runc "checkpoint --lazy-pages and restore" test failed

[kolyshkin]

I have only seen it once (here) but guess it's worth filing just to keep track of things.

Here's the relevant part of a test log:

ok 12 checkpoint and restore 
ok 13 checkpoint and restore (cgroupns) # skip test requires cgroups_v1
ok 14 checkpoint --pre-dump and restore
not ok 15 checkpoint --lazy-pages and restore
# (from function `fail' in file tests/integration/helpers.bash, line 275,
#  from function `runc_restore_with_pipes' in file tests/integration/checkpoint.bats, line 84,
#  in test file tests/integration/checkpoint.bats, line 208)
#   `runc_restore_with_pipes ./image-dir test_busybox_restore --lazy-pages' failed
# runc spec (status=0):
# 
# uffd-noncoop is supported
# runc state test_busybox (status=0):
# {
#   "ociVersion": "1.0.2-dev",
#   "id": "test_busybox",
#   "pid": 29402,
#   "status": "running",
#   "bundle": "/tmp/busyboxtest",
#   "rootfs": "/tmp/busyboxtest/rootfs",
#   "created": "2021-01-15T23:01:28.208600788Z",
#   "owner": ""
# }
# __runc restore test_busybox_restore failed (status: 1)
# time="2021-01-15T23:01:28Z" level=error msg="criu failed: type NOTIFY errno 0\nlog file: image-dir/restore.log"
# CRIU restore log errors (if any):
# (00.074834) 29463 (native) is going to execute the syscall 11, required is 15
# (00.074843) 29463 was trapped
# (00.074845) `- Expecting exit
# (00.074852) 29463 was trapped
# (00.074855) 29463 (native) is going to execute the syscall 18446744073709551615, required is 15
# (00.074862) Error (compel/src/lib/infect.c:1513): Task 29463 is in unexpected state: f7f
# (00.074878) Error (compel/src/lib/infect.c:1520): Task stopped with 15: Terminated
# (00.075508) Error (criu/cr-restore.c:2416): Can't stop all tasks on rt_sigreturn
# (00.075511) Error (criu/cr-restore.c:2454): Killing processes because of failure on restore.
# The Network was unlocked so some data or a connection may have been lost.
# (00.077109) Error (criu/mount.c:3396): mnt: Can't remove the directory /tmp/.criu.mntns.hDc1hY: No such file or directory
# (00.077116) Error (criu/cr-restore.c:2483): Restoring FAILED.
# runc restore failed
ok 16 checkpoint and restore in external network namespace
ok 17 checkpoint and restore with container specific CRIU config

In particular, this line looks shady:

(00.074855) 29463 (native) is going to execute the syscall 18446744073709551615, required is 15

This was criu-3.15 running on Fedora 33 (amd64) running in a vagrant virtualbox VM on Mac OS X. Sorry I could not provide more details at the moment.

[github-actions]

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