linux-kernel - [tip:perf/core] trace: strlen() return doesn't account for the NULL

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Message-ID: <tip-24a461d537f49f9da6533d83100999ea08c6c755@git.kernel.org>
Date:	Fri, 23 Jul 2010 12:11:58 GMT
From:	tip-bot for Dan Carpenter <error27@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	rostedt@...dmis.org, error27@...il.com, tglx@...utronix.de
Subject: [tip:perf/core] trace: strlen() return doesn't account for the NULL

Commit-ID:  24a461d537f49f9da6533d83100999ea08c6c755
Gitweb:     http://git.kernel.org/tip/24a461d537f49f9da6533d83100999ea08c6c755
Author:     Dan Carpenter <error27@...il.com>
AuthorDate: Sat, 10 Jul 2010 12:06:44 +0200
Committer:  Steven Rostedt <rostedt@...dmis.org>
CommitDate: Thu, 22 Jul 2010 14:56:41 -0400

trace: strlen() return doesn't account for the NULL

We need to add one to the strlen() return because of the NULL
character.  The type->name here generally comes from the kernel and I
don't think any of them come close to being MAX_TRACER_SIZE (100)
characters long so this is basically a cleanup.

Signed-off-by: Dan Carpenter <error27@...il.com>
LKML-Reference: <20100710100644.GV19184@...ker>
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 kernel/trace/trace.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index f7488f4..cacb6f0 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -739,7 +739,7 @@ __acquires(kernel_lock)
 		return -1;
 	}
 
-	if (strlen(type->name) > MAX_TRACER_SIZE) {
+	if (strlen(type->name) >= MAX_TRACER_SIZE) {
 		pr_info("Tracer has a name longer than %d\n", MAX_TRACER_SIZE);
 		return -1;
 	}
--
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