From: mischief@9.offblast.org
To: 9fans@9fans.net
Subject: [9fans] pool curalloc bug
Date: Wed, 25 Feb 2015 21:38:15 -0500 [thread overview]
Message-ID: <411f4ed7862275a46cf5a477a3aff0c4@sigma.offblast.org> (raw)
does anyone care to take a stab at figuring out why mainmem->curalloc underflows? here's a c program to reproduce.
#include <u.h>
#include <libc.h>
/*
8c curalloc.c
8l curalloc.8
p=`{8.out >[2=1] | awk '{ print $2 }' | tr -d : }
echo '*mainmem' | acid -lpool $p
-> curalloc 4294967016
*/
void
domalloc(int n)
{
int i;
void **a;
a = mallocz(n * sizeof(void*), 1);
for(i = 0; i < n; i++){
a[i] = malloc(1024*1024*5);
}
for(i = 0; i < n; i++){
free(a[i]);
}
free(a);
}
void
main(int argc, char *argv[])
{
ARGBEGIN{
}ARGEND
domalloc(2);
abort();
}
next reply other threads:[~2015-02-26 2:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-26 2:38 mischief [this message]
2015-02-26 22:27 ` mischief
2015-03-02 8:06 ` erik quanstrom
2015-03-02 10:10 ` cinap_lenrek
2015-03-02 10:23 ` cinap_lenrek
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