linux-kernel - Re: [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in gntdev

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Message-ID: <55DEC379.9070806@suse.cz>
Date:	Thu, 27 Aug 2015 09:59:53 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	Marek Marczykowski-Górecki 
	<marmarek@...isiblethingslab.com>
Cc:	Luis Henriques <luis.henriques@...onical.com>,
	stable@...r.kernel.org, linux-kernel@...r.kernel.org,
	David Vrabel <david.vrabel@...rix.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in
 gntdev_release()

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On 08/25/2015, 04:08 PM, Marek Marczykowski-Górecki wrote:
>> Hmm, but e.g. gntdev_put_map -> gntdev_free_map ->
>> free_xenballooned_pages -> mutex_lock
>> 
>> means sleep inside atomic, right?
> 
> Indeed, you're probably right. But I haven't hit that problem
> ever...

Ok, so I dropped 30b03d05e07467b8c6ec683ea96b5bffcbcd3931 from 3.12.

thanks,
- -- 
js
suse labs
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