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Mon, 6 Apr 2026 09:20:27 +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, Miaohe Lin , Venkat Rao Bagalkote , Sayali Patil Subject: [PATCH v4 13/15] selftests/mm: move hwpoison setup into run_test() and silence modprobe output for memory-failure category Date: Mon, 6 Apr 2026 14:49:32 +0530 Message-ID: <8ef8640092004d143fe80e6fc32ea8d30a9080de.1775466330.git.sayalip@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDA2MDA5MCBTYWx0ZWRfX3oslSqiFf+LQ p6SaJ1Q3vw9BSrU0PRFLFDRhkKrZ/n64kViRHF+jfc8/ldlHAFDpmwKctEzTiCpJeBsLr0ufUxl 1qJV9d7Y64QtR9Y2zkyzMI7BLwlJkx8cJmaxLvSpmKO63EHMJ85raAn35PX6sB5EdSfd20/FHqK TPIOUdE3UBJ2LYKMz7E+KBB+Ecw88HOmNDWAVuH7Rzg5rXEbe9SUFbUxcPtly4cYILEOh2LL4CU 368D+pch/KIY1GINjcomiIVEYJ9F6NS27gICBIa4NDWJKgivnU3z9ZpuGG9hTEUT/oF/ISK3qjK Nm3uNGPX+3onphblaXscmT2EyOqtJcU4bq9b2w3Yh8SkKaVk1TGDKq9D9VEbGJtgmgR4p/u4Np2 cZlQp+oCmeMA+/EiaICc0YweZXTdYIl6KbglhwlohGCfmVqQnolsiUNH4N2W//UN0aaYjiLBJOB pRsTMCrHZPdqiNSGx0g== X-Proofpoint-GUID: QYU5me-PA449jhZ1jmNCEMx5dtqm78Fn X-Proofpoint-ORIG-GUID: l6L2mecNU6czOwdTVez3C-q7FeG_yKkj X-Authority-Analysis: v=2.4 cv=HJvO14tv c=1 sm=1 tr=0 ts=69d37ae4 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=w_JUWIshtjp1QPcyv1YA:9 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=2026-04-06_02,2026-04-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 malwarescore=0 spamscore=0 phishscore=0 priorityscore=1501 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604060090 X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: EA60040008 X-Stat-Signature: e7o98u3fe1obsj4fus31km6hye6q7qbb X-HE-Tag: 1775467244-759047 X-HE-Meta: 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 C+xudt9A hOOZVUscTaxSWIJ+Bu+e3MuLC49OVW+iqu2P1O+BnH28KbHRNlbYZ/1vPbdXmiz0hicHtJnCZfdvPXK4XLkW0aPM8aOKeg5AqXJVJAyX/zlBGXBt5pIsPN3txFcEyEteqVZ6SPKRMF+TC+sllHdIN1hl51CHaUDXFC313koid5ZX56poN0YEc5WIxDGsxA0Lfbr4t7YpuO8Pv53m4Xw6cyzVQnlB518Mg6B1plm4Qj9VmvzUTEXMYpMexCDe3/ZXrS3r+foMD0uvsoi+vQ6iBHpH1/H3GbZjLu8Cni76pWn9NkNJ47vStKgtqKrocW18Sa0fb Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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. Also, ensure that skipped tests do not override a previously recorded failure. A skipped test currently sets exitcode to ksft_skip even if a prior test has failed, which can mask failures in the final exit status. Update the logic to only set exitcode to ksft_skip when no failure has been recorded. Fixes: ff4ef2fbd101 ("selftests/mm: add memory failure anonymous page test") Signed-off-by: Sayali Patil --- tools/testing/selftests/mm/run_vmtests.sh | 52 ++++++++++++++--------- 1 file changed, 33 insertions(+), 19 deletions(-) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index afdcfd0d7cef..17c9bd910c47 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -235,6 +235,7 @@ pretty_name() { run_test() { if test_selected ${CATEGORY}; then local skip=0 + local LOADED_MOD=0 # On memory constrainted systems some tests can fail to allocate hugepages. # perform some cleanup before the test for a higher success rate. @@ -250,6 +251,28 @@ run_test() { fi fi + # Ensure hwpoison_inject is available for memory-failure tests + if [ "${CATEGORY}" = "memory-failure" ]; then + # Try to load hwpoison_inject if not present. + HWPOISON_DIR=/sys/kernel/debug/hwpoison/ + if [ ! -d "$HWPOISON_DIR" ]; then + if ! modprobe -n hwpoison_inject > /dev/null 2>&1; then + echo "Module hwpoison_inject not found, skipping..." \ + | tap_prefix + skip=1 + else + modprobe hwpoison_inject > /dev/null 2>&1 + LOADED_MOD=1 + if [ ! -d "$HWPOISON_DIR" ]; then + echo "hwpoison debugfs interface not present" \ + | tap_prefix + skip=1 + fi + fi + fi + + fi + local test=$(pretty_name "$*") local title="running $*" local sep=$(echo -n "$title" | tr "[:graph:][:space:]" -) @@ -261,6 +284,12 @@ run_test() { else local ret=$ksft_skip fi + + # Unload hwpoison_inject if we loaded it + if [ -n "${LOADED_MOD}" ]; then + modprobe -r hwpoison_inject > /dev/null 2>&1 + fi + count_total=$(( count_total + 1 )) if [ $ret -eq 0 ]; then count_pass=$(( count_pass + 1 )) @@ -270,7 +299,9 @@ run_test() { count_skip=$(( count_skip + 1 )) echo "[SKIP]" | tap_prefix echo "ok ${count_total} ${test} # SKIP" | tap_output - exitcode=$ksft_skip + if [ $exitcode -eq 0 ]; then + exitcode=$ksft_skip + fi else count_fail=$(( count_fail + 1 )) echo "[FAIL]" | tap_prefix @@ -529,24 +560,7 @@ CATEGORY="page_frag" run_test ./test_page_frag.sh nonaligned CATEGORY="rmap" run_test ./rmap -# Try to load hwpoison_inject if not present. -HWPOISON_DIR=/sys/kernel/debug/hwpoison/ -if [ ! -d "$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=1 - fi -fi - -if [ -d "$HWPOISON_DIR" ]; then - CATEGORY="memory-failure" run_test ./memory-failure -fi - -if [ -n "${LOADED_MOD}" ]; then - modprobe -r hwpoison_inject > /dev/null 2>&1 -fi +CATEGORY="memory-failure" run_test ./memory-failure if [ "${HAVE_HUGEPAGES}" = 1 ]; then echo "$orig_nr_hugepgs" > /proc/sys/vm/nr_hugepages -- 2.52.0