Hi Jakub Kicinski, > -----Original Message----- > Subject: Re: [PATCH net-next v3 00/14] Add functional support for Gigabit > Ethernet driver > > On Tue, 12 Oct 2021 17:35:59 +0100 Biju Das wrote: > > set_feature patch will send as separate RFC patch along with > > rx_checksum patch, as it needs further discussion related to HW > checksum. > > Is this part relating to the crash you observed because of TCP csum > offload? Yes, you are correct. Sergey, suggested use R-Car RX-HW checksum with RCSC/RCPT and But the TOE gives either 0x0 or 0xffff as csum output and feeding this value to skb->csum lead to kernel crash. Regards, Biju > > I'm trying to understand the situation before and after this series. > What makes the crash possible to trigger?