======================================
| [ 15.607984][ C3] #3: ffffffffa7d74ae0 (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) 
| [ 15.608407][ C3] #4: ffffffffa7d749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.608822][    C3]
| [   15.608822][    C3] stack backtrace:
[   15.609120][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.609122][    C3] Call Trace:
[   15.609124][    C3]  <IRQ>
[ 15.609126][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.609132][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.609138][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.609143][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.609147][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.609151][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.609155][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.609159][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.609164][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.609167][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.609170][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.609175][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.609177][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.609181][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.609184][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.609186][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 15.609189][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.609192][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.609197][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.609200][ 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:2366) 
[ 15.609206][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.609209][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.609212][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.609215][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.609219][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.609222][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5870) 
[ 15.609224][ C3] ? unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 15.609227][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 15.609231][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 15.609235][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 15.609240][ C3] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.609244][ C3] ? kmem_cache_free (mm/slub.c:2343 mm/slub.c:4642 mm/slub.c:4744) 
[ 15.609248][ C3] ? __put_anon_vma (mm/rmap.c:2757) 
[ 15.609255][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.609259][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.609263][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.609266][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.609270][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.609274][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.609277][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 15.609281][ C3] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 15.609285][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.609290][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.609294][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.609298][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.609301][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.609303][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.609307][    C3]  </IRQ>
[   15.609308][    C3]  <TASK>
[ 15.609309][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.609312][ C3] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5870) 
[ 15.609315][ C3] Code: ff ff ff 65 0f c1 05 ed 2d 13 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 5e f1 12 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 ed 2d 13 05 83 	roll   $0x83,0x5132ded(%rip)        # 0x5132df9
   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 5e f1 12 	sub    %gs:0x512f15e(%rip),%rax        # 0x512f190		<-- 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 5e f1 12 	sub    %gs:0x512f15e(%rip),%rax        # 0x512f166
   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
[   15.609318][    C3] RSP: 0018:ffffc90000b57270 EFLAGS: 00000206
[   15.609321][    C3] RAX: 02eaa252c6858000 RBX: 0000000000000200 RCX: 0000000000000001
[   15.609324][    C3] RDX: 0000000000000000 RSI: ffffffffa7870c0b RDI: ffffffffa7051260
[   15.609326][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[   15.609327][    C3] R10: 0000000000000078 R11: ffffffffa7d74ae0 R12: 0000000000000002
[   15.609329][    C3] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffa7d74ae0
[ 15.609335][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.609338][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.609341][ C3] ? 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) 
[ 15.609345][ C3] unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 15.609349][ C3] ? 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) 
[ 15.609352][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.609356][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.609361][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.609363][ C3] ? kernel_text_address (kernel/extable.c:99) 
[ 15.609368][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 15.609372][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 15.609377][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.609381][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 15.609384][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 15.609389][ C3] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 15.609392][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 15.609395][ C3] kasan_save_stack (mm/kasan/common.c:48) 
[ 15.609398][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 15.609401][ C3] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.609404][ C3] ? kmem_cache_free (mm/slub.c:2343 mm/slub.c:4642 mm/slub.c:4744) 
[ 15.609407][ C3] ? __put_anon_vma (mm/rmap.c:2757) 
[ 15.609410][ C3] ? unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 15.609413][ C3] ? free_pgtables (mm/memory.c:392) 
[ 15.609417][ C3] ? exit_mmap (mm/mmap.c:1297) 
[ 15.609419][ C3] ? mmput (kernel/fork.c:1447 kernel/fork.c:1382 kernel/fork.c:1402) 
[ 15.609423][ C3] ? exec_mmap (fs/exec.c:1014) 
[ 15.609426][ C3] ? begin_new_exec (fs/exec.c:1264) 
[ 15.609429][ C3] ? load_elf_binary (fs/binfmt_elf.c:1003) 
[ 15.609434][ C3] ? exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 15.609436][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.609438][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 15.609440][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 15.609445][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 15.609451][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.609454][ C3] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 15.609457][ C3] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 15.609461][ C3] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 15.609464][ C3] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:104 ./include/linux/rcupdate.h:955 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 15.609467][ C3] kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.609470][ C3] kmem_cache_free (mm/slub.c:2343 mm/slub.c:4642 mm/slub.c:4744) 
[ 15.609474][ C3] ? __put_anon_vma (mm/rmap.c:2757) 
[ 15.609478][ C3] __put_anon_vma (mm/rmap.c:2757) 
[ 15.609481][ C3] unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 15.609486][ C3] free_pgtables (mm/memory.c:392) 
[ 15.609492][ C3] ? __pfx_free_pgtables (mm/memory.c:349) 
[ 15.609495][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.609497][ C3] ? exit_mmap (./include/linux/seqlock.h:431 ./include/linux/mmap_lock.h:82 ./include/linux/mmap_lock.h:129 mm/mmap.c:1292) 
[ 15.609500][ C3] ? down_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1313 kernel/locking/rwsem.c:1578) 
[ 15.609503][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.609508][ C3] exit_mmap (mm/mmap.c:1297) 
[ 15.609512][ C3] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 15.609517][ C3] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:924) 
[ 15.609524][ C3] mmput (kernel/fork.c:1447 kernel/fork.c:1382 kernel/fork.c:1402) 
[ 15.609529][ C3] exec_mmap (fs/exec.c:1014) 
[ 15.609533][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.609537][ C3] begin_new_exec (fs/exec.c:1264) 
[ 15.609541][ C3] load_elf_binary (fs/binfmt_elf.c:1003) 
[ 15.609547][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 15.609552][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.609555][ C3] ? __pfx_load_elf_binary (fs/binfmt_elf.c:825) 
[ 15.609559][ C3] ? exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 15.609563][ C3] exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 15.609567][ C3] ? __pfx_exec_binprm (fs/exec.c:1794) 
[ 15.609570][ C3] ? bprm_execve (fs/exec.c:1852 fs/exec.c:1838) 
[ 15.609574][ C3] bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.609577][ C3] do_execveat_common.isra.0 (fs/exec.c:1968) 
[ 15.609582][ C3] __x64_sys_execve (fs/exec.c:2113) 
[ 15.609585][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.609588][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.609591][    C3] RIP: 0033:0x7fed3b18a40b
[ 15.609597][ C3] Code: Unable to access opcode bytes at 0x7fed3b18a3e1.

Code starting with the faulting instruction
===========================================
[   15.609599][    C3] RSP: 002b:00007ffd6faf2148 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
[   15.609602][    C3] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fed3b18a40b
[   15.609604][    C3] RDX: 00005628a4a18640 RSI: 00005628a4a0bd90 RDI: 00005628a4a25a00
[   15.609605][    C3] RBP: 00005628a4a25a00 R08: 00005628a4a1fa40 R09: 0000000000000020
[   15.609607][    C3] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff
[   15.609609][    C3] R13: 00005628a4a0bd90 R14: 00005628a4a18640 R15: 00005628a4a07660
| [   15.646115][    C3] RCU nest depth: 1, expected: 0
| [   15.646475][    C3] INFO: lockdep is turned off.
| [   15.646707][    C3] Preemption disabled at:
| [ 15.646708][ C3] handle_softirqs (kernel/softirq.c:553) 
[   15.647155][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.647156][    C3] Call Trace:
[   15.647158][    C3]  <IRQ>
[ 15.647159][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.647166][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 15.647171][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.647176][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.647179][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.647184][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.647189][ 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) 
[ 15.647194][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.647197][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.647201][ 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) 
[ 15.647205][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.647208][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.647213][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.647216][ 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:2366) 
[ 15.647221][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.647225][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.647228][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.647231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.647235][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.647238][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5870) 
[ 15.647241][ C3] ? unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 15.647246][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 15.647249][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 15.647254][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 15.647258][ C3] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.647262][ C3] ? kmem_cache_free (mm/slub.c:2343 mm/slub.c:4642 mm/slub.c:4744) 
[ 15.647266][ C3] ? __put_anon_vma (mm/rmap.c:2757) 
[ 15.647272][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.647276][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.647279][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.647283][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.647286][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.647291][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.647295][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 15.647298][ C3] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 15.647302][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.647307][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.647310][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.647315][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.647317][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.647320][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.647323][    C3]  </IRQ>
[   15.647324][    C3]  <TASK>
[ 15.647326][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.647329][ C3] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5870) 
[ 15.647332][ C3] Code: ff ff ff 65 0f c1 05 ed 2d 13 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 5e f1 12 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 ed 2d 13 05 83 	roll   $0x83,0x5132ded(%rip)        # 0x5132df9
   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 5e f1 12 	sub    %gs:0x512f15e(%rip),%rax        # 0x512f190		<-- 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 5e f1 12 	sub    %gs:0x512f15e(%rip),%rax        # 0x512f166
   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
[   15.647334][    C3] RSP: 0018:ffffc90000b57270 EFLAGS: 00000206
[   15.647338][    C3] RAX: 02eaa252c6858000 RBX: 0000000000000200 RCX: 0000000000000001
[   15.647339][    C3] RDX: 0000000000000000 RSI: ffffffffa7870c0b RDI: ffffffffa7051260
[   15.647341][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
[   15.647343][    C3] R10: 0000000000000078 R11: ffffffffa7d74ae0 R12: 0000000000000002
[   15.647344][    C3] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffa7d74ae0
[ 15.647350][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.647354][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.647356][ C3] ? 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) 
[ 15.647360][ C3] unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 15.647364][ C3] ? 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) 
[ 15.647367][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.647372][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.647377][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.647379][ C3] ? kernel_text_address (kernel/extable.c:99) 
[ 15.647383][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 15.647387][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 15.647392][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.647395][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 15.647399][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 15.647403][ C3] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 15.647406][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 15.647410][ C3] kasan_save_stack (mm/kasan/common.c:48) 
[ 15.647413][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 15.647416][ C3] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.647418][ C3] ? kmem_cache_free (mm/slub.c:2343 mm/slub.c:4642 mm/slub.c:4744) 
[ 15.647422][ C3] ? __put_anon_vma (mm/rmap.c:2757) 
[ 15.647424][ C3] ? unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 15.647427][ C3] ? free_pgtables (mm/memory.c:392) 
[ 15.647431][ C3] ? exit_mmap (mm/mmap.c:1297) 
[ 15.647434][ C3] ? mmput (kernel/fork.c:1447 kernel/fork.c:1382 kernel/fork.c:1402) 
[ 15.647439][ C3] ? exec_mmap (fs/exec.c:1014) 
[ 15.647442][ C3] ? begin_new_exec (fs/exec.c:1264) 
[ 15.647444][ C3] ? load_elf_binary (fs/binfmt_elf.c:1003) 
[ 15.647448][ C3] ? exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 15.647450][ C3] ? bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.647452][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 15.647455][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 15.647460][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 15.647466][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.647469][ C3] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 15.647472][ C3] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 15.647475][ C3] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 15.647478][ C3] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:104 ./include/linux/rcupdate.h:955 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 15.647482][ C3] kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.647485][ C3] kmem_cache_free (mm/slub.c:2343 mm/slub.c:4642 mm/slub.c:4744) 
[ 15.647489][ C3] ? __put_anon_vma (mm/rmap.c:2757) 
[ 15.647493][ C3] __put_anon_vma (mm/rmap.c:2757) 
[ 15.647499][ C3] unlink_anon_vmas (./include/linux/rmap.h:117 mm/rmap.c:444) 
[ 15.647504][ C3] free_pgtables (mm/memory.c:392) 
[ 15.647509][ C3] ? __pfx_free_pgtables (mm/memory.c:349) 
[ 15.647512][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.647514][ C3] ? exit_mmap (./include/linux/seqlock.h:431 ./include/linux/mmap_lock.h:82 ./include/linux/mmap_lock.h:129 mm/mmap.c:1292) 
[ 15.647518][ C3] ? down_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1313 kernel/locking/rwsem.c:1578) 
[ 15.647520][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.647525][ C3] exit_mmap (mm/mmap.c:1297) 
[ 15.647528][ C3] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 15.647534][ C3] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:924) 
[ 15.647541][ C3] mmput (kernel/fork.c:1447 kernel/fork.c:1382 kernel/fork.c:1402) 
[ 15.647546][ C3] exec_mmap (fs/exec.c:1014) 
[ 15.647550][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.647554][ C3] begin_new_exec (fs/exec.c:1264) 
[ 15.647558][ C3] load_elf_binary (fs/binfmt_elf.c:1003) 
[ 15.647564][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 15.647569][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.647572][ C3] ? __pfx_load_elf_binary (fs/binfmt_elf.c:825) 
[ 15.647576][ C3] ? exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 15.647580][ C3] exec_binprm (fs/exec.c:1778 fs/exec.c:1810) 
[ 15.647584][ C3] ? __pfx_exec_binprm (fs/exec.c:1794) 
[ 15.647587][ C3] ? bprm_execve (fs/exec.c:1852 fs/exec.c:1838) 
[ 15.647591][ C3] bprm_execve (fs/exec.c:1862 fs/exec.c:1838) 
[ 15.647594][ C3] do_execveat_common.isra.0 (fs/exec.c:1968) 
[ 15.647598][ C3] __x64_sys_execve (fs/exec.c:2113) 
[ 15.647602][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.647605][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.647608][    C3] RIP: 0033:0x7fed3b18a40b
[ 15.647612][ C3] Code: Unable to access opcode bytes at 0x7fed3b18a3e1.

Code starting with the faulting instruction
===========================================
[   15.647614][    C3] RSP: 002b:00007ffd6faf2148 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
[   15.647616][    C3] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fed3b18a40b
[   15.647618][    C3] RDX: 00005628a4a18640 RSI: 00005628a4a0bd90 RDI: 00005628a4a25a00
[   15.647620][    C3] RBP: 00005628a4a25a00 R08: 00005628a4a1fa40 R09: 0000000000000020
[   15.647622][    C3] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff
[   15.647623][    C3] R13: 00005628a4a0bd90 R14: 00005628a4a18640 R15: 00005628a4a07660
| [   17.462652][    C2] INFO: lockdep is turned off.
| [   17.462836][    C2] Preemption disabled at:
| [ 17.462838][ C2] 0x0 
| [   17.463179][    C2] Tainted: [W]=WARN
[   17.463181][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.463183][    C2] Call Trace:
[   17.463186][    C2]  <IRQ>
[ 17.463188][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.463199][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 17.463207][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.463213][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.463216][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.463222][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.463230][ 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) 
[ 17.463236][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.463239][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.463245][ 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) 
[ 17.463250][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.463253][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.463260][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.463263][ C2] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.463270][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.463275][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.463278][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.463283][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.463288][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.463293][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.463296][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.463299][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.463301][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.463307][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 17.463310][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.463314][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.463320][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.463325][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.463330][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.463335][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.463339][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.463343][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.463346][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.463351][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.463356][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.463362][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.463368][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.463373][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.463378][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.463381][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.463383][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.463387][    C2]  </IRQ>
[   17.463388][    C2]  <TASK>
[ 17.463389][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.463392][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.463397][ C2] Code: 60 b8 00 e9 c3 57 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 75 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   17.463400][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   17.463404][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffa6d5ba19
[   17.463407][    C2] RDX: ffffed1006c2667b RSI: ffffffffa70511e0 RDI: ffffffffa458633f
[   17.463408][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c2667a
[   17.463410][    C2] R10: ffff8880361333d3 R11: ffff888007bf2858 R12: 0000000000000000
[   17.463412][    C2] R13: ffff888001bf2340 R14: dffffc0000000000 R15: 0000000000000000
[ 17.463416][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.463419][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.463424][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.463427][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.463429][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.463433][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.463438][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 17.463443][ C2] do_idle (kernel/sched/idle.c:325) 
[ 17.463447][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.463451][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.463455][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


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