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84 lines
2.5 KiB
Bash
Executable file
84 lines
2.5 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2013 EMC Corp.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Issue involving signed overflow.
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# Test scenario based on panic seen in
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# http://people.freebsd.org/~pho/stress/log/kostik640.txt
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# Fixed in r258365, r258397.
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# Scenario by kib@
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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mount | grep -q "/proc " || mount -t procfs procfs /proc
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here=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $here/$0 > procfs_lr.c
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mycc -o procfs_lr -Wall -Wextra -O2 procfs_lr.c || exit 1
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rm -f procfs_lr.c
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/tmp/procfs_lr 2>/dev/null
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rm -f /tmp/procfs_lr
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exit 0
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EOF
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/* $Id: procfs_lr.c,v 1.1 2013/11/16 07:06:46 kostik Exp kostik $ */
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#include <sys/types.h>
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#include <sys/fcntl.h>
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#include <err.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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int
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main(void)
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{
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static const char name[] = "/proc/curproc/map";
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const off_t uio_offset = 0x6f51f3a1185bced9;
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#if defined(__LP64__)
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const size_t uio_resid = 0x4c330b10965a61af;
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#else
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const size_t uio_resid = 0x965a61af;
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#endif
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char buf[1];
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int error, fd;
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fd = open(name, O_RDONLY);
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if (fd == -1)
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err(1, "open");
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error = pread(fd, buf, uio_resid, uio_offset);
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if (error == -1)
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fprintf(stderr, "pread: %s\n", strerror(errno));
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return (0);
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}
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