---

yaml --- r: 298648 b: refs/heads/master c: 44c8249 h: refs/heads/master v: v3
git-mirror · Apr 5, 2012 · a014f54 · a014f54
1 parent d32d99b
commit a014f54
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Showing 2 changed files with 18 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0d08d7b7e13b5060181b11ecdde82d8fda322123
+refs/heads/master: 44c824982fd37a578da23cc90885e9690a6a3f0e
diff --git a/trunk/fs/xattr.c b/trunk/fs/xattr.c
@@ -321,6 +321,7 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
 {
 	int error;
 	void *kvalue = NULL;
+	void *vvalue = NULL;	/* If non-NULL, we used vmalloc() */
 	char kname[XATTR_NAME_MAX + 1];
 
 	if (flags & ~(XATTR_CREATE|XATTR_REPLACE))
@@ -335,13 +336,25 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
 	if (size) {
 		if (size > XATTR_SIZE_MAX)
 			return -E2BIG;
-		kvalue = memdup_user(value, size);
-		if (IS_ERR(kvalue))
-			return PTR_ERR(kvalue);
+		kvalue = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
+		if (!kvalue) {
+			vvalue = vmalloc(size);
+			if (!vvalue)
+				return -ENOMEM;
+			kvalue = vvalue;
+		}
+		if (copy_from_user(kvalue, value, size)) {
+			error = -EFAULT;
+			goto out;
+		}
 	}
 
 	error = vfs_setxattr(d, kname, kvalue, size, flags);
-	kfree(kvalue);
+out:
+	if (vvalue)
+		vfree(vvalue);
+	else
+		kfree(kvalue);
 	return error;
 }