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

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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





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