linux-kernel - Re: [PATCH v2 bpf-next 4/5] selftests/bpf: Add tests for bpf_cgroup_read

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

Message-ID: <CAADnVQKKQ8G91EudWVpw5TZ6zg3DTaKx9nVBUj1EdLu=7K+ByQ@mail.gmail.com>
Date: Fri, 20 Jun 2025 11:11:15 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Song Liu <song@...nel.org>, "Jose E. Marchesi" <jemarch@....org>, 
	"Jose E. Marchesi" <jose.marchesi@...cle.com>
Cc: bpf <bpf@...r.kernel.org>, Linux-Fsdevel <linux-fsdevel@...r.kernel.org>, 
	LKML <linux-kernel@...r.kernel.org>, 
	LSM List <linux-security-module@...r.kernel.org>, Kernel Team <kernel-team@...a.com>, 
	Andrii Nakryiko <andrii@...nel.org>, Eduard <eddyz87@...il.com>, 
	Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Martin KaFai Lau <martin.lau@...ux.dev>, Alexander Viro <viro@...iv.linux.org.uk>, 
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, KP Singh <kpsingh@...nel.org>, 
	Matt Bobrowski <mattbobrowski@...gle.com>, Amir Goldstein <amir73il@...il.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Tejun Heo <tj@...nel.org>, 
	Daan De Meyer <daan.j.demeyer@...il.com>
Subject: Re: [PATCH v2 bpf-next 4/5] selftests/bpf: Add tests for bpf_cgroup_read_xattr

On Thu, Jun 19, 2025 at 3:02 PM Song Liu <song@...nel.org> wrote:
> +       bpf_dynptr_from_mem(xattr_value, sizeof(xattr_value), 0, &value_ptr);

https://github.com/kernel-patches/bpf/actions/runs/15767046528/job/44445539248

progs/cgroup_read_xattr.c:19:9: error: ‘bpf_dynptr_from_mem’ is static
but used in inline function ‘read_xattr’ which is not static [-Werror]
19 | bpf_dynptr_from_mem(value, sizeof(value), 0, &value_ptr);
| ^~~~~~~~~~~~~~~~~~~


Jose,

Could you please help us understand this gcc-bpf error ?
What does it mean?