1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2018 Dell EMC Isilon 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# "panic: Bad tailq NEXT(0xfffff815a589e238->tqh_last) != NULL" seen. 31# https://people.freebsd.org/~pho/stress/log/kevent14.txt 32# Fixed by r340734. 33 34# Test scenario by: Mark Johnston <markj@freebsd.org> 35 36cat > /tmp/kevent14.c <<EOF 37#include <sys/event.h> 38 39#include <err.h> 40#include <time.h> 41#include <stdlib.h> 42 43int 44main(void) 45{ 46 struct kevent ev[2]; 47 time_t start; 48 int kq, ret; 49 50 kq = kqueue(); 51 if (kq < 0) 52 err(1, "kqueue"); 53 54 EV_SET(&ev[0], 42, EVFILT_TIMER, EV_ADD | EV_ENABLE | EV_ONESHOT, 0, 55 0, 0); 56 57 start = time(NULL); 58 while (time(NULL) - start < 120) { 59 ret = kevent(kq, &ev[0], 1, &ev[1], 1, NULL); 60 if (ret < 0) 61 err(1, "kevent"); 62 if (ret == 0) 63 errx(1, "no events"); 64 if (ret == 1 && (ev[1].flags & EV_ERROR) != 0) 65 errc(1, ev[1].data, "kevent"); 66 } 67 68 return (0); 69} 70EOF 71cc -o /tmp/kevent14 -Wall -Wextra -g -O2 /tmp/kevent14.c 72rm /tmp/kevent14.c 73 74/tmp/kevent14 75 76rm -f /tmp/kevent14 77exit 0 78