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#!/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.
#
# 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
# Note that r334783 seems to alleviate the problem.
. ../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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