From: <gregkh@linuxfoundation.org>
To: Dave.Martin@arm.com, gregkh@linuxfoundation.org,
rmk+kernel@arm.linux.org.uk, rmk+kernel@armlinux.org.uk
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write" has been added to the 4.4-stable tree
Date: Fri, 10 Feb 2017 22:09:44 +0100 [thread overview]
Message-ID: <1486760984125173@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
ARM: 8643/3: arm/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:
arm-8643-3-arm-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@vger.kernel.org> know about it.
>From 228dbbfb5d77f8e047b2a1d78da14b7158433027 Mon Sep 17 00:00:00 2001
From: Dave Martin <Dave.Martin@arm.com>
Date: Wed, 18 Jan 2017 17:11:56 +0100
Subject: ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write
From: Dave Martin <Dave.Martin@arm.com>
commit 228dbbfb5d77f8e047b2a1d78da14b7158433027 upstream.
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Fixes: 5be6f62b0059 ("ARM: 6883/1: ptrace: Migrate to regsets framework")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -600,7 +600,7 @@ static int gpr_set(struct task_struct *t
const void *kbuf, const void __user *ubuf)
{
int ret;
- struct pt_regs newregs;
+ struct pt_regs newregs = *task_pt_regs(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&newregs,
Patches currently in stable-queue which might be from Dave.Martin@arm.com are
queue-4.4/arm-8643-3-arm-ptrace-preserve-previous-registers-for-short-regset-write.patch
reply other threads:[~2017-02-10 21:09 UTC|newest]
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