_free+0xe6/0x360 mm/slub.c:3806 i_callback+0x43/0x70 fs/inode.c:248 rcu_do_batch kernel/rcu/tree.c:2158 [inline] rcu_core+0x828/0x16b0 kernel/rcu/tree.c:2431 __do_softirq+0x216/0x8d5 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb5/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 write_comp_data+0x3/0x80 kernel/kcov.c:230 __orc_find+0xc4/0x130 arch/x86/kernel/unwind_orc.c:102 orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x329/0x2390 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x24/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3452 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc_lru+0x219/0x6f0 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:2953 [inline] alloc_inode+0xb3/0x220 fs/inode.c:261 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 debugfs_get_inode fs/debugfs/inode.c:72 [inline] __debugfs_create_file+0x11a/0x620 fs/debugfs/inode.c:429 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:1150 [inline] kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1288 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:5442 [inline] kvm_dev_ioctl+0x16ae/0x1bd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5484 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a stack backtrace: CPU: 0 PID: 1015 Comm: syz-executor.5 Not tainted 6.7.0-rc1-next-20231116-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_irq_inversion_bug.part.0+0x3e1/0x590 kernel/locking/lockdep.c:4079 print_irq_inversion_bug kernel/locking/lockdep.c:4032 [inline] check_usage_forwards kernel/locking/lockdep.c:4110 [inline] mark_lock_irq kernel/locking/lockdep.c:4242 [inline] mark_lock+0x570/0xc50 kernel/locking/lockdep.c:4677 mark_usage kernel/locking/lockdep.c:4563 [inline] __lock_acquire+0x1347/0x3b10 kernel/locking/lockdep.c:5090 lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162 posix_timer_fn+0x2d/0x3d0 kernel/time/posix-timers.c:318 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x20c/0xc20 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:refill_stock+0x179/0x210 mm/memcontrol.c:2377 Code: ea 03 80 3c 02 00 0f 85 a8 00 00 00 48 03 1c ed 60 0a a7 8c 48 89 df e8 65 69 ff ff e8 70 dc a8 ff 9c 58 f6 c4 02 75 17 fb 5b <5d> 41 5c 41 5d 41 5e c3 5b 5d 41 5c 41 5d 41 5e e9 42 1c 9b 08 e8 RSP: 0018:ffffc90000007ce0 EFLAGS: 00000246 RAX: 0000000000000006 RBX: ffff88807a7f2000 RCX: 1ffffffff23e50a2 RDX: 0000000000000000 RSI: ffffffff8accbfe0 RDI: ffffffff8b2f13e0 RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff23e31ec R10: ffffffff91f18f67 R11: 0000000000000003 R12: ffff88807a7f2000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 obj_cgroup_uncharge_pages mm/memcontrol.c:3234 [inline] refill_obj_stock+0x322/0x500 mm/memcontrol.c:3506 memcg_slab_free_hook+0x144/0x2b0 mm/slab.h:572 slab_free mm/slub.c:3779 [inline] kmem_cache_free+0xe6/0x360 mm/slub.c:3806 i_callback+0x43/0x70 fs/inode.c:248 rcu_do_batch kernel/rcu/tree.c:2158 [inline] rcu_core+0x828/0x16b0 kernel/rcu/tree.c:2431 __do_softirq+0x216/0x8d5 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb5/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:write_comp_data+0x3/0x80 kernel/kcov.c:230 Code: ab b3 7b 7e 81 e2 00 01 ff 00 75 0f 65 48 8b 05 93 b3 7b 7e 48 8b 80 f0 15 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 49 89 d2 <49> 89 f8 49 89 f1 65 48 8b 15 6f b3 7b 7e 65 8b 05 70 b3 7b 7e a9 RSP: 0018:ffffc90014b9f810 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8f9a1a50 RCX: ffffffff813a2bd4 RDX: ffffffff8aa000ab RSI: ffffffff8aa00086 RDI: 0000000000000006 RBP: ffffffff8f9a1a50 R08: 0000000000000006 R09: ffffffff8aa00086 R10: ffffffff8aa000ab R11: 0000000000000001 R12: ffffffff8aa00086 R13: ffffffff8aa000ab R14: dffffc0000000000 R15: ffffffff8f9a1a50 __orc_find+0xc4/0x130 arch/x86/kernel/unwind_orc.c:102 orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x329/0x2390 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x24/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3452 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc_lru+0x219/0x6f0 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:2953 [inline] alloc_inode+0xb3/0x220 fs/inode.c:261 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 debugfs_get_inode fs/debugfs/inode.c:72 [inline] __debugfs_create_file+0x11a/0x620 fs/debugfs/inode.c:429 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:1150 [inline] kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1288 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:5442 [inline] kvm_dev_ioctl+0x16ae/0x1bd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5484 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f4f8c27cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4f8adfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4f8c39bf80 RCX: 00007f4f8c27cae9 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003 RBP: 00007f4f8c2c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f4f8c39bf80 R15: 00007ffc7830e898 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 03 80 3c 02 00 0f add 0xf00023c(%rax),%eax 6: 85 a8 00 00 00 48 test %ebp,0x48000000(%rax) c: 03 1c ed 60 0a a7 8c add -0x7358f5a0(,%rbp,8),%ebx 13: 48 89 df mov %rbx,%rdi 16: e8 65 69 ff ff call 0xffff6980 1b: e8 70 dc a8 ff call 0xffa8dc90 20: 9c pushf 21: 58 pop %rax 22: f6 c4 02 test $0x2,%ah 25: 75 17 jne 0x3e 27: fb sti 28: 5b pop %rbx * 29: 5d pop %rbp <-- trapping instruction 2a: 41 5c pop %r12 2c: 41 5d pop %r13 2e: 41 5e pop %r14 30: c3 ret 31: 5b pop %rbx 32: 5d pop %rbp 33: 41 5c pop %r12 35: 41 5d pop %r13 37: 41 5e pop %r14 39: e9 42 1c 9b 08 jmp 0x89b1c80 3e: e8 .byte 0xe8