======================================
| [ 4644.621178][T18806] eth1: renamed from tmp
| [ 4665.252137][T18929] eth1: renamed from tmp
| [ 4674.950198][T18972] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] SMP KASAN NOPTI
| [ 4674.950660][T18972] KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f]
[ 4674.951242][T18972] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4674.951472][T18972] RIP: 0010:ip6_rt_pcpu_alloc (./include/net/net_namespace.h:409 ./include/linux/netdevice.h:2709 net/ipv6/route.c:1418) 
[ 4674.951666][T18972] Code: ff 45 0f b7 ef 49 89 c6 e8 9c f9 3a 00 49 8d 86 08 01 00 00 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 bc 03 00 00 4d 8b be 08 01 00 00 44 89 e9 ba ff
All code
========
   0:	ff 45 0f             	incl   0xf(%rbp)
   3:	b7 ef                	mov    $0xef,%bh
   5:	49 89 c6             	mov    %rax,%r14
   8:	e8 9c f9 3a 00       	call   0x3af9a9
   d:	49 8d 86 08 01 00 00 	lea    0x108(%r14),%rax
  14:	48 89 c2             	mov    %rax,%rdx
  17:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df 
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:*	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)		<-- trapping instruction
  2e:	0f 85 bc 03 00 00    	jne    0x3f0
  34:	4d 8b be 08 01 00 00 	mov    0x108(%r14),%r15
  3b:	44 89 e9             	mov    %r13d,%ecx
  3e:	ba                   	.byte 0xba
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 bc 03 00 00    	jne    0x3c6
   a:	4d 8b be 08 01 00 00 	mov    0x108(%r14),%r15
  11:	44 89 e9             	mov    %r13d,%ecx
  14:	ba                   	.byte 0xba
  15:	ff                   	.byte 0xff
[ 4674.952297][T18972] RSP: 0018:ffffc900086c7520 EFLAGS: 00010206
[ 4674.952528][T18972] RAX: dffffc0000000000 RBX: ffff888018fdd600 RCX: 0000000000000001
[ 4674.952796][T18972] RDX: 0000000000000021 RSI: ffffffff8ba538c0 RDI: ffff8880021f1000
[ 4674.953069][T18972] RBP: ffff888018fdd62c R08: 0000000000000000 R09: 0000000000000001
[ 4674.953338][T18972] R10: 0000000000000078 R11: ffffffff8cd88620 R12: ffffc900086c7620
[ 4674.953605][T18972] R13: 0000000000000008 R14: 0000000000000000 R15: 0000000000000008
[ 4674.953881][T18972] FS:  00007f12e5627740(0000) GS:ffff8880de744000(0000) knlGS:0000000000000000
[ 4674.954195][T18972] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4674.954420][T18972] CR2: 0000564613ff6dec CR3: 0000000018f2f005 CR4: 0000000000772ef0
[ 4674.954689][T18972] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4674.954963][T18972] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4674.955229][T18972] PKRU: 55555554
[ 4674.955364][T18972] Call Trace:
[ 4674.955499][T18972]  <TASK>
[4674.955593][T18972] ? __pfx_ip6_rt_pcpu_alloc (net/ipv6/route.c:1407) 
[4674.955775][T18972] ? __pfx_rt6_find_cached_rt.constprop.0.isra.0 (net/ipv6/route.c:1833) 
[4674.956041][T18972] ip6_pol_route (net/ipv6/route.c:1467 net/ipv6/route.c:2302) 
[4674.956225][T18972] ? __pfx_ip6_pol_route (net/ipv6/route.c:2251) 
[4674.956404][T18972] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[4674.956588][T18972] ? fib6_get_table (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/ipv6/ip6_fib.c:295) 
[4674.956765][T18972] __fib6_rule_action (./include/net/ip6_fib.h:617 net/ipv6/fib6_rules.c:237) 
[4674.956943][T18972] ? __pfx_ip6_pol_route_output (net/ipv6/route.c:2647) 
[4674.957121][T18972] ? fib_rule_match (net/core/fib_rules.c:305 (discriminator 1)) 
[4674.957297][T18972] fib_rules_lookup (net/core/fib_rules.c:339 (discriminator 1)) 
[4674.957472][T18972] ? l3mdev_update_flow (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/l3mdev/l3mdev.c:301) 
[4674.957651][T18972] ? __pfx_fib_rules_lookup (net/core/fib_rules.c:315) 
[4674.957830][T18972] ? l3mdev_update_flow (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/l3mdev/l3mdev.c:301) 
[4674.958006][T18972] ? __pfx_ip6_pol_route_output (net/ipv6/route.c:2647) 
[4674.958180][T18972] fib6_rule_lookup (net/ipv6/fib6_rules.c:115) 
[4674.958359][T18972] ? __pfx_fib6_rule_lookup (net/ipv6/fib6_rules.c:99) 
[4674.958540][T18972] ? __pfx_ip6_pol_route_output (net/ipv6/route.c:2647) 
[4674.958722][T18972] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[4674.958901][T18972] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[4674.959081][T18972] ? ip6_route_output_flags (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 net/ipv6/route.c:2692) 
[4674.959258][T18972] ip6_route_output_flags (net/ipv6/route.c:2681 net/ipv6/route.c:2693) 
[4674.959438][T18972] ip6_dst_lookup_tail.constprop.0 (net/ipv6/ip6_output.c:1128) 
[4674.959664][T18972] ip6_dst_lookup_flow (net/ipv6/ip6_output.c:1260) 
[4674.959839][T18972] ? __pfx_ip6_dst_lookup_flow (net/ipv6/ip6_output.c:1255) 
[4674.960021][T18972] ? sk_dst_check (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/sock.h:2125 net/core/sock.c:619) 
[4674.960201][T18972] ip6_sk_dst_lookup_flow (net/ipv6/ip6_output.c:1297) 
[4674.960380][T18972] udpv6_sendmsg (net/ipv6/udp.c:1707) 
[4674.960556][T18972] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[4674.960733][T18972] ? __pfx_ip_generic_getfrag (net/ipv4/ip_output.c:927) 
[4674.960915][T18972] ? __pfx_udpv6_sendmsg (net/ipv6/udp.c:1476) 
[4674.961093][T18972] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[4674.961274][T18972] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[4674.961454][T18972] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[4674.961629][T18972] ? intel_nhlt_get_dmic_geo.part.0 (sound/hda/intel-nhlt.c:57) 
[4674.961847][T18972] ? __might_fault (mm/memory.c:7151 mm/memory.c:7145) 
[4674.962023][T18972] ? __lock_release (kernel/locking/lockdep.c:5534) 
[4674.962206][T18972] ? __sys_sendto (net/socket.c:712 net/socket.c:727 net/socket.c:2180) 
[4674.962385][T18972] __sys_sendto (net/socket.c:712 net/socket.c:727 net/socket.c:2180) 
[4674.962560][T18972] ? __pfx___sys_sendto (net/socket.c:2147) 
[4674.962747][T18972] ? __pfx___sys_recvmsg (net/socket.c:2846) 
[4674.962928][T18972] __x64_sys_sendto (net/socket.c:2183) 
[4674.963102][T18972] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:198 arch/x86/entry/syscall_64.c:90) 
[4674.963282][T18972] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[4674.963464][T18972] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[4674.963641][T18972] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4674.963864][T18972] RIP: 0033:0x7f12e5779a4a
[ 4674.964064][T18972] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[ 4674.964695][T18972] RSP: 002b:00007ffd6ebb3258 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 4674.964962][T18972] RAX: ffffffffffffffda RBX: 000000000000001c RCX: 00007f12e5779a4a
[ 4674.965227][T18972] RDX: 000000000000000c RSI: 000000000040671e RDI: 0000000000000005
[ 4674.965503][T18972] RBP: 0000000000000005 R08: 00007ffd6ebb37e0 R09: 000000000000001c
[ 4674.965763][T18972] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6ebb37e0


Finger prints:
ip6_rt_pcpu_alloc:ip6_pol_route:__fib6_rule_action:fib_rules_lookup:fib6_rule_lookup