loop0: detected capacity change from 0 to 32768
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000198: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000cc0-0x0000000000000cc7]
CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 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+0x23e/0x590 net/ipv6/addrconf.c:3157
Code: 03 00 00 8b b4 24 c4 00 00 00 48 8b 7c 24 18 e8 08 a4 25 ff 49 89 c5 48 8d 98 c5 0c 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38 <42> 0f b6 04 20 84 c0 0f 85 03 03 00 00 48 89 5c 24 28 0f b6 1b 31
RSP: 0018:ffffc9000d4ffa00 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: 0000000000100000
RDX: ffffc9000e18a000 RSI: 000000000000030b RDI: 000000000000030c
RBP: ffffc9000d4ffb50 R08: ffffffff89ea4b03 R09: 1ffffffff20bfc0e
R10: dffffc0000000000 R11: fffffbfff20bfc0f R12: dffffc0000000000
R13: 0000000000000000 R14: 0000200000000000 R15: 1ffff92001a9ff48
FS:  00007ff5605946c0(0000) GS:ffff88808c596000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000014 CR3: 000000004078a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inet6_ioctl+0x148/0x280 net/ipv6/af_inet6.c:580
 sock_do_ioctl+0x15a/0x490 net/socket.c:1190
 sock_ioctl+0x644/0x900 net/socket.c:1311
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff55f78d169
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:00007ff560594038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff55f9a5fa0 RCX: 00007ff55f78d169
RDX: 0000200000000000 RSI: 0000000000008916 RDI: 000000000000000b
RBP: 00007ff55f80e730 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff55f9a5fa0 R15: 00007ffe77585b28
 </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+0x23e/0x590 net/ipv6/addrconf.c:3157
Code: 03 00 00 8b b4 24 c4 00 00 00 48 8b 7c 24 18 e8 08 a4 25 ff 49 89 c5 48 8d 98 c5 0c 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38 <42> 0f b6 04 20 84 c0 0f 85 03 03 00 00 48 89 5c 24 28 0f b6 1b 31
RSP: 0018:ffffc9000d4ffa00 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: 0000000000100000
RDX: ffffc9000e18a000 RSI: 000000000000030b RDI: 000000000000030c
RBP: ffffc9000d4ffb50 R08: ffffffff89ea4b03 R09: 1ffffffff20bfc0e
R10: dffffc0000000000 R11: fffffbfff20bfc0f R12: dffffc0000000000
R13: 0000000000000000 R14: 0000200000000000 R15: 1ffff92001a9ff48
FS:  00007ff5605946c0(0000) GS:ffff88808c596000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000014 CR3: 000000004078a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	03 00                	add    (%rax),%eax
   2:	00 8b b4 24 c4 00    	add    %cl,0xc424b4(%rbx)
   8:	00 00                	add    %al,(%rax)
   a:	48 8b 7c 24 18       	mov    0x18(%rsp),%rdi
   f:	e8 08 a4 25 ff       	call   0xff25a41c
  14:	49 89 c5             	mov    %rax,%r13
  17:	48 8d 98 c5 0c 00 00 	lea    0xcc5(%rax),%rbx
  1e:	48 89 d8             	mov    %rbx,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	48 89 44 24 38       	mov    %rax,0x38(%rsp)
* 2a:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 03 03 00 00    	jne    0x33a
  37:	48 89 5c 24 28       	mov    %rbx,0x28(%rsp)
  3c:	0f b6 1b             	movzbl (%rbx),%ebx
  3f:	31                   	.byte 0x31