Warning: Permanently added '10.128.1.51' (ECDSA) to the list of known hosts.
executing program
[   47.272286][ T6812] netlink: 'syz-executor210': attribute type 2 has an invalid length.
[   47.285475][ T6812] device  entered promiscuous mode
[   47.290924][ T6812] 
[   47.293322][ T6812] =============================
[   47.299712][ T6812] WARNING: suspicious RCU usage
[   47.313670][ T6812] 5.8.0-rc7-syzkaller #0 Not tainted
[   47.319867][ T6812] -----------------------------
[   47.325295][ T6812] net/openvswitch/flow_table.c:940 suspicious rcu_dereference_check() usage!
[   47.335015][ T6812] 
[   47.335015][ T6812] other info that might help us debug this:
[   47.335015][ T6812] 
[   47.345832][ T6812] 
[   47.345832][ T6812] rcu_scheduler_active = 2, debug_locks = 1
[   47.353886][ T6812] 2 locks held by syz-executor210/6812:
[   47.360459][ T6812]  #0: ffffffff8a8319b0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40
[   47.369295][ T6812]  #1: ffffffff8aa786a8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_cmd_new+0x4db/0xea0
[   47.386862][ T6812] 
[   47.386862][ T6812] stack backtrace:
[   47.392750][ T6812] CPU: 0 PID: 6812 Comm: syz-executor210 Not tainted 5.8.0-rc7-syzkaller #0
[   47.401395][ T6812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.411417][ T6812] Call Trace:
[   47.414692][ T6812]  dump_stack+0x18f/0x20d
[   47.418992][ T6812]  ovs_flow_tbl_masks_cache_size+0xc3/0xe0
[   47.424764][ T6812]  ovs_dp_cmd_fill_info+0x4e4/0x880
[   47.429931][ T6812]  ? dev_set_promiscuity+0xcb/0x100
[   47.435095][ T6812]  ? trace_hardirqs_on+0x5f/0x220
[   47.440086][ T6812]  ? ovs_vport_cmd_fill_info+0x620/0x620
[   47.445692][ T6812]  ? dev_set_promiscuity+0xcb/0x100
[   47.450852][ T6812]  ? __local_bh_enable_ip+0x159/0x250
[   47.456191][ T6812]  ? hash_bucket+0x4de/0x5f0
[   47.460748][ T6812]  ? ovs_vport_add+0x28c/0x4c0
[   47.465497][ T6812]  ovs_dp_cmd_new+0x584/0xea0
[   47.470143][ T6812]  ? ovs_vport_cmd_new+0xc60/0xc60
[   47.475226][ T6812]  ? genl_family_rcv_msg_attrs_parse.isra.0+0x19a/0x250
[   47.482130][ T6812]  ? genl_family_rcv_msg_attrs_parse.isra.0+0x8d/0x250
[   47.488961][ T6812]  genl_rcv_msg+0x61d/0x980
[   47.493435][ T6812]  ? genl_family_rcv_msg_attrs_parse.isra.0+0x250/0x250
[   47.500340][ T6812]  ? lock_release+0x8d0/0x8d0
[   47.504984][ T6812]  netlink_rcv_skb+0x15a/0x430
[   47.509727][ T6812]  ? genl_family_rcv_msg_attrs_parse.isra.0+0x250/0x250
[   47.516742][ T6812]  ? netlink_ack+0xa10/0xa10
[   47.521302][ T6812]  genl_rcv+0x24/0x40
[   47.525249][ T6812]  netlink_unicast+0x533/0x7d0
[   47.529980][ T6812]  ? netlink_attachskb+0x810/0x810
[   47.535056][ T6812]  ? _copy_from_iter_full+0x247/0x890
[   47.540391][ T6812]  ? __phys_addr+0x9a/0x110
[   47.544858][ T6812]  ? __phys_addr_symbol+0x2c/0x70
[   47.549844][ T6812]  ? __check_object_size+0x171/0x3e4
[   47.555095][ T6812]  netlink_sendmsg+0x856/0xd90
[   47.559827][ T6812]  ? netlink_unicast+0x7d0/0x7d0
[   47.564731][ T6812]  ? netlink_unicast+0x7d0/0x7d0
[   47.569633][ T6812]  sock_sendmsg+0xcf/0x120
[   47.574017][ T6812]  ____sys_sendmsg+0x6e8/0x810
[   47.578746][ T6812]  ? kernel_sendmsg+0x50/0x50
[   47.583384][ T6812]  ? do_recvmmsg+0x6d0/0x6d0
[   47.587941][ T6812]  ? lock_acquire+0x1f1/0xad0
[   47.592584][ T6812]  ? do_huge_pmd_anonymous_page+0x120d/0x2230
[   47.598615][ T6812]  ? find_held_lock+0x2d/0x110
[   47.603348][ T6812]  ___sys_sendmsg+0xf3/0x170
[   47.607905][ T6812]  ? sendmsg_copy_msghdr+0x160/0x160
[   47.613154][ T6812]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   47.619103][ T6812]  ? do_huge_pmd_anonymous_page+0x8ef/0x2230
[   47.625056][ T6812]  ? handle_mm_fault+0xad9/0x43f0
[   47.630048][ T6812]  ? find_held_lock+0x2d/0x110
[   47.634784][ T6812]  ? __fget_light+0x215/0x280
[   47.639434][ T6812]  __sys_sendmsg+0xe5/0x1b0
[   47.643912][ T6812]  ? __sys_sendmsg_sock+0xb0/0xb0
[   47.648921][ T6812]  ? do_syscall_64+0x1c/0xe0
[   47.653476][ T6812]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   47.659425][ T6812]  do_syscall_64+0x60/0xe0
[   47.663807][ T6812]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.669664][ T6812] RIP: 0033:0x4402d9
[   47.673526][ T6812] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   47.693097][ T6812] RSP: 002b:00007ffd71bb22a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   47.701473][ T6812] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402d9
[   47.709409][ T6812] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
[   47.717346][ T6812] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000