Hello,

Sorry. I missed your previous email. I agree that your solution is
better and cleaner.

Do you want me to submit a new patch?

Sincerely,
Bertold Van den Bergh

On Tue, Sep 8, 2015 at 6:03 PM, Johannes Berg <[email protected]> wrote:
> On Thu, 2015-08-13 at 11:09 +0200, Johannes Berg wrote:
>> On Wed, 2015-08-05 at 15:38 +0200, Bertold Van den Bergh wrote:
>> > The current implementation in ocb.c can cause a kernel oops when
>> > the
>> > interface is up, but no ocb has been joined. When data is received
>> > with the broadcast BSSID rx_no_sta is called. This function uses
>> > uninitialized variables because the join function has not yet been
>> > used.
>> >
>> > Signed-off-by: Bertold Van den Bergh <
>> > [email protected]>
>> > ---
>> >  net/mac80211/ocb.c | 3 +++
>> >  1 file changed, 3 insertions(+)
>> >
>> > diff --git a/net/mac80211/ocb.c b/net/mac80211/ocb.c
>> > index 573b81a..5da2bd3 100644
>> > --- a/net/mac80211/ocb.c
>> > +++ b/net/mac80211/ocb.c
>> > @@ -50,6 +50,9 @@ void ieee80211_ocb_rx_no_sta(struct
>> > ieee80211_sub_if_data *sdata,
>> >     struct sta_info *sta;
>> >     int band;
>> >
>> > +   if (!ifocb->joined)
>> > +           return;
>> >
>> Wouldn't it make more sense to put this check into
>> ieee80211_accept_frame() and, in addition to not doing any station
>> processing, simply dropping the frame completely? Like such:
>>
>
> Reminder? I'm not sure what to do with this patch - I don't
> particularly like processing the frame at all.
>
> johannes
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