[PATCH v3 0/4] scftorture: Avoid kfree from IRQ context.

[Sebastian Andrzej Siewior]

Hi,

Paul reported kfree from IRQ context in scftorture which is noticed by
lockdep since the recent PROVE_RAW_LOCK_NESTING switch.

The last patch in this series adresses the issues, the other things
happened on the way.

v2…v3:
  - The clean up on module exit must not be done with thread numbers.
    Reported by Boqun Feng.
  - Move the clean up on module exit prior to torture_cleanup_end().
    Reported by Paul.

v1…v2:
  - Remove kfree_bulk(). I get more invocations per report without it.
  - Pass `cpu' to scf_cleanup_free_list in scftorture_invoker() instead
    of scfp->cpu. The latter is the thread number which can be larger
    than the number CPUs leading to a crash in such a case. Reported by
    Boqun Feng.
  - Clean up the per-CPU lists on module exit. Reported by Boqun Feng.

Sebastian