======================================
| [ 929.016767][ C3] #2: ffff888005de71d8 (&fsvq->lock){+.+.}-{3:3}, at: virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1434) 
| [ 929.017140][ C3] #3: ffffc90000290d60 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [  929.017511][    C3]
| [  929.017511][    C3] stack backtrace:
[  929.017765][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  929.017768][    C3] Call Trace:
[  929.017770][    C3]  <IRQ>
[ 929.017773][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 929.017781][ C3] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 929.017791][ C3] icmp6_send (./include/net/net_namespace.h:404 ./include/linux/netdevice.h:2669 net/ipv6/icmp.c:476) 
[ 929.017812][ C3] ? __pfx_icmp6_send (net/ipv6/icmp.c:452) 
[ 929.017821][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 929.017826][ C3] ? 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) 
[ 929.017829][ C3] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 929.017839][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 929.017846][ C3] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 929.017852][ C3] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 929.017855][ C3] ? neigh_invalidate (net/core/neighbour.c:1008) 
[ 929.017861][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 929.017865][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853) 
[ 929.017876][ C3] ip6_link_failure (./include/linux/skbuff.h:1152 net/ipv6/route.c:2801) 
[ 929.017885][ C3] ndisc_error_report (./include/net/dst.h:429 net/ipv6/ndisc.c:731) 
[ 929.017892][ C3] neigh_invalidate (net/core/neighbour.c:1008) 
[ 929.017901][ C3] neigh_timer_handler (net/core/neighbour.c:1109 (discriminator 2)) 
[ 929.017911][ C3] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 929.017915][ C3] call_timer_fn (kernel/time/timer.c:1789) 
[ 929.017917][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 929.017920][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 929.017924][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 929.017928][ C3] ? 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) 
[ 929.017935][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 929.017946][ C3] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 929.017950][ C3] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 929.017960][ C3] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 929.017963][ C3] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 929.017973][ C3] ? 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) 
[ 929.017981][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 929.017985][ C3] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 929.017988][ C3] ? run_timer_softirq (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 929.017997][ C3] run_timer_softirq (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 929.018002][ C3] handle_softirqs (kernel/softirq.c:561) 
[ 929.018016][ C3] __irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662) 
[ 929.018019][ C3] irq_exit_rcu (kernel/softirq.c:680) 
[ 929.018022][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[  929.018026][    C3]  </IRQ>
[  929.018027][    C3]  <TASK>
[ 929.018030][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 929.018034][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 929.018039][ C3] 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 30 67 <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 30 67 	decl   %gs:0x67307d75(%rip)        # 0x67307d9f
  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
[  929.018042][    C3] RSP: 0000:ffffc90000716f60 EFLAGS: 00000286
[  929.018045][    C3] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff37c779c
[  929.018047][    C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff98d34761
[  929.018048][    C3] RBP: ffff888001040e00 R08: 0000000000000001 R09: fffffbfff37c43e8
[  929.018050][    C3] R10: ffffffff9be21f47 R11: ffff88800a78c5c0 R12: ffff888001040e00
[  929.018052][    C3] R13: ffffea00003f6200 R14: ffff8880010430c0 R15: ffff88800fd89c00
[ 929.018063][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 929.018071][ C3] get_partial_node.part.0 (mm/slub.c:2870) 
[ 929.018084][ C3] ? virtqueue_add_split (drivers/virtio/virtio_ring.c:493 drivers/virtio/virtio_ring.c:564) 
[ 929.018090][ C3] ___slab_alloc (mm/slub.c:2831 mm/slub.c:2948 mm/slub.c:3806) 
[ 929.018093][ C3] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 929.018099][ C3] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 929.018102][ C3] ? virtqueue_add_split (drivers/virtio/virtio_ring.c:493 drivers/virtio/virtio_ring.c:564) 
[ 929.018106][ C3] ? ___slab_alloc (mm/slub.c:3658) 
[ 929.018114][ C3] ? page_cache_ra_unbounded (./include/linux/fs.h:932 mm/readahead.c:299) 
[ 929.018117][ C3] ? do_sync_mmap_readahead (mm/filemap.c:3261) 
[ 929.018124][ C3] ? filemap_fault (mm/filemap.c:3447) 
[ 929.018126][ C3] ? __do_fault (mm/memory.c:4977) 
[ 929.018132][ C3] ? do_pte_missing (mm/memory.c:5422 mm/memory.c:5528 mm/memory.c:4047) 
[ 929.018135][ C3] ? handle_pte_fault (mm/memory.c:5889) 
[ 929.018141][ C3] ? virtqueue_add_split (drivers/virtio/virtio_ring.c:493 drivers/virtio/virtio_ring.c:564) 
[ 929.018145][ C3] ? __kmalloc_noprof (mm/slub.c:3916 mm/slub.c:3991 mm/slub.c:4152 mm/slub.c:4293 mm/slub.c:4306) 
[ 929.018149][ C3] __kmalloc_noprof (mm/slub.c:3916 mm/slub.c:3991 mm/slub.c:4152 mm/slub.c:4293 mm/slub.c:4306) 
[ 929.018159][ C3] virtqueue_add_split (drivers/virtio/virtio_ring.c:493 drivers/virtio/virtio_ring.c:564) 
[ 929.018163][ C3] ? hlock_class (./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/locking/lockdep.c:230) 
[ 929.018177][ C3] ? __pfx_virtqueue_add_split (drivers/virtio/virtio_ring.c:538) 
[ 929.018183][ C3] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 929.018188][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 929.018197][ C3] virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2282 drivers/virtio/virtio_ring.c:2316) 
[ 929.018209][ C3] virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1441) 
[ 929.018223][ C3] ? __pfx_virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1377) 
[ 929.018236][ C3] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 929.018242][ C3] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 929.018245][ C3] ? fuse_get_unique (fs/fuse/dev.c:222) 
[ 929.018252][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 929.018255][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 929.018261][ C3] ? 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) 
[ 929.018266][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 929.018272][ C3] ? fuse_get_unique (fs/fuse/dev.c:222) 
[ 929.018277][ 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) 
[ 929.018287][ C3] virtio_fs_send_req (fs/fuse/virtio_fs.c:1500) 
[ 929.018290][ C3] ? fuse_send_one (fs/fuse/dev.c:305) 
[ 929.018297][ C3] flush_bg_queue (fs/fuse/dev.c:323) 
[ 929.018308][ C3] fuse_request_queue_background (./include/linux/spinlock.h:391 fs/fuse/dev.c:617) 
[ 929.018315][ C3] fuse_simple_background (fs/fuse/dev.c:642) 
[ 929.018321][ C3] fuse_send_readpages (fs/fuse/file.c:993) 
[ 929.018331][ C3] fuse_readahead (fs/fuse/file.c:1031) 
[ 929.018347][ C3] ? __pfx_fuse_readahead (fs/fuse/file.c:1004) 
[ 929.018353][ C3] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 929.018355][ C3] ? __folio_batch_add_and_move (./include/linux/local_lock_internal.h:38 mm/swap.c:201) 
[ 929.018360][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 929.018364][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 929.018374][ C3] read_pages (mm/readahead.c:161) 
[ 929.018378][ C3] ? __folio_batch_add_and_move (./include/linux/local_lock_internal.h:38 mm/swap.c:201) 
[ 929.018388][ C3] ? __pfx_read_pages (mm/readahead.c:148) 
[ 929.018408][ C3] page_cache_ra_unbounded (./include/linux/fs.h:932 mm/readahead.c:299) 
[ 929.018423][ C3] do_sync_mmap_readahead (mm/filemap.c:3261) 
[ 929.018429][ C3] ? __pfx_do_sync_mmap_readahead (mm/filemap.c:3193) 
[ 929.018442][ C3] ? __filemap_get_folio (mm/filemap.c:1905) 
[ 929.018450][ C3] filemap_fault (mm/filemap.c:3447) 
[ 929.018456][ C3] ? alloc_pages_mpol (mm/mempolicy.c:2272) 
[ 929.018460][ C3] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 929.018464][ C3] ? __pfx_alloc_pages_mpol (mm/mempolicy.c:2227) 
[ 929.018467][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 929.018471][ C3] ? __pfx_filemap_fault (mm/filemap.c:3406) 
[ 929.018473][ C3] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2749 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3317 kernel/locking/rwsem.c:1345) 
[ 929.018484][ C3] ? vma_alloc_folio_noprof (./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/page-flags.h:829 ./include/linux/page-flags.h:850 mm/internal.h:711 mm/mempolicy.c:2295 mm/mempolicy.c:2324) 
[ 929.018487][ C3] ? __vmf_anon_prepare (./include/linux/mmap_lock.h:217 mm/memory.c:3392) 
[ 929.018492][ C3] ? __pfx_vma_alloc_folio_noprof (mm/mempolicy.c:2315) 
[ 929.018500][ C3] __do_fault (mm/memory.c:4977) 
[ 929.018506][ C3] do_pte_missing (mm/memory.c:5422 mm/memory.c:5528 mm/memory.c:4047) 
[ 929.018508][ C3] ? handle_pte_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/pgtable.h:136 mm/memory.c:5883) 
[ 929.018515][ C3] handle_pte_fault (mm/memory.c:5889) 
[ 929.018522][ C3] ? __pfx_handle_pte_fault (mm/memory.c:5846) 
[ 929.018534][ C3] __handle_mm_fault (mm/memory.c:6032) 
[ 929.018539][ C3] ? __pfx___handle_mm_fault (mm/memory.c:5941) 
[ 929.018557][ C3] ? __pfx_lock_vma_under_rcu (mm/memory.c:6357) 
[ 929.018564][ C3] handle_mm_fault (mm/memory.c:6213) 
[ 929.018569][ C3] ? __pfx_handle_mm_fault (mm/memory.c:6168) 
[ 929.018581][ C3] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 929.018596][ C3] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:147 arch/x86/mm/fault.c:1489 arch/x86/mm/fault.c:1539) 
[ 929.018602][ C3] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[  929.018604][    C3] RIP: 0033:0x7f8790133998
[ 929.018609][ C3] Code: 00 00 f3 0f 1e fa 66 0f 6e c6 48 89 f8 66 0f 60 c0 66 0f 61 c0 66 0f 70 c0 00 48 83 fa 10 0f 82 7e 00 00 00 48 83 fa 20 77 12 <0f> 11 44 17 f0 0f 11 07 c3 0f 11 47 e0 0f 11 47 f0 c3 0f 11 07 0f
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	f3 0f 1e fa          	endbr64
   6:	66 0f 6e c6          	movd   %esi,%xmm0
   a:	48 89 f8             	mov    %rdi,%rax
   d:	66 0f 60 c0          	punpcklbw %xmm0,%xmm0
  11:	66 0f 61 c0          	punpcklwd %xmm0,%xmm0
  15:	66 0f 70 c0 00       	pshufd $0x0,%xmm0,%xmm0
  1a:	48 83 fa 10          	cmp    $0x10,%rdx
  1e:	0f 82 7e 00 00 00    	jb     0xa2
  24:	48 83 fa 20          	cmp    $0x20,%rdx
  28:	77 12                	ja     0x3c
  2a:*	0f 11 44 17 f0       	movups %xmm0,-0x10(%rdi,%rdx,1)		<-- trapping instruction
  2f:	0f 11 07             	movups %xmm0,(%rdi)
  32:	c3                   	ret
  33:	0f 11 47 e0          	movups %xmm0,-0x20(%rdi)
  37:	0f 11 47 f0          	movups %xmm0,-0x10(%rdi)
  3b:	c3                   	ret
  3c:	0f 11 07             	movups %xmm0,(%rdi)
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 11 44 17 f0       	movups %xmm0,-0x10(%rdi,%rdx,1)
   5:	0f 11 07             	movups %xmm0,(%rdi)
   8:	c3                   	ret
   9:	0f 11 47 e0          	movups %xmm0,-0x20(%rdi)
   d:	0f 11 47 f0          	movups %xmm0,-0x10(%rdi)
  11:	c3                   	ret
  12:	0f 11 07             	movups %xmm0,(%rdi)
  15:	0f                   	.byte 0xf
[  929.018611][    C3] RSP: 002b:00007fffb8031a08 EFLAGS: 00010283
[  929.018613][    C3] RAX: 00007f8790092fe8 RBX: 0000000000000004 RCX: 00007f8790093010
[  929.018615][    C3] RDX: 0000000000000018 RSI: 0000000000000000 RDI: 00007f8790092fe8
[  929.018616][    C3] RBP: 00007fffb8031da0 R08: 00007f8790092fe8 R09: 0000000000019000
[  929.018618][    C3] R10: 0000000000000003 R11: 0000000000000206 R12: 00007fffb8031aa0


Finger prints:
lockdep_rcu_suspicious:icmp6_send:ip6_link_failure:ndisc_error_report:neigh_invalidate