patch 46/47 causes NULL pointer deref on mt7921

[Kalle Valo]

Bert Karwatzki <spasswolf at web.de> writes:

> Am Mittwoch, dem 17.07.2024 um 17:25 +0200 schrieb Felix Fietkau:
>
>> On 17.07.24 16:38, Bert Karwatzki wrote:
>>
>> > So mvif->phy can be NULL at the start of mt7921_ipv6_addr_change. The early
>> > return in that case avoids the NULL pointer and mvif->phy has its usual value
>> > again on the next call to mt7921_ipv6_addr_change so Wifi is working again. I
>> > don't know how this could happen but perhaps you have an idea.
>>
>> This change should fix it: https://nbd.name/p/0747f54f
>> Please test.
>
> The BUG is still present in linux-6.11-rc1.

I'm not sure what's the status with this. There's one mt76 patch going
to v6.11-rc2:

https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=6557a28f3e3a54cff4f0dcdd1dfa649b26557ab3

But that looks to be a fix for a different problem, right? Felix, are
you planning to submit that 0747f54f as a proper patch? I could then
take it to wireless tree.

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