Date: Tue, 1 Jul 2014 16:19:20 +0200 From: Mateusz Guzik <mjguzik@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Mateusz Guzik <mjg@freebsd.org> Subject: Re: svn commit: r268074 - head/sys/kern Message-ID: <20140701141920.GC26696@dft-labs.eu> In-Reply-To: <201407010940.57602.jhb@freebsd.org> References: <201407010629.s616TFul082441@svn.freebsd.org> <201407010940.57602.jhb@freebsd.org>
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On Tue, Jul 01, 2014 at 09:40:57AM -0400, John Baldwin wrote:
> On Tuesday, July 01, 2014 2:29:15 am Mateusz Guzik wrote:
> > Modified: head/sys/kern/kern_sig.c
> >
> ==============================================================================
> > --- head/sys/kern/kern_sig.c Tue Jul 1 06:23:48 2014 (r268073)
> > +++ head/sys/kern/kern_sig.c Tue Jul 1 06:29:15 2014 (r268074)
> > @@ -3453,10 +3453,6 @@ sigacts_copy(struct sigacts *dest, struc
> > int
> > sigacts_shared(struct sigacts *ps)
> > {
> > - int shared;
> >
> > - mtx_lock(&ps->ps_mtx);
> > - shared = ps->ps_refcnt > 1;
> > - mtx_unlock(&ps->ps_mtx);
> > - return (shared);
> > + return (ps->ps_refcnt > 1);
> > }
>
> You should KASSERT() in sigacts_shared that P_HADTHREADS is not set so that
> new code does not call this function unsafely in the future.
>
Looks more like !P_HADTHREADS || p->p_singlethread != NULL on the first
sight, but yeah, I'll add an assertion.
Thanks,
--
Mateusz Guzik <mjguzik gmail.com>
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