Date: Tue, 27 Jul 2010 14:52:17 +0100 From: Gavin Atkinson <gavin@FreeBSD.org> To: Anton Shterenlikht <mexas@bristol.ac.uk> Cc: freebsd-current@FreeBSD.org Subject: Re: amd64 panic snd_hda - hdac_get_capabilities: Invalid corb size (0) Message-ID: <1280238737.78791.20.camel@buffy.york.ac.uk> In-Reply-To: <20100727115831.GA46325@mech-cluster241.men.bris.ac.uk> References: <20100726132451.GA18443@mech-cluster241.men.bris.ac.uk> <1280226205.78791.0.camel@buffy.york.ac.uk> <20100727115831.GA46325@mech-cluster241.men.bris.ac.uk>
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On Tue, 2010-07-27 at 12:58 +0100, Anton Shterenlikht wrote: > On Tue, Jul 27, 2010 at 11:23:24AM +0100, Gavin Atkinson wrote: > > On Mon, 2010-07-26 at 14:24 +0100, Anton Shterenlikht wrote: > > > On amd64 r210496 I get this panic when booting a kernel > > > with snd_hda(4). I haven't used this driver before, so > > > can't say if this is a regression. > > >=20 > > > (copied by hand) > > >=20 > > > hdac0: <ATI SB600 High Definition Audion Controller> irq 16 at device= 20.2 on pci0 > > > hdac0: HDA Driver Revision: 20100226_0142 > > > hdac0: [ITHREAD] > > > hdac0: hdac_get_capabilities: Invalid corb size (0) > > > device_attach: hdac0 attach returned 6 > > > Slab at 0xffffff000261eb18, freei 3 =3D 0 > > > panic: Duplicate free of item 0xffffff0002661c00 from zone 0xffffff00= b7f9a500(1024) > > >=20 > > > cpuid =3D 0 > > > KDB: enter: panic > > > [ thread pid 0 tid 100000 ] > > > Stopped at kdb_enter+0x3d: movq $0,0x74f360(%rip) > > > db>bt > > >=20 > > > (very long output.. ending in) > >=20 > > Can you give us this output please? At least the "panic()" line and th= e > > next six or so lines? > >=20 >=20 > ok, will do. > I wish the modern laptops had a serial link.. Indeed. I keep buying Toshibas, who still have a range with serial ports. Having said that, have you tried to use the dcons stuff over firewire? That usually works pretty well in my experience. http://wiki.freebsd.org/DebugWithDcons Thanks, Gavin --=20 Gavin Atkinson FreeBSD committer and bugmeister
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