---

yaml --- r: 80534 b: refs/heads/master c: 6eade8f h: refs/heads/master v: v3
git-mirror · Jan 30, 2008 · 78a3e6c · 78a3e6c
1 parent c6c1a81
commit 78a3e6c
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Showing 2 changed files with 10 additions and 9 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4692a1450b4d1000a942022b088c8791749dd65e
+refs/heads/master: 6eade8ff461fdf13ec6780602eb5618e0bdaa972
diff --git a/trunk/arch/x86/mm/pageattr.c b/trunk/arch/x86/mm/pageattr.c
@@ -312,10 +312,10 @@ static int change_page_attr_set(unsigned long addr, int numpages,
 	for (i = 0; i < numpages ; i++) {
 
 		pte = lookup_address(addr, &level);
-		if (pte)
-			current_prot = pte_pgprot(*pte);
-		else
-			pgprot_val(current_prot) = 0;
+		if (!pte)
+			return -EINVAL;
+
+		current_prot = pte_pgprot(*pte);
 
 		pgprot_val(new_prot) =
 			pgprot_val(current_prot) | pgprot_val(prot);
@@ -356,11 +356,12 @@ static int change_page_attr_clear(unsigned long addr, int numpages,
 	int i, ret;
 
 	for (i = 0; i < numpages; i++) {
+
 		pte = lookup_address(addr, &level);
-		if (pte)
-			current_prot = pte_pgprot(*pte);
-		else
-			pgprot_val(current_prot) = 0;
+		if (!pte)
+			return -EINVAL;
+
+		current_prot = pte_pgprot(*pte);
 
 		pgprot_val(new_prot) =
 				pgprot_val(current_prot) & ~pgprot_val(prot);