WARNING: CPU: 0 PID: 12490 at net/ethtool/netlink.c:360 ethnl_default_doit+0x910/0xb20 net/ethtool/netlink.c:360 Modules linked in: CPU: 0 PID: 12490 Comm: syz-executor.4 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ethnl_default_doit+0x910/0xb20 net/ethtool/netlink.c:360 Code: ed fb ff ff 89 4c 24 1c e8 ad 40 2b fa 8b 4c 24 1c 44 89 e2 44 89 fe 48 c7 c7 20 8d 6e 8a c6 05 aa a7 6b 06 01 e8 d3 93 8d 01 <0f> 0b e9 c0 fb ff ff e8 84 40 2b fa be 04 00 00 00 4c 89 ff e8 a7 RSP: 0018:ffffc90002aef570 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff8a6ea500 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815ce355 RDI: fffff5200055dea0 RBP: ffffc90002aef678 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815c81be R11: 0000000000000000 R12: 0000000000002378 R13: ffff888023057080 R14: ffff888026aa3800 R15: 0000000000000001 FS: 00007fd4a3787700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000541198 CR3: 0000000013d92000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd4a3787188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffca1eb26df R14: 00007fd4a3787300 R15: 0000000000022000