From 0fe14a1ff936c38ab9aa7f85219d0c155d276823 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sun, 25 Apr 2021 16:31:40 +0200
Subject: Added range-based memory validator

---
 kernel/features/io.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'kernel/features/io.c')

diff --git a/kernel/features/io.c b/kernel/features/io.c
index fbae5cf..d4737bf 100644
--- a/kernel/features/io.c
+++ b/kernel/features/io.c
@@ -120,7 +120,7 @@ res io_control(enum io_type io, u32 request, void *arg1, void *arg2, void *arg3)
 
 res io_write(enum io_type io, const void *buf, u32 offset, u32 count)
 {
-	if (!memory_readable(buf))
+	if (!memory_readable_range(memory_range(buf, count)))
 		return -EFAULT;
 
 	struct io_dev *dev;
@@ -132,7 +132,7 @@ res io_write(enum io_type io, const void *buf, u32 offset, u32 count)
 
 res io_read(enum io_type io, void *buf, u32 offset, u32 count)
 {
-	if (!memory_readable(buf))
+	if (!memory_writable_range(memory_range(buf, count)))
 		return -EFAULT;
 
 	struct io_dev *dev;
-- 
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