I noticed this in /sys/kernel/debug/kmemleak while testing other
patches. This is on 5.8.0-rc1 but may be older.
unreferenced object 0xffff888158b40380 (size 32):
comm "netlabelctl", pid 2982, jiffies 4295212079 (age 3234.561s)
hex dump (first 32 bytes):
80 03 b4 58 81 88 ff ff 80 03 b4 58 81 88 ff ff ...X.......X....
90 03 b4 58 81 88 ff ff 90 03 b4 58 81 88 ff ff ...X.......X....
backtrace:
[<000000009fe161a4>] netlbl_mgmt_add_common+0x2df/0x9b0
[<00000000816cc1d9>] netlbl_mgmt_adddef+0x133/0x190
[<00000000f060e456>] genl_rcv_msg+0x2dd/0x490
[<000000001c733400>] netlink_rcv_skb+0xd0/0x200
[<00000000c42f6f58>] genl_rcv+0x24/0x40
[<000000005421c040>] netlink_unicast+0x2b4/0x3e0
[<00000000ab107bba>] netlink_sendmsg+0x3a6/0x660
[<00000000643024bd>] sock_sendmsg+0x96/0xa0
[<00000000ba78e5a6>] ____sys_sendmsg+0x404/0x440
[<000000006f3de0f5>] ___sys_sendmsg+0xd8/0x140
[<000000009b8c70ea>] __sys_sendmsg+0xa3/0x110
[<00000000e65194c3>] do_syscall_64+0x52/0xb0
[<00000000367aebc6>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
