linux-kernel - Re: rtlwifi: rtl8192c_common: "BUG: KASAN: slab-out-of-bounds"

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Message-ID: <1486376979.14226.9.camel@sipsolutions.net>
Date:   Mon, 06 Feb 2017 11:29:39 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Larry Finger <Larry.Finger@...inger.net>,
        Dmitry Osipenko <digetx@...il.com>,
        Chaoming Li <chaoming_li@...lsil.com.cn>
Cc:     linux-wireless@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: rtlwifi: rtl8192c_common: "BUG: KASAN: slab-out-of-bounds"

On Sat, 2017-02-04 at 12:41 -0600, Larry Finger wrote:
> On 02/04/2017 10:58 AM, Dmitry Osipenko wrote:
> > Seems the problem is caused by rtl92c_dm_*() casting .priv to
> > "struct
> > rtl_pci_priv", while it is "struct rtl_usb_priv".
> 
> Those routines are shared by rtl8192ce and rtl8192cu, thus we need to
> make that 
> difference in cast to be immaterial. I think we need to move "struct 
> bt_coexist_info" to the beginning of both rtlpci_priv and
> rtl_usb_priv. Then it 
> should not matter.

I think you really should consider putting a struct rtl_common into
that or something, and getting rid of all the casting that causes this
problem to start with?

johannes