15 Mar
2022
15 Mar
'22
7:25 a.m.
On Tuesday, March 15th, 2022 at 08:13, Dave Airlie airlied@gmail.com wrote:
Just one thing comes to mind reading this, racy PID reuse.
process 1234 does something bad to GPU. process 1234 dies in parallel to sysfs notification being sent. other process 1234 reuses the pid new process 1234 gets destroyed by receiver of sysfs notification.
This is a more general problem with PIDs. One solution is pidfd.