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 49newfs $newfs_flags -n md$mdstart > /dev/null 50mount /dev/md$mdstart $mntpoint || exit 1 51 52daemon sh -c "(cd $odir/../testcases/swap; ./swap -t 20m -i 20 -l 100)" \ 53 > /dev/null 2>&1 54sleep 2 55 56(cd $mntpoint; /tmp/mlockall6 || echo FAIL) 57 58while pgrep -q swap; do 59 pkill -9 swap 60done 61 62n=0 63while mount | grep "on $mntpoint " | grep -q /dev/md; do 64 umount $mntpoint || sleep 1 65 n=$((n + 1)) 66 [ $n -gt 10 ] && { echo FAIL; exit 1; } 67done 68mdconfig -d -u $mdstart 69rm -rf /tmp/mlockall6 70exit 0 71 72EOF 73#include <sys/param.h> 74#include <sys/mman.h> 75#include <sys/stat.h> 76#include <sys/wait.h> 77 78#include <machine/atomic.h> 79 80#include <err.h> 81#include <errno.h> 82#include <fcntl.h> 83#include <stdio.h> 84#include <stdlib.h> 85#include <time.h> 86#include <unistd.h> 87 88#define LOOPS 2 89#define PARALLEL 8 90#define R0 0 91#define R1 1 92#define R2 2 93#define RUNTIME (10 * 60) 94 95static volatile u_int *share; 96static int ps; 97static char c[32 * 1024 * 1024]; 98 99static void 100touch(void) 101{ 102 int i; 103 104 for (i = 0; i < (int)sizeof(c); i += ps) 105 c[i] = 1; 106} 107 108static void 109test2(void) 110{ 111 pid_t pid; 112 volatile u_int *share2; 113 size_t len; 114 int i, status; 115 116 len = ps; 117 if ((share2 = mmap(NULL, len, PROT_READ | PROT_WRITE, 118 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 119 err(1, "mmap"); 120 touch(); 121 usleep(arc4random() % 100000); 122 alarm(600); 123 if ((pid = fork()) == 0) { 124 alarm(600); 125 while (share2[R1] == 0) /* Wait for parent */ 126 ; 127 atomic_add_int(&share2[R1], 1); 128 if (arc4random() % 100 < 50) 129 usleep(arc4random() % 1000); 130 if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) 131 err(1, "mlock"); 132 touch(); 133 atomic_add_int(&share2[R2], 1); 134 _exit(0); 135 } 136 atomic_add_int(&share2[R1], 1); 137 while (share2[R1] != 2) /* Wait for child */ 138 ; 139 140 for (i = 0; i < 100000 && share2[R2] == 0; i++) 141 touch(); /* while child is running */ 142 143 if (waitpid(pid, &status, 0) != pid) 144 err(1, "wait"); 145 146 if (status != 0) 147 fprintf(stderr, "Got signal %d\n", WTERMSIG(status)); 148 _exit(WTERMSIG(status)); 149} 150 151static void 152test(void) 153{ 154 pid_t pid; 155 int i, s, status; 156 157 while (share[R0] == 0) 158 ; 159 s = 0; 160 for (i = 0; i < LOOPS; i++) { 161 if ((pid = fork()) == 0) 162 test2(); 163 waitpid(pid, &status, 0); 164 s = (s == 0) ? status : s; 165 } 166 _exit(s); 167} 168 169int 170main(void) 171{ 172 pid_t pids[PARALLEL]; 173 size_t len; 174 time_t start; 175 int i, s, status; 176 177 ps = getpagesize(); 178 len = ps; 179 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 180 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 181 err(1, "mmap"); 182 start = time(NULL); 183 s = 0; 184 while (s == 0 && (time(NULL) - start) < RUNTIME) { 185 for (i = 0; i < PARALLEL; i++) { 186 if ((pids[i] = fork()) == 0) 187 test(); 188 } 189 atomic_add_int(&share[R0], 1); /* Start test() runs */ 190 for (i = 0; i < PARALLEL; i++) { 191 if (waitpid(pids[i], &status, 0) != pids[i]) 192 err(1, "wait"); 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