------------[ cut here ]------------
kernel BUG at net/ipv6/ip6_fib.c:1224!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 59 Comm: kworker/u8:4 Not tainted 6.16.0-rc2-syzkaller-00161-g714db279942b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:fib6_add_rt2node+0x3386/0x33a0 net/ipv6/ip6_fib.c:1224
Code: ec a0 f7 90 0f 0b 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c c4 fa ff ff 4c 89 ff e8 a5 6b 04 f8 e9 b7 fa ff ff e8 bb ec a0 f7 90 <0f> 0b e8 b3 ec a0 f7 e9 98 fb ff ff 66 66 66 66 66 2e 0f 1f 84 00
RSP: 0018:ffffc9000210f260 EFLAGS: 00010293
RAX: ffffffff8a1f6f95 RBX: ffff888028528800 RCX: ffff88801c313c00
RDX: 0000000000000000 RSI: 00000000ffff0000 RDI: 0000000000000000
RBP: ffffc9000210f450 R08: ffffc9000210f510 R09: 1ffff1100ae7e205
R10: dffffc0000000000 R11: ffffed100ae7e206 R12: ffff888028528800
R13: ffff888028528800 R14: 0000000000000000 R15: 00000000ffff0000
FS:  0000000000000000(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c35096b CR3: 0000000052e04000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 fib6_add+0x8da/0x18a0 net/ipv6/ip6_fib.c:1535
 __ip6_ins_rt net/ipv6/route.c:1351 [inline]
 ip6_ins_rt+0xc8/0x120 net/ipv6/route.c:1361
 __ipv6_ifa_notify+0x63f/0xac0 net/ipv6/addrconf.c:6286
 ipv6_ifa_notify net/ipv6/addrconf.c:6325 [inline]
 addrconf_dad_completed+0x180/0xd60 net/ipv6/addrconf.c:4324
 addrconf_dad_work+0xc36/0x14b0 net/ipv6/addrconf.c:-1
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:fib6_add_rt2node+0x3386/0x33a0 net/ipv6/ip6_fib.c:1224
Code: ec a0 f7 90 0f 0b 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c c4 fa ff ff 4c 89 ff e8 a5 6b 04 f8 e9 b7 fa ff ff e8 bb ec a0 f7 90 <0f> 0b e8 b3 ec a0 f7 e9 98 fb ff ff 66 66 66 66 66 2e 0f 1f 84 00
RSP: 0018:ffffc9000210f260 EFLAGS: 00010293
RAX: ffffffff8a1f6f95 RBX: ffff888028528800 RCX: ffff88801c313c00
RDX: 0000000000000000 RSI: 00000000ffff0000 RDI: 0000000000000000
RBP: ffffc9000210f450 R08: ffffc9000210f510 R09: 1ffff1100ae7e205
R10: dffffc0000000000 R11: ffffed100ae7e206 R12: ffff888028528800
R13: ffff888028528800 R14: 0000000000000000 R15: 00000000ffff0000
FS:  0000000000000000(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c35096b CR3: 000000000df38000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400