This is a note to let you know that I've just added the patch titled
ARM: 7913/1: fix framepointer check in unwind_frame
to the 3.4-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-7913-1-fix-framepointer-check-in-unwind_frame.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3abb6671a9c04479c4bd026798a05f857393b7e2 Mon Sep 17 00:00:00 2001
From: Konstantin Khlebnikov <k.khlebnikov@xxxxxxxxxxx>
Date: Thu, 5 Dec 2013 14:23:48 +0100
Subject: ARM: 7913/1: fix framepointer check in unwind_frame
From: Konstantin Khlebnikov <k.khlebnikov@xxxxxxxxxxx>
commit 3abb6671a9c04479c4bd026798a05f857393b7e2 upstream.
This patch fixes corner case when (fp + 4) overflows unsigned long,
for example: fp = 0xFFFFFFFF -> fp + 4 == 3.
Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@xxxxxxxxxxx>
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/kernel/stacktrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kernel/stacktrace.c
+++ b/arch/arm/kernel/stacktrace.c
@@ -31,7 +31,7 @@ int notrace unwind_frame(struct stackfra
high = ALIGN(low, THREAD_SIZE);
/* check current frame pointer is within bounds */
- if (fp < (low + 12) || fp + 4 >= high)
+ if (fp < low + 12 || fp > high - 4)
return -EINVAL;
/* restore the registers from the stack frame */
Patches currently in stable-queue which might be from k.khlebnikov@xxxxxxxxxxx are
queue-3.4/arm-7913-1-fix-framepointer-check-in-unwind_frame.patch
queue-3.4/arm-7912-1-check-stack-pointer-in-get_wchan.patch
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