8021q: adding VLAN 0 to HW filter on device team0 netlink: 'syzkaller211959': attribute type 3 has an invalid length. netlink: 'syzkaller211959': attribute type 3 has an invalid length. list_add double add: new=ffff8801d39f2890, prev=ffff8801b169f3a0, next=ffff8801d39f2890. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:31! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4482 Comm: syzkaller211959 Not tainted 4.16.0+ #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid+0xaa/0xb0 lib/list_debug.c:29 RSP: 0018:ffff8801b169f248 EFLAGS: 00010286 RAX: 0000000000000058 RBX: ffff8801d39f2890 RCX: 0000000000000000 RDX: 0000000000000058 RSI: ffffffff815fa5a1 RDI: ffffed00362d3e3f RBP: ffff8801b169f260 R08: ffff8801ad0946c0 R09: ffffed003b604f90 R10: ffffed003b604f90 R11: ffff8801db027c87 R12: ffff8801d39f2890 R13: ffff8801d39f2890 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000001069880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 00000001ad7be000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add include/linux/list.h:79 [inline] team_nl_cmd_options_set+0x9ff/0x12b0 drivers/net/team/team.c:2571 genl_family_rcv_msg+0x889/0x1120 net/netlink/genetlink.c:599 genl_rcv_msg+0xc6/0x170 net/netlink/genetlink.c:624 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x58b/0x740 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x9f0/0xfa0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:639 ___sys_sendmsg+0x805/0x940 net/socket.c:2117 __sys_sendmsg+0x115/0x270 net/socket.c:2155 SYSC_sendmsg net/socket.c:2164 [inline] SyS_sendmsg+0x29/0x30 net/socket.c:2162 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x447039 RSP: 002b:00007ffc1ab20408 EFLAGS: 00000213 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004a9218 RCX: 0000000000447039 RDX: 0000000024008040 RSI: 0000000020000300 RDI: 0000000000000003 RBP: 0000000020000a74 R08: 00000000004a90b0 R09: 0000000000000000 R10: 00000000004a9178 R11: 0000000000000213 R12: 0000000000404150 R13: 00000000004041e0 R14: 0000000000000000 R15: 0000000000000000 Code: 75 e8 eb a9 48 89 f7 48 89 75 e8 e8 61 f6 7a fe 48 8b 75 e8 eb bb 48 89 f2 48 89 d9 4c 89 e6 48 c7 c7 a0 c2 d8 87 e8 4a d0 27 fe <0f> 0b 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 RIP: __list_add_valid+0xaa/0xb0 lib/list_debug.c:29 RSP: ffff8801b169f248 ---[ end trace 2f467a250cb68ba4 ]---