(Feel free to update this bug's summary to be more specific.)
Component Readiness has found a potential regression in the following test:

Node process segfaulted

Significant regression detected.
Fishers Exact probability of a regression: 100.00%.
Test pass rate dropped from 100.00% to 91.18%.

Sample (being evaluated) Release: 4.21
Start Time: 2025-10-30T00:00:00Z
End Time: 2025-11-06T12:00:00Z
Success Rate: 91.18%
Successes: 31
Failures: 3
Flakes: 0
Base (historical) Release: 4.20
Start Time: 2025-10-07T00:00:00Z
End Time: 2025-11-06T12:00:00Z
Success Rate: 100.00%
Successes: 429
Failures: 0
Flakes: 0

View the test details report for additional context.

ex run: https://prow.ci.openshift.org/view/gs/test-platform-results/logs/periodic-ci-openshift-release-master-nightly-4.21-e2e-metal-ipi-ovn-ipv6-techpreview/1983882083080081408

Looking at worker 1 node,

Oct 30 16:01:32.570513 worker-1.ostest.test.metalkube.org kernel: slapd[212916]: segfault at 7f2e8c919088 ip 000055a986b06b79 sp 00007f2e8a87dd00 error 6 in slapd[55a986a3b000+15c000] likely on CPU 0 (core 0, socket 0)
Oct 30 16:01:32.570814 worker-1.ostest.test.metalkube.org kernel: Code: 48 01 ee 5d 41 5c e9 86 6c f3 ff 66 0f 1f 44 00 00 f3 0f 1e fa 55 53 48 89 fb 48 83 ec 08 8b 6f 08 e8 cb 75 f3 ff 39 c5 75 07 <c7> 43 08 00 00 00 00 48 83 c4 08 5b 5d c3 66 0f 1f 84 00 00 00 00

https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/test-platform-results/logs/periodic-ci-openshift-release-master-nightly-4.21-e2e-metal-ipi-ovn-ipv6-techpreview/1983882083080081408/artifacts/e2e-metal-ipi-ovn-ipv6-techpreview/gather-extra/artifacts/nodes/worker-1.ostest.test.metalkube.org/