On 2019/12/13 19:00, Dmitry Vyukov wrote: > Easier said than done. "normal user of the serial port" is not really > a thing in Linux, right? You either have CAP_SYS_ADMIN or not, that's > not per-device... > As far as I remember +Tetsuo proposed a config along the lines of > "restrict only things that legitimately cause damage under a fuzzer > workload", e.g. freezing filesystems, disabling console output, etc. > This may be another candidate. But I can't find where that proposal is > now. That suggestion got no response for two months. https://lkml.kernel.org/r/3e4e2b6b-7828-54ab-cf28-db1a396d7e20@xxxxxxxxxxxxxxxxxxx Unless we add such kernel config option to upstream kernels, it will become a whack-a-mole game.