Date: Fri, 15 Apr 2016 09:13:01 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r298043 - head/sys/ddb Message-ID: <201604150913.u3F9D1ln059443@repo.freebsd.org>
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Author: kib Date: Fri Apr 15 09:13:01 2016 New Revision: 298043 URL: https://svnweb.freebsd.org/changeset/base/298043 Log: Avoid NULL pointer dereference, for a process which is not (yet) a member of a process group, e.g. during the system bootstrap. Submitted by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> MFC after: 1 week Modified: head/sys/ddb/db_ps.c Modified: head/sys/ddb/db_ps.c ============================================================================== --- head/sys/ddb/db_ps.c Fri Apr 15 08:17:55 2016 (r298042) +++ head/sys/ddb/db_ps.c Fri Apr 15 09:13:01 2016 (r298043) @@ -184,7 +184,8 @@ db_ps(db_expr_t addr, bool hasaddr, db_e strlcat(state, "V", sizeof(state)); if (p->p_flag & P_SYSTEM || p->p_lock > 0) strlcat(state, "L", sizeof(state)); - if (p->p_session != NULL && SESS_LEADER(p)) + if (p->p_pgrp != NULL && p->p_session != NULL && + SESS_LEADER(p)) strlcat(state, "s", sizeof(state)); /* Cheated here and didn't compare pgid's. */ if (p->p_flag & P_CONTROLT)
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