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Fri, 27 Mar 2026 07:17:57 +0000 (GMT) From: Sayali Patil To: Andrew Morton , Shuah Khan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Ritesh Harjani Cc: David Hildenbrand , Zi Yan , Michal Hocko , Oscar Salvador , Lorenzo Stoakes , Dev Jain , Liam.Howlett@oracle.com, linuxppc-dev@lists.ozlabs.org, Sayali Patil , Miaohe Lin , Venkat Rao Bagalkote Subject: [PATCH v3 12/13] selftests/mm: move hwpoison setup into run_test() and silence modprobe output for memory-failure category Date: Fri, 27 Mar 2026 12:46:06 +0530 Message-ID: X-Mailer: git-send-email 2.52.0 In-Reply-To: References: 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 X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzI3MDA1MyBTYWx0ZWRfXxgzcIl45FDQR Ye9s6RoLv2Ss5WFiMd0DDouIwu1MEHTjMJtqvtszlboh/AVf8uDOZESH4FdvyofTsqBP93B8UiC Aozm1KVJWmLAkXv/HvznLto0dyZu2cbnBO/Gz9xI8q/DNHmG3gRe1HD/DU0ob5HooJaT3gRk3yS /fkpWULGl8mF8pIj2X23eqAgkMsFW1e7ammPeZfXphdzZUz4L6vcj9wqIbeBO9YictV9DMHkWlk L8/Nj5kp/0BPFIBLY8Tt48OoP6MF4MaJ61IlNlEFYrcK+aVXoa2wtDr2e62m+9QQJBGDdOFm+q8 Q8//ip/kTwfK0r5SrOkgNylNP7F1m9MxWOKtNc3Hk2ITyH6WyvsbJmKLW4wTjeOTWjWfVx4nlJw 72iB/PBTABEfidnukRDQ6YDF4e2X9lh7C6NaJyU8tP+VnFwPOQ2AUOCJDlYWnWKrpjzZYTkeuWm EFBkYCggokx+Wk0Lo2w== X-Authority-Analysis: v=2.4 cv=JK42csKb c=1 sm=1 tr=0 ts=69c62f2e cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=Ikd4Dj_1AAAA:8 a=i0EeH86SAAAA:8 a=VnNF1IyMAAAA:8 a=QWbft6qDQSdZu_5rdncA:9 X-Proofpoint-ORIG-GUID: 0c6pInW84zX2FrRSnmRd63okpmylBB9x X-Proofpoint-GUID: kIFBbHl4zhazTotkjVkZkSpT-f77vifU X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-26_04,2026-03-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 priorityscore=1501 malwarescore=0 adultscore=0 spamscore=0 suspectscore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603270053 Content-Type: text/plain; charset="utf-8" run_vmtests.sh contains special handling to ensure the hwpoison_inject module is available for the memory-failure tests. This logic was implemented outside of run_test(), making the setup category-specific but managed globally. Move the hwpoison_inject handling into run_test() and restrict it to the memory-failure category so that: 1. the module is checked and loaded only when memory-failure tests run, 2. the test is skipped if the module or the debugfs interface (/sys/kernel/debug/hwpoison/) is not available. 3. the module is unloaded after the test if it was loaded by the script. This localizes category-specific setup and makes the test flow consistent with other per-category preparations. While updating this logic, fix the module availability check. The script previously used: modprobe -R hwpoison_inject The -R option prints the resolved module name to stdout, causing every run to print: hwpoison_inject in the test output, even when no action is required, introducing unnecessary noise. Replace this with: modprobe -n hwpoison_inject which verifies that the module is loadable without producing output, keeping the selftest logs clean and consistent. Fixes: ff4ef2fbd101 ("selftests/mm: add memory failure anonymous page test") Acked-by: Zi Yan Acked-by: Miaohe Lin Tested-by: Venkat Rao Bagalkote Signed-off-by: Sayali Patil --- tools/testing/selftests/mm/run_vmtests.sh | 46 ++++++++++++++--------- 1 file changed, 28 insertions(+), 18 deletions(-) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/self= tests/mm/run_vmtests.sh index eecec0b6eb13..606558cc3b09 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -250,6 +250,27 @@ run_test() { fi fi =20 + # Ensure hwpoison_inject is available for memory-failure tests + if [ "${CATEGORY}" =3D "memory-failure" ]; then + # Try to load hwpoison_inject if not present. + HWPOISON_DIR=3D/sys/kernel/debug/hwpoison/ + if [ ! -d "$HWPOISON_DIR" ]; then + if ! modprobe -n hwpoison_inject > /dev/null 2>&1; then + echo "Module hwpoison_inject not found, skipping..." \ + | tap_prefix + skip=3D1 + else + modprobe hwpoison_inject > /dev/null 2>&1 + LOADED_MOD=3D1 + fi + fi + + if [ ! -d "$HWPOISON_DIR" ]; then + echo "hwpoison debugfs interface not present" | tap_prefix + skip=3D1 + fi + fi + local test=3D$(pretty_name "$*") local title=3D"running $*" local sep=3D$(echo -n "$title" | tr "[:graph:][:space:]" -) @@ -261,6 +282,12 @@ run_test() { else local ret=3D$ksft_skip fi + + # Unload hwpoison_inject if we loaded it + if [ -n "${LOADED_MOD}" ]; then + modprobe -r hwpoison_inject > /dev/null 2>&1 + fi + count_total=3D$(( count_total + 1 )) if [ $ret -eq 0 ]; then count_pass=3D$(( count_pass + 1 )) @@ -540,24 +567,7 @@ CATEGORY=3D"page_frag" run_test ./test_page_frag.sh no= naligned =20 CATEGORY=3D"rmap" run_test ./rmap =20 -# Try to load hwpoison_inject if not present. -HWPOISON_DIR=3D/sys/kernel/debug/hwpoison/ -if [ ! -d "$HWPOISON_DIR" ]; then - if ! modprobe -q -R hwpoison_inject; then - echo "Module hwpoison_inject not found, skipping..." - else - modprobe hwpoison_inject > /dev/null 2>&1 - LOADED_MOD=3D1 - fi -fi - -if [ -d "$HWPOISON_DIR" ]; then - CATEGORY=3D"memory-failure" run_test ./memory-failure -fi - -if [ -n "${LOADED_MOD}" ]; then - modprobe -r hwpoison_inject > /dev/null 2>&1 -fi +CATEGORY=3D"memory-failure" run_test ./memory-failure =20 if [ "${HAVE_HUGEPAGES}" =3D 1 ]; then echo "$orig_nr_hugepgs" > /proc/sys/vm/nr_hugepages --=20 2.52.0