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Fix a possible infinite loop in pmap_kremove()

This commit is contained in:
scole 2017-04-08 20:59:27 +00:00
parent 169a1fef7d
commit a8da0966b9
1 changed files with 5 additions and 5 deletions
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10
sys/arch/ia64/ia64/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.35 2017/04/08 18:08:33 scole Exp $ */
/* $NetBSD: pmap.c,v 1.36 2017/04/08 20:59:27 scole Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
@ -81,7 +81,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.35 2017/04/08 18:08:33 scole Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.36 2017/04/08 20:59:27 scole Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -2110,11 +2110,12 @@ void
pmap_kremove(vaddr_t va, vsize_t size)
{
struct ia64_lpte *pte;
vaddr_t eva = va + size;
UVMHIST_FUNC(__func__); UVMHIST_CALLED(maphist);
UVMHIST_LOG(maphist, "(va=%#lx)", va, 0, 0, 0);
while (size > 0) {
while (va < eva) {
pte = pmap_find_kpte(va);
if (pmap_present(pte)) {
KASSERT(pmap_managed(pte) != 0);
@ -2123,7 +2124,6 @@ pmap_kremove(vaddr_t va, vsize_t size)
pmap_clear_present(pte);
}
va += PAGE_SIZE;
size -= PAGE_SIZE;
}
}