{"id":2229523,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2229523/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/patch/91e8e5a0259ba981e530d099eb053395d8991177.1777377311.git.sayalip@linux.ibm.com/","project":{"id":59,"url":"http://patchwork.ozlabs.org/api/1.1/projects/59/?format=json","name":"Linux Test Project development","link_name":"ltp","list_id":"ltp.lists.linux.it","list_email":"ltp@lists.linux.it","web_url":"","scm_url":"","webscm_url":""},"msgid":"<91e8e5a0259ba981e530d099eb053395d8991177.1777377311.git.sayalip@linux.ibm.com>","date":"2026-04-28T11:57:29","name":"hugetlb/hugeshmat05: use size_t for hugepage allocation sizes","commit_ref":null,"pull_url":null,"state":"needs-review-ack","archived":false,"hash":"606faf8e4126222409b5947a708b0adf4338fd52","submitter":{"id":92656,"url":"http://patchwork.ozlabs.org/api/1.1/people/92656/?format=json","name":"Sayali Patil","email":"sayalip@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/ltp/patch/91e8e5a0259ba981e530d099eb053395d8991177.1777377311.git.sayalip@linux.ibm.com/mbox/","series":[{"id":501834,"url":"http://patchwork.ozlabs.org/api/1.1/series/501834/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/list/?series=501834","date":"2026-04-28T11:57:29","name":"hugetlb/hugeshmat05: use size_t for hugepage allocation sizes","version":1,"mbox":"http://patchwork.ozlabs.org/series/501834/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2229523/comments/","check":"success","checks":"http://patchwork.ozlabs.org/api/patches/2229523/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=WrpYwETe;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; 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charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "},"content":"hugeshmat05 stores hugepage allocation sizes in int variables and\npasses them through shm_test(). This can overflow on systems with\n1GB hugepages, where computed test sizes may exceed INT_MAX.\n\nFor example, with 1GB hugepages and N=4, the test generates a 4GB\nallocation size. Storing this in int truncates the value, resulting\nin invalid sizes being passed to shmget() and subsequent failures\nsuch as EINVAL during shared memory attachment.\n\nUse size_t for size-related variables and update the corresponding\nprintf format specifier to correctly represent allocation sizes.\n\nFixes: 46640e176d (\"hugetlb: add new testcase hugeshmat05.c\")\nReported-by: Pavithra Prakash \nSigned-off-by: Sayali Patil \n---\n testcases/kernel/mem/hugetlb/hugeshmat/hugeshmat05.c | 6 +++---\n 1 file changed, 3 insertions(+), 3 deletions(-)","diff":"diff --git a/testcases/kernel/mem/hugetlb/hugeshmat/hugeshmat05.c b/testcases/kernel/mem/hugetlb/hugeshmat/hugeshmat05.c\nindex 3b2ae351c..eb8663f2c 100644\n--- a/testcases/kernel/mem/hugetlb/hugeshmat/hugeshmat05.c\n+++ b/testcases/kernel/mem/hugetlb/hugeshmat/hugeshmat05.c\n@@ -39,7 +39,7 @@ void setup(void)\n \thpage_size = SAFE_READ_MEMINFO(\"Hugepagesize:\") * 1024;\n }\n \n-void shm_test(int size)\n+void shm_test(size_t size)\n {\n \tint shmid;\n \tchar *shmaddr;\n@@ -56,7 +56,7 @@ void shm_test(int size)\n \t}\n \n \tshmaddr[0] = 1;\n-\ttst_res(TINFO, \"allocated %d huge bytes\", size);\n+\ttst_res(TINFO, \"allocated %zu huge bytes\", size);\n \n \tif (shmdt((const void *)shmaddr) != 0) {\n \t\tshmctl(shmid, IPC_RMID, NULL);\n@@ -70,7 +70,7 @@ static void test_hugeshmat(void)\n {\n \tunsigned int i;\n \n-\tconst int tst_sizes[] = {\n+\tconst size_t tst_sizes[] = {\n \t\tN * hpage_size - page_size,\n \t\tN * hpage_size - page_size - 1,\n \t\thpage_size,\n","prefixes":[]}