======================================
| [   21.531554][  T308] ==================================================================
| [ 21.531829][ T308] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
| [   21.532122][  T308] Read of size 8 at addr ffffffff98ee3970 by task nstat/308
| [   21.532360][  T308]
[   21.532450][  T308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   21.532453][  T308] Call Trace:
[   21.532455][  T308]  <TASK>
[ 21.532458][ T308] dump_stack_lvl (lib/dump_stack.c:123) 
[ 21.532467][ T308] print_address_description.constprop.0 (mm/kasan/report.c:379) 
[ 21.532474][ T308] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 21.532478][ T308] print_report (mm/kasan/report.c:483) 
[ 21.532481][ T308] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 21.532485][ T308] ? kasan_addr_to_slab (./include/linux/mm.h:1180 mm/kasan/../slab.h:187 mm/kasan/common.c:38) 
[ 21.532488][ T308] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 21.532491][ T308] kasan_report (mm/kasan/report.c:597) 
[ 21.532495][ T308] ? snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 21.532501][ T308] snmp6_seq_show_item64.constprop.0 (net/ipv6/proc.c:211) 
[ 21.532507][ T308] ? sockstat6_seq_show (net/ipv6/proc.c:202) 
[ 21.532519][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 21.532526][ T308] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 21)) 
[ 21.532532][ T308] ? __kvmalloc_node_noprof (mm/slub.c:5055) 
[ 21.532537][ T308] snmp6_seq_show (net/ipv6/proc.c:224) 
[ 21.532541][ T308] seq_read_iter (fs/seq_file.c:231) 
[ 21.532551][ T308] seq_read (fs/seq_file.c:163) 
[ 21.532554][ T308] ? seq_read_iter (fs/seq_file.c:152) 
[ 21.532558][ T308] ? __might_fault (mm/memory.c:6958 mm/memory.c:6952) 
[ 21.532565][ T308] ? __might_fault (mm/memory.c:6958 mm/memory.c:6952) 
[ 21.532569][ T308] ? cp_new_stat (fs/stat.c:471) 
[ 21.532573][ T308] ? inode_set_bytes (fs/stat.c:471) 
[ 21.532577][ T308] proc_reg_read (fs/proc/inode.c:308 fs/proc/inode.c:320) 
[ 21.532584][ T308] vfs_read (fs/read_write.c:570) 
[ 21.532589][ T308] ? vfs_getattr_nosec (fs/stat.c:218) 
[ 21.532592][ T308] ? kernel_read (fs/read_write.c:553) 
[ 21.532595][ T308] ? vfs_fstat (./include/linux/file.h:62 ./include/linux/file.h:84 fs/stat.c:278) 
[ 21.532598][ T308] ? __do_sys_newfstat (fs/stat.c:551) 
[ 21.532601][ T308] ? __do_sys_fstat (fs/stat.c:551) 
[ 21.532607][ T308] ksys_read (fs/read_write.c:715) 
[ 21.532610][ T308] ? vfs_write (fs/read_write.c:705) 
[ 21.532616][ T308] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.532624][ T308] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.532628][  T308] RIP: 0033:0x7ff552628292
[ 21.532632][ T308] 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
[   21.532635][  T308] RSP: 002b:00007ffcbb2fb348 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[   21.532640][  T308] RAX: ffffffffffffffda RBX: 0000000032b80910 RCX: 00007ff552628292
[   21.532642][  T308] RDX: 0000000000000400 RSI: 0000000032b80500 RDI: 0000000000000006
[   21.532644][  T308] RBP: 00007ff5527205c0 R08: 0000000000000006 R09: 0000000000000000
[   21.532647][  T308] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000032b80910


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