------------[ cut here ]------------
kernel BUG at lib/nlattr.c:411!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 PID: 1872 Comm: syz-executor.0 Not tainted 6.8.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:validate_nla lib/nlattr.c:411 [inline]
RIP: 0010:__nla_validate_parse+0x2fd4/0x2fe0 lib/nlattr.c:635
Code: e9 2a fb ff ff 48 8b 4c 24 38 80 e1 07 38 c1 0f 8c 33 f8 ff ff 48 8b 7c 24 38 e8 37 43 68 ff e9 24 f8 ff ff e8 9d c5 41 01 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90001f1ef40 EFLAGS: 00010202
RAX: 000000000000004e RBX: ffffffff83beb4c0 RCX: 000000000000000e
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888117c62118
RBP: ffffc90001f1f170 R08: 000000000000001f R09: ffffc90001f1f1e0
R10: 000000000000000d R11: ffffffff83beb440 R12: 1ffff11022f8c423
R13: ffff888117c6211a R14: 0000000000000008 R15: ffffc90001f1f280
FS:  00007fa7b2a676c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000640 CR3: 000000011888e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __nla_parse+0x28/0x40 lib/nlattr.c:732
 __nlmsg_parse include/net/netlink.h:756 [inline]
 nlmsg_parse include/net/netlink.h:777 [inline]
 rtm_del_nexthop+0x22c/0x580 net/ipv4/nexthop.c:3013
 rtnetlink_rcv_msg+0x6cf/0xd10 net/core/rtnetlink.c:6595
 netlink_rcv_skb+0x203/0x390 net/netlink/af_netlink.c:2556
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x5f2/0x820 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x747/0xb20 net/netlink/af_netlink.c:1902
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x1ec/0x230 net/socket.c:745
 ____sys_sendmsg+0x42c/0x6b0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x21d/0x2e0 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf9/0x210 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fa7b2ee5da9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa7b2a670c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa7b3013f80 RCX: 00007fa7b2ee5da9
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000003
RBP: 00007fa7b2f3247a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fa7b3013f80 R15: 00007ffdcf45fc38
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:validate_nla lib/nlattr.c:411 [inline]
RIP: 0010:__nla_validate_parse+0x2fd4/0x2fe0 lib/nlattr.c:635
Code: e9 2a fb ff ff 48 8b 4c 24 38 80 e1 07 38 c1 0f 8c 33 f8 ff ff 48 8b 7c 24 38 e8 37 43 68 ff e9 24 f8 ff ff e8 9d c5 41 01 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90001f1ef40 EFLAGS: 00010202
RAX: 000000000000004e RBX: ffffffff83beb4c0 RCX: 000000000000000e
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888117c62118
RBP: ffffc90001f1f170 R08: 000000000000001f R09: ffffc90001f1f1e0
R10: 000000000000000d R11: ffffffff83beb440 R12: 1ffff11022f8c423
R13: ffff888117c6211a R14: 0000000000000008 R15: ffffc90001f1f280
FS:  00007fa7b2a676c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000640 CR3: 000000011888e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400