From: "Alexis Lothoré" <alexis.lothore@bootlin.com>
To: "Ihor Solodrai" <ihor.solodrai@linux.dev>,
"Alexei Starovoitov" <ast@kernel.org>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Eduard Zingerman" <eddyz87@gmail.com>
Cc: "Amery Hung" <ameryhung@gmail.com>,
"Mykyta Yatsenko" <yatsenko@meta.com>,
"Alexis Lothoré" <alexis.lothore@bootlin.com>,
bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@meta.com
Subject: Re: [PATCH bpf-next v1 14/14] selftests/bpf: Check BPFTOOL env var in detect_bpftool_path()
Date: Fri, 13 Feb 2026 11:36:40 +0100 [thread overview]
Message-ID: <DGDRNT32OY1Z.19IC8XK7DWJ0Y@bootlin.com> (raw)
In-Reply-To: <20260212011356.3266753-15-ihor.solodrai@linux.dev>
Hi Ihor,
On Thu Feb 12, 2026 at 2:13 AM CET, Ihor Solodrai wrote:
> The bpftool_maps_access and bpftool_metadata tests may fail on BPF CI
> with "command not found", depending on a workflow.
> This happens because detect_bpftool_path() only checks two hardcoded
> relative paths:
> - ./tools/sbin/bpftool
> - ../tools/sbin/bpftool
>
> Add support for a BPFTOOL environment variable that allows specifying
> the exact path to the bpftool binary.
>
> Also replace strncpy() with snprintf() for proper null-termination.
>
> Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
LGTM, thanks for the improvement.
For the record, another issue that this path harcoding is aiming to
solve is that we definitely want a full bpftool binary (as those bpftool
helpers are used to find the binary under test), and not a _bootstrap_
version, which only exposes a few subcommands instead of the whole set.
So I'd say that it is not an issue yet, but it may be worth in the
future to enrich the checks in detect_bpftool_path to make sure that any
bpftool binary path provided by BPFTOOL env var is not pointing to a
bootstrap version.
Alexis
--
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
next prev parent reply other threads:[~2026-02-13 10:36 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 1:13 [PATCH bpf-next v1 00/14] selftests/bpf: Fixes for userspace ASAN Ihor Solodrai
2026-02-12 1:13 ` [PATCH bpf-next v1 01/14] selftests/bpf: Pass through build flags to bpftool and resolve_btfids Ihor Solodrai
2026-02-12 2:39 ` Alexei Starovoitov
2026-02-12 3:08 ` Ihor Solodrai
2026-02-13 0:08 ` Ihor Solodrai
2026-02-12 1:13 ` [PATCH bpf-next v1 02/14] resolve_btfids: Fix memory leaks reported by ASAN Ihor Solodrai
2026-02-12 11:28 ` Jiri Olsa
2026-02-12 1:13 ` [PATCH bpf-next v1 03/14] selftests/bpf: Add DENYLIST.asan Ihor Solodrai
2026-02-12 1:13 ` [PATCH bpf-next v1 04/14] selftests/bpf: Refactor bpf_get_ksyms() trace helper Ihor Solodrai
2026-02-12 11:29 ` Jiri Olsa
2026-02-17 20:42 ` Ihor Solodrai
2026-02-18 13:14 ` Jiri Olsa
2026-02-13 9:56 ` Alexis Lothoré
2026-02-12 1:13 ` [PATCH bpf-next v1 05/14] selftests/bpf: Fix memory leaks in tests Ihor Solodrai
2026-02-12 23:08 ` Eduard Zingerman
2026-02-12 1:13 ` [PATCH bpf-next v1 06/14] selftests/bpf: Fix cleanup in check_fd_array_cnt__fd_array_too_big() Ihor Solodrai
2026-02-12 23:17 ` Eduard Zingerman
2026-02-12 1:13 ` [PATCH bpf-next v1 07/14] veristat: Fix a memory leak for preset ENUMERATOR Ihor Solodrai
2026-02-12 13:37 ` Mykyta Yatsenko
2026-02-12 1:13 ` [PATCH bpf-next v1 08/14] selftests/bpf: Fix use-after-free in xdp_metadata test Ihor Solodrai
2026-02-12 13:40 ` Mykyta Yatsenko
2026-02-12 1:13 ` [PATCH bpf-next v1 09/14] selftests/bpf: Fix double thread join in uprobe_multi_test Ihor Solodrai
2026-02-12 11:29 ` Jiri Olsa
2026-02-12 14:49 ` Mykyta Yatsenko
2026-02-13 16:48 ` Jiri Olsa
2026-02-12 1:13 ` [PATCH bpf-next v1 10/14] selftests/bpf: Fix resource leaks caused by missing cleanups Ihor Solodrai
2026-02-13 0:45 ` Eduard Zingerman
2026-02-12 1:13 ` [PATCH bpf-next v1 11/14] selftests/bpf: Free bpf_object in test_sysctl Ihor Solodrai
2026-02-13 0:54 ` Eduard Zingerman
2026-02-12 1:13 ` [PATCH bpf-next v1 12/14] selftests/bpf: Fix array bounds warning in jit_disasm_helpers Ihor Solodrai
2026-02-13 1:02 ` Eduard Zingerman
2026-02-12 1:13 ` [PATCH bpf-next v1 13/14] selftests/bpf: Fix out-of-bounds array access bugs reported by ASAN Ihor Solodrai
2026-02-13 1:11 ` Eduard Zingerman
2026-02-17 23:27 ` Ihor Solodrai
2026-02-12 1:13 ` [PATCH bpf-next v1 14/14] selftests/bpf: Check BPFTOOL env var in detect_bpftool_path() Ihor Solodrai
2026-02-12 15:03 ` Mykyta Yatsenko
2026-02-13 10:36 ` Alexis Lothoré [this message]
2026-02-12 22:00 ` [PATCH bpf-next v1 00/14] selftests/bpf: Fixes for userspace ASAN Eduard Zingerman
2026-02-12 23:57 ` Ihor Solodrai
2026-02-13 0:23 ` Eduard Zingerman
2026-02-13 16:13 ` Ihor Solodrai
2026-02-13 18:06 ` Eduard Zingerman
2026-02-12 23:26 ` Eduard Zingerman
2026-02-13 17:56 ` Ihor Solodrai
2026-02-13 18:09 ` Eduard Zingerman
2026-02-13 18:29 ` Ihor Solodrai
2026-02-13 18:35 ` Eduard Zingerman
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