From owner-svn-src-all@freebsd.org Thu Sep 17 23:14:17 2020 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id E83223F0BCD; Thu, 17 Sep 2020 23:14:17 +0000 (UTC) (envelope-from brooks@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Bst895sPVz3XTq; Thu, 17 Sep 2020 23:14:17 +0000 (UTC) (envelope-from brooks@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id AD24611A74; Thu, 17 Sep 2020 23:14:17 +0000 (UTC) (envelope-from brooks@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 08HNEH7w083425; Thu, 17 Sep 2020 23:14:17 GMT (envelope-from brooks@FreeBSD.org) Received: (from brooks@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 08HNEHn3083424; Thu, 17 Sep 2020 23:14:17 GMT (envelope-from brooks@FreeBSD.org) Message-Id: <202009172314.08HNEHn3083424@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: brooks set sender to brooks@FreeBSD.org using -f From: Brooks Davis Date: Thu, 17 Sep 2020 23:14:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r365864 - stable/11/sys/kern X-SVN-Group: stable-11 X-SVN-Commit-Author: brooks X-SVN-Commit-Paths: stable/11/sys/kern X-SVN-Commit-Revision: 365864 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Sep 2020 23:14:18 -0000 Author: brooks Date: Thu Sep 17 23:14:17 2020 New Revision: 365864 URL: https://svnweb.freebsd.org/changeset/base/365864 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/11/sys/kern/kern_sig.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/kern/kern_sig.c ============================================================================== --- stable/11/sys/kern/kern_sig.c Thu Sep 17 22:29:38 2020 (r365863) +++ stable/11/sys/kern/kern_sig.c Thu Sep 17 23:14:17 2020 (r365864) @@ -3731,7 +3731,8 @@ 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); }