linux-kernel - Re: [BUG] ext4 trace events cause NULL pointer dereferences

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Date:	Fri, 23 Jul 2010 17:19:04 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Theodore Tso <tytso@....edu>
CC:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Christoph Hellwig <hch@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-ext4@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [BUG] ext4 trace events cause NULL pointer dereferences

Theodore Tso wrote:
> On Jul 23, 2010, at 1:47 AM, KOSAKI Motohiro wrote:
> 
>> I'm not familiar ext4 so much. but you patch seems very nice!
>> thank you :)
> 
> So, can someone confirm that this fixes the NULL pointer dereference?  The patch itself makes sense, and it doesn't change the tracepoint output, so I'm inclined to include it, but I haven't been able to reproduce the failure myself using the reproduction recipe given at the beginning of this thread --- and I'd feel much better if someone who has been able to reproduce the crash can confirm this fixes things for them.
> 

Thanks for the fix. I'll test the patch after the weekend.

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