What were you trying to do that didn't work?

Set up the shm_size in containers.conf to a certain value and check the value inside a container. The shm value in container is not the same as the value we set. But it was added to 64k based on the value we set in configure files. For exampels:
shm_size value from /dev/shm inside the container
192k 192k
192k-255k 256k
256k 256k

What is the impact of this issue to you?

The shm size inside container can only enlarged with 64k values but the value can not be the same as we set in containers.conf

Please provide the package NVR for which the bug is seen:

buildah-1.41.4-2.el10_1.ppc64le

How reproducible is this bug?:

100%

Steps to reproduce

1. Run system test “containers.conf /dev/shm test” The test will failed with error message as the shm_size in test is using 200k but we get 256k inside the container

Expected results

/dev/shm should be the same value of shm_size in containers.conf

Actual results

The value are different.