Index: user/pho/stress2/misc/midi.sh
===================================================================
--- user/pho/stress2/misc/midi.sh	(nonexistent)
+++ user/pho/stress2/misc/midi.sh	(revision 351602)
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+# Test scenario by Mark Johnston <markj@freebsd.org>
+
+# 'panic: vm_fault_hold: fault on nofault entry, addr: 0x33522000' seen.
+# Fixed by 351262
+
+# $FreeBSD$
+
+cat > /tmp/midi.c <<EOF
+#include <err.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdatomic.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define NTHREADS	16
+
+static _Atomic(int) threads;
+static int fd;
+
+static void *
+t(void *data __unused)
+{
+	char buf[4096];
+	ssize_t n;
+	off_t off;
+
+	(void)atomic_fetch_add(&threads, 1);
+	while (atomic_load(&threads) != NTHREADS)
+		;
+
+	for (;;) {
+		arc4random_buf(&off, sizeof(off));
+		if ((n = pread(fd, buf, sizeof(buf), off)) >= 0)
+			write(STDOUT_FILENO, buf, n);
+	}
+
+	return (NULL);
+}
+
+int
+main(void)
+{
+	pthread_t tid[NTHREADS];
+	int error, i;
+
+	fd = open("/dev/midistat", O_RDONLY);
+	if (fd < 0)
+		err(1, "open");
+
+	for (i = 0; i < NTHREADS; i++)
+		if ((error = pthread_create(&tid[i], NULL, t, NULL)) != 0)
+			errc(1, error, "pthread_create");
+	for (i = 0; i < NTHREADS; i++)
+		if ((error = pthread_join(tid[i], NULL)) != 0)
+			errc(1, error, "pthread_join");
+
+	return (0);
+}
+EOF
+cc -o /tmp/midi -Wall -Wextra -O2 /tmp/midi.c -lpthread
+
+start=`date +%s`
+while [ $((`date +%s` - start)) -lt 120 ]; do
+	timeout 10 /tmp/midi | strings | head -20
+done
+
+rm -f /tmp/midi /tmp/midi.c /tmp/midi.core
+exit 0

Property changes on: user/pho/stress2/misc/midi.sh
___________________________________________________________________
Added: svn:executable
## -0,0 +1 ##
+*
\ No newline at end of property
Index: user/pho/stress2/misc/midi2.sh
===================================================================
--- user/pho/stress2/misc/midi2.sh	(nonexistent)
+++ user/pho/stress2/misc/midi2.sh	(revision 351602)
@@ -0,0 +1,116 @@
+#!/bin/sh
+
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2019 Dell EMC Isilon
+#
+# 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.
+#
+# $FreeBSD$
+#
+
+# Test threaded access to /dev/midistat.
+
+# "panic: vm_fault_hold: fault on nofault entry, addr: 0x8b352000" seen.
+# https://people.freebsd.org/~pho/stress/log/mark089.txt
+# Fixed by 351262
+
+. ../default.cfg
+[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/midi2.c
+mycc -o midi2 -Wall -Wextra -O0 -g midi2.c -lpthread || exit 1
+
+$dir/midi2
+s=$?
+cat /dev/midistat > /dev/null || s=1
+
+rm -rf midi2 midi2.c midi2.core
+exit $s
+
+EOF
+#include <sys/param.h>
+
+#include <machine/atomic.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+static volatile u_int share;
+static int fd;
+static char buf[0xbc59], buf2[0x40eddf];
+
+#define THREADS 4
+#define RUNTIME (1 * 60)
+#define SYNC 0
+
+static void *
+t1(void *data __unused)
+{
+
+	atomic_add_int(&share, 1);
+	while (share != THREADS)
+		;
+
+        pread(fd, buf, 0xbc59, 0x27dbb298LL);
+        pread(fd, buf, 0xbc59, 0x104e35c6d22eLL);
+        pread(fd, buf2, 0x40eddf, 0x405d1df88cbf41LL);
+
+	return (NULL);
+}
+
+int
+main(void)
+{
+	pthread_t tid[THREADS];
+	time_t start;
+	int i, rc;
+
+	if ((fd = open("/dev/midistat", O_RDONLY)) == -1)
+		err(1, "open(/dev/midistat)");
+	start = time(NULL);
+	while ((time(NULL) - start) < RUNTIME) {
+		share = 0;
+		for (i = 0; i < THREADS; i++) {
+			if ((rc = pthread_create(&tid[i], NULL, t1, NULL)) !=
+			    0)
+				errc(1, rc, "pthread_create");
+		}
+
+		for (i = 0; i < THREADS; i++) {
+			if ((rc = pthread_join(tid[i], NULL)) != 0)
+				errc(1, rc, "pthread_join");
+		}
+	}
+
+	return (0);
+}

Property changes on: user/pho/stress2/misc/midi2.sh
___________________________________________________________________
Added: svn:executable
## -0,0 +1 ##
+*
\ No newline at end of property