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Explicitly protect the kernel image against tampering by marking it R-X

This commit is contained in:
reinoud 2012-01-10 10:09:49 +00:00
parent 9a00affba3
commit 77d1be9922
1 changed files with 2 additions and 5 deletions
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7
sys/arch/usermode/usermode/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.99 2012/01/09 14:58:15 reinoud Exp $ */
/* $NetBSD: pmap.c,v 1.100 2012/01/10 10:09:49 reinoud Exp $ */
/*-
* Copyright (c) 2011 Reinoud Zandijk <reinoud@NetBSD.org>
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.99 2012/01/09 14:58:15 reinoud Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.100 2012/01/10 10:09:49 reinoud Exp $");
#include "opt_memsize.h"
#include "opt_kmempages.h"
@ -251,12 +251,9 @@ pmap_bootstrap(void)
#endif
/* protect the current kernel section */
#if 0
int err;
err = thunk_mprotect((void *) kmem_k_start, kmem_k_end - kmem_k_start,
THUNK_PROT_READ | THUNK_PROT_EXEC);
assert(err == 0);
#endif
/* initialize counters */
fpos = 0;