======================================
| [ 12.578109][ C2] #1: ffffffffbad775e0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
| [ 12.578476][ C2] #2: ffffffffbad774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   12.578838][    C2]
| [   12.578838][    C2] stack backtrace:
[   12.579094][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.579097][    C2] Call Trace:
[   12.579099][    C2]  <IRQ>
[ 12.579101][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.579106][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 12.579111][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 12.579116][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 12.579119][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 12.579123][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 12.579127][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 12.579130][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 12.579134][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 12.579138][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 12.579141][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.579145][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.579150][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 12.579153][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.579157][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 12.579160][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 12.579162][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 12.579165][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 12.579169][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 12.579173][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 12.579176][ 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) 
[ 12.579181][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.579184][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 12.579186][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.579189][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 12.579194][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.579197][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5875) 
[ 12.579200][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.579203][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 12.579207][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 12.579210][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 12.579215][ C2] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 12.579218][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 12.579222][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 12.579229][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.579233][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 12.579237][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.579240][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.579243][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.579247][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 12.579250][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.579253][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 12.579256][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.579261][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 12.579266][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.579271][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.579275][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.579278][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   12.579281][    C2]  </IRQ>
[   12.579282][    C2]  <TASK>
[ 12.579284][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.579286][ C2] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5875) 
[ 12.579290][ C2] Code: ff ff ff 65 0f c1 05 fd fb 14 05 83 f8 01 0f 85 3e 01 00 00 9c 58 f6 c4 02 0f 85 29 01 00 00 48 85 db 74 01 fb 48 8b 44 24 30 <65> 48 2b 05 6e bb 14 05 0f 85 3a 01 00 00 48 83 c4 38 5b 5d 41 5c
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff 65 0f             	jmp    *0xf(%rbp)
   5:	c1 05 fd fb 14 05 83 	roll   $0x83,0x514fbfd(%rip)        # 0x514fc09
   c:	f8                   	clc
   d:	01 0f                	add    %ecx,(%rdi)
   f:	85 3e                	test   %edi,(%rsi)
  11:	01 00                	add    %eax,(%rax)
  13:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1a:	85 29                	test   %ebp,(%rcx)
  1c:	01 00                	add    %eax,(%rax)
  1e:	00 48 85             	add    %cl,-0x7b(%rax)
  21:	db 74 01 fb          	(bad)  -0x5(%rcx,%rax,1)
  25:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
  2a:*	65 48 2b 05 6e bb 14 	sub    %gs:0x514bb6e(%rip),%rax        # 0x514bba0		<-- trapping instruction
  31:	05 
  32:	0f 85 3a 01 00 00    	jne    0x172
  38:	48 83 c4 38          	add    $0x38,%rsp
  3c:	5b                   	pop    %rbx
  3d:	5d                   	pop    %rbp
  3e:	41 5c                	pop    %r12

Code starting with the faulting instruction
===========================================
   0:	65 48 2b 05 6e bb 14 	sub    %gs:0x514bb6e(%rip),%rax        # 0x514bb76
   7:	05 
   8:	0f 85 3a 01 00 00    	jne    0x148
   e:	48 83 c4 38          	add    $0x38,%rsp
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
[   12.579293][    C2] RSP: 0018:ffffc900004c73f0 EFLAGS: 00000206
[   12.579296][    C2] RAX: db8d2985a0329200 RBX: 0000000000000200 RCX: 0000000000000001
[   12.579298][    C2] RDX: 0000000000000000 RSI: ffffffffba87ab82 RDI: ffffffffba053ca0
[   12.579300][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[   12.579301][    C2] R10: 0000000000000000 R11: ffffffffbad775e0 R12: 0000000000000002
[   12.579303][    C2] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffbad775e0
[ 12.579309][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.579312][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 12.579315][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.579319][ C2] unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.579322][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.579325][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.579329][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 12.579333][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.579336][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 12.579340][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 12.579344][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 12.579348][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.579352][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 12.579355][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 12.579358][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 12.579361][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 12.579364][ C2] kasan_save_stack (mm/kasan/common.c:48) 
[ 12.579367][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 12.579370][ C2] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 12.579373][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 12.579376][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 12.579379][ C2] ? vm_area_alloc (kernel/fork.c:441) 
[ 12.579383][ C2] ? __mmap_region (mm/vma.c:2403 mm/vma.c:2520) 
[ 12.579387][ C2] ? do_mmap (mm/mmap.c:561) 
[ 12.579390][ C2] ? vm_mmap_pgoff (mm/util.c:579) 
[ 12.579393][ C2] ? ksys_mmap_pgoff (mm/mmap.c:607) 
[ 12.579395][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.579398][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.579401][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 12.579406][ C2] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 12.579411][ C2] ? set_track_prepare (mm/slub.c:939) 
[ 12.579413][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 12.579416][ C2] ? vm_area_alloc (kernel/fork.c:441) 
[ 12.579419][ C2] ? __mmap_region (mm/vma.c:2403 mm/vma.c:2520) 
[ 12.579422][ C2] ? do_mmap (mm/mmap.c:561) 
[ 12.579424][ C2] ? vm_mmap_pgoff (mm/util.c:579) 
[ 12.579426][ C2] ? ksys_mmap_pgoff (mm/mmap.c:607) 
[ 12.579428][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.579430][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.579434][ C2] ? set_track_update.isra.0 (mm/slub.c:957) 
[ 12.579437][ C2] ? ___slab_alloc (mm/slub.c:968 mm/slub.c:3848) 
[ 12.579441][ C2] ? vm_area_alloc (kernel/fork.c:441) 
[ 12.579446][ C2] kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 12.579449][ C2] __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 12.579453][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 12.579457][ C2] ? vma_merge_new_range (mm/vma.c:1019) 
[ 12.579462][ C2] vm_area_alloc (kernel/fork.c:441) 
[ 12.579465][ C2] __mmap_region (mm/vma.c:2403 mm/vma.c:2520) 
[ 12.579470][ C2] ? __pfx___mmap_region (mm/vma.c:2500) 
[ 12.579475][ C2] ? mas_find (lib/maple_tree.c:6016) 
[ 12.579492][ C2] ? mmap_region (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/mman.h:204 mm/vma.c:2582) 
[ 12.579497][ C2] do_mmap (mm/mmap.c:561) 
[ 12.579501][ C2] ? __pfx_do_mmap (mm/mmap.c:342) 
[ 12.579504][ C2] ? down_write_killable (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1590) 
[ 12.579507][ C2] ? __pfx_down_write_killable (kernel/locking/rwsem.c:1586) 
[ 12.579511][ C2] vm_mmap_pgoff (mm/util.c:579) 
[ 12.579516][ C2] ? __pfx_vm_mmap_pgoff (mm/util.c:567) 
[ 12.579520][ C2] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/file.c:1057) 
[ 12.579524][ C2] ? __fget_files (fs/file.c:1060) 
[ 12.579529][ C2] ksys_mmap_pgoff (mm/mmap.c:607) 
[ 12.579532][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.579536][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.579539][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.579541][    C2] RIP: 0033:0x7fbcc7ef1116
[ 12.579545][ C2] Code: 5d 41 5c c3 f3 0f 1e fa 41 f7 c1 ff 0f 00 00 75 2b 55 48 89 fd 53 89 cb 48 85 ff 74 37 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 62 5b 5d c3 0f 1f 80 00 00 00 00 c7 05 ae f0
All code
========
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	c3                   	ret
   4:	f3 0f 1e fa          	endbr64
   8:	41 f7 c1 ff 0f 00 00 	test   $0xfff,%r9d
   f:	75 2b                	jne    0x3c
  11:	55                   	push   %rbp
  12:	48 89 fd             	mov    %rdi,%rbp
  15:	53                   	push   %rbx
  16:	89 cb                	mov    %ecx,%ebx
  18:	48 85 ff             	test   %rdi,%rdi
  1b:	74 37                	je     0x54
  1d:	41 89 da             	mov    %ebx,%r10d
  20:	48 89 ef             	mov    %rbp,%rdi
  23:	b8 09 00 00 00       	mov    $0x9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 62                	ja     0x94
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3c:	c7                   	.byte 0xc7
  3d:	05                   	.byte 0x5
  3e:	ae                   	scas   %es:(%rdi),%al
  3f:	f0                   	lock

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 62                	ja     0x6a
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	c3                   	ret
   b:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  12:	c7                   	.byte 0xc7
  13:	05                   	.byte 0x5
  14:	ae                   	scas   %es:(%rdi),%al
  15:	f0                   	lock
[   12.579547][    C2] RSP: 002b:00007ffd70268e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   12.579550][    C2] RAX: ffffffffffffffda RBX: 0000000000000802 RCX: 00007fbcc7ef1116
[   12.579551][    C2] RDX: 0000000000000001 RSI: 000000000002d388 RDI: 0000000000000000
[   12.579553][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   12.579554][    C2] R10: 0000000000000802 R11: 0000000000000246 R12: 0000000000000fff
[   12.579556][    C2] R13: 00007ffd70269260 R14: 0000000000000000 R15: 00007fbcc7ebf610
| [   12.610263][    C2] RCU nest depth: 1, expected: 0
| [   12.610467][    C2] INFO: lockdep is turned off.
| [   12.610668][    C2] Preemption disabled at:
| [ 12.610670][ C2] handle_softirqs (kernel/softirq.c:553) 
[   12.611083][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.611085][    C2] Call Trace:
[   12.611087][    C2]  <IRQ>
[ 12.611088][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 12.611095][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 12.611102][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 12.611106][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 12.611109][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 12.611114][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.611120][ 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) 
[ 12.611123][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 12.611127][ 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) 
[ 12.611129][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 12.611135][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 12.611138][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 12.611142][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 12.611145][ 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) 
[ 12.611150][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.611155][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 12.611157][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 12.611160][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 12.611164][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.611168][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5875) 
[ 12.611173][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.611178][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 12.611181][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 12.611190][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 12.611195][ C2] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 12.611198][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 12.611201][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 12.611209][ C2] __put_net (net/core/net_namespace.c:732) 
[ 12.611212][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 12.611217][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.611219][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 12.611223][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 12.611227][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 12.611230][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 12.611233][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 12.611236][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 12.611241][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 12.611246][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 12.611251][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 12.611255][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 12.611258][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   12.611261][    C2]  </IRQ>
[   12.611262][    C2]  <TASK>
[ 12.611264][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 12.611266][ C2] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5875) 
[ 12.611270][ C2] Code: ff ff ff 65 0f c1 05 fd fb 14 05 83 f8 01 0f 85 3e 01 00 00 9c 58 f6 c4 02 0f 85 29 01 00 00 48 85 db 74 01 fb 48 8b 44 24 30 <65> 48 2b 05 6e bb 14 05 0f 85 3a 01 00 00 48 83 c4 38 5b 5d 41 5c
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff 65 0f             	jmp    *0xf(%rbp)
   5:	c1 05 fd fb 14 05 83 	roll   $0x83,0x514fbfd(%rip)        # 0x514fc09
   c:	f8                   	clc
   d:	01 0f                	add    %ecx,(%rdi)
   f:	85 3e                	test   %edi,(%rsi)
  11:	01 00                	add    %eax,(%rax)
  13:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1a:	85 29                	test   %ebp,(%rcx)
  1c:	01 00                	add    %eax,(%rax)
  1e:	00 48 85             	add    %cl,-0x7b(%rax)
  21:	db 74 01 fb          	(bad)  -0x5(%rcx,%rax,1)
  25:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
  2a:*	65 48 2b 05 6e bb 14 	sub    %gs:0x514bb6e(%rip),%rax        # 0x514bba0		<-- trapping instruction
  31:	05 
  32:	0f 85 3a 01 00 00    	jne    0x172
  38:	48 83 c4 38          	add    $0x38,%rsp
  3c:	5b                   	pop    %rbx
  3d:	5d                   	pop    %rbp
  3e:	41 5c                	pop    %r12

Code starting with the faulting instruction
===========================================
   0:	65 48 2b 05 6e bb 14 	sub    %gs:0x514bb6e(%rip),%rax        # 0x514bb76
   7:	05 
   8:	0f 85 3a 01 00 00    	jne    0x148
   e:	48 83 c4 38          	add    $0x38,%rsp
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
[   12.611273][    C2] RSP: 0018:ffffc900004c73f0 EFLAGS: 00000206
[   12.611276][    C2] RAX: db8d2985a0329200 RBX: 0000000000000200 RCX: 0000000000000001
[   12.611277][    C2] RDX: 0000000000000000 RSI: ffffffffba87ab82 RDI: ffffffffba053ca0
[   12.611279][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[   12.611281][    C2] R10: 0000000000000000 R11: ffffffffbad775e0 R12: 0000000000000002
[   12.611282][    C2] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffbad775e0
[ 12.611288][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.611291][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 12.611294][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.611298][ C2] unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.611301][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 12.611304][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.611308][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 12.611312][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.611315][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 12.611318][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 12.611322][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 12.611326][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.611330][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 12.611333][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 12.611336][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 12.611339][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 12.611342][ C2] kasan_save_stack (mm/kasan/common.c:48) 
[ 12.611346][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 12.611349][ C2] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 12.611352][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 12.611355][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 12.611358][ C2] ? vm_area_alloc (kernel/fork.c:441) 
[ 12.611362][ C2] ? __mmap_region (mm/vma.c:2403 mm/vma.c:2520) 
[ 12.611365][ C2] ? do_mmap (mm/mmap.c:561) 
[ 12.611368][ C2] ? vm_mmap_pgoff (mm/util.c:579) 
[ 12.611372][ C2] ? ksys_mmap_pgoff (mm/mmap.c:607) 
[ 12.611374][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.611377][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.611380][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 12.611384][ C2] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 12.611389][ C2] ? set_track_prepare (mm/slub.c:939) 
[ 12.611391][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 12.611394][ C2] ? vm_area_alloc (kernel/fork.c:441) 
[ 12.611397][ C2] ? __mmap_region (mm/vma.c:2403 mm/vma.c:2520) 
[ 12.611400][ C2] ? do_mmap (mm/mmap.c:561) 
[ 12.611402][ C2] ? vm_mmap_pgoff (mm/util.c:579) 
[ 12.611404][ C2] ? ksys_mmap_pgoff (mm/mmap.c:607) 
[ 12.611406][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.611408][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 12.611412][ C2] ? set_track_update.isra.0 (mm/slub.c:957) 
[ 12.611415][ C2] ? ___slab_alloc (mm/slub.c:968 mm/slub.c:3848) 
[ 12.611419][ C2] ? vm_area_alloc (kernel/fork.c:441) 
[ 12.611424][ C2] kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 12.611427][ C2] __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 12.611431][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 12.611435][ C2] ? vma_merge_new_range (mm/vma.c:1019) 
[ 12.611440][ C2] vm_area_alloc (kernel/fork.c:441) 
[ 12.611443][ C2] __mmap_region (mm/vma.c:2403 mm/vma.c:2520) 
[ 12.611448][ C2] ? __pfx___mmap_region (mm/vma.c:2500) 
[ 12.611453][ C2] ? mas_find (lib/maple_tree.c:6016) 
[ 12.611470][ C2] ? mmap_region (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/mman.h:204 mm/vma.c:2582) 
[ 12.611475][ C2] do_mmap (mm/mmap.c:561) 
[ 12.611480][ C2] ? __pfx_do_mmap (mm/mmap.c:342) 
[ 12.611482][ C2] ? down_write_killable (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1590) 
[ 12.611485][ C2] ? __pfx_down_write_killable (kernel/locking/rwsem.c:1586) 
[ 12.611489][ C2] vm_mmap_pgoff (mm/util.c:579) 
[ 12.611494][ C2] ? __pfx_vm_mmap_pgoff (mm/util.c:567) 
[ 12.611498][ C2] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/file.c:1057) 
[ 12.611502][ C2] ? __fget_files (fs/file.c:1060) 
[ 12.611506][ C2] ksys_mmap_pgoff (mm/mmap.c:607) 
[ 12.611509][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 12.611513][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 12.611517][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.611519][    C2] RIP: 0033:0x7fbcc7ef1116
[ 12.611522][ C2] Code: 5d 41 5c c3 f3 0f 1e fa 41 f7 c1 ff 0f 00 00 75 2b 55 48 89 fd 53 89 cb 48 85 ff 74 37 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 62 5b 5d c3 0f 1f 80 00 00 00 00 c7 05 ae f0
All code
========
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	c3                   	ret
   4:	f3 0f 1e fa          	endbr64
   8:	41 f7 c1 ff 0f 00 00 	test   $0xfff,%r9d
   f:	75 2b                	jne    0x3c
  11:	55                   	push   %rbp
  12:	48 89 fd             	mov    %rdi,%rbp
  15:	53                   	push   %rbx
  16:	89 cb                	mov    %ecx,%ebx
  18:	48 85 ff             	test   %rdi,%rdi
  1b:	74 37                	je     0x54
  1d:	41 89 da             	mov    %ebx,%r10d
  20:	48 89 ef             	mov    %rbp,%rdi
  23:	b8 09 00 00 00       	mov    $0x9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 62                	ja     0x94
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3c:	c7                   	.byte 0xc7
  3d:	05                   	.byte 0x5
  3e:	ae                   	scas   %es:(%rdi),%al
  3f:	f0                   	lock

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 62                	ja     0x6a
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	c3                   	ret
   b:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  12:	c7                   	.byte 0xc7
  13:	05                   	.byte 0x5
  14:	ae                   	scas   %es:(%rdi),%al
  15:	f0                   	lock
[   12.611524][    C2] RSP: 002b:00007ffd70268e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   12.611527][    C2] RAX: ffffffffffffffda RBX: 0000000000000802 RCX: 00007fbcc7ef1116
[   12.611529][    C2] RDX: 0000000000000001 RSI: 000000000002d388 RDI: 0000000000000000
[   12.611530][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   12.611532][    C2] R10: 0000000000000802 R11: 0000000000000246 R12: 0000000000000fff


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