18a272653SPeter Holm#!/bin/sh 28a272653SPeter Holm 38a272653SPeter Holm# 48a272653SPeter Holm# Copyright (c) 2013 Peter Holm <pho@FreeBSD.org> 58a272653SPeter Holm# All rights reserved. 68a272653SPeter Holm# 78a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 88a272653SPeter Holm# modification, are permitted provided that the following conditions 98a272653SPeter Holm# are met: 108a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 118a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 128a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 138a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 148a272653SPeter Holm# documentation and/or other materials provided with the distribution. 158a272653SPeter Holm# 168a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 178a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 188a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 198a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 208a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 218a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 228a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 238a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 248a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 258a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 268a272653SPeter Holm# SUCH DAMAGE. 278a272653SPeter Holm# 288a272653SPeter Holm 298a272653SPeter Holm# msync(2) / mlockall(2) test scenario. 308a272653SPeter Holm# "panic: vm_fault_copy_wired: page missing" seen. 318a272653SPeter Holm# http://people.freebsd.org/~pho/stress/log/msync.txt 328a272653SPeter Holm# Fixed in r253189. 338a272653SPeter Holm 348a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 358a272653SPeter Holm 368a272653SPeter Holm. ../default.cfg 378a272653SPeter Holm 388a272653SPeter Holmdir=/tmp 398a272653SPeter Holmodir=`pwd` 408a272653SPeter Holmcd $dir 418a272653SPeter Holmsed '1,/^EOF/d' < $odir/$0 > $dir/msync.c 428a272653SPeter Holmmycc -o msync -Wall -Wextra msync.c -lpthread || exit 1 438a272653SPeter Holmrm -f msync.c 448a272653SPeter Holmcd $odir 458a272653SPeter Holm 468a272653SPeter Holm/tmp/msync & 478a272653SPeter Holmsleep 180 488a272653SPeter Holmwhile pkill -9 msync; do :; done 498a272653SPeter Holmwait 508a272653SPeter Holmrm -f /tmp/msync 518a272653SPeter Holmexit 528a272653SPeter Holm 538a272653SPeter HolmEOF 548a272653SPeter Holm#include <sys/types.h> 558a272653SPeter Holm#include <err.h> 568a272653SPeter Holm#include <errno.h> 578a272653SPeter Holm#include <fcntl.h> 588a272653SPeter Holm#include <pthread.h> 598a272653SPeter Holm#include <pwd.h> 608a272653SPeter Holm#include <signal.h> 618a272653SPeter Holm#include <sys/mman.h> 628a272653SPeter Holm#include <stdint.h> 638a272653SPeter Holm#include <stdio.h> 648a272653SPeter Holm#include <stdlib.h> 658a272653SPeter Holm#include <string.h> 668a272653SPeter Holm#include <sys/param.h> 678a272653SPeter Holm#include <sys/stat.h> 688a272653SPeter Holm#include <sys/syscall.h> 698a272653SPeter Holm#include <sys/wait.h> 708a272653SPeter Holm#include <unistd.h> 718a272653SPeter Holm 728a272653SPeter Holmint syscallno = SYS_msync; 738a272653SPeter Holm#define N (128 * 1024 / (int)sizeof(u_int32_t)) 748a272653SPeter Holmu_int32_t r[N]; 758a272653SPeter Holm 768a272653SPeter Holmstatic void 778a272653SPeter Holmhand(int i __unused) { /* handler */ 788a272653SPeter Holm _exit(1); 798a272653SPeter Holm} 808a272653SPeter Holm 818a272653SPeter Holmunsigned long 828a272653SPeter Holmmakearg(void) 838a272653SPeter Holm{ 848a272653SPeter Holm unsigned int i; 858a272653SPeter Holm unsigned long val; 868a272653SPeter Holm 878a272653SPeter Holm val = arc4random(); 888a272653SPeter Holm i = arc4random() % 100; 898a272653SPeter Holm if (i < 20) 908a272653SPeter Holm val = val & 0xff; 918a272653SPeter Holm if (i >= 20 && i < 40) 928a272653SPeter Holm val = val & 0xffff; 938a272653SPeter Holm if (i >= 40 && i < 60) 948a272653SPeter Holm val = (unsigned long)(r) | (val & 0xffff); 958a272653SPeter Holm#if defined(__LP64__) 968a272653SPeter Holm if (i >= 60) { 978a272653SPeter Holm val = (val << 32) | arc4random(); 988a272653SPeter Holm if (i > 80) 998a272653SPeter Holm val = val & 0x00007fffffffffffUL; 1008a272653SPeter Holm } 1018a272653SPeter Holm#endif 1028a272653SPeter Holm 1038a272653SPeter Holm return(val); 1048a272653SPeter Holm} 1058a272653SPeter Holm 1068a272653SPeter Holmvoid * 1078a272653SPeter Holmcalls(void *arg __unused) 1088a272653SPeter Holm{ 1098a272653SPeter Holm int i, num; 1108a272653SPeter Holm unsigned long arg1, arg2, arg3; 1118a272653SPeter Holm 1128a272653SPeter Holm usleep(1000); 1138a272653SPeter Holm num = syscallno; 1148a272653SPeter Holm for (i = 0; i < 500; i++) { 1158a272653SPeter Holm arg1 = makearg(); 1168a272653SPeter Holm arg2 = makearg(); 1178a272653SPeter Holm#if 0 1188a272653SPeter Holm arg3 = makearg(); 1198a272653SPeter Holm arg3 = arg3 & ~MS_INVALIDATE; /* No problem seen */ 1208a272653SPeter Holm#else 1218a272653SPeter Holm arg3 = MS_INVALIDATE; /* panic */ 1228a272653SPeter Holm#endif 1238a272653SPeter Holm 1248a272653SPeter Holm#if 0 1258a272653SPeter Holm fprintf(stderr, "%2d : syscall(%3d, 0x%lx, 0x%lx, 0x%lx)\n", 1268a272653SPeter Holm i, num, arg1, arg2, arg3); 1278a272653SPeter Holm usleep(50000); 1288a272653SPeter Holm#endif 1298a272653SPeter Holm alarm(1); 1308a272653SPeter Holm syscall(num, arg1, arg2, arg3); 1318a272653SPeter Holm num = 0; 1328a272653SPeter Holm } 1338a272653SPeter Holm 1348a272653SPeter Holm return (0); 1358a272653SPeter Holm} 1368a272653SPeter Holmvoid 1378a272653SPeter Holmwd(void) 1388a272653SPeter Holm{ 1398a272653SPeter Holm int i; 1408a272653SPeter Holm 1418a272653SPeter Holm if (mlockall(MCL_CURRENT | MCL_FUTURE) != 0) 1428a272653SPeter Holm err(1, "mlockall failed"); 1438a272653SPeter Holm 1448a272653SPeter Holm for (i = 0; i < 800; i++) { 1458a272653SPeter Holm if (fork() == 0) { 1468a272653SPeter Holm usleep(20000); 1478a272653SPeter Holm _exit(0); 1488a272653SPeter Holm } 1498a272653SPeter Holm wait(NULL); 1508a272653SPeter Holm usleep(100000); 1518a272653SPeter Holm } 1528a272653SPeter Holm 1538a272653SPeter Holm _exit(0); 1548a272653SPeter Holm} 1558a272653SPeter Holm 1568a272653SPeter Holmint 1578a272653SPeter Holmmain(void) 1588a272653SPeter Holm{ 1598a272653SPeter Holm struct passwd *pw; 1608a272653SPeter Holm pthread_t cp[50]; 1618a272653SPeter Holm int e, i, j; 1628a272653SPeter Holm 1638a272653SPeter Holm if (fork() == 0) 1648a272653SPeter Holm wd(); 1658a272653SPeter Holm 1668a272653SPeter Holm if ((pw = getpwnam("nobody")) == NULL) 1678a272653SPeter Holm err(1, "no such user: nobody"); 1688a272653SPeter Holm 1698a272653SPeter Holm if (setgroups(1, &pw->pw_gid) || 1708a272653SPeter Holm setegid(pw->pw_gid) || setgid(pw->pw_gid) || 1718a272653SPeter Holm seteuid(pw->pw_uid) || setuid(pw->pw_uid)) 1728a272653SPeter Holm err(1, "Can't drop privileges to \"nobody\""); 1738a272653SPeter Holm endpwent(); 1748a272653SPeter Holm 1758a272653SPeter Holm signal(SIGALRM, hand); 1768a272653SPeter Holm signal(SIGILL, hand); 1778a272653SPeter Holm signal(SIGFPE, hand); 1788a272653SPeter Holm signal(SIGSEGV, hand); 1798a272653SPeter Holm signal(SIGBUS, hand); 1808a272653SPeter Holm signal(SIGURG, hand); 1818a272653SPeter Holm signal(SIGSYS, hand); 1828a272653SPeter Holm signal(SIGTRAP, hand); 1838a272653SPeter Holm 1848a272653SPeter Holm alarm(180); 1858a272653SPeter Holm for (i = 0; i < 8000; i++) { 1868a272653SPeter Holm if (fork() == 0) { 1878a272653SPeter Holm for (j = 0; j < N; j++) 1888a272653SPeter Holm r[j] = arc4random(); 1898a272653SPeter Holm for (j = 0; j < 50; j++) 1908a272653SPeter Holm if ((e = pthread_create(&cp[j], NULL, calls, NULL)) != 0) 1918a272653SPeter Holm errc(1, e, "pthread_create"); 1928a272653SPeter Holm 1938a272653SPeter Holm for (j = 0; j < 50; j++) 1948a272653SPeter Holm pthread_join(cp[j], NULL); 1958a272653SPeter Holm _exit(0); 1968a272653SPeter Holm } 1978a272653SPeter Holm wait(NULL); 1988a272653SPeter Holm } 1998a272653SPeter Holm 2008a272653SPeter Holm return (0); 2018a272653SPeter Holm} 202