Date: Fri, 27 Sep 2019 07:20:18 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r352789 - user/pho/stress2/misc Message-ID: <201909270720.x8R7KIL0015514@repo.freebsd.org>
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Author: pho Date: Fri Sep 27 07:20:18 2019 New Revision: 352789 URL: https://svnweb.freebsd.org/changeset/base/352789 Log: Added a regression test. Sponsored by: Dell EMC Isilon Added: user/pho/stress2/misc/fexecve.sh (contents, props changed) Added: user/pho/stress2/misc/fexecve.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/fexecve.sh Fri Sep 27 07:20:18 2019 (r352789) @@ -0,0 +1,96 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2019 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. +# +# $FreeBSD$ +# + +# Reported by syzkaller. +# "panic: vm_page_free_prep: page 0x61e5968 has unexpected ref_count ." seen +# Fixed by r352748 + +# Test scenario by: Mark Johnston <markj@freebsd.org> + +cat > /tmp/fexecve.c <<EOF +#include <sys/param.h> +#include <sys/mman.h> +#include <sys/stat.h> + +#include <fcntl.h> +#include <err.h> +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> + +int +main(int argc __unused, char **argv) +{ + char template[PATH_MAX]; + void *addr; + size_t sz; + int fd; + + sz = 16 * 4096; + + (void)snprintf(template, sizeof(template), "test.XXXXXX"); + fd = mkstemp(template); + if (fd < 0) + err(1, "mkstemp"); + if (fchmod(fd, 0700) < 0) + err(1, "fchmod"); + if (ftruncate(fd, sz) < 0) + err(1, "ftruncate"); + + addr = mmap(NULL, sz, PROT_MAX(PROT_READ) | PROT_READ, MAP_SHARED, + fd, 0); + if (addr == MAP_FAILED) + err(1, "mmap"); + + if (mlock(addr, sz) != 0) + err(1, "mlock"); + + if (ftruncate(fd, 0) != 0) + err(1, "ftruncate"); + if (ftruncate(fd, sz) != 0) + err(1, "ftruncate"); + + (void)close(fd); + + fd = open(template, O_EXEC); + if (fd < 0) + err(1, "open"); + fexecve(fd, argv, NULL); + err(1, "fexecve"); + + return (0); +} +EOF +cc -o /tmp/fexecve -Wall -Wextra -O2 /tmp/fexecve.c || exit 1 +echo "Expect: fexecve: fexecve: Input/output error" +/tmp/fexecve + +rm -f /tmp/fexecve /tmp/fexecve.c
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