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

podman checkpoint (which uses criu)

What is the impact of this issue to you?

n/a

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

criu-3.19-9.el10.x86_64

How reproducible is this bug?:

always

Steps to reproduce

1. sudo podman run --name cpt -d quay.io/libpod/testimage:20241011 sh -c 'while :;do cat /proc/uptime; sleep 10; done'
2. sudo podman container checkpoint cpt

Expected results

Successful checkpoint.

Actual results

2025-05-23T01:31:21.952558Z: CRIU checkpointing failed -52.  Please check CRIU logfile /var/lib/containers/storage/overlay-containers/3ed4d6f8282f9f15e3d023fd328fc2d26d334a8214669f7edba9535be2b5b560/userdata/dump.log: Invalid exchange
Error: `/usr/bin/crun checkpoint --image-path /var/lib/containers/storage/overlay-containers/3ed4d6f8282f9f15e3d023fd328fc2d26d334a8214669f7edba9535be2b5b560/userdata/checkpoint --work-path /var/lib/containers/storage/overlay-containers/3ed4d6f8282f9f15e3d023fd328fc2d26d334a8214669f7edba9535be2b5b560/userdata 3ed4d6f8282f9f15e3d023fd328fc2d26d334a8214669f7edba9535be2b5b560` failed: exit status 1

Analysis:

This is caused by the backport of the kernel patch https://github.com/torvalds/linux/commit/e93d2521b27f0439872dfa4e4b92a9be6d73496f, here's a kernel changelog excerpt:

Tue Apr 22 2025 Julio Faracco jfaracco@redhat.com [6.12.0-76.el10]
....
x86/vdso: Split virtual clock pages into dedicated mapping (Luiz Capitulino) RHEL-78135

Now, this is fixed in criu-4.1 here: https://github.com/checkpoint-restore/criu/pull/2539

So, the fix is either to bump criu to v4.1, or backport the patch from https://github.com/checkpoint-restore/criu/pull/2539

This is the same issue as https://github.com/checkpoint-restore/criu/issues/2532