linux-kernel - Re: [PATCHv2] vsock: Fix blocking ops call in prepare_to

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Date:	Sat, 13 Feb 2016 05:59:40 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	labbott@...oraproject.org
Cc:	asarwade@...are.com, thellstrom@...are.com, jhansen@...are.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2] vsock: Fix blocking ops call in prepare_to_wait

From: Laura Abbott <labbott@...oraproject.org>
Date: Thu,  4 Feb 2016 10:50:45 -0800

> We receoved a bug report from someone using vmware:
 ...
> transport->stream_enqueue may call copy_to_user so it should
> not be called inside a prepare_to_wait. Narrow the scope of
> the prepare_to_wait to avoid the bad call. This also applies
> to vsock_stream_recvmsg as well.
> 
> Reported-by: Vinson Lee <vlee@...edesktop.org>
> Tested-by: Vinson Lee <vlee@...edesktop.org>
> Signed-off-by: Laura Abbott <labbott@...oraproject.org>

Applied.