> From: Luis Felipe Dominguez Vega <lfdominguez@xxxxxxxx>
>
> In commit 33511b157bbcebaef853cc1811992b664a2e5862 ("rtlwifi: add support to
> send beacon frame"), the mechanism for sending beacons was established. That
> patch works correctly for rtl8192cu, but there is a possibility of getting
> the following warnings in the PCI drivers:
>
> WARNING: CPU: 1 PID: 2439 at net/mac80211/driver-ops.h:12
> ieee80211_bss_info_change_notify+0x179/0x1d0 [mac80211]()
> wlp5s0: Failed check-sdata-in-driver check, flags: 0x0
>
> The warning is followed by a NULL pointer dereference as follows:
>
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000006
> IP: [<ffffffffc073998e>] rtl_get_tcb_desc+0x5e/0x760 [rtlwifi]
>
> This problem was reported at http://thread.gmane.org/gmane.linux.kernel.wireless.general/138645,
> but no solution was found at that time.
>
> The problem was also reported at https://bugzilla.kernel.org/show_bug.cgi?id=9744
> and this solution was developed and tested there.
>
> The USB driver works with a NULL final argument in the adapter_tx() callback;
> however, the PCI drivers need a struct rtl_tcb_desc in that position.
>
> Fixes: 33511b157bbc ("rtlwifi: add support to send beacon frame.")
> Signed-off-by: Luis Felipe Dominguez Vega <lfdominguez@xxxxxxxx>
> Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
> Cc: Stable <stable@xxxxxxxxxxxxxxx> [3.19+]
Thanks, applied to wireless-drivers.git.
But I added Fixes line to make it clear what commit this fixes.
Kalle Valo
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