Index: user/pho/stress2/misc/mknod.sh
===================================================================
--- user/pho/stress2/misc/mknod.sh	(nonexistent)
+++ user/pho/stress2/misc/mknod.sh	(revision 324919)
@@ -0,0 +1,165 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2017 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.
+#
+# $FreeBSD$
+#
+
+# mknod(2) regression test
+# "panic: ffs_write: type 0xca2b02d0 8 (0,3)" seen.
+# Reported by: Dmitry Vyukov <dvyukov@google.com>
+# Fixed by r324853
+
+. ../default.cfg
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/mknod.c
+mycc -o mknod -Wall -Wextra -O0 -g mknod.c || exit 1
+rm -f mknod.c
+cd $odir
+
+set -e
+mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
+[ -c /dev/md$mdstart ] &&  mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 2g -u $mdstart
+bsdlabel -w md$mdstart auto
+newfs $newfs_flags md${mdstart}$part > /dev/null
+mount /dev/md${mdstart}$part $mntpoint
+set +e
+
+cd $mntpoint
+$dir/mknod $mntpoint
+s=$?
+[ -f mknod.core -a $s -eq 0 ] &&
+    { ls -l mknod.core; mv mknod.core /tmp; s=1; }
+cd $odir
+
+for i in `jot 6`; do
+	mount | grep -q "on $mntpoint " || break
+	umount $mntpoint && break || sleep 10
+done
+[ $i -eq 6 ] && exit 1
+mdconfig -d -u $mdstart
+rm -rf $dir/mknod
+exit $s
+
+EOF
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <machine/atomic.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+static volatile u_int *share;
+static char *mp;
+
+#define PARALLEL 4
+#define RUNTIME (1 * 60)
+#define SYNC 0
+
+static void
+test(void)
+{
+	dev_t dev;
+	mode_t mode;
+	time_t start;
+	int fd, n, r;
+	char path[128];
+
+	atomic_add_int(&share[SYNC], 1);
+	while (share[SYNC] != PARALLEL)
+		;
+	n = 0;
+	snprintf(path, sizeof(path), "%s/node.%06d.%d", mp, getpid(), n);
+	start = time(NULL);
+	while ((time(NULL) - start) < RUNTIME) {
+		dev = makedev(arc4random(), arc4random());
+		mode = arc4random() % 0x10000;
+		r = mknod(path, mode, dev);
+		if (r == 0) {
+			if ((fd = open(path, O_RDWR)) != -1) {
+				write(fd, "x", 1);
+				close(fd);
+			}
+			unlink(path);
+			n++;
+			snprintf(path, sizeof(path), "%s/node.%06d.%d", mp,
+			    getpid(), n);
+		}
+	}
+
+	_exit(0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	pid_t pids[PARALLEL];
+	size_t len;
+	int e, i, status;
+
+	if (argc != 2)
+		return (1);
+	mp = argv[1];
+	e = 0;
+	len = PAGE_SIZE;
+	if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
+	    MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
+		err(1, "mmap");
+
+	share[SYNC] = 0;
+	for (i = 0; i < PARALLEL; i++) {
+		if ((pids[i] = fork()) == 0)
+			test();
+		if (pids[i] == -1)
+			err(1, "fork()");
+	}
+	for (i = 0; i < PARALLEL; i++) {
+		if (waitpid(pids[i], &status, 0) == -1)
+			err(1, "waitpid(%d)", pids[i]);
+		if (status != 0) {
+			if (WIFSIGNALED(status))
+				fprintf(stderr,
+				    "pid %d exit signal %d\n",
+				    pids[i], WTERMSIG(status));
+		}
+		e += status == 0 ? 0 : 1;
+	}
+
+	return (e);
+}

Property changes on: user/pho/stress2/misc/mknod.sh
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Added: svn:executable
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+*
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