From owner-svn-src-stable@freebsd.org Wed Sep 9 23:11:55 2020 Return-Path: Delivered-To: svn-src-stable@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 B3C223E026E; Wed, 9 Sep 2020 23:11:55 +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 4BmyT74PgXz44Y8; Wed, 9 Sep 2020 23:11:55 +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 7B9C79781; Wed, 9 Sep 2020 23:11:55 +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 089NBtQr051286; Wed, 9 Sep 2020 23:11:55 GMT (envelope-from brooks@FreeBSD.org) Received: (from brooks@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 089NBtjr051285; Wed, 9 Sep 2020 23:11:55 GMT (envelope-from brooks@FreeBSD.org) Message-Id: <202009092311.089NBtjr051285@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: brooks set sender to brooks@FreeBSD.org using -f From: Brooks Davis Date: Wed, 9 Sep 2020 23:11:55 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r365545 - stable/12/sys/kern X-SVN-Group: stable-12 X-SVN-Commit-Author: brooks X-SVN-Commit-Paths: stable/12/sys/kern X-SVN-Commit-Revision: 365545 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Sep 2020 23:11:55 -0000 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); }