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Patch "openrisc: fix the fix of copy_from_user()" has been added to the 4.7-stable tree

PATCH [email protected] 1 participant 1 message Sep 23, 2016

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This is a note to let you know that I've just added the patch titled

openrisc: fix the fix of copy_from_user()

to the 4.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
openrisc-fix-the-fix-of-copy_from_user.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 8e4b72054f554967827e18be1de0e8122e6efc04 Mon Sep 17 00:00:00 2001

From: Guenter Roeck <[email protected]>
Date: Sat, 17 Sep 2016 12:57:24 -0700
Subject: openrisc: fix the fix of copy_from_user()

From: Guenter Roeck <[email protected]>

commit 8e4b72054f554967827e18be1de0e8122e6efc04 upstream.

Since commit acb2505d0119 ("openrisc: fix copy_from_user()"), copy_from_user() returns the number of bytes requested, not the number of bytes not copied.

Cc Al Viro <[email protected]>
Fixes acb2505d0119 ("openrisc: fix copy_from_user()")
---
 arch/openrisc/include/asm/uaccess.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
arch/openrisc/include/asm/uaccess.h +1 -1
@@ -276,7 +276,7 @@ copy_from_user(void *to, const void *fro
 	unsigned long res = n;
 
 	if (likely(access_ok(VERIFY_READ, from, n)))
-		n = __copy_tofrom_user(to, from, n);
+		res = __copy_tofrom_user(to, from, n);
 	if (unlikely(res))
 		memset(to + (n - res), 0, res);
 	return res;

Patches currently in stable-queue which might be from [email protected] are

queue-4.7/avr32-fix-undefined-reference-to-___copy_from_user.patch queue-4.7/iio-adc-rockchip_saradc-reset-saradc-controller-before-programming-it.patch queue-4.7/openrisc-fix-the-fix-of-copy_from_user.patch