Date: Thu, 18 Jul 2013 07:43:55 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r253448 - user/pho/stress2/misc Message-ID: <201307180743.r6I7ht8T027758@svn.freebsd.org>
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Author: pho Date: Thu Jul 18 07:43:55 2013 New Revision: 253448 URL: http://svnweb.freebsd.org/changeset/base/253448 Log: Added a new mlockall(2) regression test. Sponsored by: EMC / Isilon storage division Added: user/pho/stress2/misc/mlockall3.sh (contents, props changed) Added: user/pho/stress2/misc/mlockall3.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/mlockall3.sh Thu Jul 18 07:43:55 2013 (r253448) @@ -0,0 +1,165 @@ +#!/bin/sh + +# +# Copyright (c) 2013 Peter Holm <pho@FreeBSD.org> +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +# mlockall(2) test scenario. +# "panic: vm_page_unwire: page xxx's wire count is zero" seen. +# http://people.freebsd.org/~pho/stress/log/mlockall.txt + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/mlockall3.c +cc -o mlockall3 -Wall -Wextra mlockall3.c -lpthread || exit 1 +rm -f mlockall3.c +cd $odir + +/tmp/mlockall3 + +killall mlockall3 > /dev/null 2>&1 +rm -f /tmp/mlockall3 +exit + +EOF +#include <sys/types.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <pwd.h> +#include <signal.h> +#include <sys/mman.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/param.h> +#include <sys/stat.h> +#include <sys/syscall.h> +#include <sys/wait.h> +#include <unistd.h> + +#define N (128 * 1024 / (int)sizeof(u_int32_t)) +u_int32_t r[N]; + +static void +hand(int i __unused) { /* handler */ + _exit(1); +} + +unsigned long +makearg(void) +{ + unsigned int i; + unsigned long val; + + val = arc4random(); + i = arc4random() % 100; + if (i < 20) + val = val & 0xff; + if (i >= 20 && i < 40) + val = val & 0xffff; + if (i >= 40 && i < 60) + val = (unsigned long)(r) | (val & 0xffff); +#if defined(__LP64__) + if (i >= 60) { + val = (val << 32) | arc4random(); + if (i > 80) + val = val & 0x00007fffffffffffUL; + } +#endif + + return(val); +} + +void * +calls(void *arg __unused) +{ + int i; + unsigned long arg1, arg2, arg3; + + usleep(1000); + for (i = 0; i < 500; i++) { + arg1 = makearg(); + arg2 = makearg(); + arg3 = makearg(); + + alarm(1); + syscall(SYS_mlockall, arg1, arg2, arg3); + } + + return (0); +} + +int +main(void) +{ + struct passwd *pw; + pthread_t cp[50]; + int i, j; + + if ((pw = getpwnam("nobody")) == NULL) + err(1, "no such user: nobody"); + + if (setgroups(1, &pw->pw_gid) || + setegid(pw->pw_gid) || setgid(pw->pw_gid) || + seteuid(pw->pw_uid) || setuid(pw->pw_uid)) + err(1, "Can't drop privileges to \"nobody\""); + endpwent(); + + signal(SIGALRM, hand); + signal(SIGILL, hand); + signal(SIGFPE, hand); + signal(SIGSEGV, hand); + signal(SIGBUS, hand); + signal(SIGURG, hand); + signal(SIGSYS, hand); + signal(SIGTRAP, hand); + + alarm(180); + for (i = 0; i < 8000; i++) { + if (fork() == 0) { + arc4random_stir(); + for (j = 0; j < N; j++) + r[j] = arc4random(); + for (j = 0; j < 50; j++) + if (pthread_create(&cp[j], NULL, calls, NULL) != 0) + perror("pthread_create"); + + for (j = 0; j < 50; j++) + pthread_join(cp[j], NULL); + _exit(0); + } + wait(NULL); + } + + return (0); +}
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