en Copyright 2015 Java http://kernelsources.org:8080/source/history/freebsd/tests/sys/pmc/pmc_exec_test.c#068957e040f40eb7f484b2530481f3eae02f9d44 hwpmc: add regression tests for a credential-changing execThis tests what FreeBSD-SA-26:56.hwpmc fixed.exec_setgid_drops_pmc asserts the kernel takes a process-mode PMC awaywhen its target execs a set-gid program its owner is not entitled totrace.exec_setuid_no_double_unlink lets the target exec a set-uid program;the teardown must unlink the process descriptor exactly once, andcompleting at all is the assertion.Both need an unprivileged owner and must not drop privileges themselves,since p_candebug() would then refuse the target to its own owner; theyask for require.user instead.MFC after: 1 monthMFC to: stable/15MFC to: stable/14Assisted-by: Claude Code (Opus 5) List of files: /freebsd/tests/sys/pmc/pmc_exec_test.c Tue, 25 Aug 2026 20:55:22 +0200 Alexander Leidinger <netchild@FreeBSD.org>