Date: Tue, 27 Jul 2010 17:37:49 +1000 From: Lawrence Stewart <lstewart@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: <4C4E8CCD.1010101@freebsd.org> In-Reply-To: <20100726160732.GA37936@mech-cluster241.men.bris.ac.uk> References: <20100726132451.GA18443@mech-cluster241.men.bris.ac.uk> <20100726160732.GA37936@mech-cluster241.men.bris.ac.uk>
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On 07/27/10 02:07, Anton Shterenlikht wrote: > On Mon, Jul 26, 2010 at 02:24:52PM +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. >> >> (copied by hand) >> >> 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 = 0 >> panic: Duplicate free of item 0xffffff0002661c00 from zone 0xffffff00b7f9a500(1024) >> >> cpuid = 0 >> KDB: enter: panic >> [ thread pid 0 tid 100000 ] >> Stopped at kdb_enter+0x3d: movq $0,0x74f360(%rip) >> db>bt >> >> (very long output.. ending in) >> >> mi_startup() at mi_startup_0x59 >> btext() at btext+0x2c > > I moved back as far as r204000, still the same panic. > > Please advise I get this same panic on my Toshiba Portege R600 laptop when I boot it into Windows and then reboot it into FreeBSD. My guess is that the Windows drivers leave the hardware in a state which the FreeBSD code doesn't know how to deal with. I don't run Windows often so haven't hit this panic in a while, but the trick that always worked for me was to go into the BIOS and "Reset to defaults", then boot into FreeBSD. Cheers, Lawrence
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