[PATCH v4] sched: check user input value of sysctl_sched_time_avg

2017-09-04 Thread Ethan Zhao
System will hang if user set sysctl_sched_time_avg to 0 by [root@XXX ~]# sysctl kernel.sched_time_avg_ms=0 Stack traceback for pid 0 0x883f6406c600 0 0 1 3 R 0x883f6406cf50 *swapper/3 883f7ccc3ae8 0018 810c4dd0 00017800 883f7ccc3d78

[PATCH v4] sched: check user input value of sysctl_sched_time_avg

2017-09-04 Thread Ethan Zhao
System will hang if user set sysctl_sched_time_avg to 0 by [root@XXX ~]# sysctl kernel.sched_time_avg_ms=0 Stack traceback for pid 0 0x883f6406c600 0 0 1 3 R 0x883f6406cf50 *swapper/3 883f7ccc3ae8 0018 810c4dd0 00017800 883f7ccc3d78