{"id":2233409,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2233409/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/patch/20260506113655.10797-5-mmenashe@redhat.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":"<20260506113655.10797-5-mmenashe@redhat.com>","date":"2026-05-06T11:36:55","name":"[4/4] futex_cmp_requeue03: Add EFAULT and EACCES error coverage test","commit_ref":null,"pull_url":null,"state":"changes-requested","archived":false,"hash":"ccc48a0a0c2bff0dbb464476b51b24da55194a39","submitter":{"id":93123,"url":"http://patchwork.ozlabs.org/api/1.1/people/93123/?format=json","name":"Michael Menasherov","email":"mmenashe@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/ltp/patch/20260506113655.10797-5-mmenashe@redhat.com/mbox/","series":[{"id":502973,"url":"http://patchwork.ozlabs.org/api/1.1/series/502973/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/list/?series=502973","date":"2026-05-06T11:36:51","name":"futex: Add error coverage tests for wait, wake and cmp_requeue","version":1,"mbox":"http://patchwork.ozlabs.org/series/502973/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2233409/comments/","check":"fail","checks":"http://patchwork.ozlabs.org/api/patches/2233409/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=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=nrcfZ2I6;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=CkOiFT3y;\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":"---\n runtest/syscalls | 1 +\n testcases/kernel/syscalls/futex/.gitignore | 1 +\n .../syscalls/futex/futex_cmp_requeue03.c | 96 +++++++++++++++++++\n 3 files changed, 98 insertions(+)\n create mode 100644 testcases/kernel/syscalls/futex/futex_cmp_requeue03.c","diff":"diff --git a/runtest/syscalls b/runtest/syscalls\nindex 4d85a1d26..65baa44dc 100644\n--- a/runtest/syscalls\n+++ b/runtest/syscalls\n@@ -1908,3 +1908,4 @@ perf_event_open03 perf_event_open03\n futex_wait06 futex_wait06\n futex_wait07 futex_wait07\n futex_wake05 futex_wake05\n+futex_cmp_requeue03 futex_cmp_requeue03\ndiff --git a/testcases/kernel/syscalls/futex/.gitignore b/testcases/kernel/syscalls/futex/.gitignore\nindex c11546e07..231b6bd25 100644\n--- a/testcases/kernel/syscalls/futex/.gitignore\n+++ b/testcases/kernel/syscalls/futex/.gitignore\n@@ -16,3 +16,4 @@\n /futex_wait06\n /futex_wait07\n /futex_wake05\n+/futex_cmp_requeue03\ndiff --git a/testcases/kernel/syscalls/futex/futex_cmp_requeue03.c b/testcases/kernel/syscalls/futex/futex_cmp_requeue03.c\nnew file mode 100644\nindex 000000000..099d5e35c\n--- /dev/null\n+++ b/testcases/kernel/syscalls/futex/futex_cmp_requeue03.c\n@@ -0,0 +1,96 @@\n+// SPDX-License-Identifier: GPL-2.0-or-later\n+/*\n+ * Copyright (C) 2026 Red Hat, Inc.\n+ */\n+\n+/*\\\n+ * Check that futex(FUTEX_CMP_REQUEUE) returns EFAULT when uaddr or\n+ * uaddr2 points to unmapped memory, and EACCES (or EFAULT on older kernels)\n+ * when uaddr points to memory without read permission (PROT_NONE).\n+ *\n+ * The EACCES behavior for PROT_NONE was introduced in kernel 5.9.\n+ */\n+\n+#include \n+#include \n+\n+#include \"futextest.h\"\n+\n+static futex_t futex_var = FUTEX_INITIALIZER;\n+static futex_t *prot_none_addr;\n+\n+static struct futex_test_variants variants[] = {\n+#if (__NR_futex != __LTP__NR_INVALID_SYSCALL)\n+\t{ .fntype = FUTEX_FN_FUTEX, .desc = \"syscall with old kernel spec\"},\n+#endif\n+\n+#if (__NR_futex_time64 != __LTP__NR_INVALID_SYSCALL)\n+\t{ .fntype = FUTEX_FN_FUTEX64, .desc = \"syscall time64 with kernel spec\"},\n+#endif\n+};\n+\n+static struct testcase {\n+\tconst char *desc;\n+\tfutex_t *uaddr;\n+\tfutex_t *uaddr2;\n+\tint exp_errno;\n+} testcases[3];\n+\n+static void run(unsigned int n)\n+{\n+\tstruct futex_test_variants *tv = &variants[tst_variant];\n+\tstruct testcase *tc = &testcases[n];\n+\n+\tTST_EXP_FAIL(futex_cmp_requeue(tv->fntype, tc->uaddr, futex_var,\n+\t\ttc->uaddr2, 1, 1, 0), tc->exp_errno, \"%s\", tc->desc);\n+}\n+\n+static void setup(void)\n+{\n+\tstruct futex_test_variants *tv = &variants[tst_variant];\n+\tsize_t pagesize = getpagesize();\n+\tfutex_t *unmapped;\n+\n+\ttst_res(TINFO, \"Testing variant: %s\", tv->desc);\n+\tfutex_supported_by_kernel(tv->fntype);\n+\n+\tunmapped = SAFE_MMAP(NULL, pagesize, PROT_READ | PROT_WRITE,\n+\t\tMAP_PRIVATE | MAP_ANONYMOUS, -1, 0);\n+\tSAFE_MUNMAP(unmapped, pagesize);\n+\n+\tprot_none_addr = SAFE_MMAP(NULL, pagesize, PROT_NONE,\n+\t\tMAP_PRIVATE | MAP_ANONYMOUS, -1, 0);\n+\n+\ttestcases[0] = (struct testcase){\n+\t\t.desc = \"uaddr unmapped\",\n+\t\t.uaddr = unmapped,\n+\t\t.uaddr2 = &futex_var,\n+\t\t.exp_errno = EFAULT,\n+\t};\n+\ttestcases[1] = (struct testcase){\n+\t\t.desc = \"uaddr2 unmapped\",\n+\t\t.uaddr = &futex_var,\n+\t\t.uaddr2 = unmapped,\n+\t\t.exp_errno = EFAULT,\n+\t};\n+\ttestcases[2] = (struct testcase){\n+\t\t.desc = \"uaddr PROT_NONE\",\n+\t\t.uaddr = prot_none_addr,\n+\t\t.uaddr2 = &futex_var,\n+\t\t.exp_errno = tst_kvercmp(5, 9, 0) >= 0 ? EACCES : EFAULT,\n+\t};\n+}\n+\n+static void cleanup(void)\n+{\n+\tif (prot_none_addr)\n+\t\tSAFE_MUNMAP(prot_none_addr, getpagesize());\n+}\n+\n+static struct tst_test test = {\n+\t.setup = setup,\n+\t.cleanup = cleanup,\n+\t.test = run,\n+\t.tcnt = ARRAY_SIZE(testcases),\n+\t.test_variants = ARRAY_SIZE(variants),\n+};\n","prefixes":["4/4"]}