Date: Fri, 10 Jan 2003 08:36:28 -0200 From: "Daniel C. Sobral" <dcs@tcoip.com.br> To: Kris Kennaway <kris@obsecurity.org> Cc: Ulrich Spoerlein <q@uni.de>, leafy <leafy@leafy.idv.tw>, freebsd-current@FreeBSD.ORG Subject: Re: lock order reversal Message-ID: <3E1EA22C.8040600@tcoip.com.br> In-Reply-To: <20030104162517.GA630@leafy.idv.tw> References: <20030104162517.GA630@leafy.idv.tw> <20030106185639.27667916.q@uni.de> <20030110000101.GB28205@rot13.obsecurity.org>
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Kris Kennaway wrote:
> On Mon, Jan 06, 2003 at 06:56:39PM +0100, Ulrich Spoerlein wrote:
>
> >On 2003/01/05-00:25:17 leafy wrote:
> >
> >
> >>lock order reversal
> >>Jan 5 00:19:15 leafy kernel: 1st 0xc26b05c0 process lock (process lock)
> >>@/usr/src/sys/kern/kern_descrip.c:2099 Jan 5 00:19:15 leafy kernel: 2nd
> >>0xc2667e34 filedesc structure (filedesc structure) @
> >>/usr/src/sys/kern/kern_descrip.c:2106
> >>
> >>The kernel is only about 40 mins old.
>
>
> This is known and regularly reported here.
>
>
> >i got another LOR when starting up Quake2 (but only once every boot):
> >acquiring duplicate lock of same type: "pcm channel"
> > 1st pcm0:record:0 @ /usr/src/sys/dev/sound/pcm/sound.c:191
> > 2nd pcm0:play:0 @ /usr/src/sys/dev/sound/pcm/sound.c:191
>
>
> Don't know about this one.
What about this?
lock order reversal
1st 0xc25afac0 pcm0 (sound softc) @ /usr/src/sys/dev/sound/pci/cmi.c:520
2nd 0xc25af6c0 pcm0:play:0 (pcm channel) @
/usr/src/sys/dev/sound/pcm/channel.c:441
--
Daniel C. Sobral (8-DCS)
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