On 16.09.2022 06:14:58, Jacob Kroon wrote: > What I do know is that if I revert commit: > > "can: c_can: cache frames to operate as a true FIFO" > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=387da6bc7a826cc6d532b1c0002b7c7513238d5f > > then everything looks good. I don't get any BUG messages, and the host > has been running overnight without problems, so it seems to have fixed > the network interface lockup as well. Jacob, after this mail, I'll send 2 patches. One tries to disable the cache feature for C_CAN cores, the other shuts a potential race window. Please test both patches, but only apply one of them at a time. :) regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |