FreeBSD-main-amd64-test - Build #27137 - Still Unstable

FreeBSD-main-amd64-test - Build #27137 (f999ffdce3813eb946f10999ccffb8275c324469) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27137/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27137/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/27137/console

Status explanation:
"Unstable" - some tests are suspected being broken by the following changes
"Still Unstable" - the failing test cases have not been fixed by these
                   following changes and this is a notification to note that
                   these changes have not been fully tested by the CI system

Change summaries:
(Those commits are likely but not certainly responsible)

c3f41c02c9a5bf45504af59c351f0ae336719753 by markj:
vmm: Simplify the VM_ALLOC_MEMSEG ioctl a bit

78a3a1e78ad8812bcf82e30b52ba2f21c49a3407 by markj:
amd64/vmm: Factor vcpu_notify_event() into two functions

3faad9e26018dfc0ab6da21a53c0310656187d7b by markj:
amd64/vmm: Remove useless global variables

e758074458df3b61773b7678ff47c4a835365d21 by markj:
vmm: Move the module load handler to vmm_dev.c

7377c87e467343e71b3e803708b98e04ea8e84bd by markj:
vmm: Consolidate VM name length checking

7214e0469234d90edd6deda4b181cd4862a9ace0 by markj:
amd64/vmm: Remove an unused function

c46e5dc65ba5c9666bb4452878e332dc49730843 by markj:
vmm: Move vm_maxcpu handling into MI code

f999ffdce3813eb946f10999ccffb8275c324469 by markj:
virtio: Fix polling in virtqueue_dequeue()



The failed test cases:

1 tests failed.
FAILED:  sys.net.if_tun_test.transient

Error Message:
Test case body timed out