netlink: 'syz-executor.0': attribute type 2 has an invalid length.
netlink: 194488 bytes leftover after parsing attributes in process `syz-executor.0'.
=============================
WARNING: suspicious RCU usage
5.18.0-syzkaller #0 Not tainted
-----------------------------
net/hsr/hsr_framereg.c:41 suspicious rcu_dereference_check() usage!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
3 locks held by syz-executor.0/4068:
 #0: ffffffff8c73b2f0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x10/0x30 net/netlink/genetlink.c:802
 #1: ffffffff8c73b3a8 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8c73b3a8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x315/0x4a0 net/netlink/genetlink.c:790
 #2: ffffffff8af78ae0 (rcu_read_lock){....}-{1:2}, at: hsr_get_node_list+0xc1/0x8f0 net/hsr/hsr_netlink.c:425

stack backtrace:
CPU: 1 PID: 4068 Comm: syz-executor.0 Not tainted 5.18.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
 hsr_node_get_first+0x76/0xa0 net/hsr/hsr_framereg.c:41
 hsr_get_next_node+0x1b3/0x330 net/hsr/hsr_framereg.c:608
 hsr_get_node_list+0x2c2/0x8f0 net/hsr/hsr_netlink.c:461
 genl_family_rcv_msg_doit+0x1e4/0x2f0 net/netlink/genetlink.c:731
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0x27a/0x4a0 net/netlink/genetlink.c:792
 netlink_rcv_skb+0x118/0x370 net/netlink/af_netlink.c:2502
 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x433/0x710 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x782/0xc30 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg+0xab/0xe0 net/socket.c:725
 ____sys_sendmsg+0x5c2/0x7a0 net/socket.c:2445
 ___sys_sendmsg+0xd3/0x150 net/socket.c:2499
 __sys_sendmsg+0xb9/0x150 net/socket.c:2528
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f809ba890e9
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:00007f809ccc8168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f809bb9bf60 RCX: 00007f809ba890e9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007f809bae308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd7bceafff R14: 00007f809ccc8300 R15: 0000000000022000
 </TASK>