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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Sebastian Andrzej Siewior , Lorenzo Bianconi , Andrii Nakryiko , Jussi Maki , Jay Vosburgh , Andy Gospodarek , Jonathan Corbet , Andrew Lunn , Nikolay Aleksandrov , =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= , Simon Horman , Felix Maurer , Viktor Malik , linux-kernel@vger.kernel.org, bpf@vger.kernel.org, Hangbin Liu Subject: [PATCH net-next] selftests: net: bpf_offload: print loaded programs on mismatch Date: Tue, 19 Aug 2025 07:33:48 +0000 Message-ID: <20250819073348.387972-1-liuhangbin@gmail.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The test sometimes fails due to an unexpected number of loaded programs. e.g FAIL: 2 BPF programs loaded, expected 1 File "/usr/libexec/kselftests/net/./bpf_offload.py", line 940, in progs =3D bpftool_prog_list(expected=3D1) File "/usr/libexec/kselftests/net/./bpf_offload.py", line 187, in bpfto= ol_prog_list fail(True, "%d BPF programs loaded, expected %d" % File "/usr/libexec/kselftests/net/./bpf_offload.py", line 89, in fail tb =3D "".join(traceback.extract_stack().format()) However, the logs do not show which programs were actually loaded, making it difficult to debug the failure. Add printing of the loaded programs when a mismatch is detected to help troubleshoot such errors. The list is printed on a new line to avoid breaki= ng the current log format. Signed-off-by: Hangbin Liu --- tools/testing/selftests/net/bpf_offload.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/bpf_offload.py b/tools/testing/sel= ftests/net/bpf_offload.py index b2c271b79240..c856d266c8f3 100755 --- a/tools/testing/selftests/net/bpf_offload.py +++ b/tools/testing/selftests/net/bpf_offload.py @@ -184,8 +184,8 @@ def bpftool_prog_list(expected=3DNone, ns=3D"", exclude= _orphaned=3DTrue): progs =3D [ p for p in progs if not p['orphaned'] ] if expected is not None: if len(progs) !=3D expected: - fail(True, "%d BPF programs loaded, expected %d" % - (len(progs), expected)) + fail(True, "%d BPF programs loaded, expected %d\nLoaded Progs:= \n%s" % + (len(progs), expected, pp.pformat(progs))) return progs =20 def bpftool_map_list(expected=3DNone, ns=3D""): --=20 2.50.1