======================================
| [ 21.135915][ C3] #0: ffff8880017b1190 (mapping.invalidate_lock){.+.+}-{4:4}, at: page_cache_ra_unbounded (./include/linux/pagemap.h:1550 mm/readahead.c:241) 
| [ 21.136316][ C3] #1: ffffc90000290d60 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [   21.136689][    C3]
| [   21.136689][    C3] stack backtrace:
[   21.136962][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.136964][    C3] Call Trace:
[   21.136966][    C3]  <IRQ>
[ 21.136968][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 21.136976][ C3] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 21.136985][ C3] icmp6_send (./include/net/net_namespace.h:404 ./include/linux/netdevice.h:2669 net/ipv6/icmp.c:476) 
[ 21.137004][ C3] ? __pfx_icmp6_send (net/ipv6/icmp.c:452) 
[ 21.137013][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 21.137017][ 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) 
[ 21.137020][ C3] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 21.137030][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 21.137036][ C3] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 21.137042][ C3] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 21.137045][ C3] ? neigh_invalidate (net/core/neighbour.c:1008) 
[ 21.137050][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 21.137053][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853) 
[ 21.137064][ C3] ip6_link_failure (./include/linux/skbuff.h:1152 net/ipv6/route.c:2801) 
[ 21.137072][ C3] ndisc_error_report (./include/net/dst.h:429 net/ipv6/ndisc.c:731) 
[ 21.137079][ C3] neigh_invalidate (net/core/neighbour.c:1008) 
[ 21.137088][ C3] neigh_timer_handler (net/core/neighbour.c:1109 (discriminator 2)) 
[ 21.137097][ C3] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 21.137100][ C3] call_timer_fn (kernel/time/timer.c:1789) 
[ 21.137104][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 21.137106][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 21.137110][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 21.137113][ 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) 
[ 21.137121][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 21.137132][ C3] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 21.137135][ C3] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 21.137145][ C3] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 21.137148][ C3] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 21.137157][ 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) 
[ 21.137163][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 21.137167][ C3] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 21.137170][ C3] ? run_timer_softirq (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 21.137179][ C3] run_timer_softirq (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 21.137184][ C3] handle_softirqs (kernel/softirq.c:561) 
[ 21.137197][ C3] __irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662) 
[ 21.137200][ C3] irq_exit_rcu (kernel/softirq.c:680) 
[ 21.137203][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   21.137207][    C3]  </IRQ>
[   21.137208][    C3]  <TASK>
[ 21.137210][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 21.137214][ C3] RIP: 0010:folio_alloc_noprof (./include/linux/page-flags.h:829 ./include/linux/page-flags.h:850 mm/internal.h:711 mm/mempolicy.c:2371) 
[ 21.137219][ C3] Code: df 48 c1 ea 03 0f b6 14 02 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f0 00 00 00 41 c7 44 24 34 01 00 00 00 4c 89 e7 <e8> 2d 61 ff ff be 08 00 00 00 48 89 c5 48 89 c7 e8 ad f8 00 00 48
All code
========
   0:	df 48 c1             	fisttps -0x3f(%rax)
   3:	ea                   	(bad)
   4:	03 0f                	add    (%rdi),%ecx
   6:	b6 14                	mov    $0x14,%dh
   8:	02 48 89             	add    -0x77(%rax),%cl
   b:	e8 83 e0 07 83       	call   0xffffffff8307e093
  10:	c0 03 38             	rolb   $0x38,(%rbx)
  13:	d0 7c 08 84          	sarb   -0x7c(%rax,%rcx,1)
  17:	d2 0f                	rorb   %cl,(%rdi)
  19:	85 f0                	test   %esi,%eax
  1b:	00 00                	add    %al,(%rax)
  1d:	00 41 c7             	add    %al,-0x39(%rcx)
  20:	44 24 34             	rex.R and $0x34,%al
  23:	01 00                	add    %eax,(%rax)
  25:	00 00                	add    %al,(%rax)
  27:	4c 89 e7             	mov    %r12,%rdi
  2a:*	e8 2d 61 ff ff       	call   0xffffffffffff615c		<-- trapping instruction
  2f:	be 08 00 00 00       	mov    $0x8,%esi
  34:	48 89 c5             	mov    %rax,%rbp
  37:	48 89 c7             	mov    %rax,%rdi
  3a:	e8 ad f8 00 00       	call   0xf8ec
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	e8 2d 61 ff ff       	call   0xffffffffffff6132
   5:	be 08 00 00 00       	mov    $0x8,%esi
   a:	48 89 c5             	mov    %rax,%rbp
   d:	48 89 c7             	mov    %rax,%rdi
  10:	e8 ad f8 00 00       	call   0xf8c2
  15:	48                   	rex.W
[   21.137222][    C3] RSP: 0000:ffffc900008b78f0 EFLAGS: 00000246
[   21.137225][    C3] RAX: 0000000000000007 RBX: ffffc900008b79e0 RCX: ffffffffa4eb65a8
[   21.137228][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea000030d080
[   21.137229][    C3] RBP: ffffea000030d0b4 R08: 0000000000000001 R09: fffff94000061a16
[   21.137231][    C3] R10: ffffea000030d0b7 R11: ffff88800ac50040 R12: ffffea000030d080
[   21.137233][    C3] R13: ffffea0000d30280 R14: 0000000000000116 R15: ffff8880017b10c8
[ 21.137242][ C3] ? folio_alloc_noprof (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/page_ref.h:99 mm/internal.h:451 mm/mempolicy.c:2364 mm/mempolicy.c:2371) 
[ 21.137251][ C3] ractl_alloc_folio.constprop.0 (mm/readahead.c:187) 
[ 21.137257][ C3] page_cache_ra_unbounded (mm/readahead.c:271) 
[ 21.137271][ C3] do_sync_mmap_readahead (mm/filemap.c:3261) 
[ 21.137280][ C3] ? __pfx_do_sync_mmap_readahead (mm/filemap.c:3193) 
[ 21.137293][ C3] ? __filemap_get_folio (mm/filemap.c:1905) 
[ 21.137300][ C3] filemap_fault (mm/filemap.c:3447) 
[ 21.137306][ C3] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 21.137309][ C3] ? do_fault_around (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 mm/memory.c:5353) 
[ 21.137315][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 21.137320][ C3] ? __pfx_filemap_fault (mm/filemap.c:3406) 
[ 21.137330][ C3] ? do_fault_around (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 mm/memory.c:5353) 
[ 21.137334][ C3] ? __pfx_filemap_map_pages (mm/filemap.c:3767) 
[ 21.137343][ C3] __do_fault (mm/memory.c:4977) 
[ 21.137349][ C3] do_pte_missing (mm/memory.c:5392 mm/memory.c:5526 mm/memory.c:4047) 
[ 21.137351][ C3] ? handle_pte_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/pgtable.h:136 mm/memory.c:5883) 
[ 21.137358][ C3] handle_pte_fault (mm/memory.c:5889) 
[ 21.137364][ C3] ? __pfx_handle_pte_fault (mm/memory.c:5846) 
[ 21.137377][ C3] __handle_mm_fault (mm/memory.c:6032) 
[ 21.137381][ C3] ? __pfx___handle_mm_fault (mm/memory.c:5941) 
[ 21.137399][ C3] ? __pfx_lock_vma_under_rcu (mm/memory.c:6357) 
[ 21.137406][ C3] handle_mm_fault (mm/memory.c:6213) 
[ 21.137410][ C3] ? __pfx_handle_mm_fault (mm/memory.c:6168) 
[ 21.137423][ C3] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 21.137437][ 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) 
[ 21.137443][ C3] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   21.137445][    C3] RIP: 0033:0x7f6a6bc5a970
[ 21.137453][ C3] Code: Unable to access opcode bytes at 0x7f6a6bc5a946.

Code starting with the faulting instruction
===========================================
[   21.137454][    C3] RSP: 002b:00007ffc433adb38 EFLAGS: 00010246
[   21.137456][    C3] RAX: 0000000000000000 RBX: 00007f6a6be01870 RCX: 00007f6a6be01930
[   21.137458][    C3] RDX: 00007ffc433adc68 RSI: 00007ffc433adc28 RDI: 000000000000001e
[   21.137459][    C3] RBP: 0000000000000007 R08: 0000000000000000 R09: 00000000069682ac
[   21.137461][    C3] R10: fffffffffffffe90 R11: 0000000000000246 R12: 00007ffc433adc28


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