FreeBSD-main-amd64-test - Build #28844 - Still Unstable

FreeBSD-main-amd64-test - Build #28844 (d0384f50dad25d3358d76f7556969ea1d515ba68) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/28844/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/28844/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/28844/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)

e1a84b7708c2514769625c2af6c5034694013b6a by kib:
execve_block(): a mechanism for mutual exclusion with execve() on the

450fe67d19eb2ea8e27109214ff21064fdcf808c by kib:
execve_block_pass(9): a helper to wait for the execblock to pass

e1b0d051bbf7e4e730470cbd6622f71a639834c3 by kib:
proc: Allow to make proc_rwmem() operate on a consistent address space

a22c044cce41864a32af6b8281a3c416a2664d7f by kib:
kern_proc.c: ensure stability of the vmspace we read the strings from

5fe6e08d2db56b530f0df2903ef24cfabab7b8ea by kib:
kern_proc.c: ensure stability of the vmspace for sysctl kern.proc.vmmap

31fa677e4af00b795bf671847b4dc72960c90f14 by kib:
kern_proc.c: ensure stability of the vmspace for sysctl

80626f34ee985671bb8c60ee986b89587b7a1511 by kib:
kern_proc.c: make kern.proc.osrel atomic

8b5abd9027b8b1f6290c756730ee3adebed007f4 by kib:
kern_proc.c: disallow execve around sysctl kern.proc.kstacks

5a91fa5a7656c99e527fe7e6f6bf6bd9e85ab589 by kib:
kern_proc.c: disallow execve around sysctl kern.proc.rlimit

79b384bd8fdff4869ce4799edb0342ff5c25b6fa by kib:
kern_event: block the target process from execing for sysctl

836749817036b90b60af0584fa21f2d9dbd60ff7 by kib:
kern_resource.c: disallow execve around sysctl kern.proc.rlimitusage

6a572920f251ac8ac6a80a55d4d039736ea7dd65 by kib:
kern_procctl(PROC_WX_MAPPINGS_PERMIT): ensure stability of the target

e41c28e67fac9cd22a85b160c5c9d0477ed03600 by kib:
linux_prlimit(): block execve for the target

4c0a0909f928baac982b7de4bfa5b5ca7de5291a by kib:
pfs_readdir(): block the target process from execing

a4993bac41350e85bc9affb862d2974a1a09bb5e by kib:
pseudofs: ensure that the target process vmspace is stable for

5db31f1b47b586a5091eb41fc957236f28b78dba by kib:
procfs, linprocfs: ensure target process vmspace stability

d0384f50dad25d3358d76f7556969ea1d515ba68 by kib:
sys_set*id(9): wait for the execblocks to pass



The failed test cases:

3 tests failed.
FAILED:  sys.net.if_tun_test.basic

Error Message:
atf-check failed; see the output of the test for details

FAILED:  sys.netinet6.frag6.frag6_03.frag6_03

Error Message:
atf-check failed; see the output of the test for details

FAILED:  sys.kern.aslr.aslr_setuid

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