[PATCH bpf v2] selftests/bpf: fix memory leak of lsm_cgroup

[patchwork-bot+netdevbpf at kernel.org]

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Martin KaFai Lau <martin.lau at kernel.org>:

On Tue, 15 Nov 2022 11:29:40 +0800 you wrote:
> kmemleak reports this issue:
> 
> unreferenced object 0xffff88810b7835c0 (size 32):
>   comm "test_progs", pid 270, jiffies 4294969007 (age 1621.315s)
>   hex dump (first 32 bytes):
>     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
>     03 00 00 00 03 00 00 00 0f 00 00 00 00 00 00 00  ................
>   backtrace:
>     [<00000000376cdeab>] kmalloc_trace+0x27/0x110
>     [<000000003bcdb3b6>] selinux_sk_alloc_security+0x66/0x110
>     [<000000003959008f>] security_sk_alloc+0x47/0x80
>     [<00000000e7bc6668>] sk_prot_alloc+0xbd/0x1a0
>     [<0000000002d6343a>] sk_alloc+0x3b/0x940
>     [<000000009812a46d>] unix_create1+0x8f/0x3d0
>     [<000000005ed0976b>] unix_create+0xa1/0x150
>     [<0000000086a1d27f>] __sock_create+0x233/0x4a0
>     [<00000000cffe3a73>] __sys_socket_create.part.0+0xaa/0x110
>     [<0000000007c63f20>] __sys_socket+0x49/0xf0
>     [<00000000b08753c8>] __x64_sys_socket+0x42/0x50
>     [<00000000b56e26b3>] do_syscall_64+0x3b/0x90
>     [<000000009b4871b8>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
> 
> [...]

Here is the summary with links:
  - [bpf,v2] selftests/bpf: fix memory leak of lsm_cgroup
    https://git.kernel.org/bpf/bpf-next/c/c453e64cbc95

You are awesome, thank you!
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