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kernel BUG at net/ipv6/ip6_fib.c:1217!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6448 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
RIP: 0010:fib6_add_rt2node+0x347d/0x34b0 net/ipv6/ip6_fib.c:1217
Code: ff ff 48 8b 4c 24 08 80 e1 07 80 c1 03 38 c1 0f 8c a0 f9 ff ff 48 8b 7c 24 08 e8 4e 88 e9 f7 e9 91 f9 ff ff e8 94 9e 80 f7 90 <0f> 0b 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 76 fa ff ff 4c 89 ff
RSP: 0018:ffffc90003047680 EFLAGS: 00010293
RAX: ffffffff8a43d7ac RBX: 0000000000000001 RCX: ffff88802dd75b80
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90003047870 R08: ffffc90003047930 R09: 0000000000000050
R10: 0000000000000000 R11: fffff52000608f28 R12: ffff88807e6a8418
R13: ffff88807e6a8400 R14: dffffc0000000000 R15: 0000000000000002
FS:  00007f9616c516c0(0000) GS:ffff8881256f8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007571e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 fib6_add+0x8e7/0x18c0 net/ipv6/ip6_fib.c:1532
 __ip6_ins_rt net/ipv6/route.c:1351 [inline]
 ip6_route_add+0xde/0x1b0 net/ipv6/route.c:3957
 ipv6_route_ioctl+0x3ac/0x4f0 net/ipv6/route.c:4582
 inet6_ioctl+0x246/0x2e0 net/ipv6/af_inet6.c:577
 sock_do_ioctl+0x101/0x320 net/socket.c:1254
 sock_ioctl+0x5c6/0x7f0 net/socket.c:1375
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9615d9aef9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9616c51028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9616005fa0 RCX: 00007f9615d9aef9
RDX: 0000200000000000 RSI: 000000000000890b RDI: 0000000000000007
RBP: 00007f9615e2fee0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9616006038 R14: 00007f9616005fa0 R15: 00007fffd909a828
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:fib6_add_rt2node+0x347d/0x34b0 net/ipv6/ip6_fib.c:1217
Code: ff ff 48 8b 4c 24 08 80 e1 07 80 c1 03 38 c1 0f 8c a0 f9 ff ff 48 8b 7c 24 08 e8 4e 88 e9 f7 e9 91 f9 ff ff e8 94 9e 80 f7 90 <0f> 0b 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 76 fa ff ff 4c 89 ff
RSP: 0018:ffffc90003047680 EFLAGS: 00010293
RAX: ffffffff8a43d7ac RBX: 0000000000000001 RCX: ffff88802dd75b80
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90003047870 R08: ffffc90003047930 R09: 0000000000000050
R10: 0000000000000000 R11: fffff52000608f28 R12: ffff88807e6a8418
R13: ffff88807e6a8400 R14: dffffc0000000000 R15: 0000000000000002
FS:  00007f9616c516c0(0000) GS:ffff8881256f8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007571e000 CR4: 00000000003526f0