======================================
| [ 16.972169][ C2] #1: ffffffffa41794e0 (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) 
| [ 16.972600][ C2] #2: ffffffffa41793c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   16.973024][    C2]
| [   16.973024][    C2] stack backtrace:
[   16.973323][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.973325][    C2] Call Trace:
[   16.973327][    C2]  <IRQ>
[ 16.973329][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.973335][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 16.973340][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 16.973347][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 16.973351][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 16.973354][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 16.973358][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 16.973362][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4204) 
[ 16.973366][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 16.973369][ C2] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 16.973373][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.973378][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.973382][ C2] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 16.973385][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 16.973388][ C2] ? xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 16.973391][ C2] xa_set_mark (lib/xarray.c:2076 lib/xarray.c:2146) 
[ 16.973393][ C2] ? __pfx_xa_set_mark (lib/xarray.c:2144) 
[ 16.973396][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.973401][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.973405][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:54 lib/ref_tracker.c:223) 
[ 16.973410][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 16.973413][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.973417][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:213) 
[ 16.973421][ C2] ? ref_tracker_free (lib/ref_tracker.c:281) 
[ 16.973424][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.973427][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:281) 
[ 16.973430][ 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:2368) 
[ 16.973435][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 16.973438][ C2] ? rcu_core (kernel/rcu/tree.c:2834) 
[ 16.973440][ C2] ? handle_softirqs (kernel/softirq.c:580) 
[ 16.973444][ C2] __put_net (./include/linux/llist.h:238 ./include/linux/llist.h:265 net/core/net_namespace.c:732) 
[ 16.973449][ C2] ? ___slab_alloc (mm/slub.c:967 mm/slub.c:3849) 
[ 16.973451][ C2] ? __pfx___put_net (net/core/net_namespace.c:729) 
[ 16.973456][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.973460][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2368) 
[ 16.973464][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.973467][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 16.973470][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.973474][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.973477][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 16.973481][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 16.973484][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.973489][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.973492][ C2] handle_softirqs (kernel/softirq.c:580) 
[ 16.973498][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.973501][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.973505][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.973508][    C2]  </IRQ>
[   16.973509][    C2]  <TASK>
[ 16.973511][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.973515][ C2] RIP: 0010:unwind_next_frame (arch/x86/kernel/unwind_orc.c:403 arch/x86/kernel/unwind_orc.c:648) 
[ 16.973519][ C2] Code: 08 00 00 83 e0 07 38 c1 0f 9e c2 84 c9 0f 95 c0 84 c2 0f 85 82 08 00 00 4d 0f bf 66 02 4c 03 64 24 68 ba 08 00 00 00 4c 89 ef <4c> 89 e6 e8 9b e8 ff ff 4d 8d 5d 40 84 c0 0f 84 12 ef ff ff 4c 89
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 83 e0 07 38 c1    	add    %al,-0x3ec7f820(%rbx)
   8:	0f 9e c2             	setle  %dl
   b:	84 c9                	test   %cl,%cl
   d:	0f 95 c0             	setne  %al
  10:	84 c2                	test   %al,%dl
  12:	0f 85 82 08 00 00    	jne    0x89a
  18:	4d 0f bf 66 02       	movswq 0x2(%r14),%r12
  1d:	4c 03 64 24 68       	add    0x68(%rsp),%r12
  22:	ba 08 00 00 00       	mov    $0x8,%edx
  27:	4c 89 ef             	mov    %r13,%rdi
  2a:*	4c 89 e6             	mov    %r12,%rsi		<-- trapping instruction
  2d:	e8 9b e8 ff ff       	call   0xffffffffffffe8cd
  32:	4d 8d 5d 40          	lea    0x40(%r13),%r11
  36:	84 c0                	test   %al,%al
  38:	0f 84 12 ef ff ff    	je     0xffffffffffffef50
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	4c 89 e6             	mov    %r12,%rsi
   3:	e8 9b e8 ff ff       	call   0xffffffffffffe8a3
   8:	4d 8d 5d 40          	lea    0x40(%r13),%r11
   c:	84 c0                	test   %al,%al
   e:	0f 84 12 ef ff ff    	je     0xffffffffffffef26
  14:	4c                   	rex.WR
  15:	89                   	.byte 0x89
[   16.973522][    C2] RSP: 0018:ffffc900006d7370 EFLAGS: 00000283
[   16.973525][    C2] RAX: 0000000000000000 RBX: 1ffff920000dae77 RCX: 0000000000000000
[   16.973527][    C2] RDX: 0000000000000008 RSI: 0000000000000001 RDI: ffffc900006d7470
[   16.973529][    C2] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffc900006d74b1
[   16.973530][    C2] R10: 0000000000000000 R11: ffffc900006d74b0 R12: ffffc900006d7e98
[   16.973532][    C2] R13: ffffc900006d7470 R14: ffffffffa50bbf76 R15: ffffc900006d7ea8
[ 16.973538][ C2] ? bprm_execve (fs/exec.c:1749 fs/exec.c:1725) 
[ 16.973543][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 16.973548][ C2] ? bprm_execve (fs/exec.c:1749 fs/exec.c:1725) 
[ 16.973551][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 16.973555][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 16.973560][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 16.973565][ C2] ? do_execveat_common.isra.0 (fs/exec.c:1855) 
[ 16.973570][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 16.973573][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 16.973577][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 16.973581][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.973584][ C2] set_track_prepare (mm/slub.c:936) 
[ 16.973588][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4204) 
[ 16.973590][ C2] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 16.973595][ C2] ? __vmf_anon_prepare (mm/memory.c:3525) 
[ 16.973598][ C2] ? do_pte_missing (mm/internal.h:412 mm/memory.c:5630 mm/memory.c:5746 mm/memory.c:4251) 
[ 16.973600][ C2] ? handle_pte_fault (mm/memory.c:6089) 
[ 16.973603][ C2] ? __handle_mm_fault (mm/memory.c:6232) 
[ 16.973605][ C2] ? handle_mm_fault (mm/memory.c:6413) 
[ 16.973608][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1389) 
[ 16.973611][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 16.973614][ C2] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[ 16.973616][ C2] ? rep_stos_alternative (arch/x86/lib/clear_page_64.S:99) 
[ 16.973619][ C2] ? elf_load (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:197 ./arch/x86/include/asm/uaccess_64.h:205 fs/binfmt_elf.c:118 fs/binfmt_elf.c:420) 
[ 16.973623][ C2] ? load_elf_binary (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:126 fs/binfmt_elf.c:1175) 
[ 16.973626][ C2] ? exec_binprm (fs/exec.c:1667 fs/exec.c:1697) 
[ 16.973629][ C2] ? bprm_execve (fs/exec.c:1749 fs/exec.c:1725) 
[ 16.973632][ C2] ___slab_alloc (mm/slub.c:967 mm/slub.c:3849) 
[ 16.973635][ C2] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 16.973640][ C2] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 16.973643][ C2] __slab_alloc.constprop.0 (mm/slub.c:3949) 
[ 16.973647][ C2] ? __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 16.973649][ C2] kmem_cache_alloc_noprof (mm/slub.c:4024 mm/slub.c:4185 mm/slub.c:4204) 
[ 16.973654][ C2] __anon_vma_prepare (mm/rmap.c:142 mm/rmap.c:195) 
[ 16.973658][ C2] __vmf_anon_prepare (mm/memory.c:3525) 
[ 16.973662][ C2] do_pte_missing (mm/internal.h:412 mm/memory.c:5630 mm/memory.c:5746 mm/memory.c:4251) 
[ 16.973665][ C2] handle_pte_fault (mm/memory.c:6089) 
[ 16.973668][ C2] ? __pmd_alloc (mm/memory.c:6500) 
[ 16.973671][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.973675][ C2] ? __pfx_handle_pte_fault (mm/memory.c:6046) 
[ 16.973678][ 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) 
[ 16.973681][ C2] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 16.973686][ C2] __handle_mm_fault (mm/memory.c:6232) 
[ 16.973689][ C2] ? __pfx___handle_mm_fault (mm/memory.c:6141) 
[ 16.973691][ C2] ? mt_find (lib/maple_tree.c:6936) 
[ 16.973700][ C2] handle_mm_fault (mm/memory.c:6413) 
[ 16.973703][ C2] ? __pfx_handle_mm_fault (mm/memory.c:6368) 
[ 16.973707][ C2] ? down_read_trylock (kernel/locking/rwsem.c:1566 kernel/locking/rwsem.c:1561) 
[ 16.973713][ C2] do_user_addr_fault (arch/x86/mm/fault.c:1389) 
[ 16.973718][ C2] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 16.973722][ C2] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[ 16.973725][ C2] RIP: 0010:rep_stos_alternative (arch/x86/lib/clear_page_64.S:99) 
[ 16.973727][ C2] Code: c9 75 f6 e9 02 65 03 00 48 89 07 48 83 c7 08 83 e9 08 74 ef 83 f9 08 73 ef eb de 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <48> 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47
All code
========
   0:	c9                   	leave
   1:	75 f6                	jne    0xfffffffffffffff9
   3:	e9 02 65 03 00       	jmp    0x3650a
   8:	48 89 07             	mov    %rax,(%rdi)
   b:	48 83 c7 08          	add    $0x8,%rdi
   f:	83 e9 08             	sub    $0x8,%ecx
  12:	74 ef                	je     0x3
  14:	83 f9 08             	cmp    $0x8,%ecx
  17:	73 ef                	jae    0x8
  19:	eb de                	jmp    0xfffffffffffffff9
  1b:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  22:	00 00 00 00 
  26:	0f 1f 40 00          	nopl   0x0(%rax)
  2a:*	48 89 07             	mov    %rax,(%rdi)		<-- trapping instruction
  2d:	48 89 47 08          	mov    %rax,0x8(%rdi)
  31:	48 89 47 10          	mov    %rax,0x10(%rdi)
  35:	48 89 47 18          	mov    %rax,0x18(%rdi)
  39:	48 89 47 20          	mov    %rax,0x20(%rdi)
  3d:	48                   	rex.W
  3e:	89                   	.byte 0x89
  3f:	47                   	rex.RXB

Code starting with the faulting instruction
===========================================
   0:	48 89 07             	mov    %rax,(%rdi)
   3:	48 89 47 08          	mov    %rax,0x8(%rdi)
   7:	48 89 47 10          	mov    %rax,0x10(%rdi)
   b:	48 89 47 18          	mov    %rax,0x18(%rdi)
   f:	48 89 47 20          	mov    %rax,0x20(%rdi)
  13:	48                   	rex.W
  14:	89                   	.byte 0x89
  15:	47                   	rex.RXB
[   16.973729][    C2] RSP: 0018:ffffc900006d7bd8 EFLAGS: 00050202
[   16.973731][    C2] RAX: 0000000000000000 RBX: ffff888002bc9d18 RCX: 0000000000000f08
[   16.973733][    C2] RDX: 0000000000000000 RSI: ffffffffa3c8de21 RDI: 000055e6a55d70f8
[   16.973735][    C2] RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000001
[   16.973736][    C2] R10: 0000000000000000 R11: ffff88800a3bc120 R12: 000055e6a55d70f8
[   16.973737][    C2] R13: 0000000000000f08 R14: 000055e6a55d7150 R15: ffff888002bc9d38
[ 16.973743][ C2] elf_load (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:197 ./arch/x86/include/asm/uaccess_64.h:205 fs/binfmt_elf.c:118 fs/binfmt_elf.c:420) 
[ 16.973748][ C2] load_elf_binary (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:126 fs/binfmt_elf.c:1175) 
[ 16.973755][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.973758][ C2] ? __pfx_load_elf_binary (fs/binfmt_elf.c:818) 
[ 16.973761][ C2] ? exec_binprm (fs/exec.c:1665 fs/exec.c:1697) 
[ 16.973767][ C2] exec_binprm (fs/exec.c:1667 fs/exec.c:1697) 
[ 16.973772][ C2] ? __pfx_exec_binprm (fs/exec.c:1681) 
[ 16.973775][ C2] ? bprm_execve (fs/exec.c:1739 fs/exec.c:1725) 
[ 16.973780][ C2] bprm_execve (fs/exec.c:1749 fs/exec.c:1725) 
[ 16.973784][ C2] do_execveat_common.isra.0 (fs/exec.c:1855) 
[ 16.973789][ C2] __x64_sys_execve (fs/exec.c:2000) 
[ 16.973793][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.973796][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.973798][    C2] RIP: 0033:0x7f7e98abb40b
[ 16.973805][ C2] Code: Unable to access opcode bytes at 0x7f7e98abb3e1.

Code starting with the faulting instruction
===========================================
[   16.973807][    C2] RSP: 002b:00007fffe4d79bd8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
[   16.973809][    C2] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e98abb40b
[   16.973811][    C2] RDX: 00005585dadeb6c0 RSI: 00005585dade9570 RDI: 00005585dae0d700
[   16.973812][    C2] RBP: 00005585dae0d700 R08: 00005585dadeaf70 R09: 0000000000000020
[   16.973814][    C2] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock