The following test failed in the Valhalla CI:

sun/security/util/HexDumpEncoderTests.java

Here's a snippet from the log file:

#section:main
----------messages:(9/349)----------
command: main HexDumpEncoderTests
reason: Assumed action based on file name: run main HexDumpEncoderTests
started: Thu Feb 19 12:13:48.832 UTC 2026
Mode: agentvm
Agent id: 37
Process id: 1560775
Additional exports to unnamed modules from @modules: java.base/sun.security.util
finished: Thu Feb 19 12:13:49.282 UTC 2026
elapsed time (seconds): 0.45
----------configuration:(15/1975)----------

<snip>

----------System.err:(143/9464)----------
java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: Encoding UTF-32LE expected:
Cert Encoded With Encode Buffer: 0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0060: 00 00 00 00 ....


Cert Encoded With Encode: 0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0060: 00 00 00 00
 but was: [0.002s][warning][perf,memops] Cannot use file /tmp/hsperfdata_mach5-run/1579848 because it is locked by another process (errno = 11)

It appears that the hsperfdata warning mesg is screwing up
the expected output of the test. The failure did not reproduce
in the next Tier2 so I've added the intermittent label.