Patch "parisc: fix copy_from_user()" has been added to the 4.4-stable tree

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

parisc: fix copy_from_user()

to the 4.4-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:
parisc-fix-copy_from_user.patch
and it can be found in the queue-4.4 subdirectory.

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

From: Al Viro <[email protected]>
Date: Sat, 20 Aug 2016 19:03:37 -0400
Subject: parisc: fix copy_from_user()

From: Al Viro <[email protected]>

commit aace880feea38875fbc919761b77e5732a3659ef upstream.

---
 arch/parisc/include/asm/uaccess.h |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

@@ -10,6 +10,7 @@
 #include <asm-generic/uaccess-unaligned.h>
 
 #include <linux/bug.h>
+#include <linux/string.h>
 
 #define VERIFY_READ 0
 #define VERIFY_WRITE 1

@@ -245,13 +246,14 @@ static inline unsigned long __must_check
                                           unsigned long n)
 {
         int sz = __compiletime_object_size(to);
-        int ret = -EFAULT;
+        unsigned long ret = n;
 
         if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
                 ret = __copy_from_user(to, from, n);
         else
                 copy_from_user_overflow();
-
+	if (unlikely(ret))
+		memset(to + (n - ret), 0, ret);
         return ret;
 }
 

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

queue-4.4/nios2-copy_from_user-should-zero-the-tail-of-destination.patch queue-4.4/m32r-fix-__get_user.patch queue-4.4/microblaze-fix-copy_from_user.patch queue-4.4/cris-buggered-copy_from_user-copy_to_user-clear_user.patch queue-4.4/asm-generic-make-copy_from_user-zero-the-destination-properly.patch queue-4.4/metag-copy_from_user-should-zero-the-destination-on-access_ok-failure.patch queue-4.4/score-fix-__get_user-get_user.patch queue-4.4/parisc-fix-copy_from_user.patch queue-4.4/mips-copy_from_user-must-zero-the-destination-on-access_ok-failure.patch queue-4.4/alpha-fix-copy_from_user.patch queue-4.4/mn10300-failing-__get_user-and-get_user-should-zero.patch queue-4.4/openrisc-fix-copy_from_user.patch queue-4.4/avr32-fix-copy_from_user.patch queue-4.4/score-fix-copy_from_user-and-friends.patch queue-4.4/sh64-failing-__get_user-should-zero.patch queue-4.4/arc-uaccess-get_user-to-zero-out-dest-in-cause-of-fault.patch queue-4.4/hexagon-fix-strncpy_from_user-error-return.patch queue-4.4/frv-fix-clear_user.patch queue-4.4/fix-minor-infoleak-in-get_user_ex.patch queue-4.4/asm-generic-make-get_user-clear-the-destination-on-errors.patch queue-4.4/mn10300-copy_from_user-should-zero-on-access_ok-failure.patch queue-4.4/s390-get_user-should-zero-on-failure.patch queue-4.4/microblaze-fix-__get_user.patch queue-4.4/blackfin-fix-copy_from_user.patch queue-4.4/fix-iov_iter_fault_in_readable.patch queue-4.4/nios2-fix-__get_user.patch queue-4.4/sh-fix-copy_from_user.patch