Re: [patch 3/6] posix-cpu-timers: Restrict timer_create() permissions

2019-09-20 Thread Frederic Weisbecker
On Thu, Sep 05, 2019 at 02:03:42PM +0200, Thomas Gleixner wrote: > Right now there is no restriction at all to attach a Posix CPU timer to any > process in the system. Per thread CPU timers are limited to be created by > threads in the same thread group. > > Timers can be used to observe activity

[patch 3/6] posix-cpu-timers: Restrict timer_create() permissions

2019-09-05 Thread Thomas Gleixner
Right now there is no restriction at all to attach a Posix CPU timer to any process in the system. Per thread CPU timers are limited to be created by threads in the same thread group. Timers can be used to observe activity of tasks and also impose overhead on the process to which they are attached