Date: Fri, 2 Oct 2009 12:32:26 GMT From: Robert Watson <rwatson@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 169127 for review Message-ID: <200910021232.n92CWQC5008465@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=169127 Change 169127 by rwatson@rwatson_freebsd_capabilities on 2009/10/02 12:32:03 Close a race in which a process managed using a process descriptor is exiting simultaneously with the process descriptor being closed by extending coverage of the proctree lock during close. Affected files ... .. //depot/projects/trustedbsd/capabilities/src/sys/kern/sys_procdesc.c#13 edit Differences ... ==== //depot/projects/trustedbsd/capabilities/src/sys/kern/sys_procdesc.c#13 (text+ko) ==== @@ -337,11 +337,11 @@ pd = fp->f_data; fp->f_ops = &badfileops; fp->f_data = NULL; + + sx_xlock(&proctree_lock); PROCDESC_LOCK(pd); pd->pd_flags |= PD_CLOSED; PROCDESC_UNLOCK(pd); - - sx_xlock(&proctree_lock); p = pd->pd_proc; PROC_LOCK(p); if (p->p_state == PRS_ZOMBIE) {
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