Patch "sparc/ptrace: Preserve previous registers for short regset write" has been added to the 3.18-stable tree

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

sparc/ptrace: Preserve previous registers for short regset write

to the 3.18-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:
sparc-ptrace-preserve-previous-registers-for-short-regset-write.patch
and it can be found in the queue-3.18 subdirectory.

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

From: Dave Martin <[email protected]>
Date: Mon, 27 Mar 2017 15:10:59 +0100
Subject: sparc/ptrace: Preserve previous registers for short regset write

From: Dave Martin <[email protected]>

commit d3805c546b275c8cc7d40f759d029ae92c7175f2 upstream.

Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved.

---
 arch/sparc/kernel/ptrace_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -311,7 +311,7 @@ static int genregs64_set(struct task_str
 	}
 
 	if (!ret) {
-		unsigned long y;
+		unsigned long y = regs->y;
 
 		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
 					 &y,

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

queue-3.18/metag-ptrace-reject-partial-nt_metag_rpipe-writes.patch queue-3.18/metag-ptrace-preserve-previous-registers-for-short-regset-write.patch queue-3.18/metag-ptrace-provide-default-txstatus-for-short-nt_prstatus.patch queue-3.18/c6x-ptrace-remove-useless-ptrace_setregset-implementation.patch queue-3.18/mips-ptrace-preserve-previous-registers-for-short-regset-write.patch queue-3.18/sparc-ptrace-preserve-previous-registers-for-short-regset-write.patch