#!/bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2019 Peter Holm
#
# 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.
#
# pipe(2) tests.
# "panic: vm_page_dequeue: queued unlocked page 0xfffffe0019a73518" seen.
# Reported by syzkaller
# Fixed by r354400
. ../default.cfg
dir=/tmp
odir=`pwd`
cd $dir
sed '1,/^EOF/d' < $odir/$0 > $dir/pipe3.c
mycc -o pipe3 -Wall -Wextra -O0 -g pipe3.c || exit 1
rm -f pipe3.c
cd $odir
(cd ../testcases/swap; ./swap -t 5m -i 20 -l 100) &
sleep 1
for i in `jot 25`; do
/tmp/pipe3 &
done
while pkill -0 pipe3; do sleep 2; done
while pkill -9 swap; do sleep 1; done
wait
rm -rf /tmp/pipe3
exit 0
EOF
#include <sys/types.h>
#include <sys/wait.h>
#include <err.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#define PARALLEL 64
#define RUNTIME (5 * 60)
static void
handler(int i __unused) {
_exit(0);
}
void
test(void)
{
int fds[2], r;
char c;
if (pipe(fds) == -1)
err(1, "pipe");
if (fork() == 0) {
signal(SIGALRM, handler);
ualarm(1 + arc4random() % 10000, 0);
close(fds[1]);
if ((r = write(fds[0], &c, sizeof(c))) != sizeof(c))
if (r == -1)
err(1, "pipe write");
_exit(0);
}
signal(SIGALRM, handler);
ualarm(1 + arc4random() % 10000, 0);
close(fds[0]);
if ((r = read(fds[1], &c, sizeof(c))) != sizeof(c))
if (r == -1)
err(1, "pipe read");
wait(NULL);
_exit(0);
}
int
main(void)
{
pid_t pids[PARALLEL], rpid;
time_t start;
int i, running, status;
bool done;
for (i = 0; i < PARALLEL; i++)
pids[i] = 0;
running = 0;
start = time(NULL);
for (;;) {
done = (time(NULL) - start) >= RUNTIME;
for (i = 0; i < PARALLEL; i++) {
if (pids[i] == 0 && !done) {
if ((pids[i] = fork()) == 0)
test();
if (pids[i] == -1)
err(1, "fork()");
running++;
}
}
for (i = 0; i < PARALLEL; i++) {
if (pids[i] != 0) {
if ((rpid = waitpid(pids[i], &status,
WNOHANG)) == -1)
err(1, "waitpid(%d)", pids[i]);
if (rpid == 0)
continue;
if (rpid != pids[i])
err(1, "waitpid(%d)", pids[i]);
running --;
pids[i] = 0;
break;
}
}
if (running == 0 && done)
break;
usleep(100);
}
return (0);
}
