1#!/bin/sh 2 3# 4# Copyright (c) 2015 EMC Corp. 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# Test of unmapped unaligned i/o over the vnode-backed md(4) volume. 30# "panic: vm_fault: fault on nofault entry, addr: fffffe07f302c000" seen. 31# https://people.freebsd.org/~pho/stress/log/md8.txt 32# Fixed in r292128. 33 34# Test scenario by kib@ 35 36[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 37[ -d /usr/src/sys ] || exit 0 38 39. ../default.cfg 40 41rm -f $diskimage 42dir=`dirname $diskimage` 43free=`df -k $dir | tail -1 | awk '{print $4}'` 44[ $((free / 1024)) -lt 50 ] && echo "Not enough disk space." && exit 45 46odir=`pwd` 47cd /tmp 48sed '1,/^EOF/d' < $odir/$0 > md8.c 49rm -f /tmp/md8 50mycc -o md8 -Wall -Wextra -g -O2 md8.c || exit 1 51rm -f md8.c 52 53cd $odir 54trap "rm -f $diskimage" EXIT INT 55dd if=/dev/zero of=$diskimage bs=1m count=50 status=none 56[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 57mdconfig -a -t vnode -f $diskimage -u $mdstart 58 59n=`sysctl -n hw.ncpu` 60n=$((n + 1)) 61(cd /usr/src; make -j $n buildkernel > /dev/null 2>&1) & 62sleep 1 63/tmp/md8 /dev/md$mdstart 64kill $! 65wait 66 67mdconfig -d -u $mdstart 68rm -rf /tmp/md8 69exit 0 70EOF 71#include <sys/param.h> 72 73#include <err.h> 74#include <fcntl.h> 75#include <stdio.h> 76#include <stdlib.h> 77#include <unistd.h> 78 79#define LOOPS 2000 80 81void 82test(char *path) 83{ 84 int fd; 85 char data[MAXPHYS + 512] __aligned(PAGE_SIZE); 86 87 if ((fd = open(path, O_RDONLY)) == -1) 88 err(1, "open(%s)", path); 89 if (read(fd, data + 512, MAXPHYS) != MAXPHYS) 90 err(1, "read"); 91 close(fd); 92 93 if ((fd = open(path, O_WRONLY)) == -1) 94 err(1, "open(%s)", path); 95 if (write(fd, data + 512, MAXPHYS) != MAXPHYS) 96 err(1, "write"); 97 close(fd); 98 99 if ((fd = open(path, O_RDONLY)) == -1) 100 err(1, "open(%s)", path); 101 if (read(fd, data + 512, MAXPHYS) != MAXPHYS) 102 err(1, "read"); 103 close(fd); 104} 105 106int 107main(int argc, char *argv[]) 108{ 109 int i; 110 char *path; 111 112 if (argc != 2) 113 errx(1, "Usage: %s <path>", argv[0]); 114 115 path = argv[1]; 116 117 for (i = 0; i < LOOPS; i++) 118 test(path); 119 120 return (0); 121} 122