------------[ cut here ]------------
WARNING: CPU: 1 PID: 24825 at lib/nlattr.c:117 nla_get_range_unsigned+0x157/0x530 lib/nlattr.c:117
Modules linked in:
CPU: 1 PID: 24825 Comm: syz-executor.4 Not tainted 5.9.0-rc2-next-20200828-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_get_range_unsigned+0x157/0x530 lib/nlattr.c:117
Code: 2a 03 00 00 44 0f b6 3b 48 c7 c6 40 e9 96 88 4c 89 ff e8 6c 93 c2 fd 41 80 ff 0b 77 11 42 ff 24 fd 60 e3 96 88 e8 99 96 c2 fd <0f> 0b eb 8f e8 90 96 c2 fd 0f 0b 5b 41 5c 41 5d 41 5e 41 5f 5d e9
RSP: 0018:ffffc9001879f190 EFLAGS: 00010212
RAX: 0000000000001e6e RBX: ffffffff8918a7a0 RCX: ffffc900119a1000
RDX: 0000000000040000 RSI: ffffffff83b1e5f7 RDI: 0000000000000003
RBP: ffffc9001879f1b8 R08: 0000000000000000 R09: ffff88808953a370
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9001879f278
R13: ffffffff8918a7a1 R14: 000000000000877c R15: ffffffff8918a7a0
FS:  00007f0539c46700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1951165db8 CR3: 000000021307f000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 netlink_policy_dump_write+0x2ae/0xea0 net/netlink/policy.c:270
 ctrl_dumppolicy+0x4a8/0x900 net/netlink/genetlink.c:1099
 genl_lock_dumpit+0x7f/0xb0 net/netlink/genetlink.c:553
 netlink_dump+0x4cd/0xf60 net/netlink/af_netlink.c:2246
 __netlink_dump_start+0x643/0x900 net/netlink/af_netlink.c:2354
 genl_family_rcv_msg_dumpit+0x2ac/0x310 net/netlink/genetlink.c:616
 genl_family_rcv_msg net/netlink/genetlink.c:711 [inline]
 genl_rcv_msg+0x75f/0x980 net/netlink/genetlink.c:731
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:742
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 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:00007f0539c45c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002ce00 RCX: 000000000045d5b9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 000000000118d020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cfec
R13: 00007ffd70ff207f R14: 00007f0539c469c0 R15: 000000000118cfec