On Wed, 20 Feb 2019 at 11:31, Rafał Miłecki <zajec5@xxxxxxxxx> wrote: > From: Rafał Miłecki <rafal@xxxxxxxxxx> > > While experimenting with firmware loading I ended up in a state of > firmware reporting shared RAM address 0x04000001. It was causing: > [ 94.448015] Unable to handle kernel paging request at virtual address cd680001 > due to reading out of the mapped memory. > > This patch adds some basic validation to avoid kernel crashes due to the > unexpected firmware behavior. For a reference for the further hackers. That has been caused by a BCMA_CORE_SYS_MEM core on my BCM4366/4 not being up.
