Date: Mon, 20 Oct 2003 10:37:00 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Paolo Pisati <flag@oltrelinux.com> Cc: current@freebsd.org Subject: Re: pcm & exclusive sleep mutex with Oct19 CURRENT Message-ID: <20031020173700.GA59841@rot13.obsecurity.org> In-Reply-To: <20031020171519.GA40589@southcross.skynet.org> References: <20031020171519.GA40589@southcross.skynet.org>
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[-- Attachment #1 --] On Mon, Oct 20, 2003 at 07:15:19PM +0200, Paolo Pisati wrote: > > from my dmesg: > [snip] > pcm0: <ESS Technology Allegro-1> port 0xb800-0xb8ff irq 5 at device 1.0 on pci2 > pcm0: failed to enable memory mapping! > pcm0: <ESS Technology ES1988 AC97 Codec> > malloc() of "64" with the following non-sleepable locks held: > exclusive sleep mutex pcm0:mixer (pcm mixer) r = 0 (0xc2d34540) locked @ /usr/src/sys/dev/sound/pcm/mixer.c:322 Unfortunately none of the sound developers have been interested in looking at the locking problems in the code. > acquiring duplicate lock of same type: "pcm channel" > 1st pcm0:record:0 @ /usr/src/sys/dev/sound/pcm/sound.c:195 > 2nd pcm0:play:0 @ /usr/src/sys/dev/sound/pcm/sound.c:195 > Stack backtrace: > > with no backtrace at all. FWIW, the backtrace would have been reported on the system console. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (FreeBSD) iD8DBQE/lB08Wry0BWjoQKURAv6FAKDmr9S/1tTHpaH5sSmRXjqMNkfEaQCeIRVi qfWcxaZmNa0JMHhQ+HA0tmI= =AVw6 -----END PGP SIGNATURE-----help
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