linux-kernel - Re: [PATCH bpf-next v2 4/4] selftests/bpf: convert test_skb_cgroup_id_user to test

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <ebbdf2e9-932f-4a7c-9c6e-3c8c80a3b524@bootlin.com>
Date: Mon, 12 Aug 2024 09:22:54 +0200
From: Alexis Lothoré <alexis.lothore@...tlin.com>
To: Martin KaFai Lau <martin.lau@...ux.dev>
Cc: Alexei Starovoitov <ast@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>,
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>,
 Yonghong Song <yonghong.song@...ux.dev>,
 John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>,
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>,
 Jiri Olsa <jolsa@...nel.org>, Mykola Lysenko <mykolal@...com>,
 Shuah Khan <shuah@...nel.org>, ebpf@...uxfoundation.org,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
 linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
 linux-kselftest@...r.kernel.org
Subject: Re: [PATCH bpf-next v2 4/4] selftests/bpf: convert
 test_skb_cgroup_id_user to test_progs

Hello Martin,

On 8/10/24 01:53, Martin KaFai Lau wrote:
> On 8/6/24 12:55 AM, Alexis Lothoré (eBPF Foundation) wrote:

[...]

>> +    SYS(fail, "ip link add dev %s type veth peer name %s", VETH_1, VETH_2);
>> +    SYS(fail, "ip link set %s up", VETH_1);
>> +    SYS(fail, "ip link set %s up", VETH_2);
> 
> Same. Do it under a new netns.
> 
>> +

[...]

>> +    if (setup_network(&t))
>> +        goto cleanup_progs;
>> +
>> +    cgroup_fd = cgroup_setup_and_join(CGROUP_PATH);
> 
> cgroup_fd is leaked.

ACK, I will prepare a new revision with all the leaked file descriptors you have
spotted fixed, and with tests performed in a dedicated netns.

> Thanks for working on this.

Thanks for the review !

Alexis

-- 
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com