linux-kernel - Re: [PATCH] trace-cmd: Add check for truncated files

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Message-ID: <1308684420.531.14.camel@gandalf.stny.rr.com>
Date:	Tue, 21 Jun 2011 15:27:00 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Vaibhav Nagarnaik <vnagarnaik@...gle.com>
Cc:	Michael Rubin <mrubin@...gle.com>,
	David Sharp <dhsharp@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] trace-cmd: Add check for truncated files

On Mon, 2011-06-20 at 17:19 -0700, Vaibhav Nagarnaik wrote:
> If the trace data file that is being read is truncated, mmap'ing its
> non-existent page does not give any error. When the page is read, the
> process dies with a SIGBUS.
> 
> This patch adds a file size check while initializing the trace data and
> makes sure that the file size matches the expected size; otherwise an
> error is returned.

Thanks Vaibhav,

I'll queue this up.

-- Steve


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