Andreas Kling 3e30d9bc99 Kernel: Make ProcessGroup a ListedRefCounted and fix two races ...

This closes two race windows:

- ProcessGroup removed itself from the "all process groups" list in its
  destructor. It was possible to walk the list between the last unref()
  and the destructor invocation, and grab a pointer to a ProcessGroup
  that was about to get deleted.

- sys$setsid() could end up creating a process group that already
  existed, as there was a race window between checking if the PGID
  is used, and actually creating a ProcessGroup with that PGID.

2023-04-05 11:37:27 +02:00

1.8 KiB

Raw Blame History

View Raw