FreeBSD-main-amd64-test - Build #24680 - Still Unstable

FreeBSD-main-amd64-test - Build #24680 (6b6914c1e21b625503a1b8d8d5cfdfbc4c6a6acd) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24680/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24680/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24680/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)

18d87fe4fe3b310796e138855016678453140423 by christos:
snd_uaudio: provide information about the device name and attached

837cd192ebf2d0d4f5ded8883403ef11e6fa6438 by christos:
sound: remove PCM_KLDSTRING() and fix status strings

06a4376346e55d1c7aefe7a48063dddc4d1da9b9 by christos:
snd_uaudio: prefix module declaration with "snd_"

3a79c3ac8aa3c548aab9ad38acc4f480ab9e7a5b by christos:
sound: add missing modules to snd_driver

ebc9b69c77850d3b5a23473cd9a889b8c6d8685a by christos:
pcm.4: mention snd_uaudio auto-load

45cd29412eadbb0e8c40590a94b10663addac17a by christos:
usb: use only usb_devinfo() in device_set_usb_desc()

6b6914c1e21b625503a1b8d8d5cfdfbc4c6a6acd by christos:
subr_bus: introduce device_set_descf() and modify allocation logic



The failed test cases:

2 tests failed.
FAILED:  sys.kern.shutdown_dgram.unblock

Error Message:
Test case body timed out

FAILED:  sys.kern.unix_passfd_dgram.send_and_shutdown

Error Message:
/usr/src/tests/sys/kern/unix_passfd_test.c:431: openfiles() == nfiles - 1 not met