svn commit: r258508 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Sun Nov 24 09:07:23 2013
New Revision: 258508
URL: http://svnweb.freebsd.org/changeset/base/258508

Log:
  Added a regression test.
  
  Sponsored by:	EMC / Isilon storage division

Added:
  user/pho/stress2/misc/procfs5.sh   (contents, props changed)

Added: user/pho/stress2/misc/procfs5.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/procfs5.sh	Sun Nov 24 09:07:23 2013	(r258508)
@@ -0,0 +1,84 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2013 EMC Corp.
+# 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 AUTHOR 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 AUTHOR 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.
+#
+# $FreeBSD$
+#
+
+# Issue involving signed overflow.
+# Test scenario based on panic seen in
+# http://people.freebsd.org/~pho/stress/log/kostik640.txt
+# Fixed in r258365, r258397.
+
+# Scanario by kib@
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+mount | grep -q "/proc " || mount -t procfs procfs /proc
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > procfs_lr.c
+cc -o procfs_lr -Wall -Wextra -O2 procfs_lr.c || exit 1
+rm -f procfs_lr.c
+
+/tmp/procfs_lr 2>/dev/null
+
+rm -f /tmp/procfs_lr
+
+exit 0
+EOF
+/* $Id: procfs_lr.c,v 1.1 2013/11/16 07:06:46 kostik Exp kostik $ */
+
+#include <sys/types.h>
+#include <sys/fcntl.h>
+#include <err.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+	static const char name[] = "/proc/curproc/map";
+	const off_t uio_offset = 0x6f51f3a1185bced9;
+#if defined(__LP64__)
+	const size_t uio_resid = 0x4c330b10965a61af;
+#else
+	const size_t uio_resid = 0x965a61af;
+#endif
+	char buf[1];
+	int error, fd;
+
+	fd = open(name, O_RDONLY);
+	if (fd == -1)
+		err(1, "open");
+	error = pread(fd, buf, uio_resid, uio_offset);
+	if (error == -1)
+		fprintf(stderr, "pread: %s\n", strerror(errno));
+	return (0);
+}