linux-kernel - Re: [PATCH] staging: usbip: stub_dev: Fixed oops during removal of usbip

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Message-ID: <20120918074053.GL4587@mwanda>
Date:	Tue, 18 Sep 2012 10:40:53 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	navin patidar <navinp@...c.in>
Cc:	gregkh@...uxfoundation.org, mfm@...eddisk.com,
	devel@...verdev.osuosl.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: usbip: stub_dev: Fixed oops during removal of
 usbip_host

On Tue, Sep 18, 2012 at 09:30:06AM +0530, navin patidar wrote:
> stub_device_reset should set kernel thread pointers to NULL.
> so that at the time of usbip_host removal stub_shoutdown_connection
> doesn't try to kill kernel threads which are already killed.
> 

If you have the Oops output, that's always nice to put in the commit
message.

Why don't you set the pointers to NULL in stub_shutdown_connection()
since that's where you actually kill the threads.  Setting them to
NULL in stub_device_reset() will (sometimes) solve the problem but
it gives you a new problem of a resource leak.

regards,
dan carpenter

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