82 lines
2.4 KiB
Bash
Executable File
82 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2014 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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# Leak of "vm.stats.vm.v_user_wire_count" seen.
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# This test must run in single user mode for accurate leak reporting.
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# Test scenario by: Mark Johnston markj@
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# Fixed in r269134.
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. ../default.cfg
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dir=/tmp
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odir=`pwd`
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cd $dir
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sed '1,/^EOF/d' < $odir/$0 > $dir/mmap13.c
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mycc -o mmap13 -O2 -Wall -Wextra mmap13.c || exit 1
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rm -f mmap13.c
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cd $odir
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# Both the 5000 and 500 are empirical values.
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# Combined they demonstrate the leak in a consistent way.
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v1=`sysctl -n vm.stats.vm.v_user_wire_count`
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for i in `jot 5000`; do
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/tmp/mmap13
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done 2>&1 | tail -5
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v2=`sysctl -n vm.stats.vm.v_user_wire_count`
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[ $v2 -gt $((v1 + 500)) ] &&
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echo "vm.stats.vm.v_user_wire_count changed from $v1 to $v2."
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rm -f /tmp/mmap13
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exit 0
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EOF
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#include <sys/mman.h>
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#include <err.h>
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#include <stdlib.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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void *addr;
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size_t sz;
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sz = getpagesize();
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addr = mmap(NULL, sz, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
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if (addr == NULL)
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err(1, "mmap");
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if (mlock(addr, sz) != 0)
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err(1, "mlock");
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if (mprotect(addr, sz, PROT_NONE) != 0)
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err(1, "mprotect");
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return (0);
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}
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