linux-kernel - Re: Possible race condition in usb-serial.c

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Message-ID: <20061220204354.GA4039@kroah.com>
Date:	Wed, 20 Dec 2006 12:43:54 -0800
From:	Greg KH <greg@...ah.com>
To:	J <jhnlmn@...oo.com>
Cc:	linux-kernel@...r.kernel.org, linux-usb-devel@...ts.sourceforge.net
Subject: Re: Possible race condition in usb-serial.c

On Wed, Dec 20, 2006 at 11:32:31AM -0800, J wrote:
> Thank you for the explanation.
> 
> > serial_close is safe because serial_disconnect
> > lowers the refcount
> 
> Sorry, I meant serial_open, as in my original example.
> 
> I am currently trying to fix a legacy 2.4 based USB
> driver and I am having various races, 
> serial_open/usb_serial_disconnect is the most lively.
> I am not asking your help in fixing this old 2.4 junk
> (in fact I already fixed it using a global semaphore
> to protect serial_table).

Which usb-serial driver are you having problems with?  What is the oops
trace?  What version of the 2.4 kernel are you using?

And why are you taking the linux-usb-devel list out of the cc:?  :)

thanks,

greg k-h
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