======================================
| [  247.205378][    C3] 1 lock held by swapper/3/0:
| [ 247.205578][ C3] #0: ffffc90000270ae8 ((&icsk->icsk_retransmit_timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1737) 
| [  247.206000][    C3]
| [  247.206000][    C3] stack backtrace:
[  247.206262][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  247.206267][    C3] Call Trace:
[  247.206271][    C3]  <IRQ>
[ 247.206273][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 247.206285][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 247.206290][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 247.206294][ C3] ? add_lock_to_list (kernel/locking/lockdep.c:1409 kernel/locking/lockdep.c:1437) 
[ 247.206299][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 247.206303][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 247.206307][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 247.206311][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 247.206314][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 247.206319][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 247.206323][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 247.206328][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.206339][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 247.206342][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 247.206347][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 247.206351][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 247.206354][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 247.206358][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 247.206362][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 247.206377][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 247.206381][ C3] ? __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:2376) 
[ 247.206395][ C3] ? call_timer_fn (kernel/time/timer.c:1748) 
[ 247.206398][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 247.206401][ C3] ? tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 247.206408][ C3] ? __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 247.206411][ C3] ? tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 247.206414][ C3] ? handle_softirqs (kernel/softirq.c:580) 
[ 247.206418][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 247.206421][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 247.206424][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 247.206430][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 247.206438][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 247.206441][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 247.206444][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 247.206449][ C3] __put_net (net/core/net_namespace.c:732) 
[ 247.206459][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 247.206462][ C3] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 247.206469][ C3] call_timer_fn (kernel/time/timer.c:1748) 
[ 247.206472][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1737) 
[ 247.206474][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1737) 
[ 247.206478][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1724) 
[ 247.206481][ C3] ? __pfx_sched_clock_cpu (kernel/sched/clock.c:389) 
[ 247.206489][ C3] ? __run_timers (kernel/time/timer.c:1798 kernel/time/timer.c:2372) 
[ 247.206493][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 247.206497][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.206502][ C3] __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2372) 
[ 247.206505][ C3] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 247.206509][ C3] ? __pfx___run_timers (kernel/time/timer.c:2343) 
[ 247.206514][ C3] ? 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) 
[ 247.206517][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 247.206520][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 247.206523][ C3] ? timer_expire_remote (kernel/time/timer.c:2384 kernel/time/timer.c:2376 kernel/time/timer.c:2135) 
[ 247.206529][ C3] timer_expire_remote (kernel/time/timer.c:2385 kernel/time/timer.c:2376 kernel/time/timer.c:2135) 
[ 247.206532][ C3] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 kernel/time/timer_migration.c:961) 
[ 247.206536][ C3] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:905) 
[ 247.206540][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 247.206544][ C3] ? tmigr_handle_remote_up (kernel/time/timer_migration.c:1035) 
[ 247.206547][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 247.206551][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.206556][ C3] tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 247.206560][ C3] ? __pfx_tmigr_handle_remote_up (kernel/time/timer_migration.c:1005) 
[ 247.206563][ C3] __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 247.206568][ C3] tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 247.206571][ C3] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1059) 
[ 247.206575][ C3] ? run_timer_softirq (./arch/x86/include/asm/jump_label.h:36 kernel/time/timer.c:342 kernel/time/timer.c:2406) 
[ 247.206578][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 247.206582][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.206585][ C3] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 247.206590][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 247.206595][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 247.206599][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 247.206601][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  247.206605][    C3]  </IRQ>
[  247.206606][    C3]  <TASK>
[ 247.206607][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 247.206610][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 247.206614][ C3] Code: f2 ce 00 c3 cc cc cc cc 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 83 17 28 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	f2 ce                	repnz (bad)
   2:	00 c3                	add    %al,%bl
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  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 83 17 28 00 	verw   0x281783(%rip)        # 0x2817ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  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:	e9 fc 54 02 00       	jmp    0x25501
   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
[  247.206617][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[  247.206622][    C3] RAX: 000000000044326d RBX: 1ffff9200002afc1 RCX: ffffffffa48125d9
[  247.206624][    C3] RDX: 0000000000000000 RSI: ffffffffa54a61cd RDI: ffffffffa4c58be0
[  247.206626][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005e766fa
[  247.206628][    C3] R10: ffff88802f3b37d3 R11: ffffffffa5611288 R12: 0000000000000000
[  247.206630][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 247.206633][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 247.206638][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 247.206640][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 247.206643][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 247.206650][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 247.206654][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 247.206663][ C3] do_idle (kernel/sched/idle.c:325) 
[ 247.206667][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 247.206670][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 247.206674][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 247.206679][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [  247.229979][    C3] RCU nest depth: 0, expected: 0
| [  247.230161][    C3] INFO: lockdep is turned off.
| [  247.230463][    C3] Preemption disabled at:
| [ 247.230465][ C3] 0x0 
[  247.230804][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  247.230806][    C3] Call Trace:
[  247.230808][    C3]  <IRQ>
[ 247.230810][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 247.230820][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 247.230832][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 247.230837][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 247.230840][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 247.230846][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.230853][ C3] ? 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) 
[ 247.230859][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 247.230862][ C3] ? 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) 
[ 247.230864][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 247.230871][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 247.230874][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 247.230880][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 247.230883][ C3] ? __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:2376) 
[ 247.230890][ C3] ? call_timer_fn (kernel/time/timer.c:1748) 
[ 247.230897][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 247.230900][ C3] ? tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 247.230904][ C3] ? __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 247.230907][ C3] ? tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 247.230910][ C3] ? handle_softirqs (kernel/softirq.c:580) 
[ 247.230916][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 247.230919][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 247.230922][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 247.230927][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 247.230931][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 247.230934][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 247.230936][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 247.230941][ C3] __put_net (net/core/net_namespace.c:732) 
[ 247.230946][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 247.230950][ C3] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 247.230954][ C3] call_timer_fn (kernel/time/timer.c:1748) 
[ 247.230957][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1737) 
[ 247.230960][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1737) 
[ 247.230963][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1724) 
[ 247.230966][ C3] ? __pfx_sched_clock_cpu (kernel/sched/clock.c:389) 
[ 247.230972][ C3] ? __run_timers (kernel/time/timer.c:1798 kernel/time/timer.c:2372) 
[ 247.230976][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 247.230981][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.230986][ C3] __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2372) 
[ 247.230989][ C3] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 247.230994][ C3] ? __pfx___run_timers (kernel/time/timer.c:2343) 
[ 247.230998][ C3] ? 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) 
[ 247.231001][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 247.231004][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 247.231008][ C3] ? timer_expire_remote (kernel/time/timer.c:2384 kernel/time/timer.c:2376 kernel/time/timer.c:2135) 
[ 247.231013][ C3] timer_expire_remote (kernel/time/timer.c:2385 kernel/time/timer.c:2376 kernel/time/timer.c:2135) 
[ 247.231017][ C3] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 kernel/time/timer_migration.c:961) 
[ 247.231020][ C3] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:905) 
[ 247.231025][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 247.231028][ C3] ? tmigr_handle_remote_up (kernel/time/timer_migration.c:1035) 
[ 247.231031][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 247.231034][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.231039][ C3] tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 247.231043][ C3] ? __pfx_tmigr_handle_remote_up (kernel/time/timer_migration.c:1005) 
[ 247.231046][ C3] __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 247.231050][ C3] tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 247.231054][ C3] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1059) 
[ 247.231058][ C3] ? run_timer_softirq (./arch/x86/include/asm/jump_label.h:36 kernel/time/timer.c:342 kernel/time/timer.c:2406) 
[ 247.231061][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 247.231064][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 247.231068][ C3] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 247.231074][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 247.231079][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 247.231083][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 247.231085][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[  247.231088][    C3]  </IRQ>
[  247.231089][    C3]  <TASK>
[ 247.231091][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 247.231094][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 247.231097][ C3] Code: f2 ce 00 c3 cc cc cc cc 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 83 17 28 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	f2 ce                	repnz (bad)
   2:	00 c3                	add    %al,%bl
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  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 83 17 28 00 	verw   0x281783(%rip)        # 0x2817ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  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:	e9 fc 54 02 00       	jmp    0x25501
   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
[  247.231100][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[  247.231103][    C3] RAX: 000000000044326d RBX: 1ffff9200002afc1 RCX: ffffffffa48125d9
[  247.231105][    C3] RDX: 0000000000000000 RSI: ffffffffa54a61cd RDI: ffffffffa4c58be0
[  247.231107][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005e766fa
[  247.231108][    C3] R10: ffff88802f3b37d3 R11: ffffffffa5611288 R12: 0000000000000000
[  247.231110][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 247.231114][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 247.231118][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 247.231120][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 247.231123][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 247.231127][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 247.231131][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 247.231137][ C3] do_idle (kernel/sched/idle.c:325) 
[ 247.231141][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 247.231144][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 247.231148][ C3] ? __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