Date: Thu, 13 Jun 2019 07:13:22 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r349012 - user/pho/stress2/misc Message-ID: <201906130713.x5D7DMqA098842@repo.freebsd.org>
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Author: pho Date: Thu Jun 13 07:13:22 2019 New Revision: 349012 URL: https://svnweb.freebsd.org/changeset/base/349012 Log: Added a mmap(2) regression test. Sponsored by: Dell EMC Isilon Added: user/pho/stress2/misc/mmap34.sh (contents, props changed) Added: user/pho/stress2/misc/mmap34.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/mmap34.sh Thu Jun 13 07:13:22 2019 (r349012) @@ -0,0 +1,232 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2019 Dell EMC Isilon +# +# 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. +# +# $FreeBSD$ +# + +# "panic: caller failed to provide space -546873344 at address 0x20a00000" +# seen. +# https://people.freebsd.org/~pho/stress/log/indir_trunc.txt +# Fixed by r348968 + +# Test scenario inspired by: +# syzbot+6532e9aab8911f58beeb@syzkaller.appspotmail.com + +. ../default.cfg +[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 + +dir=/tmp +odir=`pwd` +cd $dir +sed '1,/^EOF/d' < $odir/$0 > $dir/mmap34.c +mycc -o mmap34 -Wall -Wextra -O0 -g mmap34.c -lpthread || exit 1 +cd $odir + +set -e +mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint +[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart +mdconfig -a -t swap -s 4g -u $mdstart +newfs $newfs_flags -n md$mdstart > /dev/null +mount /dev/md$mdstart $mntpoint +set +e + +(cd ../testcases/swap; ./swap -t 5m -i 20) & +cd $mntpoint +$dir/mmap34 +s=$? +while pkill swap; do :; done +wait +[ -f mmap34.core ] && + { ls -l mmap34.core; mv mmap34.core $dir; s=1; } +cd $odir + +for i in `jot 6`; do + mount | grep -q "on $mntpoint " || break + umount $mntpoint && break || sleep 10 + [ $i -eq 6 ] && + { echo FATAL; fstat -mf $mntpoint; exit 1; } +done +mdconfig -d -u $mdstart +rm -f $dir/mmap34 +[ $s -eq 0 ] && rm -f mmap34.c +exit $s + +EOF +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#include <machine/atomic.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +static volatile u_int *share; + +#if defined(__LP64__) +#define MASK 0x7ffffffffffffULL +#else +#define MASK 0xffffffffULL +#endif +#define PARALLEL 64 +#define RUNTIME (5 * 60) +#define SYNC 0 + +static int fd; + +static void * +t1(void *data __unused) +{ + off_t offset; + time_t start; + + start = time(NULL); + while (time(NULL) - start < 30) { + offset = arc4random(); + offset = (offset << 32) | arc4random(); + offset &= MASK; + if (lseek(fd, offset, SEEK_SET) == -1) + err(1, "lseek(%jd)", offset); + if (write(fd, "a", 1) != 1) + err(1, "write"); + if (fsync(fd) == -1) + err(1, "fsync"); + usleep(100); + } + return (NULL); +} +static void * +t2(void *data __unused) +{ + off_t offset, old; + time_t start; + void *p; + char *c; + + old = 0; + start = time(NULL); + while (time(NULL) - start < 30) { + if (old != 0) + munmap(p, old); + offset = arc4random(); + offset = (offset << 32) | arc4random(); + offset &= MASK; + if (ftruncate(fd, offset) == -1) + err(1, "ftruncate(%jd)", offset); + write(fd, "b", 1); + p = mmap(NULL, offset, PROT_READ | PROT_WRITE, MAP_SHARED, + fd, 0); + if (p == MAP_FAILED) + old = 0; + else { + old = offset; + c = p; + c[offset / 2] = 1; + if (offset > 0) + c[offset - 1] = 2; + } + usleep(20000); + } + return (NULL); +} + +static void +test(void) +{ + pthread_t tid[2]; + int r; + char file[80]; + + atomic_add_int(&share[SYNC], 1); + while (share[SYNC] != PARALLEL) + ; + + snprintf(file, sizeof(file), "file.%d", getpid()); + if ((fd = open(file, O_RDWR | O_CREAT, DEFFILEMODE)) == -1) + err(1, "open(%s)", file); + + if ((r = pthread_create(&tid[0], NULL, t1, NULL)) != 0) + errc(1, r, "pthread_create"); + if ((r = pthread_create(&tid[1], NULL, t2, NULL)) != 0) + errc(1, r, "pthread_create"); + + if ((r = pthread_join(tid[0], NULL)) != 0) + errc(1, r, "pthread_join"); + if ((r = pthread_join(tid[1], NULL)) != 0) + errc(1, r, "pthread_join"); + close(fd); + unlink(file); + + _exit(0); +} + +int +main(void) +{ + pid_t pids[PARALLEL]; + size_t len; + time_t start; + int e, i, status; + + e = 0; + len = PAGE_SIZE; + if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) + err(1, "mmap"); + + start = time(NULL); + while ((time(NULL) - start) < RUNTIME && e == 0) { + share[SYNC] = 0; + for (i = 0; i < PARALLEL; i++) { + if ((pids[i] = fork()) == 0) + test(); + if (pids[i] == -1) + err(1, "fork()"); + } + for (i = 0; i < PARALLEL; i++) { + if (waitpid(pids[i], &status, 0) == -1) + err(1, "waitpid(%d)", pids[i]); + if (status != 0) { + if (WIFSIGNALED(status)) + fprintf(stderr, + "pid %d exit signal %d\n", + pids[i], WTERMSIG(status)); + } + e += status == 0 ? 0 : 1; + } + } + + return (e); +}
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