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([2804:1bc4:224:7800:585c:db3a:fcb:e21f]) by smtp.gmail.com with ESMTPSA id 71dfb90a1353d-586f791fa49sm20367234e0c.12.2026.05.27.05.09.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 May 2026 05:09:49 -0700 (PDT) Message-ID: Subject: Re: [PATCH] selftests: livepatch: set LC_ALL=C to fix locale-dependent test failure From: Marcos Paulo de Souza To: Qiang Ma , jpoimboe@kernel.org, jikos@kernel.org, mbenes@suse.cz, pmladek@suse.com, joe.lawrence@redhat.com, shuah@kernel.org Cc: live-patching@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Date: Wed, 27 May 2026 09:09:44 -0300 In-Reply-To: <20260527095929.1504032-1-maqianga@uniontech.com> References: <20260527095929.1504032-1-maqianga@uniontech.com> Autocrypt: addr=mpdesouza@suse.com; prefer-encrypt=mutual; keydata=mDMEZ/0YqhYJKwYBBAHaRw8BAQdA4JZz0FED+JD5eKlhkNyjDrp6lAGmgR3LPTduPYGPT Km0Kk1hcmNvcyBQYXVsbyBkZSBTb3V6YSA8bXBkZXNvdXphQHN1c2UuY29tPoiTBBMWCgA7FiEE2g gC66iLbhUsCBoBemssEuRpLLUFAmf9GKoCGwMFCwkIBwICIgIGFQoJCAsCBBYCAwECHgcCF4AACgk QemssEuRpLLWGxwD/S1I0bjp462FlKb81DikrOfWbeJ0FOJP44eRzmn20HmEBALBZIMrfIH2dJ5eM GO8seNG8sYiP6JfRjl7Hyqca6YsE Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.60.1 (by Flathub.org) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Wed, 2026-05-27 at 17:59 +0800, Qiang Ma wrote: > When executing the command > "make -C tools/testing/selftests TARGETS=3Dlivepatch run_tests", > the following error message was reported. >=20 > TEST: livepatch interaction with ftrace_enabled sysctl ... not ok > ... > livepatch: sysctlo > : setting key "kernel.ftrace_enabled": Device or resource busy > livepatch: sysctl: setting key "kernel.ftrace_enabled": =E8=AE=BE=E5=A4= =87=E6=88=96=E8=B5=84=E6=BA=90=E5=BF=99 > ... > ERROR: livepatch kselftest(s) failed > not ok 5 selftests: livepatch: test-ftrace.sh # exit=3D1 >=20 > To fix it, set LC_ALL=3DC. Would you mind adding more context here? Can you point exactly why is this failing inside test-ftrace.sh script? Have you double checked if you had any previous loaded livepatches why trying to disable/enable livepatching? I'll test in my environment, but I'm pretty sure that it used to work not so long ago. >=20 > Signed-off-by: Qiang Ma > --- > =C2=A0tools/testing/selftests/livepatch/functions.sh | 2 ++ > =C2=A01 file changed, 2 insertions(+) >=20 > diff --git a/tools/testing/selftests/livepatch/functions.sh > b/tools/testing/selftests/livepatch/functions.sh > index 8ec0cb64ad94..ecf27c1120f1 100644 > --- a/tools/testing/selftests/livepatch/functions.sh > +++ b/tools/testing/selftests/livepatch/functions.sh > @@ -4,6 +4,8 @@ > =C2=A0 > =C2=A0# Shell functions for the rest of the scripts. > =C2=A0 > +export LC_ALL=3DC > + > =C2=A0MAX_RETRIES=3D600 > =C2=A0RETRY_INTERVAL=3D".1" # seconds > =C2=A0SYSFS_KERNEL_DIR=3D"/sys/kernel"