Hi,

On 1/25/21 1:40 PM, Johannes Berg wrote:

Hi,

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I don't have that much sympathy for a staging driver that's clearly
doing things differently than it was intended (the documentation states
that the function should be called only before wiphy_register(), not
during ndo_open). :-)

I completely understand and I already was worried that this might be
a staging-driver issue, which is why I mentioned this was with a
staging driver in the more detailed bug-report email.

I guess I missed that, but no worries.

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But OTOH, that fix to the driver is simple and looks correct to me since
it only ever has a static regdomain, and the notifier does the work of
applying it to the channels as well.

So I've given your fix a quick try and it leads to a NULL pointer deref.

Ouch. Oh. I see, that driver is *really* stupid, trying to get to the
wiphy from the adapter, but going through the wdev instead ... ouch.

Wow are these pointers a mess in that driver ... Something like this,
perhaps?

https://p.sipsolutions.net/4400d9a3b7b800bb.txt

Yes this fixes things, thank you that saves me from having to debug
the NULL ptr deref.

Do you want to submit this to Greg, or shall I (I've already
added it to me local tree as a commit with you as the author) ?

If you want me to submit it upstream, may I have / add your S-o-b
for this ?

Regards,

Hans