1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2021 Peter Holm <pho@FreeBSD.org> 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# Regression test for 31# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217435 32# by Tim Newsham <tim newsham nccgroup trust> 33 34# panic: Assertion size > 0 failed at ../../../kern/subr_vmem.c:1082 35# cpuid = 2 36# time = 1501182301 37# KDB: stack backtrace: 38# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0173117650 39# vpanic() at vpanic+0x19c/frame 0xfffffe01731176d0 40# kassert_panic() at kassert_panic+0x126/frame 0xfffffe0173117740 41# vmem_alloc() at vmem_alloc+0x11b/frame 0xfffffe0173117780 42# kmem_malloc() at kmem_malloc+0x33/frame 0xfffffe01731177b0 43# uma_large_malloc() at uma_large_malloc+0x48/frame 0xfffffe01731177f0 44# malloc() at malloc+0xe3/frame 0xfffffe0173117840 45# ktrgenio() at ktrgenio+0x60/frame 0xfffffe0173117880 46# sys_kevent() at sys_kevent+0x12f/frame 0xfffffe0173117930 47# amd64_syscall() at amd64_syscall+0x7d2/frame 0xfffffe0173117ab0 48 49# Fixed by r315155. 50 51. ../default.cfg 52 53cat > /tmp/kevent10.c <<EOF 54#include <sys/param.h> 55#include <sys/event.h> 56#include <sys/time.h> 57#include <sys/uio.h> 58#include <sys/ktrace.h> 59 60#include <err.h> 61#include <errno.h> 62#include <fcntl.h> 63#include <stdio.h> 64#include <stdlib.h> 65#include <string.h> 66#include <unistd.h> 67 68int 69main(void) 70{ 71 struct kevent changes; 72 struct kevent events; 73 char *fn = "/tmp/kevent10.trace"; 74 75 if (open(fn, O_RDWR | O_CREAT, 0666) == -1) 76 err(1, "%s", fn); 77 if (ktrace(fn, KTRFLAG_DESCEND | KTROP_SET, KTRFAC_GENIO, 0) == -1) 78 err(1, "ktrace"); 79 memset(&changes, 0, sizeof(struct kevent)); 80 memset(&events, 0, sizeof(struct kevent)); 81 if (kevent(0, &changes, -1, &events, 1, 0) == -1) 82 if (errno != EBADF) 83 err(1, "kevent"); 84 if (ktrace(fn, KTROP_CLEARFILE, KTRFAC_GENIO, 0) == -1) 85 err(1, "ktrace clear"); 86 87 return (0); 88} 89EOF 90 91mycc -o /tmp/kevent10 -Wall -Wextra -O2 /tmp/kevent10.c || exit 1 92rm /tmp/kevent10.c 93 94/tmp/kevent10 95s=$? 96 97rm /tmp/kevent10 /tmp/kevent10.trace 98exit $s 99