Oops: general protection fault, probably for non-canonical address 0xdffffc0000000198: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000cc0-0x0000000000000cc7]
CPU: 2 UID: 0 PID: 9431 Comm: syz.0.950 Not tainted 6.15.0-rc1-syzkaller-00095-g2eb959eeecc6 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:addrconf_add_ifaddr+0x184/0x460 net/ipv6/addrconf.c:3157
Code: 8b b4 24 94 00 00 00 4c 89 ef e8 f7 ba 2c ff 4c 8d b0 c5 0c 00 00 48 89 c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 3c 02 00 00
RSP: 0018:ffffc90006997aa0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007512000
RDX: 0000000000000198 RSI: ffffffff89483132 RDI: ffff88804f030338
RBP: ffffc90006997bb0 R08: 0000000000000000 R09: fffffbfff210ca62
R10: ffffc90006997aa0 R11: 0000000000000000 R12: 1ffff92000d32f54
R13: ffff88804f030000 R14: 0000000000000cc5 R15: ffff8880352c9980
FS:  00007fee5dcb66c0(0000) GS:ffff8880d6bb3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fee5cd72f00 CR3: 000000005d222000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 inet6_ioctl+0x103/0x2b0 net/ipv6/af_inet6.c:580
 sock_do_ioctl+0x115/0x280 net/socket.c:1190
 sock_ioctl+0x227/0x6b0 net/socket.c:1311
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fee5cd8d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fee5dcb6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fee5cfa5fa0 RCX: 00007fee5cd8d169
RDX: 0000200000000000 RSI: 0000000000008916 RDI: 0000000000000003
RBP: 00007fee5ce0e730 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fee5cfa5fa0 R15: 00007ffec180cef8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:addrconf_add_ifaddr+0x184/0x460 net/ipv6/addrconf.c:3157
Code: 8b b4 24 94 00 00 00 4c 89 ef e8 f7 ba 2c ff 4c 8d b0 c5 0c 00 00 48 89 c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 3c 02 00 00
RSP: 0018:ffffc90006997aa0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007512000
RDX: 0000000000000198 RSI: ffffffff89483132 RDI: ffff88804f030338
RBP: ffffc90006997bb0 R08: 0000000000000000 R09: fffffbfff210ca62
R10: ffffc90006997aa0 R11: 0000000000000000 R12: 1ffff92000d32f54
R13: ffff88804f030000 R14: 0000000000000cc5 R15: ffff8880352c9980
FS:  00007fee5dcb66c0(0000) GS:ffff8880d6bb3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fee5cd72f00 CR3: 000000005d222000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	8b b4 24 94 00 00 00 	mov    0x94(%rsp),%esi
   7:	4c 89 ef             	mov    %r13,%rdi
   a:	e8 f7 ba 2c ff       	call   0xff2cbb06
   f:	4c 8d b0 c5 0c 00 00 	lea    0xcc5(%rax),%r14
  16:	48 89 c3             	mov    %rax,%rbx
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	4c 89 f2             	mov    %r14,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	4c 89 f2             	mov    %r14,%rdx
  31:	83 e2 07             	and    $0x7,%edx
  34:	38 d0                	cmp    %dl,%al
  36:	7f 08                	jg     0x40
  38:	84 c0                	test   %al,%al
  3a:	0f 85 3c 02 00 00    	jne    0x27c