======================================
| [ 20.935194][ C2] #1: ffffffffb5742e30 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce (./include/linux/srcu.h:164 ./include/linux/srcu.h:256 mm/kasan/quarantine.c:259) 
| [ 20.935606][ C2] #2: ffffc90000238ae8 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [   20.935959][    C2]
| [   20.935959][    C2] stack backtrace:
[   20.936223][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.936225][    C2] Call Trace:
[   20.936227][    C2]  <IRQ>
[ 20.936230][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.936239][ C2] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 20.936249][ C2] __icmp_send (./include/net/net_namespace.h:404 ./include/linux/netdevice.h:2669 net/ipv4/icmp.c:616) 
[ 20.936260][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 20.936267][ C2] ? __pfx___icmp_send (net/ipv4/icmp.c:596) 
[ 20.936277][ C2] ? trace_pelt_cfs_tp (./include/trace/events/sched.h:778 (discriminator 21)) 
[ 20.936287][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.936293][ C2] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 20.936305][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 20.936309][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 20.936312][ C2] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 20.936315][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 20.936324][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 20.936333][ C2] ipv4_send_dest_unreach (net/ipv4/route.c:1241) 
[ 20.936339][ C2] ? neigh_invalidate (net/core/neighbour.c:1008) 
[ 20.936345][ C2] ? __pfx_ipv4_send_dest_unreach (net/ipv4/route.c:1215) 
[ 20.936358][ C2] ipv4_link_failure (./include/linux/skbuff.h:1152 ./include/net/route.h:88 net/ipv4/route.c:1250) 
[ 20.936363][ C2] arp_error_report (./include/net/dst.h:429 net/ipv4/arp.c:296) 
[ 20.936370][ C2] neigh_invalidate (net/core/neighbour.c:1008) 
[ 20.936379][ C2] neigh_timer_handler (net/core/neighbour.c:1109 (discriminator 2)) 
[ 20.936389][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 20.936392][ C2] call_timer_fn (kernel/time/timer.c:1789) 
[ 20.936395][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 20.936398][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 20.936402][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 20.936406][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 20.936413][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 20.936425][ C2] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 20.936428][ C2] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 20.936439][ C2] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 20.936442][ C2] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 20.936450][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 20.936456][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 20.936461][ C2] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 20.936463][ C2] ? timer_expire_remote (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2177) 
[ 20.936474][ C2] timer_expire_remote (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2177) 
[ 20.936478][ C2] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:147 kernel/time/timer_migration.c:961) 
[ 20.936486][ C2] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:905) 
[ 20.936489][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 20.936494][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 20.936497][ C2] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 20.936503][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 20.936514][ C2] tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 20.936520][ C2] ? __pfx_tmigr_handle_remote_up (kernel/time/timer_migration.c:1005) 
[ 20.936525][ C2] __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 20.936536][ C2] tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 20.936540][ C2] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1059) 
[ 20.936545][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 20.936552][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 20.936562][ C2] handle_softirqs (kernel/softirq.c:561) 
[ 20.936576][ C2] __irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662) 
[ 20.936579][ C2] irq_exit_rcu (kernel/softirq.c:680) 
[ 20.936582][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   20.936587][    C2]  </IRQ>
[   20.936588][    C2]  <TASK>
[ 20.936591][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.936596][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.936602][ C2] Code: 10 e8 81 74 88 fd 48 89 ef e8 c9 e4 88 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 75 7d b0 4b <74> 0e 5b 5d c3 cc cc cc cc e8 8f 03 ae fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	81 74 88 fd 48 89 ef 	xorl   $0xe8ef8948,-0x3(%rax,%rcx,4)
   9:	e8 
   a:	c9                   	leave
   b:	e4 88                	in     $0x88,%al
   d:	fd                   	std
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 75 7d b0 4b 	decl   %gs:0x4bb07d75(%rip)        # 0x4bb07d9f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 8f 03 ae fd       	call   0xfffffffffdae03c7
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 8f 03 ae fd       	call   0xfffffffffdae039d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[   20.936605][    C2] RSP: 0018:ffffc900006e78c8 EFLAGS: 00000286
[   20.936608][    C2] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff6ec64c3
[   20.936610][    C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb4534761
[   20.936612][    C2] RBP: ffff88800192d080 R08: 0000000000000001 R09: fffffbfff6ec43e5
[   20.936615][    C2] R10: ffffffffb7621f2f R11: ffff8880101f8040 R12: ffff88800c48ed48
[   20.936616][    C2] R13: 0000000000000000 R14: ffffc900006e7918 R15: ffff88800c4bcda8
[ 20.936628][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.936636][ C2] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 20.936643][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:357 mm/kasan/quarantine.c:287) 
[ 20.936650][ C2] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 20.936658][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4115 mm/slub.c:4164 mm/slub.c:4171) 
[ 20.936665][ C2] ? vma_merge_new_range (mm/vma.c:987 (discriminator 1)) 
[ 20.936675][ C2] vm_area_alloc (kernel/fork.c:472) 
[ 20.936680][ C2] __mmap_region (mm/vma.c:2342 mm/vma.c:2457) 
[ 20.936689][ C2] ? __pfx___mmap_region (mm/vma.c:2437) 
[ 20.936692][ C2] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 20.936701][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 20.936716][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.936719][ C2] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 20.936762][ 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:2519) 
[ 20.936772][ C2] do_mmap (mm/mmap.c:561) 
[ 20.936783][ C2] ? __pfx_do_mmap (mm/mmap.c:342) 
[ 20.936786][ C2] ? down_write_killable (./arch/x86/include/asm/atomic64_64.h:20 ./include/linux/atomic/atomic-arch-fallback.h:2629 ./include/linux/atomic/atomic-long.h:79 ./include/linux/atomic/atomic-instrumented.h:3224 kernel/locking/rwsem.c:143 kernel/locking/rwsem.c:268 kernel/locking/rwsem.c:1303 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1590) 
[ 20.936791][ C2] ? __pfx_down_write_killable (kernel/locking/rwsem.c:1586) 
[ 20.936796][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 20.936804][ C2] vm_mmap_pgoff (mm/util.c:575) 
[ 20.936817][ C2] ? __pfx_vm_mmap_pgoff (mm/util.c:565) 
[ 20.936823][ C2] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1417) 
[ 20.936838][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 20.936845][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.936848][    C2] RIP: 0033:0x7f8a26781116
[ 20.936853][ 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
[   20.936856][    C2] RSP: 002b:00007ffe62838778 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
[   20.936859][    C2] RAX: ffffffffffffffda RBX: 0000000000000032 RCX: 00007f8a26781116
[   20.936861][    C2] RDX: 0000000000000003 RSI: 000000000000cf90 RDI: 00007f8a26682000
[   20.936863][    C2] RBP: 00007f8a26682000 R08: 00000000ffffffff R09: 0000000000000000
[   20.936864][    C2] R10: 0000000000000032 R11: 0000000000000206 R12: 00007ffe62838820


Finger prints:
lockdep_rcu_suspicious:__icmp_send:ipv4_send_dest_unreach:ipv4_link_failure:arp_error_report