Oops: general protection fault, probably for non-canonical address 0xdffffc0000000198: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000cc0-0x0000000000000cc7]
CPU: 0 UID: 0 PID: 14661 Comm: syz.3.2856 Not tainted 6.15.0-rc1-syzkaller-00065-g3b07108ada81 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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:ffffc9000553f800 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: 0000000000080000
RDX: ffffc9000ee63000 RSI: 0000000000000389 RDI: 000000000000038a
RBP: ffffc9000553f950 R08: ffffffff905fe077 R09: 1ffffffff20bfc0e
R10: dffffc0000000000 R11: fffffbfff20bfc0f R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000080002240 R15: 1ffff92000aa7f08
FS:  0000000000000000(0000) GS:ffff888124f96000(0063) knlGS:00000000f5074b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080083018 CR3: 0000000074754000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 inet6_ioctl+0x148/0x280 net/ipv6/af_inet6.c:580
 sock_do_ioctl+0x15a/0x490 net/socket.c:1190
 compat_sock_ioctl_trans net/socket.c:3481 [inline]
 compat_sock_ioctl+0xc7c/0xf50 net/socket.c:3507
 __do_compat_sys_ioctl fs/ioctl.c:1004 [inline]
 __se_compat_sys_ioctl+0x50e/0xc30 fs/ioctl.c:947
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f94579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f507455c EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000008916
RDX: 0000000080002240 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </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:ffffc9000553f800 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: 0000000000080000
RDX: ffffc9000ee63000 RSI: 0000000000000389 RDI: 000000000000038a
RBP: ffffc9000553f950 R08: ffffffff905fe077 R09: 1ffffffff20bfc0e
R10: dffffc0000000000 R11: fffffbfff20bfc0f R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000080002240 R15: 1ffff92000aa7f08
FS:  0000000000000000(0000) GS:ffff888125096000(0063) knlGS:00000000f5074b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002dd0dffc CR3: 0000000074754000 CR4: 00000000003526f0
----------------
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