Date: Wed, 17 Jul 2013 06:29:42 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r253410 - user/pho/stress2/misc Message-ID: <201307170629.r6H6TgI7066576@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: pho Date: Wed Jul 17 06:29:41 2013 New Revision: 253410 URL: http://svnweb.freebsd.org/changeset/base/253410 Log: Added two regression test for r253189: "Never remove user-wired pages from an object when doing msync(MS_INVALIDATE)". Sponsored by: EMC / Isilon storage division Added: user/pho/stress2/misc/msync.sh (contents, props changed) user/pho/stress2/misc/wire_no_page.sh (contents, props changed) Added: user/pho/stress2/misc/msync.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/msync.sh Wed Jul 17 06:29:41 2013 (r253410) @@ -0,0 +1,201 @@ +#!/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. +# +# $FreeBSD$ +# + +# msync(2) / mlockall(2) test scenario. +# "panic: vm_fault_copy_wired: page missing" seen. +# http://people.freebsd.org/~pho/stress/log/msync.txt +# Fixed in r253189. + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/msync.c +cc -o msync -Wall -Wextra msync.c -lpthread || exit 1 +rm -f msync.c +cd $odir + +/tmp/msync + +killall msync > /dev/null 2>&1 +rm -f /tmp/msync +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> + +int syscallno = SYS_msync; +#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, num; + unsigned long arg1, arg2, arg3; + + usleep(1000); + num = syscallno; + for (i = 0; i < 500; i++) { + arg1 = makearg(); + arg2 = makearg(); +#if 0 + arg3 = makearg(); + arg3 = arg3 & ~MS_INVALIDATE; /* No problem seen */ +#else + arg3 = MS_INVALIDATE; /* panic */ +#endif + +#if 0 + fprintf(stderr, "%2d : syscall(%3d, 0x%lx, 0x%lx, 0x%lx)\n", + i, num, arg1, arg2, arg3); + usleep(50000); +#endif + alarm(1); + syscall(num, arg1, arg2, arg3); + num = 0; + } + + return (0); +} +void +wd(void) +{ + int i; + + if (mlockall(MCL_CURRENT | MCL_FUTURE) != 0) + err(1, "mlockall failed"); + + for (i = 0; i < 800; i++) { + if (fork() == 0) { + usleep(20000); + _exit(0); + } + wait(NULL); + usleep(100000); + } + + _exit(0); +} + +int +main(void) +{ + struct passwd *pw; + pthread_t cp[50]; + int i, j; + + if (fork() == 0) + wd(); + + 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); +} Added: user/pho/stress2/misc/wire_no_page.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/wire_no_page.sh Wed Jul 17 06:29:41 2013 (r253410) @@ -0,0 +1,105 @@ +#!/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. +# +# $FreeBSD$ +# + +# Test scenario by kib@ + +# "panic: vm_page_set_invalid: page 0xc3dfe8c0 is busy" seen. + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/wire_no_page.c +cc -o wire_no_page -Wall -Wextra wire_no_page.c -lpthread || exit 1 +rm -f wire_no_page.c +cd $odir + +cp /tmp/wire_no_page /tmp/wire_no_page2 +for i in `jot 100`; do + for j in `jot 50`; do + /tmp/wire_no_page /tmp/wire_no_page2 & + done + for j in `jot 50`; do + wait + done +done + +rm -f /tmp/wire_no_page /tmp/wire_no_page2 +exit + +EOF +/* $Id: wire_no_page.c,v 1.1 2013/05/17 07:50:30 kostik Exp kostik $ */ +#include <sys/types.h> +#include <sys/param.h> +#include <sys/fcntl.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <err.h> +#include <unistd.h> + +int +main(int argc, char *argv[]) +{ + struct stat st; + char *p1, *p2; + size_t len; + pid_t child; + int error, fd; + + if (argc < 2) + errx(1, "file name ?"); + fd = open(argv[1], O_RDWR); + if (fd == -1) + err(1, "open %s", argv[1]); + error = fstat(fd, &st); + if (error == -1) + err(1, "stat"); + len = round_page(st.st_size); + p1 = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if ((void *)p1 == MAP_FAILED) + err(1, "mmap"); + error = mlock(p1, len); + if (error == -1) + err(1, "mlock"); + p2 = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if ((void *)p2 == MAP_FAILED) + err(1, "mmap"); + error = msync(p2, len, MS_SYNC | MS_INVALIDATE); + if (error == -1) + err(1, "msync"); + child = fork(); + if (child == -1) + err(1, "fork"); + else if (child == 0) + _exit(0); + + return (0); +}
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201307170629.r6H6TgI7066576>