From: Omar Sandoval <osandov@osandov.com>
Date: Fri, 1 Aug 2014 17:14:06 +0000 (+0100)
Subject: ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instruction
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~199^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6bf755db4d5e7ccea61fb17727a183b9bd8945b1;p=pandora-kernel.git

ARM: 8124/1: don't enter kgdb when userspace executes a kgdb break instruction

The kgdb breakpoint hooks (kgdb_brk_fn and kgdb_compiled_brk_fn)
should only be entered when a kgdb break instruction is executed
from the kernel. Otherwise, if kgdb is enabled, a userspace program
can cause the kernel to drop into the debugger by executing either
KGDB_BREAKINST or KGDB_COMPILED_BREAK.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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