From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Date: Mon, 14 Feb 2011 05:48:07 +0000 (+0900)
Subject: tracing/kprobe: Fix NULL pointer deref check
X-Git-Tag: v2.6.39-rc1~510^2~76
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0de4b34d466bae571b50f41c7296b85248205e35;p=pandora-kernel.git

tracing/kprobe: Fix NULL pointer deref check

Add NULL check for avoiding NULL pointer deref.
This bug has been introduced by:

  1ff511e35ed8: tracing/kprobes: Add bitfield type

which causes a null pointer dereference bug when kprobe-tracer
parses an argument without type.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110214054807.8919.69740.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
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