1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2019 Dell EMC Isilon 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# "panic: Lock (rw) vm object not locked @ vm/vm_page.c:1013" seen: 31# https://people.freebsd.org/~pho/stress/log/mlockall6-2.txt 32 33. ../default.cfg 34 35[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 36[ `swapinfo | wc -l` -eq 1 ] && exit 0 37 38dir=/tmp 39odir=`pwd` 40cd $dir 41sed '1,/^EOF/d' < $odir/$0 > $dir/mlockall6.c 42mycc -o mlockall6 -Wall -Wextra -O0 -g mlockall6.c || exit 1 43rm -f mlockall6.c 44cd $odir 45 46mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 47mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 48mdconfig -a -t swap -s 512m -u $mdstart || exit 1 49bsdlabel -w md$mdstart auto 50newfs $newfs_flags -n md${mdstart}$part > /dev/null 51mount /dev/md${mdstart}$part $mntpoint || exit 1 52 53daemon sh -c "(cd $odir/../testcases/swap; ./swap -t 20m -i 20 -l 100)" \ 54 > /dev/null 2>&1 55sleep 2 56 57(cd $mntpoint; /tmp/mlockall6 || echo FAIL) 58 59while pgrep -q swap; do 60 pkill -9 swap 61done 62 63n=0 64while mount | grep "on $mntpoint " | grep -q /dev/md; do 65 umount $mntpoint || sleep 1 66 n=$((n + 1)) 67 [ $n -gt 10 ] && { echo FAIL; exit 1; } 68done 69mdconfig -d -u $mdstart 70rm -rf /tmp/mlockall6 71exit 0 72 73EOF 74#include <sys/param.h> 75#include <sys/mman.h> 76#include <sys/stat.h> 77#include <sys/wait.h> 78 79#include <machine/atomic.h> 80 81#include <err.h> 82#include <errno.h> 83#include <fcntl.h> 84#include <stdio.h> 85#include <stdlib.h> 86#include <time.h> 87#include <unistd.h> 88 89#define LOOPS 2 90#define PARALLEL 8 91#define R0 0 92#define R1 1 93#define R2 2 94#define RUNTIME (10 * 60) 95 96static volatile u_int *share; 97static int ps; 98static char c[32 * 1024 * 1024]; 99 100static void 101touch(void) 102{ 103 int i; 104 105 for (i = 0; i < (int)sizeof(c); i += ps) 106 c[i] = 1; 107} 108 109static void 110test2(void) 111{ 112 pid_t pid; 113 volatile u_int *share2; 114 size_t len; 115 int i, status; 116 117 len = ps; 118 if ((share2 = mmap(NULL, len, PROT_READ | PROT_WRITE, 119 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 120 err(1, "mmap"); 121 touch(); 122 usleep(arc4random() % 100000); 123 alarm(600); 124 if ((pid = fork()) == 0) { 125 alarm(600); 126 while (share2[R1] == 0) /* Wait for parent */ 127 ; 128 atomic_add_int(&share2[R1], 1); 129 if (arc4random() % 100 < 50) 130 usleep(arc4random() % 1000); 131 if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) 132 err(1, "mlock"); 133 touch(); 134 atomic_add_int(&share2[R2], 1); 135 _exit(0); 136 } 137 atomic_add_int(&share2[R1], 1); 138 while (share2[R1] != 2) /* Wait for child */ 139 ; 140 141 for (i = 0; i < 100000 && share2[R2] == 0; i++) 142 touch(); /* while child is running */ 143 144 if (waitpid(pid, &status, 0) == -1) 145 err(1, "wait"); 146 147 if (status != 0) 148 fprintf(stderr, "Got signal %d\n", WTERMSIG(status)); 149 _exit(WTERMSIG(status)); 150} 151 152static void 153test(void) 154{ 155 pid_t pid; 156 int i, s, status; 157 158 while (share[R0] == 0) 159 ; 160 s = 0; 161 for (i = 0; i < LOOPS; i++) { 162 if ((pid = fork()) == 0) 163 test2(); 164 waitpid(pid, &status, 0); 165 s = (s == 0) ? status : s; 166 } 167 _exit(s); 168} 169 170int 171main(void) 172{ 173 pid_t pid; 174 size_t len; 175 time_t start; 176 int i, s, status; 177 178 ps = getpagesize(); 179 len = ps; 180 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 181 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 182 err(1, "mmap"); 183 start = time(NULL); 184 s = 0; 185 while (s == 0 && (time(NULL) - start) < RUNTIME) { 186 for (i = 0; i < PARALLEL; i++) { 187 if ((pid = fork()) == 0) 188 test(); 189 } 190 atomic_add_int(&share[R0], 1); /* Start test() runs */ 191 for (i = 0; i < PARALLEL; i++) { 192 waitpid(pid, &status, 0); 193 if (status != 0) { 194 fprintf(stderr, "FAIL: status = %d\n", 195 status); 196 } 197 s = (s == 0) ? status : s; 198 } 199 atomic_add_int(&share[R0], -1); 200 } 201 202 return (s); 203} 204