Hi Johannes, I forgot to mention, but the Wifi device I am using is: Intel(R) Wi-Fi 6 AX200 160MHz, REV=0x340 On Tue, Jun 11, 2024 at 10:54 AM Johannes Berg <johannes@xxxxxxxxxxxxxxxx> 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