======================================
| [ 1099.186276][    C1] 1 lock held by iperf3/9072:
| [ 1099.186629][ C1] #0: ffffc900001c0d60 ((&icsk->icsk_retransmit_timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [ 1099.187358][    C1]
| [ 1099.187358][    C1] stack backtrace:
[ 1099.187795][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1099.187798][    C1] Call Trace:
[ 1099.187801][    C1]  <IRQ>
[ 1099.187805][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1099.187816][ C1] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 1099.187826][ C1] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 1099.187833][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 1099.187841][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 1099.187845][ C1] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 1099.187856][ C1] mark_lock (kernel/locking/lockdep.c:4754) 
[ 1099.187863][ C1] mark_usage (kernel/locking/lockdep.c:4643) 
[ 1099.187869][ C1] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 1099.187877][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 1099.187883][ C1] ? simple_pin_fs (fs/libfs.c:1066) 
[ 1099.187891][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1099.187899][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 1099.187904][ C1] ? simple_pin_fs (fs/libfs.c:1066) 
[ 1099.187910][ C1] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 1099.187915][ C1] ? simple_pin_fs (fs/libfs.c:1066) 
[ 1099.187919][ C1] simple_pin_fs (fs/libfs.c:1066) 
[ 1099.187925][ C1] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 1099.187931][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 1099.187941][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 1099.187945][ C1] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1099.187952][ C1] ? call_timer_fn (kernel/time/timer.c:1790) 
[ 1099.187959][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 1099.187964][ C1] ? handle_softirqs (kernel/softirq.c:580) 
[ 1099.187970][ C1] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1099.187975][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1099.187980][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1099.187987][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1099.187993][ C1] ? __rcu_read_lock (kernel/rcu/tree_plugin.h:416) 
[ 1099.187998][ C1] ? __fget_files (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 fs/file.c:1055) 
[ 1099.188004][ C1] ? fdget_pos (fs/file.c:1158 fs/file.c:1166 fs/file.c:1208) 
[ 1099.188009][ C1] ? ksys_read (fs/read_write.c:707) 
[ 1099.188016][ C1] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1099.188025][ C1] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1099.188034][ C1] __put_net (net/core/net_namespace.c:732) 
[ 1099.188041][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1099.188047][ C1] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1099.188056][ C1] call_timer_fn (kernel/time/timer.c:1790) 
[ 1099.188061][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1099.188065][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1099.188070][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 1099.188077][ C1] ? __run_timers (kernel/time/timer.c:1840 kernel/time/timer.c:2414) 
[ 1099.188082][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 1099.188088][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1099.188096][ C1] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 1099.188101][ C1] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1099.188109][ C1] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 23)) 
[ 1099.188117][ C1] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 1099.188125][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1099.188132][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1099.188138][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 1099.188143][ C1] ? run_timer_base (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1099.188151][ C1] run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1099.188157][ C1] run_timer_softirq (kernel/time/timer.c:2446) 
[ 1099.188162][ C1] handle_softirqs (kernel/softirq.c:580) 
[ 1099.188171][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1099.188176][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 1099.188181][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1099.188187][    C1]  </IRQ>
[ 1099.188190][    C1]  <TASK>
[ 1099.188193][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1099.188197][ C1] RIP: 0010:__rcu_read_lock (kernel/rcu/tree_plugin.h:416) 
[ 1099.188203][ C1] Code: 05 48 8d bb 04 04 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1f 8b 83 04 04 00 00 <3d> ff ff ff 3f 7f 07 5b 5d c3 cc cc cc cc 90 0f 0b 90 5b 5d c3 cc
All code
========
   0:	05 48 8d bb 04       	add    $0x4bb8d48,%eax
   5:	04 00                	add    $0x0,%al
   7:	00 48 89             	add    %cl,-0x77(%rax)
   a:	fa                   	cli
   b:	48 c1 ea 03          	shr    $0x3,%rdx
   f:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  13:	48 89 f8             	mov    %rdi,%rax
  16:	83 e0 07             	and    $0x7,%eax
  19:	83 c0 03             	add    $0x3,%eax
  1c:	38 d0                	cmp    %dl,%al
  1e:	7c 04                	jl     0x24
  20:	84 d2                	test   %dl,%dl
  22:	75 1f                	jne    0x43
  24:	8b 83 04 04 00 00    	mov    0x404(%rbx),%eax
  2a:*	3d ff ff ff 3f       	cmp    $0x3fffffff,%eax		<-- trapping instruction
  2f:	7f 07                	jg     0x38
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	90                   	nop
  39:	0f 0b                	ud2
  3b:	90                   	nop
  3c:	5b                   	pop    %rbx
  3d:	5d                   	pop    %rbp
  3e:	c3                   	ret
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	3d ff ff ff 3f       	cmp    $0x3fffffff,%eax
   5:	7f 07                	jg     0xe
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	90                   	nop
   f:	0f 0b                	ud2
  11:	90                   	nop
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	c3                   	ret
  15:	cc                   	int3
[ 1099.188208][    C1] RSP: 0018:ffffc90003d57df0 EFLAGS: 00000246
[ 1099.188214][    C1] RAX: 0000000000000001 RBX: ffff888009be2340 RCX: ffffffffb4e0724f
[ 1099.188218][    C1] RDX: 0000000000000000 RSI: 0000000000000007 RDI: ffff888009be2744
[ 1099.188221][    C1] RBP: ffff888009be2340 R08: 0000000000000000 R09: ffffed1001ce8c40
[ 1099.188225][    C1] R10: ffff88800e746203 R11: 0000000000000000 R12: ffff88800e746200
[ 1099.188228][    C1] R13: 0000000000000007 R14: 00007fd16cf66000 R15: 0000000000000010
[ 1099.188236][ C1] ? fdget_pos (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1152 fs/file.c:1166 fs/file.c:1208) 
[ 1099.188245][ C1] __fget_files (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 fs/file.c:1055) 
[ 1099.188254][ C1] fdget_pos (fs/file.c:1158 fs/file.c:1166 fs/file.c:1208) 
[ 1099.188261][ C1] ksys_read (fs/read_write.c:707) 
[ 1099.188267][ C1] ? __pfx_ksys_read (fs/read_write.c:703) 
[ 1099.188277][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1099.188284][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1099.188289][    C1] RIP: 0033:0x7fd16d7abb0c
[ 1099.188296][ C1] Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 d1 f5 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 7f d1 f5 ff 48
All code
========
   0:	ec                   	in     (%dx),%al
   1:	28 48 89             	sub    %cl,-0x77(%rax)
   4:	54                   	push   %rsp
   5:	24 18                	and    $0x18,%al
   7:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
   c:	89 7c 24 08          	mov    %edi,0x8(%rsp)
  10:	e8 29 d1 f5 ff       	call   0xfffffffffff5d13e
  15:	48 8b 54 24 18       	mov    0x18(%rsp),%rdx
  1a:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
  1f:	41 89 c0             	mov    %eax,%r8d
  22:	8b 7c 24 08          	mov    0x8(%rsp),%edi
  26:	31 c0                	xor    %eax,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 34                	ja     0x66
  32:	44 89 c7             	mov    %r8d,%edi
  35:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  3a:	e8 7f d1 f5 ff       	call   0xfffffffffff5d1be
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 34                	ja     0x3c
   8:	44 89 c7             	mov    %r8d,%edi
   b:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  10:	e8 7f d1 f5 ff       	call   0xfffffffffff5d194
  15:	48                   	rex.W
[ 1099.188301][    C1] RSP: 002b:00007fd16cf64d20 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 1099.188306][    C1] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fd16d7abb0c
[ 1099.188310][    C1] RDX: 0000000000000010 RSI: 00007fd16cf66000 RDI: 0000000000000007
[ 1099.188313][    C1] RBP: 00007fd16cf66000 R08: 0000000000000002 R09: 00007ffe032dd3af
[ 1099.188317][    C1] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000010
[ 1099.188319][    C1] R13: 0000000000000007 R14: 00007fd16d70c560 R15: 0000000000000000
| [ 1099.223735][    C1] RCU nest depth: 1, expected: 0
| [ 1099.224018][    C1] INFO: lockdep is turned off.
| [ 1099.224320][    C1] Preemption disabled at:
| [ 1099.224323][ C1] handle_softirqs (kernel/softirq.c:553) 
[ 1099.225140][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1099.225143][    C1] Call Trace:
[ 1099.225146][    C1]  <IRQ>
[ 1099.225149][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1099.225159][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 1099.225171][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1099.225178][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1099.225182][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 1099.225189][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1099.225196][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 1099.225205][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 1099.225210][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1099.225216][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 1099.225223][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1099.225228][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 1099.225235][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 1099.225239][ C1] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1099.225245][ C1] ? call_timer_fn (kernel/time/timer.c:1790) 
[ 1099.225251][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 1099.225255][ C1] ? handle_softirqs (kernel/softirq.c:580) 
[ 1099.225261][ C1] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1099.225265][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1099.225269][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1099.225274][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1099.225279][ C1] ? __rcu_read_lock (kernel/rcu/tree_plugin.h:416) 
[ 1099.225283][ C1] ? __fget_files (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 fs/file.c:1055) 
[ 1099.225288][ C1] ? fdget_pos (fs/file.c:1158 fs/file.c:1166 fs/file.c:1208) 
[ 1099.225291][ C1] ? ksys_read (fs/read_write.c:707) 
[ 1099.225295][ C1] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1099.225301][ C1] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1099.225308][ C1] __put_net (net/core/net_namespace.c:732) 
[ 1099.225312][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1099.225317][ C1] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1099.225325][ C1] call_timer_fn (kernel/time/timer.c:1790) 
[ 1099.225328][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1099.225331][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1099.225336][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 1099.225342][ C1] ? __run_timers (kernel/time/timer.c:1840 kernel/time/timer.c:2414) 
[ 1099.225346][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 1099.225355][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1099.225362][ C1] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 1099.225367][ C1] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1099.225375][ C1] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 23)) 
[ 1099.225382][ C1] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 1099.225390][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1099.225396][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1099.225402][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 1099.225407][ C1] ? run_timer_base (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1099.225414][ C1] run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1099.225418][ C1] run_timer_softirq (kernel/time/timer.c:2446) 
[ 1099.225423][ C1] handle_softirqs (kernel/softirq.c:580) 
[ 1099.225431][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1099.225436][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 1099.225442][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1099.225447][    C1]  </IRQ>
[ 1099.225449][    C1]  <TASK>
[ 1099.225452][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1099.225457][ C1] RIP: 0010:__rcu_read_lock (kernel/rcu/tree_plugin.h:416) 
[ 1099.225463][ C1] Code: 05 48 8d bb 04 04 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1f 8b 83 04 04 00 00 <3d> ff ff ff 3f 7f 07 5b 5d c3 cc cc cc cc 90 0f 0b 90 5b 5d c3 cc
All code
========
   0:	05 48 8d bb 04       	add    $0x4bb8d48,%eax
   5:	04 00                	add    $0x0,%al
   7:	00 48 89             	add    %cl,-0x77(%rax)
   a:	fa                   	cli
   b:	48 c1 ea 03          	shr    $0x3,%rdx
   f:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  13:	48 89 f8             	mov    %rdi,%rax
  16:	83 e0 07             	and    $0x7,%eax
  19:	83 c0 03             	add    $0x3,%eax
  1c:	38 d0                	cmp    %dl,%al
  1e:	7c 04                	jl     0x24
  20:	84 d2                	test   %dl,%dl
  22:	75 1f                	jne    0x43
  24:	8b 83 04 04 00 00    	mov    0x404(%rbx),%eax
  2a:*	3d ff ff ff 3f       	cmp    $0x3fffffff,%eax		<-- trapping instruction
  2f:	7f 07                	jg     0x38
  31:	5b                   	pop    %rbx
  32:	5d                   	pop    %rbp
  33:	c3                   	ret
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	90                   	nop
  39:	0f 0b                	ud2
  3b:	90                   	nop
  3c:	5b                   	pop    %rbx
  3d:	5d                   	pop    %rbp
  3e:	c3                   	ret
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	3d ff ff ff 3f       	cmp    $0x3fffffff,%eax
   5:	7f 07                	jg     0xe
   7:	5b                   	pop    %rbx
   8:	5d                   	pop    %rbp
   9:	c3                   	ret
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	90                   	nop
   f:	0f 0b                	ud2
  11:	90                   	nop
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	c3                   	ret
  15:	cc                   	int3
[ 1099.225468][    C1] RSP: 0018:ffffc90003d57df0 EFLAGS: 00000246
[ 1099.225474][    C1] RAX: 0000000000000001 RBX: ffff888009be2340 RCX: ffffffffb4e0724f
[ 1099.225478][    C1] RDX: 0000000000000000 RSI: 0000000000000007 RDI: ffff888009be2744
[ 1099.225481][    C1] RBP: ffff888009be2340 R08: 0000000000000000 R09: ffffed1001ce8c40
[ 1099.225485][    C1] R10: ffff88800e746203 R11: 0000000000000000 R12: ffff88800e746200
[ 1099.225488][    C1] R13: 0000000000000007 R14: 00007fd16cf66000 R15: 0000000000000010
[ 1099.225495][ C1] ? fdget_pos (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1152 fs/file.c:1166 fs/file.c:1208) 
[ 1099.225504][ C1] __fget_files (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 fs/file.c:1055) 
[ 1099.225513][ C1] fdget_pos (fs/file.c:1158 fs/file.c:1166 fs/file.c:1208) 
[ 1099.225519][ C1] ksys_read (fs/read_write.c:707) 
[ 1099.225524][ C1] ? __pfx_ksys_read (fs/read_write.c:703) 
[ 1099.225533][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1099.225540][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1099.225545][    C1] RIP: 0033:0x7fd16d7abb0c
[ 1099.225552][ C1] Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 d1 f5 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 7f d1 f5 ff 48
All code
========
   0:	ec                   	in     (%dx),%al
   1:	28 48 89             	sub    %cl,-0x77(%rax)
   4:	54                   	push   %rsp
   5:	24 18                	and    $0x18,%al
   7:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
   c:	89 7c 24 08          	mov    %edi,0x8(%rsp)
  10:	e8 29 d1 f5 ff       	call   0xfffffffffff5d13e
  15:	48 8b 54 24 18       	mov    0x18(%rsp),%rdx
  1a:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
  1f:	41 89 c0             	mov    %eax,%r8d
  22:	8b 7c 24 08          	mov    0x8(%rsp),%edi
  26:	31 c0                	xor    %eax,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 34                	ja     0x66
  32:	44 89 c7             	mov    %r8d,%edi
  35:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  3a:	e8 7f d1 f5 ff       	call   0xfffffffffff5d1be
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 34                	ja     0x3c
   8:	44 89 c7             	mov    %r8d,%edi
   b:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  10:	e8 7f d1 f5 ff       	call   0xfffffffffff5d194
  15:	48                   	rex.W
[ 1099.225557][    C1] RSP: 002b:00007fd16cf64d20 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 1099.225561][    C1] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fd16d7abb0c
[ 1099.225565][    C1] RDX: 0000000000000010 RSI: 00007fd16cf66000 RDI: 0000000000000007
[ 1099.225568][    C1] RBP: 00007fd16cf66000 R08: 0000000000000002 R09: 00007ffe032dd3af
[ 1099.225571][    C1] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000010
[ 1099.225574][    C1] R13: 0000000000000007 R14: 00007fd16d70c560 R15: 0000000000000000
| [ 1140.132778][    C2] INFO: lockdep is turned off.
| [ 1140.133087][    C2] Preemption disabled at:
| [ 1140.133091][ C2] 0x0 
| [ 1140.133554][    C2] Tainted: [W]=WARN
[ 1140.133555][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1140.133558][    C2] Call Trace:
[ 1140.133560][    C2]  <IRQ>
[ 1140.133563][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1140.133571][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 1140.133579][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1140.133584][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1140.133587][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 1140.133592][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1140.133597][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 1140.133603][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 1140.133606][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1140.133611][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 1140.133617][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1140.133620][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 1140.133626][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 1140.133630][ C2] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1140.133635][ C2] ? call_timer_fn (kernel/time/timer.c:1790) 
[ 1140.133639][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 1140.133642][ C2] ? handle_softirqs (kernel/softirq.c:580) 
[ 1140.133647][ C2] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1140.133650][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1140.133653][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1140.133658][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1140.133662][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 1140.133665][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 1140.133667][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1140.133670][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1140.133675][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 1140.133677][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1140.133680][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1140.133688][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1140.133692][ C2] __put_net (net/core/net_namespace.c:732) 
[ 1140.133695][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1140.133699][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1140.133705][ C2] call_timer_fn (kernel/time/timer.c:1790) 
[ 1140.133707][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1140.133709][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1140.133712][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 1140.133715][ C2] ? perf_event_task_tick (kernel/events/core.c:4455) 
[ 1140.133722][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1140.133727][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1140.133732][ C2] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 1140.133735][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1140.133740][ C2] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 1140.133743][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1140.133748][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 1140.133751][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1140.133755][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1140.133758][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 1140.133761][ C2] ? run_timer_base (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1140.133765][ C2] run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1140.133768][ C2] run_timer_softirq (kernel/time/timer.c:2446) 
[ 1140.133771][ C2] handle_softirqs (kernel/softirq.c:580) 
[ 1140.133776][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1140.133780][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 1140.133783][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1140.133786][    C2]  </IRQ>
[ 1140.133787][    C2]  <TASK>
[ 1140.133789][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1140.133793][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 1140.133799][ C2] Code: a0 d1 00 e9 c3 57 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 45 2b 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	a0 d1 00 e9 c3 57 02 	movabs 0xf000257c3e900d1,%al
   7:	00 0f 
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d c3 45 2b 00 	verw   0x2b45c3(%rip)        # 0x2b45eb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 1140.133804][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[ 1140.133809][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffb6ddea19
[ 1140.133813][    C2] RDX: ffffed1006c2667b RSI: ffffffffb72561e0 RDI: ffffffffb458879f
[ 1140.133816][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c2667a
[ 1140.133819][    C2] R10: ffff8880361333d3 R11: ffff88801ac58558 R12: 0000000000000000
[ 1140.133821][    C2] R13: ffff888001bf2340 R14: dffffc0000000000 R15: 0000000000000000
[ 1140.133825][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 1140.133830][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1140.133834][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 1140.133837][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1140.133839][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1140.133843][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 1140.133847][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 1140.133853][ C2] do_idle (kernel/sched/idle.c:325) 
[ 1140.133856][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1140.133859][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1140.133863][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 1140.133868][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [ 1213.866950][    C2] INFO: lockdep is turned off.
| [ 1213.867159][    C2] Preemption disabled at:
| [ 1213.867161][ C2] 0x0 
| [ 1213.867569][    C2] Tainted: [W]=WARN
[ 1213.867570][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1213.867573][    C2] Call Trace:
[ 1213.867575][    C2]  <IRQ>
[ 1213.867579][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1213.867591][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 1213.867601][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1213.867605][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1213.867608][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 1213.867615][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1213.867621][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 1213.867629][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 1213.867632][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1213.867639][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 1213.867644][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1213.867648][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 1213.867655][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 1213.867658][ C2] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1213.867665][ C2] ? call_timer_fn (kernel/time/timer.c:1790) 
[ 1213.867670][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 1213.867673][ C2] ? handle_softirqs (kernel/softirq.c:580) 
[ 1213.867681][ C2] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1213.867684][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1213.867687][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1213.867692][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1213.867697][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 1213.867700][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 1213.867703][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1213.867705][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1213.867710][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 1213.867713][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1213.867716][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1213.867722][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1213.867727][ C2] __put_net (net/core/net_namespace.c:732) 
[ 1213.867730][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 1213.867734][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1213.867740][ C2] call_timer_fn (kernel/time/timer.c:1790) 
[ 1213.867743][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1213.867745][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1213.867748][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 1213.867750][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1213.867755][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1213.867759][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 1213.867763][ C2] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 1213.867767][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 1213.867772][ C2] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 1213.867775][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 1213.867780][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 1213.867783][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1213.867787][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1213.867791][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 1213.867794][ C2] ? run_timer_base (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1213.867798][ C2] run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 1213.867801][ C2] run_timer_softirq (kernel/time/timer.c:2446) 
[ 1213.867804][ C2] handle_softirqs (kernel/softirq.c:580) 
[ 1213.867809][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1213.867812][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 1213.867815][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1213.867819][    C2]  </IRQ>
[ 1213.867820][    C2]  <TASK>
[ 1213.867822][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1213.867825][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 1213.867830][ C2] Code: a0 d1 00 e9 c3 57 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 45 2b 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	a0 d1 00 e9 c3 57 02 	movabs 0xf000257c3e900d1,%al
   7:	00 0f 
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d c3 45 2b 00 	verw   0x2b45c3(%rip)        # 0x2b45eb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 1213.867833][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[ 1213.867838][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffb6ddea19
[ 1213.867840][    C2] RDX: ffffed1006c2667b RSI: ffffffffb72561e0 RDI: ffffffffb458879f
[ 1213.867842][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c2667a
[ 1213.867843][    C2] R10: ffff8880361333d3 R11: ffffffffba8ffce0 R12: 0000000000000000
[ 1213.867845][    C2] R13: ffff888001bf2340 R14: dffffc0000000000 R15: 0000000000000000
[ 1213.867849][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 1213.867853][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1213.867857][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 1213.867860][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1213.867862][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1213.867865][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 1213.867869][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 1213.867875][ C2] do_idle (kernel/sched/idle.c:325) 
[ 1213.867879][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1213.867882][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1213.867885][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__might_resched:down_write:simple_recursive_removal:debugfs_remove:ref_tracker_dir_exit
handle_softirqs:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal