1 files changed, 64 insertions, 0 deletions
diff --git a/tests/sys/kern/coredump_phnum_helper.c b/tests/sys/kern/coredump_phnum_helper.c
new file mode 100644
index 000000000000..d8430bb2a7fc
--- /dev/null
+++ b/tests/sys/kern/coredump_phnum_helper.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2016, Conrad Meyer
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/mman.h>
+
+#include <err.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/*
+ * This program is intended to create a bunch of segment mappings, then dump
+ * core.
+ */
+int
+main(int argc __unused, char **argv __unused)
+{
+	void *v;
+	size_t i, pages, page_size;
+
+	page_size = getpagesize();
+	pages = UINT16_MAX + 1000;
+	v = mmap(NULL, pages * page_size, PROT_READ | PROT_WRITE,
+	    MAP_ANON | MAP_PRIVATE, -1, 0);
+	if (v == NULL)
+		err(1, "mmap");
+	for (i = 0; i < pages; i += 2) {
+		/*
+		 * Alternate protections to interleave RW and R PT_LOAD
+		 * segments.
+		 */
+		if (mprotect((char *)v + i * page_size, page_size,
+		    PROT_READ) != 0)
+			err(1, "mprotect");
+	}
+
+	/* Dump core. */
+	abort();
+}