On Sun, Jul 14, 2019 at 11:49:15AM -0700, Paul E. McKenney wrote: > On Sun, Jul 14, 2019 at 05:48:00PM +0300, Dmitry Vyukov wrote: > > But short term I don't see any other solution than stop testing > > sched_setattr because it does not check arguments enough to prevent > > system misbehavior. Which is a pity because syzkaller has found some > > bad misconfigurations that were oversight on checking side. > > Any other suggestions? > > Keep the times down to a few seconds? Of course, that might also > fail to find interesting bugs. Right, if syzcaller can put a limit on the period/deadline parameters (and make sure to not write "-1" to /proc/sys/kernel/sched_rt_runtime_us) then per the in-kernel access-control should not allow these things to happen.
