Date: Tue, 16 Dec 2003 09:38:15 +0900 (JST) From: Munehiro Matsuda <haro@kgt.co.jp> To: mat@cnd.mcgill.ca Cc: current@freebsd.org Subject: Re: 5.2-RELEASE TODO Message-ID: <20031216.093815.74752433.haro@kgt.co.jp> In-Reply-To: <20031215185606.GA63202@cnd.mcgill.ca> References: <3FDDD7AE.7040801@bis.midco.net> <20031216.013254.74722020.haro@h4.dion.ne.jp> <20031215185606.GA63202@cnd.mcgill.ca>
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From: Mathew Kanner <mat@cnd.mcgill.ca>
Date: Mon, 15 Dec 2003 13:56:06 -0500
<snip>
::> I still get LOR with my sound card and some hicup under disk load, with
::> today's 5.2-CURRENT. It's a UP system with following sound card.
::>
::> pcm0: <Yamaha DS-1E (YMF744)> port 0xfcac-0xfcaf,0xfc00-0xfc3f mem 0xfecf0000-0xfecf7fff irq 9 at device 9.0 on pci0
::> pcm0: <Asahi Kasei AK4543 AC97 Codec>
::>
::> Also, here's hand written LOR message:
::>
::> lock order reversal
::> 1st 0xc3405440 pcm0 (sound softc) @ dev/sound/pci/ds1.c:734
::> 2nd 0xc3405080 pcm0:play:0 (pcm play channel) @ dev/sound/pcm/channel.c:480
::> Stack backtrace:
::> ....
::> witness_lock(c3405080,0,c07a8705,1e0,c33f7300) at witness_lock+0x672
::> _mtx_lock_flags(c3405080,0,c07a8705,1e0,0) at _mtx_lock_flags+0xba
::> chn_intr(c33f7300,104,4,4,c3405240) at chn_intr+0x2f
::> ds_intr(c340b4000,0,c07b3baa,21f,c334c1c4) at ds_intr+0xf5
::> ithread_loop(c1856900,d03a7d48,c07b3a24,311,3473635f) at ithread_loop+0x192
::> fork_exit(c059da00,c1856900,d03a7d48) at fork_exit+0xb4
::> fork_trampoline() at fork_trampoline+0x8
::
:: Hello,
:: This LOR is mostly harmless. Please try the attached patch
::the avoid it. Since this bug isn't critical, I won't commit it to 5.2
::unless instructed otherwise by the -re team.
Hello Mat,
Thanks for the patch.
LOR does seem to have gone away.
I'll do some more testing under load, and see how it does.
Thank you,
Haro
=------------------------------------------------------------------------------
_ _ Munehiro (haro) Matsuda
-|- /_\ |_|_| Internet Solution Dept., Kubota Graphics Technologies Inc.
/|\ |_| |_|_| 2-8-8 Shinjuku Shinjuku-ku Tokyo 160-0022, Japan
Tel: +81-3-3225-0767 Fax: +81-3-3225-0740
Email: haro@kgt.co.jp
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