FreeBSD-stable-15-amd64-test - Build #900 - Still Unstable

FreeBSD-stable-15-amd64-test - Build #900 (9707d9f01e5cf4c3ff817f71a95e9ef4c85a1746) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/900/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/900/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/900/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)

e9df33a044ecd34f4b007f70a1416b0d0544321e by christos:
sound: Retire SD_F_VPC and related settings

2c21445c6cbbfcd9652d2db282ee6773cd4e0721 by christos:
sound: Use and lock only the appropriate channel in dsp_mmap_single()

f3d461cf322000f7784eb42be92282a14d148cfa by christos:
sound: Re-arrange a calculation in dsp_mmap_single()

0f4aac7ed5ae5b5cc8bd45597a91b7011067a6ef by christos:
sound: Handle CHN_F_MMAP_INVALID after cdev_pager_allocate()

9707d9f01e5cf4c3ff817f71a95e9ef4c85a1746 by christos:
sound tests: Add PROT_EXEC rejection test



The failed test cases:

1 tests failed.
FAILED:  sys.kern.aslr.aslr_setuid

Error Message:
/usr/src/tests/sys/kern/aslr.c:112: failed to find /sbin/ping text segment