From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 23 Oct 2022 17:29:08 +0000 (-0400)
Subject: memcpy_real(): WRITE is "data source", not destination...
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b50705b5ef09c9683eb88d6583e6b49f5ac21219;p=users%2Fjedix%2Flinux-maple.git

memcpy_real(): WRITE is "data source", not destination...

[ Upstream commit 77729412acde120712f5793e9134c2b1cbd1ee02 ]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Stable-dep-of: 6dd88fd59da8 ("vhost-scsi: unbreak any layout for response")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c
index 1571cdcb0c50..753b006c8ea5 100644
--- a/arch/s390/mm/maccess.c
+++ b/arch/s390/mm/maccess.c
@@ -128,7 +128,7 @@ int memcpy_real(void *dest, unsigned long src, size_t count)
 
 	kvec.iov_base = dest;
 	kvec.iov_len = count;
-	iov_iter_kvec(&iter, WRITE, &kvec, 1, count);
+	iov_iter_kvec(&iter, READ, &kvec, 1, count);
 	if (memcpy_real_iter(&iter, src, count) < count)
 		return -EFAULT;
 	return 0;