Re: Lockdep warning in iwl_pcie_rx_handle()

Johannes Berg
2021-03-02T07:09:09Z

Hi Jiri,

> I am getting the splat below with Linus' tree as of today (5.11-rc1,
> fe07bfda2fb). I haven't started to look into the code yet, but apparently
> this has been already reported by Heiner here:
>
> https://www.spinics.net/lists/linux-wireless/msg208353.html
>
> so before I start digging deep into it (the previous kernel this
> particular machine had is 5.9, so I'd rather avoid lenghty bisect for now
> in case someone has already looked into it and has ideas where the problem
> is), I thought I'd ask whether this has been root-caused elsewhere
> already.

Yeah, I'm pretty sure we have a fix for this, though I'm not sure right
now where it is in the pipeline.

It's called "iwlwifi: pcie: don't add NAPI under rxq->lock" but right
now I can't find it in any of the public archives.

johannes