BarrSlides_FINAL_SCRUBBED.pdf?utm_content=bufferb9206&utm_medium=social&utm_source=twitter

THERE ARE DEFECTS IN TOYOTA’S ETCS2005 Camry L4 source code and in-vehicle tests confirm:! Some critical variables are not protected from corruptionMirroring was not always doneØ NASA didn’t know this (believed mirroring was always done)No hardware protection against bit flipsØ NASA didn’t know this (was told main CPU’s RAM had EDAC)! Sources of memory corruption are presentStack overflow can occurØ NASA didn’t know this (was told stack less than half used)There are software bugsØ NASA found bugs (and Barr Group has found others)Thus Toyota’s ETCS software can malfunction …14Barr St. John Report