On (03/06/19 11:07), Mikulas Patocka wrote: > This bug only happens if we select large logbuffer (millions of > characters). With smaller log buffer, there are messages "** X printk > messages dropped", but there's no lockup. > > The kernel apparently puts 2 million characters into a console log buffer, > then takes some lock and than tries to write all of them to a slow serial > line. Do you run a preemtible kernel? -ss
