This is a regression test for madvise(2) system call. It tests
kernel for NULL ptr deref Oops fixed by:
commit ee53664bda169f519ce3c6a22d378f0b946c8178
Author: Kirill A. Shutemov <kirill.shute...@linux.intel.com>
Date: Fri Dec 20 15:10:03 2013 +0200
mm: Fix NULL pointer dereference in madvise(MADV_WILLNEED) support
Signed-off-by: Jan Stancek <jstan...@redhat.com>
---
runtest/syscalls | 1 +
testcases/kernel/syscalls/.gitignore | 1 +
testcases/kernel/syscalls/madvise/madvise05.c | 81 +++++++++++++++++++++++++
3 files changed, 83 insertions(+), 0 deletions(-)
create mode 100644 testcases/kernel/syscalls/madvise/madvise05.c
diff --git a/runtest/syscalls b/runtest/syscalls
index 5e6e0f4..142c350 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -715,6 +715,7 @@ madvise01 madvise01
madvise02 madvise02
madvise03 madvise03
madvise04 madvise04
+madvise05 madvise05
newuname01 newuname01
diff --git a/testcases/kernel/syscalls/.gitignore
b/testcases/kernel/syscalls/.gitignore
index fb2425e..fd52217 100644
--- a/testcases/kernel/syscalls/.gitignore
+++ b/testcases/kernel/syscalls/.gitignore
@@ -479,6 +479,7 @@
/madvise/madvise02
/madvise/madvise03
/madvise/madvise04
+/madvise/madvise05
/mallopt/mallopt01
/mbind/mbind01
/memcmp/memcmp01
diff --git a/testcases/kernel/syscalls/madvise/madvise05.c
b/testcases/kernel/syscalls/madvise/madvise05.c
new file mode 100644
index 0000000..043eb4d
--- /dev/null
+++ b/testcases/kernel/syscalls/madvise/madvise05.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) Linux Test Project, 2014
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+/*
+ * This is a regression test for madvise(2) system call. It tests kernel
+ * for NULL ptr deref Oops fixed by:
+ * commit ee53664bda169f519ce3c6a22d378f0b946c8178
+ * Author: Kirill A. Shutemov <kirill.shute...@linux.intel.com>
+ * Date: Fri Dec 20 15:10:03 2013 +0200
+ * mm: Fix NULL pointer dereference in madvise(MADV_WILLNEED) support
+ *
+ * On buggy kernel with CONFIG_DEBUG_LOCK_ALLOC=y this testcase should
+ * produce Oops and/or be killed. On fixed/good kernel this testcase
+ * runs to completion (retcode is 0)
+ */
+
+#include <sys/mman.h>
+#include <errno.h>
+
+#include "test.h"
+#include "usctest.h"
+#include "safe_macros.h"
+
+#define ALLOC_SIZE (32 * 1024 * 1024)
+
+static void setup(void);
+static void cleanup(void);
+
+char *TCID = "madvise05";
+int TST_TOTAL = 1;
+
+int main(int argc, char *argv[])
+{
+ int lc;
+ const char *msg = NULL;
+ void *p;
+
+ msg = parse_opts(argc, argv, NULL, NULL);
+ if (msg)
+ tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+ setup();
+
+ for (lc = 0; TEST_LOOPING(lc); lc++) {
+ p = SAFE_MMAP(cleanup, NULL, ALLOC_SIZE, PROT_READ,
+ MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, -1, 0);
+ TEST(mprotect(p, ALLOC_SIZE, PROT_NONE));
+ if (TEST_RETURN == -1)
+ tst_brkm(TBROK | TTERRNO, cleanup, "mprotect failed");
+ TEST(madvise(p, ALLOC_SIZE, MADV_WILLNEED));
+ if (TEST_RETURN == -1)
+ tst_brkm(TBROK | TTERRNO, cleanup, "madvise failed");
+ SAFE_MUNMAP(cleanup, p, ALLOC_SIZE);
+ }
+
+ tst_resm(TPASS, "issue has not been reproduced");
+
+ cleanup();
+ tst_exit();
+}
+
+static void setup(void)
+{
+ tst_sig(NOFORK, DEF_HANDLER, cleanup);
+ TEST_PAUSE;
+}
+
+static void cleanup(void)
+{
+ TEST_CLEANUP;
+}
--
1.7.1
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