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 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:
sparc-ptrace-preserve-previous-registers-for-short-regset-write.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 <stable@xxxxxxxxxxxxxxx> know about it.
>From d3805c546b275c8cc7d40f759d029ae92c7175f2 Mon Sep 17 00:00:00 2001
From: Dave Martin <Dave.Martin@xxxxxxx>
Date: Mon, 27 Mar 2017 15:10:59 +0100
Subject: sparc/ptrace: Preserve previous registers for short regset write
From: Dave Martin <Dave.Martin@xxxxxxx>
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.
Signed-off-by: Dave Martin <Dave.Martin@xxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/sparc/kernel/ptrace_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -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 Dave.Martin@xxxxxxx are
queue-4.4/metag-ptrace-reject-partial-nt_metag_rpipe-writes.patch
queue-4.4/metag-ptrace-preserve-previous-registers-for-short-regset-write.patch
queue-4.4/metag-ptrace-provide-default-txstatus-for-short-nt_prstatus.patch
queue-4.4/c6x-ptrace-remove-useless-ptrace_setregset-implementation.patch
queue-4.4/mips-ptrace-preserve-previous-registers-for-short-regset-write.patch
queue-4.4/h8300-ptrace-fix-incorrect-register-transfer-count.patch
queue-4.4/sparc-ptrace-preserve-previous-registers-for-short-regset-write.patch