RAX: ffffffffffffffda RBX: 00007fd8de8a4f80 RCX: 00007fd8de785189
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003
RBP: 00007fd8dd4f81d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff4ccb256f R14: 00007fd8dd4f8300 R15: 0000000000022000
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: 11748 Comm: syz-executor.1 Not tainted 5.4.210-syzkaller-00006-gc80a5b2e7f63 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:nexthop_create_group net/ipv4/nexthop.c:1134 [inline]
RIP: 0010:nexthop_add net/ipv4/nexthop.c:1319 [inline]
RIP: 0010:rtm_new_nexthop+0x23f8/0x6b30 net/ipv4/nexthop.c:1518
Code: 00 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 01 a8 dc fd 48 8b 44 24 10 4c 89 30 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 da a7 dc fd 48 8b 44 24 10 49 89 06
RSP: 0018:ffff8881ed7ff0c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc90002f5b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881ed7ff4d0 R08: ffffffff82416816 R09: fffffbfff0bac3b7
R10: fffffbfff0bac3b7 R11: 1ffffffff0bac3b6 R12: 0000000000010001
R13: 0000000000000010 R14: 0000000000000000 R15: 1ffff1103a4d3494
FS:  00007fd8dd4f8700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 00000001d0e22000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rtnetlink_rcv_msg+0x988/0xc90 net/core/rtnetlink.c:5262
 netlink_rcv_skb+0x1f0/0x470 net/netlink/af_netlink.c:2499
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x91b/0xb10 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x9f6/0xcc0 net/netlink/af_netlink.c:1933
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x5a6/0x8f0 net/socket.c:2287
 ___sys_sendmsg net/socket.c:2341 [inline]
 __sys_sendmsg+0x2b7/0x3a0 net/socket.c:2387
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fd8de785189
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd8dd4f8168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd8de8a4f80 RCX: 00007fd8de785189
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003
RBP: 00007fd8dd4f81d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff4ccb256f R14: 00007fd8dd4f8300 R15: 0000000000022000
Modules linked in:
---[ end trace ea8e04f6cf039a1c ]---
RIP: 0010:nexthop_create_group net/ipv4/nexthop.c:1134 [inline]
RIP: 0010:nexthop_add net/ipv4/nexthop.c:1319 [inline]
RIP: 0010:rtm_new_nexthop+0x23f8/0x6b30 net/ipv4/nexthop.c:1518
Code: 00 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 01 a8 dc fd 48 8b 44 24 10 4c 89 30 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 da a7 dc fd 48 8b 44 24 10 49 89 06
RSP: 0018:ffff8881ed7ff0c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc90002f5b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881ed7ff4d0 R08: ffffffff82416816 R09: fffffbfff0bac3b7
R10: fffffbfff0bac3b7 R11: 1ffffffff0bac3b6 R12: 0000000000010001
R13: 0000000000000010 R14: 0000000000000000 R15: 1ffff1103a4d3494
FS:  00007fd8dd4f8700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 00000001d0e22000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 80 3c 01 00 74    	add    %al,0x7400013c(%rax)
   6:	0a 48 8b             	or     -0x75(%rax),%cl
   9:	7c 24                	jl     0x2f
   b:	10 e8                	adc    %ch,%al
   d:	01 a8 dc fd 48 8b    	add    %ebp,-0x74b70224(%rax)
  13:	44 24 10             	rex.R and $0x10,%al
  16:	4c 89 30             	mov    %r14,(%rax)
  19:	4c 89 f0             	mov    %r14,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 f7             	mov    %r14,%rdi
  33:	e8 da a7 dc fd       	callq  0xfddca812
  38:	48 8b 44 24 10       	mov    0x10(%rsp),%rax
  3d:	49 89 06             	mov    %rax,(%r14)