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fix off by one in find_last_set(); triggered for processes that have no

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open file descriptors; found by tim robbins from freebsd
This commit is contained in:
provos 2003-11-30 18:16:45 +00:00
parent 077285e52b
commit a0ce863234
1 changed files with 3 additions and 3 deletions
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6
sys/kern/kern_descrip.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_descrip.c,v 1.120 2003/11/26 12:42:28 yamt Exp $ */
/* $NetBSD: kern_descrip.c,v 1.121 2003/11/30 18:16:45 provos Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_descrip.c,v 1.120 2003/11/26 12:42:28 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_descrip.c,v 1.121 2003/11/30 18:16:45 provos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -134,7 +134,7 @@ find_last_set(struct filedesc *fd, int last)
off = (last - 1) >> NDENTRYSHIFT;
while (!bitmap[off] && off >= 0)
while (off >= 0 && !bitmap[off])
off--;
if (off < 0)