svn commit: r283325 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Sat May 23 20:29:06 2015
New Revision: 283325
URL: https://svnweb.freebsd.org/changeset/base/283325

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

Added:
  user/pho/stress2/misc/pthread9.sh   (contents, props changed)

Added: user/pho/stress2/misc/pthread9.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/pthread9.sh	Sat May 23 20:29:06 2015	(r283325)
@@ -0,0 +1,185 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2015 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.
+#
+# $FreeBSD$
+#
+
+# Thread suspend deadlock seen:
+# https://people.freebsd.org/~pho/stress/log/pthread9.txt
+
+# Test scenario by Conrad Meyer.
+# Fixed by r283320.
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > pthread9.c
+mycc -o pthread9 -Wall -Wextra -O2 pthread9.c -lpthread || exit 1
+rm -f pthread9.c
+
+status=0
+if ping -c 2 `echo $nfs_export | sed 's/:.*//'` > /dev/null 2>&1; then
+	mount -t nfs -o nfsv3,tcp,nolockd,retrycnt=3,intr $nfs_export \
+	    $mntpoint || exit 1
+	sleep .5
+	(cd $mntpoint; /tmp/pthread9) &
+	sleep 200
+	if pgrep -q pthread9; then
+		echo FAIL
+		procstat -k `pgrep pthread9 | grep -v $!`
+		status=1
+	fi
+	umount -f $mntpoint
+	wait
+fi
+
+rm -f /tmp/pthread9
+exit $status
+EOF
+#include <sys/types.h>
+
+#include <machine/atomic.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#ifdef __FreeBSD__
+#include <pthread_np.h>
+#define	__NP__
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#define LOOPS 50
+#define RUNTIME 180
+
+volatile u_int go;
+int fd;
+char file[] = "pthread9.file";
+
+static void *
+t1(void *data __unused)
+{
+	int i;
+
+#ifdef __NP__
+	pthread_set_name_np(pthread_self(), __func__);
+#endif
+	while (go == 0)
+		pthread_yield();
+
+	atomic_add_int(&go, 1);
+	for (i = 0; i < 100; i++)
+		if (ftruncate(fd, 0) == -1)
+			err(1, "truncate");
+
+	return (NULL);
+}
+
+static void *
+t2(void *data __unused)
+{
+	int i;
+
+#ifdef __NP__
+	pthread_set_name_np(pthread_self(), __func__);
+#endif
+	while (go == 0)
+		pthread_yield();
+
+	atomic_add_int(&go, 1);
+	for (i = 0; i < 100; i++)
+		if (ftruncate(fd, 0) == -1)
+			err(1, "truncate");
+
+	return (NULL);
+}
+
+static void *
+t3(void *data __unused)
+{
+
+#ifdef __NP__
+	pthread_set_name_np(pthread_self(), __func__);
+#endif
+	while (go != 3)
+		pthread_yield();
+	abort();
+
+	return (NULL);
+}
+
+int
+test(void)
+{
+	pthread_t tid[3];
+	int i, rc;
+
+	go = 0;
+	if ((rc = pthread_create(&tid[0], NULL, t1, NULL)) == -1)
+		errc(1, rc, "pthread_create");
+	if ((rc = pthread_create(&tid[1], NULL, t2, NULL)) == -1)
+		errc(1, rc, "pthread_create");
+	if ((rc = pthread_create(&tid[2], NULL, t3, NULL)) == -1)
+		errc(1, rc, "pthread_create");
+	usleep(200);
+	atomic_add_int(&go, 1);
+
+	for (i = 0; i < 3; i++) {
+		if ((rc = pthread_join(tid[i], NULL)) == -1)
+			errc(1, rc, "pthread_join");
+	}
+
+	_exit(0);
+}
+
+int
+main(void)
+{
+	time_t start;
+
+	if ((fd = open(file, O_RDWR | O_CREAT, 0644)) == -1)
+		err(1, "open(%s)", file);
+
+	start = time(NULL);
+	while (time(NULL) - start < RUNTIME) {
+		if (fork() == 0)
+			test();
+		wait(NULL);
+	}
+	close(fd);
+	unlink(file);
+
+	return (0);
+}