rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (1 GPs behind) idle=c61/1/0x4000000000000000 softirq=131544/131545 fqs=3 (detected by 0, t=10502 jiffies, g=185661, q=754 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 12630 Comm: syz-executor.0 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x20 kernel/kcov.c:297 Code: 66 2e 0f 1f 84 00 00 00 00 00 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 bc fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 <48> 8b 0c 24 89 f2 89 fe bf 05 00 00 00 e9 9e fe ff ff 66 66 2e 0f RSP: 0018:ffffc900001f0e38 EFLAGS: 00000046 RAX: 0000000000000001 RBX: ffff888021175b40 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 17eda3ed2fdb47da R13: ffff8880b9b2a600 R14: ffff8880b9b2a500 R15: 0000000000000001 FS: 00007fb180c21700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbe5745d718 CR3: 000000002af91000 CR4: 0000000000350ee0 Call Trace: trace_hrtimer_cancel include/trace/events/timer.h:293 [inline] debug_deactivate kernel/time/hrtimer.c:482 [inline] __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0xab7/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:6736 Code: 55 53 65 48 8b 1c 25 80 6f 02 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 42 12 d9 f7 e8 fd e0 07 f8 fb bf 01 00 00 00 d2 a7 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 40 f9 d8 RSP: 0018:ffffc90014e3f358 EFLAGS: 00000202 RAX: 0000000000000efd RBX: ffff88801e590000 RCX: 1ffffffff20d730e RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffed1003cb2000 R08: 0000000000000001 R09: ffffffff9067b9a7 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 irqentry_exit+0x31/0x80 kernel/entry/common.c:428 asm_sysvec_reschedule_ipi+0x1b/0x20 arch/x86/include/asm/idtentry.h:654 RIP: 0010:is_idle_task include/linux/sched.h:1888 [inline] RIP: 0010:__might_resched+0x199/0x2c0 kernel/sched/core.c:9756 Code: 84 2c ff ff ff 65 4c 8b 2c 25 80 6f 02 00 49 8d 7d 2c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 <83> e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 0a 01 00 00 41 f6 45 2c RSP: 0018:ffffc90014e3f428 EFLAGS: 00000217 RAX: ffff88801e59002c RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801e59002c RBP: ffffffff89d6d0c0 R08: 0000000000000001 R09: ffffffff9067b9a7 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000220 R13: ffff88801e590000 R14: ffff88801e590000 R15: 00000000000004df invalidate_mapping_pagevec+0x2d1/0x5c0 mm/truncate.c:544 drop_pagecache_sb+0xcf/0x2a0 fs/drop_caches.c:39 iterate_supers+0x13c/0x290 fs/super.c:694 drop_caches_sysctl_handler+0xdb/0x110 fs/drop_caches.c:62 proc_sys_call_handler+0x4a1/0x6e0 fs/proc/proc_sysctl.c:611 call_write_iter include/linux/fs.h:2058 [inline] do_iter_readv_writev+0x3d1/0x640 fs/read_write.c:742 do_iter_write+0x182/0x700 fs/read_write.c:868 vfs_iter_write+0x70/0xa0 fs/read_write.c:909 iter_file_splice_write+0x723/0xc70 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x110/0x180 fs/splice.c:936 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891 do_splice_direct+0x1a7/0x270 fs/splice.c:979 do_sendfile+0xae0/0x1240 fs/read_write.c:1262 __do_sys_sendfile64 fs/read_write.c:1321 [inline] __se_sys_sendfile64 fs/read_write.c:1313 [inline] __x64_sys_sendfile64+0x149/0x210 fs/read_write.c:1313 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fb17fa89109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb180c21168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fb17fb9bf60 RCX: 00007fb17fa89109 RDX: 0000000020002080 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007fb17fae30ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000869 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd352c3aff R14: 00007fb180c21300 R15: 0000000000022000 rcu: rcu_preempt kthread starved for 10496 jiffies! g185661 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:28656 pid: 17 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5116 [inline] __schedule+0xa00/0x4b30 kernel/sched/core.c:6428 schedule+0xd2/0x1f0 kernel/sched/core.c:6500 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1999 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2187 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 0 CPU: 0 PID: 8105 Comm: kworker/u4:5 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound toggle_allocation_gate Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:518 print_other_cpu_stall kernel/rcu/tree_stall.h:623 [inline] check_cpu_stall kernel/rcu/tree_stall.h:771 [inline] rcu_pending kernel/rcu/tree.c:3977 [inline] rcu_sched_clock_irq+0x2316/0x2370 kernel/rcu/tree.c:2675 update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1481 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x499/0x1110 kernel/smp.c:988 Code: 01 89 ee e8 99 94 0a 00 85 ed 74 47 48 8b 04 24 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 fc 83 c5 03 e8 39 98 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 21 0a 00 00 8b 43 08 31 RSP: 0018:ffffc9000682f950 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b9b401e0 RCX: 0000000000000000 RDX: ffff88806c3abb00 RSI: ffffffff816fdaf7 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffed101736803d R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1231 [inline] text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1419 text_poke_flush arch/x86/kernel/alternative.c:1589 [inline] text_poke_flush arch/x86/kernel/alternative.c:1586 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 jump_label_update+0x32f/0x410 kernel/jump_label.c:830 static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177 static_key_enable+0x16/0x20 kernel/jump_label.c:190 toggle_allocation_gate mm/kfence/core.c:808 [inline] toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:800 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [kworker/u4:5:8105] Modules linked in: irq event stamp: 4235586 hardirqs last enabled at (4235585): [] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 hardirqs last disabled at (4235586): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4187392): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (4187392): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (4187345): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (4187345): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 CPU: 0 PID: 8105 Comm: kworker/u4:5 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x499/0x1110 kernel/smp.c:988 Code: 01 89 ee e8 99 94 0a 00 85 ed 74 47 48 8b 04 24 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 fc 83 c5 03 e8 39 98 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 21 0a 00 00 8b 43 08 31 RSP: 0018:ffffc9000682f950 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b9b401e0 RCX: 0000000000000000 RDX: ffff88806c3abb00 RSI: ffffffff816fdaf7 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffed101736803d R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe4e3998000 CR3: 000000000ba8e000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1231 [inline] text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1419 text_poke_flush arch/x86/kernel/alternative.c:1589 [inline] text_poke_flush arch/x86/kernel/alternative.c:1586 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 jump_label_update+0x32f/0x410 kernel/jump_label.c:830 static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177 static_key_enable+0x16/0x20 kernel/jump_label.c:190 toggle_allocation_gate mm/kfence/core.c:808 [inline] toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:800 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 12630 Comm: syz-executor.0 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memory_is_nonzero mm/kasan/generic.c:101 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x63/0x180 mm/kasan/generic.c:189 Code: 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 49 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 <7e> 63 41 89 eb 41 83 e3 07 75 74 4c 8d 5a 07 48 85 d2 4c 0f 49 da RSP: 0018:ffffc900001f0ad0 EFLAGS: 00000083 RAX: fffffbfff20cf720 RBX: fffffbfff20cf721 RCX: ffffffff815df3eb RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff9067b900 RBP: fffffbfff20cf720 R08: 0000000000000000 R09: ffffffff9067b907 R10: fffffbfff20cf720 R11: 0000000000000001 R12: ffff88801e590ad8 R13: ffff88801e590000 R14: 0000000000044000 R15: 00000000000c4000 FS: 00007fb180c21700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbe5745d718 CR3: 000000002af91000 CR4: 0000000000350ee0 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] hlock_class kernel/locking/lockdep.c:227 [inline] check_wait_context kernel/locking/lockdep.c:4727 [inline] __lock_acquire+0x3eb/0x5660 kernel/locking/lockdep.c:5003 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 debug_object_deactivate lib/debugobjects.c:732 [inline] debug_object_deactivate+0x101/0x300 lib/debugobjects.c:720 debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline] debug_deactivate kernel/time/hrtimer.c:481 [inline] __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0x3f8/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:6736 Code: 55 53 65 48 8b 1c 25 80 6f 02 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 42 12 d9 f7 e8 fd e0 07 f8 fb bf 01 00 00 00 d2 a7 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 40 f9 d8 RSP: 0018:ffffc90014e3f358 EFLAGS: 00000202 RAX: 0000000000000efd RBX: ffff88801e590000 RCX: 1ffffffff20d730e RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffed1003cb2000 R08: 0000000000000001 R09: ffffffff9067b9a7 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 irqentry_exit+0x31/0x80 kernel/entry/common.c:428 asm_sysvec_reschedule_ipi+0x1b/0x20 arch/x86/include/asm/idtentry.h:654 RIP: 0010:is_idle_task include/linux/sched.h:1888 [inline] RIP: 0010:__might_resched+0x199/0x2c0 kernel/sched/core.c:9756 Code: 84 2c ff ff ff 65 4c 8b 2c 25 80 6f 02 00 49 8d 7d 2c 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 <83> e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 0a 01 00 00 41 f6 45 2c RSP: 0018:ffffc90014e3f428 EFLAGS: 00000217 RAX: ffff88801e59002c RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801e59002c RBP: ffffffff89d6d0c0 R08: 0000000000000001 R09: ffffffff9067b9a7 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000220 R13: ffff88801e590000 R14: ffff88801e590000 R15: 00000000000004df invalidate_mapping_pagevec+0x2d1/0x5c0 mm/truncate.c:544 drop_pagecache_sb+0xcf/0x2a0 fs/drop_caches.c:39 iterate_supers+0x13c/0x290 fs/super.c:694 drop_caches_sysctl_handler+0xdb/0x110 fs/drop_caches.c:62 proc_sys_call_handler+0x4a1/0x6e0 fs/proc/proc_sysctl.c:611 call_write_iter include/linux/fs.h:2058 [inline] do_iter_readv_writev+0x3d1/0x640 fs/read_write.c:742 do_iter_write+0x182/0x700 fs/read_write.c:868 vfs_iter_write+0x70/0xa0 fs/read_write.c:909 iter_file_splice_write+0x723/0xc70 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x110/0x180 fs/splice.c:936 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891 do_splice_direct+0x1a7/0x270 fs/splice.c:979 do_sendfile+0xae0/0x1240 fs/read_write.c:1262 __do_sys_sendfile64 fs/read_write.c:1321 [inline] __se_sys_sendfile64 fs/read_write.c:1313 [inline] __x64_sys_sendfile64+0x149/0x210 fs/read_write.c:1313 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fb17fa89109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb180c21168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fb17fb9bf60 RCX: 00007fb17fa89109 RDX: 0000000020002080 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007fb17fae30ad R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000869 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd352c3aff R14: 00007fb180c21300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 7: 00 00 00 a: 48 8b 0c 24 mov (%rsp),%rcx e: 0f b7 d6 movzwl %si,%edx 11: 0f b7 f7 movzwl %di,%esi 14: bf 03 00 00 00 mov $0x3,%edi 19: e9 bc fe ff ff jmpq 0xfffffeda 1e: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 25: 00 00 00 00 29: 90 nop * 2a: 48 8b 0c 24 mov (%rsp),%rcx <-- trapping instruction 2e: 89 f2 mov %esi,%edx 30: 89 fe mov %edi,%esi 32: bf 05 00 00 00 mov $0x5,%edi 37: e9 9e fe ff ff jmpq 0xfffffeda 3c: 66 data16 3d: 66 data16 3e: 2e cs 3f: 0f .byte 0xf