kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 14988 Comm: syz-executor.1 Not tainted 5.4.61-syzkaller-00800-g4915c32a2f6b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nexthop_create_group net/ipv4/nexthop.c:1127 [inline]
RIP: 0010:nexthop_add net/ipv4/nexthop.c:1304 [inline]
RIP: 0010:rtm_new_nexthop+0x265e/0x6ba0 net/ipv4/nexthop.c:1503
Code: 00 80 3c 01 00 74 0a 48 8b 7c 24 18 e8 0b f3 01 fe 48 8b 44 24 18 48 89 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 e4 f2 01 fe 48 8b 44 24 18 48 89 03
RSP: 0018:ffff8881cbab70e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc90002e54000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881cbab74d0 R08: ffffffff836eaf5a R09: fffffbfff098c406
R10: fffffbfff098c406 R11: 0000000000000000 R12: 000000000000000a
R13: ffff8881c5e4ed50 R14: 0000000000000000 R15: 0000000000010000
FS:  00007f83c7810700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31821000 CR3: 000000018b7ff006 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 rtnetlink_rcv_msg+0x96e/0xc60 net/core/rtnetlink.c:5255
 netlink_rcv_skb+0x200/0x480 net/netlink/af_netlink.c:2478
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x8ad/0xa50 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x9de/0xd80 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x58a/0x8d0 net/socket.c:2298
 ___sys_sendmsg net/socket.c:2352 [inline]
 __sys_sendmsg+0x2cd/0x3b0 net/socket.c:2398
 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f83c780fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002cd40 RCX: 000000000045d5b9
RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003
RBP: 00007f83c780fca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007fff6b47290f R14: 00007f83c78109c0 R15: 000000000118cf4c
Modules linked in:
---[ end trace c820e40e2020224e ]---
RIP: 0010:nexthop_create_group net/ipv4/nexthop.c:1127 [inline]
RIP: 0010:nexthop_add net/ipv4/nexthop.c:1304 [inline]
RIP: 0010:rtm_new_nexthop+0x265e/0x6ba0 net/ipv4/nexthop.c:1503
Code: 00 80 3c 01 00 74 0a 48 8b 7c 24 18 e8 0b f3 01 fe 48 8b 44 24 18 48 89 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 e4 f2 01 fe 48 8b 44 24 18 48 89 03
RSP: 0018:ffff8881cbab70e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc90002e54000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881cbab74d0 R08: ffffffff836eaf5a R09: fffffbfff098c406
R10: fffffbfff098c406 R11: 0000000000000000 R12: 000000000000000a
R13: ffff8881c5e4ed50 R14: 0000000000000000 R15: 0000000000010000
FS:  00007f83c7810700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2429bd0000 CR3: 000000018b7ff001 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600