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Re: [PATCHv5] mac80211: fix NULL pointer dereference in ieee80211_compatible_rates

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Johannes Berg wrote:
Thing is, I'm not totally convinced it is wrong to the code while it may
or may not be wrong...
Doesn't should be bss pinned int he bss list if you are associating to
it. If it's not there you don't have access to it's info It looks very
wrong to me.

Well, yes, it is a bit odd.

I think this patch should go in first as it
actually fixes the oops, and then we can discuss the merits of adding a
warning there separately. Maybe after we look a bit at the code and try
to figure out whether it can still happen after that patch from
Abhijeet.
I'm not sure if this patch is complete without this warning. What is
in the else statement is a hack and it should be obvious.

Considering that the message won't help us at all, why bother? We know
it's triggering, we know this might be a problem, and we know we can
only solve it by auditing the code. So why add a message that will get
us countless emails/complaints from people we cannot do anything about
anyway without doing the audit?

This argument could go on endlessly; however, it is clear that we need to settle on a patch and get it upstream ASAP! Now that mainline is broken, the urgency is _MUCH_ greater.

Larry
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