Date: Tue, 13 Mar 2012 22:00:47 +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: r232947 - head/sys/kern Message-ID: <201203132200.q2DM0loJ064851@svn.freebsd.org>
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Author: kib Date: Tue Mar 13 22:00:46 2012 New Revision: 232947 URL: http://svn.freebsd.org/changeset/base/232947 Log: Lock the process around manipulations with p_flag. Reported and reviewed by: jh MFC after: 3 days Modified: head/sys/kern/kern_exit.c Modified: head/sys/kern/kern_exit.c ============================================================================== --- head/sys/kern/kern_exit.c Tue Mar 13 21:25:25 2012 (r232946) +++ head/sys/kern/kern_exit.c Tue Mar 13 22:00:46 2012 (r232947) @@ -738,10 +738,12 @@ proc_reap(struct thread *td, struct proc LIST_REMOVE(p, p_list); /* off zombproc */ sx_xunlock(&allproc_lock); LIST_REMOVE(p, p_sibling); + PROC_LOCK(p); if (p->p_flag & P_ORPHAN) { LIST_REMOVE(p, p_orphan); p->p_flag &= ~P_ORPHAN; } + PROC_UNLOCK(p); leavepgrp(p); #ifdef PROCDESC if (p->p_procdesc != NULL)
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