{"id":2222800,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2222800/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/patch/20260413180725.411367-1-somadas1@linux.ibm.com/","project":{"id":59,"url":"http://patchwork.ozlabs.org/api/1.2/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":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260413180725.411367-1-somadas1@linux.ibm.com>","list_archive_url":null,"date":"2026-04-13T18:07:25","name":"mq_unlink01: fix EEXIST failure when run in parallel","commit_ref":null,"pull_url":null,"state":"needs-review-ack","archived":false,"hash":"b45f769d18ea1844b1ca73b511a3813c47821d81","submitter":{"id":93035,"url":"http://patchwork.ozlabs.org/api/1.2/people/93035/?format=json","name":"Soma Das","email":"somadas1@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/ltp/patch/20260413180725.411367-1-somadas1@linux.ibm.com/mbox/","series":[{"id":499734,"url":"http://patchwork.ozlabs.org/api/1.2/series/499734/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/list/?series=499734","date":"2026-04-13T18:07:25","name":"mq_unlink01: fix EEXIST failure when run in parallel","version":1,"mbox":"http://patchwork.ozlabs.org/series/499734/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222800/comments/","check":"success","checks":"http://patchwork.ozlabs.org/api/patches/2222800/checks/","tags":{},"related":[],"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=M7vK50ir;\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":"When executed with -w N, all workers share the hardcoded\n\"/test_mqueue\" queue name. The second worker to reach\nSAFE_MQ_OPEN(O_CREAT|O_EXCL) finds the queue already exists\nand aborts with TBROK: EEXIST.\n\nFix by generating a per-process queue name using getpid(),\nmatching the approach used in mq_timedreceive01.\n\nSigned-off-by: Soma Das \n---\n testcases/kernel/syscalls/mq_unlink/mq_unlink01.c | 14 +++++++-------\n 1 file changed, 7 insertions(+), 7 deletions(-)","diff":"diff --git a/testcases/kernel/syscalls/mq_unlink/mq_unlink01.c b/testcases/kernel/syscalls/mq_unlink/mq_unlink01.c\nindex baca57948..1cfffb083 100644\n--- a/testcases/kernel/syscalls/mq_unlink/mq_unlink01.c\n+++ b/testcases/kernel/syscalls/mq_unlink/mq_unlink01.c\n@@ -14,10 +14,9 @@\n #include \"tst_test.h\"\n #include \"tst_safe_posix_ipc.h\"\n \n-#define QUEUE_NAME\t\"/test_mqueue\"\n-\n static uid_t euid;\n static struct passwd *pw;\n+static char queue_name[64];\n \n struct test_case {\n \tint as_nobody;\n@@ -28,13 +27,11 @@ struct test_case {\n \n static struct test_case tcase[] = {\n \t{\n-\t\t.qname = QUEUE_NAME,\n \t\t.ret = 0,\n \t\t.err = 0,\n \t},\n \t{\n \t\t.as_nobody = 1,\n-\t\t.qname = QUEUE_NAME,\n \t\t.ret = -1,\n \t\t.err = EACCES,\n \t},\n@@ -64,6 +61,9 @@ static struct test_case tcase[] = {\n \n void setup(void)\n {\n+\tsnprintf(queue_name, sizeof(queue_name), \"/test_mqueue_%d\", getpid());\n+\ttcase[0].qname = queue_name;\n+\ttcase[1].qname = queue_name;\n \teuid = geteuid();\n \tpw = SAFE_GETPWNAM(\"nobody\");\n }\n@@ -79,10 +79,10 @@ static void do_test(unsigned int i)\n \t * When test ended with SIGTERM etc, mq descriptor is left remains.\n \t * So we delete it first.\n \t */\n-\tmq_unlink(QUEUE_NAME);\n+\tmq_unlink(queue_name);\n \n \t/* prepare */\n-\tfd = SAFE_MQ_OPEN(QUEUE_NAME, O_CREAT | O_EXCL | O_RDWR, S_IRWXU, NULL);\n+\tfd = SAFE_MQ_OPEN(queue_name, O_CREAT | O_EXCL | O_RDWR, S_IRWXU, NULL);\n \n \tif (tc->as_nobody && seteuid(pw->pw_uid)) {\n \t\ttst_res(TFAIL | TERRNO, \"seteuid failed\");\n@@ -107,7 +107,7 @@ EXIT:\n \tif (fd > 0 && close(fd))\n \t\ttst_res(TWARN | TERRNO, \"close(fd) failed\");\n \n-\tmq_unlink(QUEUE_NAME);\n+\tmq_unlink(queue_name);\n }\n \n static struct tst_test test = {\n","prefixes":[]}