======================================
| xx__-> [   17.306990][  T259] ==================================================================
| [ 17.307306][ T259] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
| [   17.307617][  T259] Read of size 8 at addr ffffffff866d4290 by task nstat/259
| [   17.307916][  T259]
[   17.308014][  T259] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.308017][  T259] Call Trace:
[   17.308019][  T259]  <TASK>
[ 17.308021][ T259] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.308031][ T259] print_address_description.constprop.0 (mm/kasan/report.c:379) 
[ 17.308038][ T259] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 17.308042][ T259] print_report (mm/kasan/report.c:483) 
[ 17.308045][ T259] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 17.308048][ T259] ? kasan_addr_to_slab (./include/linux/mm.h:1180 mm/kasan/../slab.h:187 mm/kasan/common.c:38) 
[ 17.308052][ T259] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 17.308055][ T259] kasan_report (mm/kasan/report.c:597) 
[ 17.308059][ T259] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 17.308064][ T259] snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 17.308070][ T259] ? sockstat6_seq_show (net/ipv6/proc.c:202) 
[ 17.308082][ T259] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 17.308086][ T259] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 21)) 
[ 17.308093][ T259] ? __kvmalloc_node_noprof (mm/slub.c:5055) 
[ 17.308098][ T259] snmp6_seq_show (net/ipv6/proc.c:224) 
[ 17.308101][ T259] seq_read_iter (fs/seq_file.c:231) 
[ 17.308112][ T259] seq_read (fs/seq_file.c:163) 
[ 17.308115][ T259] ? seq_read_iter (fs/seq_file.c:152) 
[ 17.308119][ T259] ? __might_fault (mm/memory.c:6958 mm/memory.c:6952) 
[ 17.308124][ T259] ? efi_thunk_set_variable (arch/x86/platform/efi/efi_64.c:596) 
[ 17.308130][ T259] ? __might_fault (mm/memory.c:6958 mm/memory.c:6952) 
[ 17.308135][ T259] ? cp_new_stat (fs/stat.c:471) 
[ 17.308139][ T259] ? inode_set_bytes (fs/stat.c:471) 
[ 17.308143][ T259] proc_reg_read (fs/proc/inode.c:308 fs/proc/inode.c:320) 
[ 17.308150][ T259] vfs_read (fs/read_write.c:570) 
[ 17.308155][ T259] ? vfs_getattr_nosec (fs/stat.c:218) 
[ 17.308158][ T259] ? kernel_read (fs/read_write.c:553) 
[ 17.308162][ T259] ? vfs_fstat (./include/linux/file.h:62 ./include/linux/file.h:84 fs/stat.c:278) 
[ 17.308165][ T259] ? __do_sys_newfstat (fs/stat.c:551) 
[ 17.308167][ T259] ? __do_sys_fstat (fs/stat.c:551) 
[ 17.308174][ T259] ksys_read (fs/read_write.c:715) 
[ 17.308177][ T259] ? vfs_write (fs/read_write.c:705) 
[ 17.308183][ T259] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.308188][ T259] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.308192][  T259] RIP: 0033:0x7f7204ecb292
[ 17.308196][ T259] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 6a 15 0c 00 e8 65 e1 01 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89 54 24
All code
========
   0:	c0 e9 b2             	shr    $0xb2,%cl
   3:	fe                   	(bad)
   4:	ff                   	(bad)
   5:	ff 50 48             	call   *0x48(%rax)
   8:	8d 3d 6a 15 0c 00    	lea    0xc156a(%rip),%edi        # 0xc1578
   e:	e8 65 e1 01 00       	call   0x1e178
  13:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  18:	f3 0f 1e fa          	endbr64
  1c:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  23:	00 
  24:	85 c0                	test   %eax,%eax
  26:	75 10                	jne    0x38
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 56                	ja     0x88
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	48 83 ec 28          	sub    $0x28,%rsp
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	54                   	push   %rsp
  3f:	24                   	.byte 0x24

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 56                	ja     0x5e
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	48 83 ec 28          	sub    $0x28,%rsp
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	54                   	push   %rsp
  15:	24                   	.byte 0x24
[   17.308200][  T259] RSP: 002b:00007ffd585b3438 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[   17.308204][  T259] RAX: ffffffffffffffda RBX: 00000000020c1910 RCX: 00007f7204ecb292
[   17.308206][  T259] RDX: 0000000000000400 RSI: 00000000020c1500 RDI: 000000000000000a
[   17.308208][  T259] RBP: 00007f7204fc35c0 R08: 000000000000000a R09: 0000000000000000
[   17.308210][  T259] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000020c1910


Finger prints:
print_report:kasan_report:snmp6_seq_show:seq_read_iter:seq_read