stress2: Initial import

Discussed with:	 kib

1 files changed, 250 insertions, 0 deletions

diff --git a/tools/test/stress2/misc/nfs15lockd3.sh b/tools/test/stress2/misc/nfs15lockd3.sh
new file mode 100755
index 000000000000..fe43efa64a7c
--- /dev/null
+++ b/tools/test/stress2/misc/nfs15lockd3.sh
@@ -0,0 +1,250 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2016 Dell EMC Isilon
+# 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.
+#
+
+# Demonstrate "wrong handling for suspend".
+# https://www.mail-archive.com/freebsd-current@freebsd.org/msg166333.html
+
+# Variation of nfs15lockd.sh
+
+# Threads marked as stopped, but can not be killed.
+# Fixed by r302215.
+
+# Also seen and not fixed:
+# $ fstat -mf /mnt
+# USER     CMD          PID   FD MOUNT      INUM MODE         SZ|DV R/W
+# $ umount /mnt
+# umount: unmount of /mnt failed: Device busy
+# $
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+pgrep -q lockd || { echo "lockd not running."; exit 1; }
+
+. ../default.cfg
+
+[ -z "$nfs_export" ] && exit 0
+ping -c 2 `echo $nfs_export | sed 's/:.*//'` > /dev/null 2>&1 ||
+    exit 0
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > nfs15lockd3.c
+mycc -o nfs15lockd3 -Wall -Wextra -O2 -g nfs15lockd3.c -lpthread || exit 1
+rm -f nfs15lockd3.c
+cd $here
+
+mount | grep "on $mntpoint " | grep nfs > /dev/null && umount $mntpoint
+
+[ $# -ne 0 ] &&
+    # Problem only seen with lockd
+    { echo "Not using lockd"; debug="-o nolockd"; }
+mount -t nfs -o tcp -o retrycnt=3 -o soft -o rw $debug \
+    $nfs_export $mntpoint
+sleep 2
+
+s=0
+lockf -t 10 $mntpoint/$$.lock sleep 2 > /tmp/$$.log 2>&1
+if grep -q "No locks available" /tmp/$$.log; then
+	echo "Is lockd running on the remote host?"
+	rm /tmp/$$.log
+	s=1
+fi
+
+wd=$mntpoint/nfs15lockd3-`jot -rc 8 a z | tr -d '\n'`.dir
+rm -rf $wd
+mkdir $wd
+
+(cd $wd; /tmp/nfs15lockd3) &
+start=`date '+%s'`
+while [ $((`date '+%s'` - start)) -lt 600 ]; do
+	pgrep -q nfs15lockd || break
+	sleep 2
+done
+if pgrep -q nfs15lockd; then
+	s=2
+	echo "Thread suspension issue:"
+	ps -lx | grep -v grep | grep nfs15lockd | grep "T+" | \
+		    awk '{print $2}' | while read pid; do
+		ps -lp$pid
+		procstat -k $pid
+		kill -9 $pid
+	done
+	pkill nfs15lockd
+fi
+wait
+rm -rf $wd
+
+n=0
+while mount | grep "on $mntpoint " | grep -q nfs; do
+	umount $mntpoint && break
+	n=$((n + 1))
+	if [ $n -gt 60 ]; then
+		fstat -mf $mntpoint
+		s=3
+		break
+	fi
+	sleep 2
+done
+
+rm -f /tmp/nfs15lockd3 nfs15lockd3.core file.0?????
+exit $s
+EOF
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/wait.h>
+
+#include <machine/atomic.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define PARALLEL 4
+#define RUNTIME 300
+#define SYNC 0
+
+volatile u_int *share;
+
+static void *
+t1(void *data __unused)
+{
+	atomic_add_int(&share[SYNC], 1);
+	usleep(arc4random() % 8000);
+	raise(SIGABRT);
+
+	return (NULL);
+}
+
+static void *
+t2(void *data __unused)
+{
+	int fd, i, r;
+	char file[80];
+
+	for (i = 0; i < 10; i++) {
+		atomic_add_int(&share[SYNC], 1);
+		snprintf(file, sizeof(file), "file.%06d", i);
+		if ((fd = open(file, O_WRONLY | O_CREAT | O_APPEND,
+		    DEFFILEMODE)) == -1)
+			err(1, "open(%s)", file);
+		do {
+			r = lockf(fd, F_LOCK, 0);
+		} while (r == -1 && (errno == EDEADLK || errno == EINTR));
+		if (r == -1)
+			err(1, "lockf(%s, F_LOCK)", file);
+		write(fd, "x", 1);
+		usleep(arc4random() % 1000);
+		if (lseek(fd, 0, SEEK_SET) == -1)
+			err(1, "lseek");
+		if (lockf(fd, F_ULOCK, 0) == -1)
+			err(1, "lockf(%s, F_ULOCK)", file);
+		close(fd);
+	}
+
+	return (NULL);
+}
+
+int
+test(void)
+{
+	pthread_t tid[3];
+	int i, rc;
+
+	for (i = 0; i < 5; i++) {
+		if ((rc = pthread_create(&tid[0], NULL, t2, 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, t1, NULL)) == -1)
+			errc(1, rc, "pthread_create");
+
+		if ((rc = pthread_join(tid[0], NULL)) == -1)
+			errc(1, rc, "pthread_join");
+		if ((rc = pthread_join(tid[1], NULL)) == -1)
+			errc(1, rc, "pthread_join");
+		if ((rc = pthread_join(tid[2], NULL)) == -1)
+			errc(1, rc, "pthread_join");
+	}
+
+	_exit(0);
+}
+
+int
+main(void)
+{
+	pid_t pids[PARALLEL];
+	size_t len;
+	time_t start;
+        int i, n, status;
+
+	len = PAGE_SIZE;
+	if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
+	    MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
+		err(1, "mmap");
+
+	start = time(NULL);
+	n = 0;
+	while (time(NULL) - start < RUNTIME) {
+		n++;
+		for (i = 0; i < PARALLEL; i++) {
+			if ((pids[i] = fork()) == 0)
+				test();
+		}
+
+		for(;;) {
+			if (share[SYNC] > 0)
+				atomic_add_int(&share[SYNC], -1);
+			for (i = 0; i < PARALLEL; i++)
+				kill(pids[i], SIGSTOP);
+			usleep(1000);
+			for (i = 0; i < PARALLEL; i++)
+				kill(pids[i], SIGCONT);
+			usleep(100 + arc4random() % 400);
+			if (share[SYNC] == 0) { /* If all procs are done */
+				usleep(500);
+				if (share[SYNC] == 0)
+					break;
+			}
+		}
+
+		for (i = 0; i < PARALLEL; i++) {
+			if (waitpid(pids[i], &status, 0) != pids[i])
+				err(1, "waitpid");
+		}
+		if (n > 2)
+			break;
+	}
+
+	return (0);
+}