Created attachment 264584 [details] kyua test report The 'sys/netinet/tcp_hpts_test.py' tests cause a kernel panic in CI: TCP HPTS started 2 ((unbounded)) swi interrupt threads sys/netinet/tcp_hpts_test.py:TestTcpHpts::test_concurrent_operations -> failed: /usr/tests/atf_python/sys/netlink/netlink.py:376: ValueError [0.274s] sys/netinet/tcp_hpts_test.py:TestTcpHpts::test_cpu_assignment -> passed [0.204s] sys/netinet/tcp_hpts_test.py:TestTcpHpts::test_deferred_requests -> failed: /usr/tests/atf_python/sys/netlink/netlink.py:376: ValueError [0.258s] sys/netinet/tcp_hpts_test.py:TestTcpHpts::test_direct_wake_mechanism -> Sleeping on "-" with the following non-sleepable locks held: exclusive sleep mutex tcp_hpts_lck (hpts) r = 0 (0xfffff8007a659600) locked @ /home/siva/src/fbsdsrcgit/sys/netinet/tcp_hpts_test.c:1467 I have reproduced this error using Bricoler with 100 runs for good measure and attached the failing test report in this bug: $ bricoler run freebsd-src-regression-suite --param freebsd-src:url=/usr/src --param freebsd-src:branch= --param freebsd-src-regression-suite:hypervisor=bhyve --param freebsd-src-regression-suite:memory=4096 --param freebsd-src-regression-suite:ncpus=2 --param freebsd-src-regression-suite:parallelism=1 --param freebsd-src-regression-suite:count=100 --param freebsd-src-regression-suite:tests='sys/netinet/tcp_hpts_test.py' @tuexen, this panic arises somewhere in your latest patch series between commit be1ad90e6bb6ea915d122f7abe407dc18d38a673 and commit 2241cd10d6e0eaf16d1f3090f1d438543e127f0c. I am not able to bisect further due to build issues in the intermediate commits inside the series. See the URL for the failure showing up in Jenkins CI. Please triage as necessary.
A patch is under review D53108.
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=1985940204dc01d4524c6351ab25a182bfde23ae commit 1985940204dc01d4524c6351ab25a182bfde23ae Author: Michael Tuexen <tuexen@FreeBSD.org> AuthorDate: 2025-10-14 23:36:54 +0000 Commit: Michael Tuexen <tuexen@FreeBSD.org> CommitDate: 2025-10-14 23:36:54 +0000 conf: enable TCP_HPTS_KTEST on debug builds Enable the kernel build option TCP_HPTS_KTEST on debug builds and disable it on non-debug builds. PR: 290234 Reviewed by: Nick Banks, glebius Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D53108 sys/conf/std.debug | 1 + sys/conf/std.nodebug | 1 + 2 files changed, 2 insertions(+)
@tuexen does this also need to be MFC'd to stable/15? I see that the only failing test leftover is this: https://ci.freebsd.org/job/FreeBSD-stable-15-amd64-test/230/testReport/sys.netlink.test_netlink_message_writer/py/__test_cases_list__/. It seems that stable/15 does not have TCP_HPTS_KTEST. After https://cgit.freebsd.org/src/commit/?id=1aad58b919d3d22f86be01b8e26a203cd020eaae (Remove std.debug from kernel configs) in stable/15, this test fails.
(In reply to Siva Mahadevan from comment #3) This does not need to be MFCed to stable/15. Neither the commit mentions that nor this bug report mentions that.
(In reply to Michael Tuexen from comment #4) What do you expect to happen here, since you changed the state from Closed to In Progress?
My mistake then, if TCP_HPTS_KTEST is not relevant to the failing netlink tests, I'll investigate the cause further. Changing back to closed.