[CRIU] few remaining s390 zdtm failures (for me)

[Adrian Reber]

Running on RHEL s390x I have few zdtm test cases failing which do not
fail on x86_64 and ppc64le.

  * zdtm/static/vdso02(ns)
  * zdtm/static/stopped(h)
  * zdtm/static/stopped01(h)
  * zdtm/static/stopped02(h)
  * zdtm/static/stopped12(ns)

Error messages are all the same like:

(01.503563) cg: Set 1 is criu one
(01.503686) Seized task 24, state 1
(01.503715) Collected (4 attempts, 0 in_progress)
(01.503728) Seized task 25, state 0
(01.503912) Error (compel/src/lib/infect.c:180): SEIZE 25: task not stopped after seize
(01.503921) Error (compel/src/lib/infect.c:309): Unable to detach from 25: No such process

All other tests are working. I guess I might be missing an
s390x related backport on my 3.10.x kernel.

Any ideas which backports might be missing? Or what I need to look for?

		Adrian