Date: Fri, 18 May 2012 14:30:11 GMT From: John Baldwin <jhb@freebsd.org> To: freebsd-net@FreeBSD.org Subject: Re: kern/110284: [if_ethersubr] Invalid Assumption in SIOCSIFADDR in ether_ioctl() Message-ID: <201205181430.q4IEUBtg077548@freefall.freebsd.org>
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The following reply was made to PR kern/110284; it has been noted by GNATS.
From: John Baldwin <jhb@freebsd.org>
To: freebsd-net@freebsd.org
Cc: "Devon H. O'Dell" <devon.odell@gmail.com>,
bug-followup@freebsd.org,
gavin@freebsd.org,
Robert Watson <rwatson@freebsd.org>
Subject: Re: kern/110284: [if_ethersubr] Invalid Assumption in SIOCSIFADDR in ether_ioctl()
Date: Fri, 18 May 2012 10:27:49 -0400
On Wednesday, May 16, 2012 10:37:36 pm Devon H. O'Dell wrote:
> 2012/5/16 Devon H. O'Dell <devon.odell@gmail.com>:
> > Hi Gavin, freebsd-net,
> >
> > --- if_ethersubr.c 2011-09-22 20:51:37.000000000 -0400
> > +++ /home/dho/if_ethersubr.c 2012-05-16 22:27:17.000000000 -0400
> > @@ -1146,7 +1146,9 @@
> > switch (ifa->ifa_addr->sa_family) {
> > #ifdef INET
> > case AF_INET:
> > - ifp->if_init(ifp->if_softc); /* before
arpwhohas */
> > + if (ifp->if_flags & IFF_RUNNING == 0) {
>
> That's probably ((ifp->if_flags & IFF_RUNNING) == 0). Also, I'm not on
> freebsd-net or cc'ed on the PR afaik, so please cc me explicitly on
> followups if more information is needed.
You mean if_drv_flags and IF_DRV_RUNNING.
It's a bit fugly, yes, and the new check would be racey.
--
John Baldwin
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