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Re: [PATCHv2] mac80211: fix NULL pointer dereference in ieee80211_compatible_rates

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Dan Williams wrote:
On Sun, 2008-05-18 at 13:37 +0300, Tomas Winkler wrote:
Again, mac should rather solve the problem that we do not connect to
AP's that are not in the BSS list
Personally I would NACK this as it's just hiding  the real problem

Ugh; is that what's happening?  If the AP isn't in the BSS list of the
card, then the card shouldn't be connecting to it.  It should have been
probe-scanned already and thus exist in the BSS list, right?

Dan

The other issue is that we call ieee80211_rx_bss_put(dev, bss); before
this call in ieee80211_send_assoc.

This AP certainly should have been in the BSS list. As I stated in the original post, the system had been connected to that AP for about 18 hours before the NULL bss NULL event occurred.

Clearly the sequence of events is improbable and it may be some time before it happens again. What diagnostic information would be useful to capture if/when it occurs? Is there any other location that I should monitor?

Larry
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