======================================
| [ 18.365557][ C3] #0: ffff8880097c0220 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock_maybe_expand (./arch/x86/include/asm/jump_label.h:36 ./include/linux/mmap_lock.h:36 ./include/linux/mmap_lock.h:186 mm/mmap.c:1831) 
| [ 18.366124][ C3] #1: ffffffffa17774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   18.366669][    C3]
| [   18.366669][    C3] stack backtrace:
[   18.367146][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.367150][    C3] Call Trace:
[   18.367154][    C3]  <IRQ>
[ 18.367157][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.367169][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 18.367178][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 18.367187][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 18.367196][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 18.367206][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 18.367212][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 18.367218][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 18.367224][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.367232][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 18.367237][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 18.367246][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.367253][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 18.367258][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 18.367266][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 18.367272][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 18.367277][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 18.367284][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 18.367291][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 18.367299][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 18.367303][ 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) 
[ 18.367310][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.367313][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 18.367316][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.367322][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 18.367328][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.367332][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.367336][ C3] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 18.367342][ C3] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 18.367345][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 18.367347][ C3] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 18.367352][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.367356][ C3] ? __vmf_anon_prepare (mm/memory.c:3434) 
[ 18.367362][ C3] ? do_anonymous_page (mm/internal.h:410 mm/memory.c:4996) 
[ 18.367367][ C3] __put_net (net/core/net_namespace.c:732) 
[ 18.367372][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.367376][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.367378][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.367382][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.367386][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.367389][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.367392][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 18.367395][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.367399][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.367404][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 18.367409][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.367412][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.367415][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   18.367418][    C3]  </IRQ>
[   18.367420][    C3]  <TASK>
[ 18.367421][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.367424][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.367429][ C3] Code: 74 24 10 e8 c1 1e 83 fd 48 89 ef e8 79 71 83 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> fa 6e 77 fd 65 8b 05 13 6d 97 02 85 c0 74 0e 5b 5d c3 cc cc cc
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	c1 1e 83             	rcrl   $0x83,(%rsi)
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 79 71 83 fd       	call   0xfffffffffd837189
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 fa 6e 77 fd       	call   0xfffffffffd776f29		<-- trapping instruction
  2f:	65 8b 05 13 6d 97 02 	mov    %gs:0x2976d13(%rip),%eax        # 0x2976d49
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	e8 fa 6e 77 fd       	call   0xfffffffffd776eff
   5:	65 8b 05 13 6d 97 02 	mov    %gs:0x2976d13(%rip),%eax        # 0x2976d1f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[   18.367432][    C3] RSP: 0018:ffffc90000af7698 EFLAGS: 00000206
[   18.367435][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000080
[   18.367437][    C3] RDX: 0000000000000000 RSI: ffffffffa128f4e4 RDI: 0000000000000001
[   18.367439][    C3] RBP: ffff8880010bd080 R08: 0000000000000001 R09: 0000000000000001
[   18.367440][    C3] R10: ffffffffa21e68d7 R11: ffff8880010bd098 R12: ffff8880010bd080
[   18.367442][    C3] R13: ffffea00002fbb80 R14: ffff888001942040 R15: ffff88800beeed88
[ 18.367448][ C3] get_partial_node.part.0 (mm/slub.c:2902) 
[ 18.367454][ C3] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 18.367458][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.367462][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.367465][ C3] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 18.367469][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.367471][ C3] kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 18.367476][ C3] __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.367480][ C3] __vmf_anon_prepare (mm/memory.c:3434) 
[ 18.367484][ C3] do_anonymous_page (mm/internal.h:410 mm/memory.c:4996) 
[ 18.367490][ C3] handle_pte_fault (mm/memory.c:5997) 
[ 18.367493][ C3] ? __pmd_alloc (mm/memory.c:6660) 
[ 18.367496][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.367500][ C3] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 18.367503][ 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) 
[ 18.367508][ C3] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 18.367513][ C3] __handle_mm_fault (mm/memory.c:6140) 
[ 18.367517][ C3] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 18.367520][ C3] ? mt_find (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 lib/maple_tree.c:6904) 
[ 18.367529][ C3] handle_mm_fault (mm/memory.c:6321) 
[ 18.367533][ C3] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 18.367539][ C3] faultin_page (mm/gup.c:1195 (discriminator 2)) 
[ 18.367544][ C3] __get_user_pages (mm/gup.c:1493) 
[ 18.367549][ C3] ? __pfx___get_user_pages (mm/gup.c:1425) 
[ 18.367557][ C3] get_user_pages_remote (mm/gup.c:1759 mm/gup.c:2661) 
[ 18.367560][ C3] ? down_read (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1255 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) 
[ 18.367564][ C3] ? __pfx_get_user_pages_remote (mm/gup.c:2654) 
[ 18.367568][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.367573][ C3] get_arg_page (fs/exec.c:157) 
[ 18.367579][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.367583][ C3] ? __pfx_get_arg_page (fs/exec.c:139) 
[ 18.367586][ C3] ? __might_fault (mm/memory.c:7151 mm/memory.c:7145) 
[ 18.367588][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.367593][ C3] copy_string_kernel (fs/exec.c:616) 
[ 18.367597][ C3] ? count.constprop.0.isra.0 (fs/exec.c:384) 
[ 18.367601][ C3] do_execveat_common.isra.0 (fs/exec.c:1879) 
[ 18.367607][ C3] __x64_sys_execve (fs/exec.c:2053) 
[ 18.367612][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.367616][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.367618][    C3] RIP: 0033:0x7f46a78fa40b
[ 18.367624][ C3] Code: c0 75 03 5f ff e7 c3 48 8b 0d f1 a9 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 80 00 00 00 00 f3 0f 1e fa b8 3b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c5 a9 1b 00 f7 d8 64 89 01 48
All code
========
   0:	c0 75 03 5f          	shlb   $0x5f,0x3(%rbp)
   4:	ff e7                	jmp    *%rdi
   6:	c3                   	ret
   7:	48 8b 0d f1 a9 1b 00 	mov    0x1ba9f1(%rip),%rcx        # 0x1ba9ff
   e:	f7 d8                	neg    %eax
  10:	64 89 01             	mov    %eax,%fs:(%rcx)
  13:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  17:	c3                   	ret
  18:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 3b 00 00 00       	mov    $0x3b,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d c5 a9 1b 00 	mov    0x1ba9c5(%rip),%rcx        # 0x1ba9ff
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d c5 a9 1b 00 	mov    0x1ba9c5(%rip),%rcx        # 0x1ba9d5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   18.367626][    C3] RSP: 002b:00007ffe281bb008 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
[   18.367630][    C3] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46a78fa40b
[   18.367632][    C3] RDX: 000055f55971d5c0 RSI: 000055f559710d00 RDI: 000055f559724960
[   18.367633][    C3] RBP: 000055f559724960 R08: 000055f55971ce70 R09: 0000000000000020
[   18.367635][    C3] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff
[   18.367636][    C3] R13: 000055f559710d00 R14: 000055f55971d5c0 R15: 000055f55970c620
| [   18.398473][    C3] RCU nest depth: 0, expected: 0
| [   18.398696][    C3] INFO: lockdep is turned off.
| [   18.399045][    C3] Preemption disabled at:
| [ 18.399047][ C3] __slab_alloc.constprop.0 (mm/slub.c:3945) 
[   18.399510][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.399512][    C3] Call Trace:
[   18.399514][    C3]  <IRQ>
[ 18.399517][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.399527][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 18.399535][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.399540][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.399544][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.399548][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.399554][ 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) 
[ 18.399562][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.399564][ 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) 
[ 18.399568][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.399574][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.399577][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 18.399585][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 18.399588][ 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) 
[ 18.399595][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.399599][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 18.399602][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.399608][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 18.399615][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.399620][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.399624][ C3] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 18.399627][ C3] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 18.399630][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 18.399633][ C3] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 18.399637][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.399642][ C3] ? __vmf_anon_prepare (mm/memory.c:3434) 
[ 18.399647][ C3] ? do_anonymous_page (mm/internal.h:410 mm/memory.c:4996) 
[ 18.399652][ C3] __put_net (net/core/net_namespace.c:732) 
[ 18.399657][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.399662][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.399664][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.399667][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.399674][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.399678][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.399681][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 18.399685][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.399689][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.399694][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 18.399699][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.399702][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.399705][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   18.399709][    C3]  </IRQ>
[   18.399711][    C3]  <TASK>
[ 18.399713][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.399716][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.399720][ C3] Code: 74 24 10 e8 c1 1e 83 fd 48 89 ef e8 79 71 83 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> fa 6e 77 fd 65 8b 05 13 6d 97 02 85 c0 74 0e 5b 5d c3 cc cc cc
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	c1 1e 83             	rcrl   $0x83,(%rsi)
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 79 71 83 fd       	call   0xfffffffffd837189
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 fa 6e 77 fd       	call   0xfffffffffd776f29		<-- trapping instruction
  2f:	65 8b 05 13 6d 97 02 	mov    %gs:0x2976d13(%rip),%eax        # 0x2976d49
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	e8 fa 6e 77 fd       	call   0xfffffffffd776eff
   5:	65 8b 05 13 6d 97 02 	mov    %gs:0x2976d13(%rip),%eax        # 0x2976d1f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[   18.399723][    C3] RSP: 0018:ffffc90000af7698 EFLAGS: 00000206
[   18.399728][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000080
[   18.399730][    C3] RDX: 0000000000000000 RSI: ffffffffa128f4e4 RDI: 0000000000000001
[   18.399731][    C3] RBP: ffff8880010bd080 R08: 0000000000000001 R09: 0000000000000001
[   18.399733][    C3] R10: ffffffffa21e68d7 R11: ffff8880010bd098 R12: ffff8880010bd080
[   18.399735][    C3] R13: ffffea00002fbb80 R14: ffff888001942040 R15: ffff88800beeed88
[ 18.399741][ C3] get_partial_node.part.0 (mm/slub.c:2902) 
[ 18.399746][ C3] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 18.399750][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.399754][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.399757][ C3] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 18.399761][ C3] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.399764][ C3] kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 18.399768][ C3] __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 18.399772][ C3] __vmf_anon_prepare (mm/memory.c:3434) 
[ 18.399777][ C3] do_anonymous_page (mm/internal.h:410 mm/memory.c:4996) 
[ 18.399782][ C3] handle_pte_fault (mm/memory.c:5997) 
[ 18.399786][ C3] ? __pmd_alloc (mm/memory.c:6660) 
[ 18.399788][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.399792][ C3] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 18.399795][ 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) 
[ 18.399799][ C3] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 18.399803][ C3] __handle_mm_fault (mm/memory.c:6140) 
[ 18.399807][ C3] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 18.399810][ C3] ? mt_find (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 lib/maple_tree.c:6904) 
[ 18.399820][ C3] handle_mm_fault (mm/memory.c:6321) 
[ 18.399824][ C3] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 18.399830][ C3] faultin_page (mm/gup.c:1195 (discriminator 2)) 
[ 18.399834][ C3] __get_user_pages (mm/gup.c:1493) 
[ 18.399840][ C3] ? __pfx___get_user_pages (mm/gup.c:1425) 
[ 18.399847][ C3] get_user_pages_remote (mm/gup.c:1759 mm/gup.c:2661) 
[ 18.399851][ C3] ? down_read (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1255 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) 
[ 18.399855][ C3] ? __pfx_get_user_pages_remote (mm/gup.c:2654) 
[ 18.399858][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.399864][ C3] get_arg_page (fs/exec.c:157) 
[ 18.399869][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.399873][ C3] ? __pfx_get_arg_page (fs/exec.c:139) 
[ 18.399876][ C3] ? __might_fault (mm/memory.c:7151 mm/memory.c:7145) 
[ 18.399879][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.399884][ C3] copy_string_kernel (fs/exec.c:616) 
[ 18.399888][ C3] ? count.constprop.0.isra.0 (fs/exec.c:384) 
[ 18.399892][ C3] do_execveat_common.isra.0 (fs/exec.c:1879) 
[ 18.399898][ C3] __x64_sys_execve (fs/exec.c:2053) 
[ 18.399903][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.399907][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.399910][    C3] RIP: 0033:0x7f46a78fa40b
[ 18.399916][ C3] Code: c0 75 03 5f ff e7 c3 48 8b 0d f1 a9 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 80 00 00 00 00 f3 0f 1e fa b8 3b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c5 a9 1b 00 f7 d8 64 89 01 48
All code
========
   0:	c0 75 03 5f          	shlb   $0x5f,0x3(%rbp)
   4:	ff e7                	jmp    *%rdi
   6:	c3                   	ret
   7:	48 8b 0d f1 a9 1b 00 	mov    0x1ba9f1(%rip),%rcx        # 0x1ba9ff
   e:	f7 d8                	neg    %eax
  10:	64 89 01             	mov    %eax,%fs:(%rcx)
  13:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  17:	c3                   	ret
  18:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 3b 00 00 00       	mov    $0x3b,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d c5 a9 1b 00 	mov    0x1ba9c5(%rip),%rcx        # 0x1ba9ff
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d c5 a9 1b 00 	mov    0x1ba9c5(%rip),%rcx        # 0x1ba9d5
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   18.399919][    C3] RSP: 002b:00007ffe281bb008 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
[   18.399921][    C3] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46a78fa40b
[   18.399923][    C3] RDX: 000055f55971d5c0 RSI: 000055f559710d00 RDI: 000055f559724960
[   18.399925][    C3] RBP: 000055f559724960 R08: 000055f55971ce70 R09: 0000000000000020
[   18.399926][    C3] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff
[   18.399928][    C3] R13: 000055f559710d00 R14: 000055f55971d5c0 R15: 000055f55970c620
| [   21.395071][    C2] INFO: lockdep is turned off.
| [   21.395274][    C2] Preemption disabled at:
| [ 21.395276][ C2] 0x0 
| [   21.395656][    C2] Tainted: [W]=WARN
[   21.395658][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.395660][    C2] Call Trace:
[   21.395662][    C2]  <IRQ>
[ 21.395665][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 21.395678][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 21.395688][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 21.395695][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 21.395698][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 21.395704][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.395711][ 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) 
[ 21.395719][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 21.395722][ 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) 
[ 21.395726][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 21.395733][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 21.395736][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 21.395744][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 21.395748][ 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:2376) 
[ 21.395756][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 21.395760][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 21.395763][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 21.395770][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 21.395777][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 21.395783][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 21.395786][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 21.395789][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 21.395791][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.395795][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 21.395797][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 21.395800][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 21.395804][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 21.395809][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 21.395813][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.395818][ C2] __put_net (net/core/net_namespace.c:732) 
[ 21.395823][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 21.395827][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 21.395830][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 21.395834][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 21.395838][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 21.395844][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.395851][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 21.395856][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 21.395861][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 21.395864][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 21.395867][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   21.395871][    C2]  </IRQ>
[   21.395873][    C2]  <TASK>
[ 21.395874][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 21.395877][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 21.395881][ C2] Code: 92 b5 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 37 10 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:	92                   	xchg   %eax,%edx
   1:	b5 00                	mov    $0x0,%ch
   3:	c3                   	ret
   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 37 10 00 	verw   0x103783(%rip)        # 0x1037ab
  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
[   21.395884][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   21.395888][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffa07905d9
[   21.395890][    C2] RDX: ffffed1006c266fb RSI: ffffffffa0a53b60 RDI: ffffffff9df8d18f
[   21.395892][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c266fa
[   21.395893][    C2] R10: ffff8880361337d3 R11: ffff888001ee2818 R12: 0000000000000000
[   21.395895][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 21.395899][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 21.395902][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.395906][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 21.395908][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 21.395911][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 21.395914][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 21.395918][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 21.395922][ C2] do_idle (kernel/sched/idle.c:325) 
[ 21.395926][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 21.395929][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 21.395931][ 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