linux-kernel - RE: [PATCH] mei: bus: type promotion bug in mei_nfc_if

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Date:   Mon, 9 Jul 2018 11:36:21 +0000
From:   "Winkler, Tomas" <tomas.winkler@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
CC:     "Usyskin, Alexander" <alexander.usyskin@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH] mei: bus: type promotion bug in mei_nfc_if_version()

> 
> On Wed, Jul 04, 2018 at 12:34:49PM +0300, Dan Carpenter wrote:
> > We accidentally removed the check for negative returns without
> > considering the issue of type promotion.  The "if_version_length"
> > variable is type size_t so if __mei_cl_recv() returns a negative then
> > "bytes_recv" is type promoted to a high positive value and treated as
> > success.
> >
> > Fixes: 582ab27a063a ("mei: bus: fix received data size check in NFC
> > fixup")
> > Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> 
> Didn't apply to my tree at all :(

I will rework this, anyhow I would prefer if you can wait for my signoff before applying, 
I believe we are reasonably responsive. 
Thanks
Tomas