Patch "metag/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

metag/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:
metag-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 15:10:55 +0100
Subject: metag/ptrace: Preserve previous registers for short regset write

From: Dave Martin <[email protected]>

commit a78ce80d2c9178351b34d78fec805140c29c193e upstream.

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

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

@@ -303,7 +303,7 @@ static int metag_tls_set(struct task_str
 			const void *kbuf, const void __user *ubuf)
 {
 	int ret;
-	void __user *tls;
+	void __user *tls = target->thread.tls_ptr;
 
 	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &tls, 0, -1);
 	if (ret)

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