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

[Larry Finger]

On 02/06/2017 04:29 AM, Johannes Berg wrote:
> 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?

The fix you suggest is prepared and will be submitted soon. As it is much more 
invasive with ~150 insertions and ~160 deletions, I decided not to have it be 
the one that is pushed to all stable kernels from 4.0 onward.

Larry