selftests: cgroup: Test open-time cgroup namespace usage for migration checks
authorTejun Heo <tj@kernel.org>
Thu, 6 Jan 2022 21:02:29 +0000 (11:02 -1000)
committerTejun Heo <tj@kernel.org>
Thu, 6 Jan 2022 21:02:29 +0000 (11:02 -1000)
commitbf35a7879f1dfb0d050fe779168bcf25c7de66f5
treec02d6cfa826fd93e963ce179af5a611718480e65
parent613e040e4dc285367bff0f8f75ea59839bc10947
selftests: cgroup: Test open-time cgroup namespace usage for migration checks

When a task is writing to an fd opened by a different task, the perm check
should use the cgroup namespace of the latter task. Add a test for it.

Tested-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
tools/testing/selftests/cgroup/test_core.c