Re: [BUG] iwlwifi: card unusable after firmware crash

[Emmanuel Grumbach]

Hi,

> Hi, again,
>
> I haven't tested any patch or bisected, but I have another data point.
> I built and tested Linux 5.8.18, with the same firmware, and it is
> working correctly. I reduced the test case to just rfkilling the
> connection, which showed the register dump immediately (before that I
> was using the airplane toggle on the keyboard, which isn't working
> correctly, it disables and immediately reenables the radio, for some
> unfathomable reason).
> So, now I'm inclined to believe this is some sort of race condition
> between rfkill and pending transactions.

Which also means it's not a regression.
You can add a dump_stack() in the function that dumps the registers to
get a clue.