ARM: 7913/1: fix framepointer check in unwind_frame
authorKonstantin Khlebnikov <k.khlebnikov@samsung.com>
Thu, 5 Dec 2013 13:23:48 +0000 (14:23 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 20 Dec 2013 15:45:07 +0000 (07:45 -0800)
commita5633d4871bae973f39945b2ba0f86f6bbd45ab4
tree384c61799427e4027dcb79b482871f278dc01a82
parent7768a84a3e65465c0fc96ec3d447453ea79dbaed
ARM: 7913/1: fix framepointer check in unwind_frame

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@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm/kernel/stacktrace.c