Date: Wed, 30 May 2018 08:34:20 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r334377 - user/pho/stress2/misc Message-ID: <201805300834.w4U8YKuh012356@repo.freebsd.org>
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Author: pho Date: Wed May 30 08:34:19 2018 New Revision: 334377 URL: https://svnweb.freebsd.org/changeset/base/334377 Log: Added a "sendfile(2) over socket pairs" test. Sponsored by: Dell EMC Isilon Added: user/pho/stress2/misc/sendfile15.sh (contents, props changed) Added: user/pho/stress2/misc/sendfile15.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/sendfile15.sh Wed May 30 08:34:19 2018 (r334377) @@ -0,0 +1,219 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2018 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. +# +# $FreeBSD$ +# + +# sendfile() over socket pairs test. + +# Page fault in unp_dispose+0x90 seen: +# https://people.freebsd.org/~pho/stress/log/sendfile15.txt + +# "panic: bad pte va 800657000 pte 0" seen: +# https://people.freebsd.org/~pho/stress/log/sendfile15-2.txt + +# "panic: vm_page_free_prep 0xfffff817e0efac10 PG_ZERO 87 ...": +# https://people.freebsd.org/~pho/stress/log/sendfile15-2.txt + +. ../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/sendfile15.c +mycc -o sendfile15 -Wall -Wextra -O0 -g sendfile15.c || exit 1 +rm -f sendfile15.c +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 2g -u $mdstart +bsdlabel -w md$mdstart auto +newfs $newfs_flags md${mdstart}$part > /dev/null +mount /dev/md${mdstart}$part $mntpoint +set +e + +cd $mntpoint +dd if=/dev/random of=input bs=4k count=1 status=none +(cd $odir/../testcases/swap; ./swap -t 5m -i 20 > /dev/null) & +$dir/sendfile15 +s=$? +while pgrep -q swap; do + pkill swap +done +wait +[ -f sendfile15.core -a $s -eq 0 ] && + { ls -l sendfile15.core; mv sendfile15.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 -rf $dir/sendfile15 +exit $s + +EOF +#include <sys/param.h> +#include <sys/fcntl.h> +#include <sys/mman.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/stat.h> +#include <sys/uio.h> +#include <sys/wait.h> + +#include <machine/atomic.h> + +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +static volatile u_int *share; + +#define PARALLEL 128 +#define RUNTIME (5 * 60) +#define SYNC 0 + +static void +test(void) +{ + struct stat st; + off_t written, pos; + int child, error, from, n, status, sv[2]; + char *buf; + const char *from_name; + + atomic_add_int(&share[SYNC], 1); + while (share[SYNC] != PARALLEL) + ; + + from_name = "input"; + + if ((from = open(from_name, O_RDONLY)) == -1) + err(1, "open read %s", from_name); + + if ((error = fstat(from, &st)) == -1) + err(1, "stat %s", from_name); + + if ((error = socketpair(AF_UNIX, SOCK_STREAM, 0, sv)) == -1) + err(1, "socketpair"); + + child = fork(); + if (child == -1) + err(1, "fork"); + else if (child != 0) { + setproctitle("parent"); + close(sv[1]); + pos = 0; + for (;;) { + error = sendfile(from, sv[0], pos, st.st_size - pos, + NULL, &written, 0); + if (error == -1) { + if (errno != EAGAIN) + err(1, "sendfile"); + } + pos += written; + if (pos == st.st_size) + break; + } + close(sv[0]); + if (waitpid(child, &status, 0) != child) + err(1, "waitpid(%d)", child); + } else { + setproctitle("child"); + close(sv[0]); + buf = malloc(st.st_size); + if (buf == NULL) + err(1, "malloc %jd", st.st_size); + pos = 0; + for (;;) { + written = st.st_size - pos; + n = read(sv[1], buf + pos, written); + if (n == -1) + err(1, "read"); + else if (n == 0) + errx(1, "Short read"); + pos += n; + if (pos == st.st_size) + break; + } + close(sv[1]); + _exit(0); + } + + _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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