Author: brooks Date: Wed Sep 9 23:11:55 2020 New Revision: 365545 URL: https://svnweb.freebsd.org/changeset/base/365545
Log: MFC r365284: Always report ENOSYS in init While rare, encountering an unimplemented system call early in init is catastrophic and difficult to debug. Even after a SIGSYS handler is registered, such configurations are problematic. As such, always report such events for pid 1 (following kern.lognosys if non-zero). Reviewed by: kevans, imp Obtained from: CheriBSD (plus suggestions from kevans) Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D26288 Modified: stable/12/sys/kern/kern_sig.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/kern/kern_sig.c ============================================================================== --- stable/12/sys/kern/kern_sig.c Wed Sep 9 23:06:35 2020 (r365544) +++ stable/12/sys/kern/kern_sig.c Wed Sep 9 23:11:55 2020 (r365545) @@ -3760,7 +3760,8 @@ nosys(struct thread *td, struct nosys_args *args) uprintf("pid %d comm %s: nosys %d\n", p->p_pid, p->p_comm, td->td_sa.code); } - if (kern_lognosys == 2 || kern_lognosys == 3) { + if (kern_lognosys == 2 || kern_lognosys == 3 || + (p->p_pid == 1 && (kern_lognosys & 3) == 0)) { printf("pid %d comm %s: nosys %d\n", p->p_pid, p->p_comm, td->td_sa.code); } _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
