FreeBSD-main-amd64-test - Build #20782 - Still Unstable

FreeBSD-main-amd64-test - Build #20782 (56070dd2e4df70e4de2a10c7ace684ceb8b0f0bd) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/20782/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/20782/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/20782/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)

5a1de9c25defdc0e5d08150d5b1877ac117f43e4 by jhb:
Add simple kyua tests for the mod* system calls.

9af41803cbe5cf88e145e44cc28d8db2642a0e90 by jhb:
Use vnsz2log directly in assertion on its relation to sizeof(struct

0b25cbc79d384ab2b204ff389ea7df99e06a25e6 by jhb:
Fix the size returned for NT_FPREGSET.

56070dd2e4df70e4de2a10c7ace684ceb8b0f0bd by mav:
Improve timeout precision of pthread_cond_timedwait().



The failed test cases:

2 tests failed.
FAILED:  sys.netpfil.pf.ether.mac

Error Message:
Failed to set PF rules in alcatraz

FAILED:  sys.file.closefrom_test.main

Error Message:
TAP test program yielded invalid data: Load of '/tmp/kyua.XbwqeM/1524/stdout.txt' failed: Reported plan differs from actual executed tests