linux-kernel - Re: gadgetfs broken since 7f7f25e8

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Message-ID: <20150307205132.GD29656@ZenIV.linux.org.uk>
Date:	Sat, 7 Mar 2015 20:51:32 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Alexander Holler <holler@...oftware.de>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Richard Weinberger <richard.weinberger@...il.com>,
	USB list <linux-usb@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, Felipe Balbi <balbi@...com>
Subject: Re: gadgetfs broken since 7f7f25e8

On Sat, Mar 07, 2015 at 09:03:51PM +0100, Alexander Holler wrote:
> Am 07.03.2015 um 12:23 schrieb Alexander Holler:
> > Am 04.03.2015 um 16:31 schrieb Alan Stern:
> > 
> >> check to see what those values actually were.  It's easy enough to fix
> >> up, though; revised patch below.
> > 
> > Thanks, in contrast to the patch from Al Viro that one applies.

Translation: it applies to mainline as well as to vfs.git#gadget +
ep_config_operations patch it's incremental to.

> And as I've just tested it, it isn't complete. ep_config_operations will
> be switched to ep_io_operations and suffers under the same problem of
> not having initially (aio_)read/(aio_)write since commit  7f7f25e8 (3.16).

Incremental patch does not deal with the problem handled by the patch
it is incremental to, film at 11...

FWIW, patches in vfs.git#gadget are fixing fairly obvious bugs - leaks and
use-after-free.
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