From owner-svn-src-all@FreeBSD.ORG Sun Feb 15 08:44:31 2015 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 1F9FDBB0; Sun, 15 Feb 2015 08:44:31 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0B4DAC56; Sun, 15 Feb 2015 08:44:31 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id t1F8iUrM006561; Sun, 15 Feb 2015 08:44:30 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id t1F8iUVR006560; Sun, 15 Feb 2015 08:44:30 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201502150844.t1F8iUVR006560@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Sun, 15 Feb 2015 08:44:30 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r278795 - head/sys/kern X-SVN-Group: head 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: 2.1.18-1 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: Sun, 15 Feb 2015 08:44:31 -0000 Author: kib Date: Sun Feb 15 08:44:30 2015 New Revision: 278795 URL: https://svnweb.freebsd.org/changeset/base/278795 Log: Reparenting done by debugger attach can leave reaper without direct children. Handle the situation instead asserting that it is impossible. Reported and tested by: emaste Sponsored by: The FreeBSD Foundation MFC after: 3 days Modified: head/sys/kern/kern_procctl.c Modified: head/sys/kern/kern_procctl.c ============================================================================== --- head/sys/kern/kern_procctl.c Sun Feb 15 08:43:19 2015 (r278794) +++ head/sys/kern/kern_procctl.c Sun Feb 15 08:44:30 2015 (r278795) @@ -160,7 +160,7 @@ static int reap_status(struct thread *td, struct proc *p, struct procctl_reaper_status *rs) { - struct proc *reap, *p2; + struct proc *reap, *p2, *first_p; sx_assert(&proctree_lock, SX_LOCKED); bzero(rs, sizeof(*rs)); @@ -176,8 +176,10 @@ reap_status(struct thread *td, struct pr rs->rs_descendants = 0; rs->rs_children = 0; if (!LIST_EMPTY(&reap->p_reaplist)) { - KASSERT(!LIST_EMPTY(&reap->p_children), ("no children")); - rs->rs_pid = LIST_FIRST(&reap->p_children)->p_pid; + first_p = LIST_FIRST(&reap->p_children); + if (first_p == NULL) + first_p = LIST_FIRST(&reap->p_reaplist); + rs->rs_pid = first_p->p_pid; LIST_FOREACH(p2, &reap->p_reaplist, p_reapsibling) { if (proc_realparent(p2) == reap) rs->rs_children++;