1 files changed, 148 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/pipe3.sh b/tools/test/stress2/misc/pipe3.sh
new file mode 100755
index 000000000000..6208e1a52f90
--- /dev/null
+++ b/tools/test/stress2/misc/pipe3.sh
@@ -0,0 +1,148 @@
+#!/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);
+}