1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 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# "panic: vm_page_unwire: wire count underflow for page..." seen: 34# https://people.freebsd.org/~pho/stress/log/log0430.txt 35 36. ../default.cfg 37 38[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 39[ `swapinfo | wc -l` -eq 1 ] && exit 0 40 41dir=/tmp 42odir=`pwd` 43cd $dir 44sed '1,/^EOF/d' < $odir/$0 > $dir/mlockall6.c 45mycc -o mlockall6 -Wall -Wextra -O0 -g mlockall6.c || exit 1 46rm -f mlockall6.c 47cd $odir 48 49mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 50mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 51mdconfig -a -t swap -s 512m -u $mdstart || exit 1 52newfs $newfs_flags -n md$mdstart > /dev/null 53mount /dev/md$mdstart $mntpoint || exit 1 54 55daemon sh -c "(cd $odir/../testcases/swap; ./swap -t 20m -i 20 -l 100)" \ 56 > /dev/null 2>&1 57sleep 2 58 59(cd $mntpoint; /tmp/mlockall6 || echo FAIL) 60 61while pgrep -q swap; do 62 pkill -9 swap 63done 64 65n=0 66while mount | grep "on $mntpoint " | grep -q /dev/md; do 67 umount $mntpoint || sleep 1 68 n=$((n + 1)) 69 [ $n -gt 10 ] && { echo FAIL; exit 1; } 70done 71mdconfig -d -u $mdstart 72rm -rf /tmp/mlockall6 73exit 0 74 75EOF 76#include <sys/param.h> 77#include <sys/mman.h> 78#include <sys/stat.h> 79#include <sys/wait.h> 80 81#include <machine/atomic.h> 82 83#include <err.h> 84#include <errno.h> 85#include <fcntl.h> 86#include <stdio.h> 87#include <stdlib.h> 88#include <time.h> 89#include <unistd.h> 90 91#define LOOPS 2 92#define PARALLEL 8 93#define R0 0 94#define R1 1 95#define R2 2 96#define RUNTIME (10 * 60) 97 98static volatile u_int *share; 99static int ps; 100static char c[32 * 1024 * 1024]; 101 102static void 103touch(void) 104{ 105 int i; 106 107 for (i = 0; i < (int)sizeof(c); i += ps) 108 c[i] = 1; 109} 110 111static void 112test2(void) 113{ 114 pid_t pid; 115 volatile u_int *share2; 116 size_t len; 117 int i, status; 118 119 len = ps; 120 if ((share2 = mmap(NULL, len, PROT_READ | PROT_WRITE, 121 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 122 err(1, "mmap"); 123 touch(); 124 usleep(arc4random() % 100000); 125 alarm(600); 126 if ((pid = fork()) == 0) { 127 alarm(600); 128 while (share2[R1] == 0) /* Wait for parent */ 129 ; 130 atomic_add_int(&share2[R1], 1); 131 if (arc4random() % 100 < 50) 132 usleep(arc4random() % 1000); 133 if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) 134 err(1, "mlock"); 135 touch(); 136 atomic_add_int(&share2[R2], 1); 137 _exit(0); 138 } 139 atomic_add_int(&share2[R1], 1); 140 while (share2[R1] != 2) /* Wait for child */ 141 ; 142 143 for (i = 0; i < 100000 && share2[R2] == 0; i++) 144 touch(); /* while child is running */ 145 146 if (waitpid(pid, &status, 0) != pid) 147 err(1, "wait"); 148 149 if (status != 0) 150 fprintf(stderr, "Got signal %d\n", WTERMSIG(status)); 151 _exit(WTERMSIG(status)); 152} 153 154static void 155test(void) 156{ 157 pid_t pid; 158 int i, s, status; 159 160 while (share[R0] == 0) 161 ; 162 s = 0; 163 for (i = 0; i < LOOPS; i++) { 164 if ((pid = fork()) == 0) 165 test2(); 166 waitpid(pid, &status, 0); 167 s = (s == 0) ? status : s; 168 } 169 _exit(s); 170} 171 172int 173main(void) 174{ 175 pid_t pids[PARALLEL]; 176 size_t len; 177 time_t start; 178 int i, s, status; 179 180 ps = getpagesize(); 181 len = ps; 182 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 183 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 184 err(1, "mmap"); 185 start = time(NULL); 186 s = 0; 187 while (s == 0 && (time(NULL) - start) < RUNTIME) { 188 for (i = 0; i < PARALLEL; i++) { 189 if ((pids[i] = fork()) == 0) 190 test(); 191 } 192 atomic_add_int(&share[R0], 1); /* Start test() runs */ 193 for (i = 0; i < PARALLEL; i++) { 194 if (waitpid(pids[i], &status, 0) != pids[i]) 195 err(1, "wait"); 196 if (status != 0) { 197 fprintf(stderr, "FAIL: status = %d\n", 198 status); 199 } 200 s = (s == 0) ? status : s; 201 } 202 atomic_add_int(&share[R0], -1); 203 } 204 205 return (s); 206} 207