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From: Fabio Estevam <festevam@gmail.com>
Date: Tue, 11 Jun 2024 11:32:45 -0300
Message-ID: <CAOMZO5CYDsh70u3To7HYXVki_MzzhFyCCHkigt_Es7o_+XG3oA@mail.gmail.com>
Subject: Re: iwlwifi: Regression after migrating to 6.6.32
To: Johannes Berg <johannes@sipsolutions.net>
Cc: miriam.rachel.korenblit@intel.com, kvalo@kernel.org, 
	Jakub Kicinski <kuba@kernel.org>, linux-wireless <linux-wireless@vger.kernel.org>, 
	linux-kernel <linux-kernel@vger.kernel.org>
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Hi Johannes,

I forgot to mention, but the Wifi device I am using is:

Intel(R) Wi-Fi 6 AX200 160MHz, REV=3D0x340

On Tue, Jun 11, 2024 at 10:54=E2=80=AFAM Johannes Berg
<johannes@sipsolutions.net> wrote:

> > [    5.038174] rxb->offset is 0 trans_pcie->rx_buf_bytes is 4096
>
> so that looks pretty normal?
>
> Might be useful to see rx->page_dma too, supported_dma_mask should be
> 4095 or 2047 depending on the device, but I'm not sure how you could end
> up with a DMA mapping for a page that's not at least 11 bit aligned?

Here it goes:

[    4.344218] rxb->offset is 0 trans_pcie->rx_buf_bytes is 4096
rxb->page_dma is 4215433216 trans_pcie->supported_dma_mask is 4095
[    4.355936] WARNING: CPU: 2 PID: 135 at
/drivers/net/wireless/intel/iwlwifi/pcie/rx.c:269
iwl_pcie_rxmq_restock.part.0+0x15c/0x168 [iwlwifi]

I don't know what a typical rxb->page_dma should be.

Thanks