{"id":2220078,"url":"http://patchwork.ozlabs.org/api/patches/2220078/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/8ef8640092004d143fe80e6fc32ea8d30a9080de.1775466330.git.sayalip@linux.ibm.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<8ef8640092004d143fe80e6fc32ea8d30a9080de.1775466330.git.sayalip@linux.ibm.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/8ef8640092004d143fe80e6fc32ea8d30a9080de.1775466330.git.sayalip@linux.ibm.com/","date":"2026-04-06T09:19:32","name":"[v4,13/15] selftests/mm: move hwpoison setup into run_test() and silence modprobe output for memory-failure category","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"6d10acebe958d6f958fe53ab03e7a0a20b511b59","submitter":{"id":92656,"url":"http://patchwork.ozlabs.org/api/people/92656/?format=json","name":"Sayali Patil","email":"sayalip@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/8ef8640092004d143fe80e6fc32ea8d30a9080de.1775466330.git.sayalip@linux.ibm.com/mbox/","series":[{"id":498833,"url":"http://patchwork.ozlabs.org/api/series/498833/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=498833","date":"2026-04-06T09:19:22","name":"selftests/mm: fix failures and robustness improvements","version":4,"mbox":"http://patchwork.ozlabs.org/series/498833/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2220078/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220078/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=VrdErJcX;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.ibm.com;\n dkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=VrdErJcX; dkim-atps=neutral;\n spf=pass (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com;\n envelope-from=sayalip@linux.ibm.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:date:from:in-reply-to:message-id\n\t:mime-version:references:subject:to; s=pp1; bh=JNtZN4fc3fipI4yf8\n\tpu4qS2Gj54ni0NC4icf3M6AOi8=; b=VrdErJcXzFnKrj1X2SdixJ8NqvqAI+FHU\n\tMQkHqTdrNwMcgPLap7BftiIhZjQyasphfdKdphjtEik4Pd1KDhJtYxV2e1vN0HbH\n\tFeTjzTsxLz2Z5hacl0yxeZ4o9IYeSGdt5okgPDRBSJTMTnofUMuNTR8C+bXy5a1m\n\txrmxTk/U7L2r1tenDRzX4OWcBfvjwK/PvghtQKZbDwV2olp9D2+XLcBPTpm8XnKC\n\tQH239u5lP/NqodtXTFngALMmVnqX7cD3EPGq0f8VW3c3HrEIbEtgSuw+oxHPnkeb\n\tUIEJkjs45YQPGXV9Cir0R+RWBz4gV4Xrn5fd/tpeuejyLJs4LKeBg==","From":"Sayali Patil ","To":"Andrew Morton , Shuah Khan ,\n linux-mm@kvack.org, linux-kernel@vger.kernel.org,\n linux-kselftest@vger.kernel.org,\n Ritesh Harjani ","Cc":"David Hildenbrand , Zi Yan ,\n Michal Hocko , Oscar Salvador ,\n Lorenzo Stoakes ,\n Dev Jain , Liam.Howlett@oracle.com,\n linuxppc-dev@lists.ozlabs.org, Miaohe Lin ,\n Venkat Rao Bagalkote ,\n Sayali Patil ","Subject":"[PATCH v4 13/15] selftests/mm: move hwpoison setup into run_test()\n and silence modprobe output for memory-failure category","Date":"Mon, 6 Apr 2026 14:49:32 +0530","Message-ID":"\n <8ef8640092004d143fe80e6fc32ea8d30a9080de.1775466330.git.sayalip@linux.ibm.com>","X-Mailer":"git-send-email 2.52.0","In-Reply-To":"","References":"","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","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\n p6SaJ1Q3vw9BSrU0PRFLFDRhkKrZ/n64kViRHF+jfc8/ldlHAFDpmwKctEzTiCpJeBsLr0ufUxl\n 1qJV9d7Y64QtR9Y2zkyzMI7BLwlJkx8cJmaxLvSpmKO63EHMJ85raAn35PX6sB5EdSfd20/FHqK\n TPIOUdE3UBJ2LYKMz7E+KBB+Ecw88HOmNDWAVuH7Rzg5rXEbe9SUFbUxcPtly4cYILEOh2LL4CU\n 368D+pch/KIY1GINjcomiIVEYJ9F6NS27gICBIa4NDWJKgivnU3z9ZpuGG9hTEUT/oF/ISK3qjK\n Nm3uNGPX+3onphblaXscmT2EyOqtJcU4bq9b2w3Yh8SkKaVk1TGDKq9D9VEbGJtgmgR4p/u4Np2\n cZlQp+oCmeMA+/EiaICc0YweZXTdYIl6KbglhwlohGCfmVqQnolsiUNH4N2W//UN0aaYjiLBJOB\n 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\n a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=w_JUWIshtjp1QPcyv1YA:9","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-06_02,2026-04-03_01,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n impostorscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0\n malwarescore=0 spamscore=0 phishscore=0 priorityscore=1501 bulkscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604060090","X-Spam-Status":"No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"run_vmtests.sh contains special handling to ensure the hwpoison_inject\nmodule is available for the memory-failure tests. This logic was\nimplemented outside of run_test(), making the setup category-specific\nbut managed globally.\n\nMove the hwpoison_inject handling into run_test() and restrict it\nto the memory-failure category so that:\n1. the module is checked and loaded only when memory-failure tests run,\n2. the test is skipped if the module or the debugfs interface\n(/sys/kernel/debug/hwpoison/) is not available.\n3. the module is unloaded after the test if it was loaded by the script.\n\nThis localizes category-specific setup and makes the test flow\nconsistent with other per-category preparations.\n\nWhile updating this logic, fix the module availability check.\nThe script previously used:\n\n\tmodprobe -R hwpoison_inject\n\nThe -R option prints the resolved module name to stdout, causing every\nrun to print:\n\n\thwpoison_inject\n\nin the test output, even when no action is required, introducing\nunnecessary noise.\n\nReplace this with:\n\n\tmodprobe -n hwpoison_inject\n\nwhich verifies that the module is loadable without producing output,\nkeeping the selftest logs clean and consistent.\n\nAlso, ensure that skipped tests do not override a previously recorded\nfailure. A skipped test currently sets exitcode to ksft_skip even if a\nprior test has failed, which can mask failures in the final exit status.\nUpdate the logic to only set exitcode to ksft_skip when no failure has\nbeen recorded.\n\nFixes: ff4ef2fbd101 (\"selftests/mm: add memory failure anonymous page test\")\nSigned-off-by: Sayali Patil \n---\n tools/testing/selftests/mm/run_vmtests.sh | 52 ++++++++++++++---------\n 1 file changed, 33 insertions(+), 19 deletions(-)","diff":"diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh\nindex afdcfd0d7cef..17c9bd910c47 100755\n--- a/tools/testing/selftests/mm/run_vmtests.sh\n+++ b/tools/testing/selftests/mm/run_vmtests.sh\n@@ -235,6 +235,7 @@ pretty_name() {\n run_test() {\n \tif test_selected ${CATEGORY}; then\n \t\tlocal skip=0\n+\t\tlocal LOADED_MOD=0\n \n \t\t# On memory constrainted systems some tests can fail to allocate hugepages.\n \t\t# perform some cleanup before the test for a higher success rate.\n@@ -250,6 +251,28 @@ run_test() {\n \t\t\tfi\n \t\tfi\n \n+\t\t# Ensure hwpoison_inject is available for memory-failure tests\n+\t\tif [ \"${CATEGORY}\" = \"memory-failure\" ]; then\n+\t\t\t# Try to load hwpoison_inject if not present.\n+\t\t\tHWPOISON_DIR=/sys/kernel/debug/hwpoison/\n+\t\t\tif [ ! -d \"$HWPOISON_DIR\" ]; then\n+\t\t\t\tif ! modprobe -n hwpoison_inject > /dev/null 2>&1; then\n+\t\t\t\t\techo \"Module hwpoison_inject not found, skipping...\" \\\n+\t\t\t\t\t\t| tap_prefix\n+\t\t\t\t\tskip=1\n+\t\t\t\telse\n+\t\t\t\t\tmodprobe hwpoison_inject > /dev/null 2>&1\n+\t\t\t\t\tLOADED_MOD=1\n+\t\t\t\t\tif [ ! -d \"$HWPOISON_DIR\" ]; then\n+\t\t\t\t\t\techo \"hwpoison debugfs interface not present\" \\\n+\t\t\t\t\t\t\t| tap_prefix\n+\t\t\t\t\t\tskip=1\n+\t\t\t\t\tfi\n+\t\t\t\tfi\n+\t\t\tfi\n+\n+\t\tfi\n+\n \t\tlocal test=$(pretty_name \"$*\")\n \t\tlocal title=\"running $*\"\n \t\tlocal sep=$(echo -n \"$title\" | tr \"[:graph:][:space:]\" -)\n@@ -261,6 +284,12 @@ run_test() {\n \t\telse\n \t\t\tlocal ret=$ksft_skip\n \t\tfi\n+\n+\t\t# Unload hwpoison_inject if we loaded it\n+\t\tif [ -n \"${LOADED_MOD}\" ]; then\n+\t\t\tmodprobe -r hwpoison_inject > /dev/null 2>&1\n+\t\tfi\n+\n \t\tcount_total=$(( count_total + 1 ))\n \t\tif [ $ret -eq 0 ]; then\n \t\t\tcount_pass=$(( count_pass + 1 ))\n@@ -270,7 +299,9 @@ run_test() {\n \t\t\tcount_skip=$(( count_skip + 1 ))\n \t\t\techo \"[SKIP]\" | tap_prefix\n \t\t\techo \"ok ${count_total} ${test} # SKIP\" | tap_output\n-\t\t\texitcode=$ksft_skip\n+\t\t\tif [ $exitcode -eq 0 ]; then\n+\t\t\t\texitcode=$ksft_skip\n+\t\t\tfi\n \t\telse\n \t\t\tcount_fail=$(( count_fail + 1 ))\n \t\t\techo \"[FAIL]\" | tap_prefix\n@@ -529,24 +560,7 @@ CATEGORY=\"page_frag\" run_test ./test_page_frag.sh nonaligned\n \n CATEGORY=\"rmap\" run_test ./rmap\n \n-# Try to load hwpoison_inject if not present.\n-HWPOISON_DIR=/sys/kernel/debug/hwpoison/\n-if [ ! -d \"$HWPOISON_DIR\" ]; then\n-\tif ! modprobe -q -R hwpoison_inject; then\n-\t\techo \"Module hwpoison_inject not found, skipping...\"\n-\telse\n-\t\tmodprobe hwpoison_inject > /dev/null 2>&1\n-\t\tLOADED_MOD=1\n-\tfi\n-fi\n-\n-if [ -d \"$HWPOISON_DIR\" ]; then\n-\tCATEGORY=\"memory-failure\" run_test ./memory-failure\n-fi\n-\n-if [ -n \"${LOADED_MOD}\" ]; then\n-\tmodprobe -r hwpoison_inject > /dev/null 2>&1\n-fi\n+CATEGORY=\"memory-failure\" run_test ./memory-failure\n \n if [ \"${HAVE_HUGEPAGES}\" = 1 ]; then\n \techo \"$orig_nr_hugepgs\" > /proc/sys/vm/nr_hugepages\n","prefixes":["v4","13/15"]}