Date: Tue, 02 Oct 2012 12:05:30 -0700 From: Sean Bruno <seanbru@yahoo-inc.com> To: John Baldwin <jhb@freebsd.org> Cc: "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>, Andriy Gapon <avg@freebsd.org> Subject: Re: stable/9 panic Bad tailq NEXT(0xffffffff80e52660->tqh_last) != NULL Message-ID: <1349204730.4246.12.camel@powernoodle.corp.yahoo.com> In-Reply-To: <201210010847.53984.jhb@freebsd.org> References: <1342197082.2664.4.camel@powernoodle.corp.yahoo.com> <1348768344.10543.7.camel@powernoodle.corp.yahoo.com> <1348779229.10543.11.camel@powernoodle.corp.yahoo.com> <201210010847.53984.jhb@freebsd.org>
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On Mon, 2012-10-01 at 05:47 -0700, John Baldwin wrote: > Can you add extra printfs to see where exactly attach is failing? I > would > start with the attach routine in sys/dev/acpica/acpi_pcib_pci.c: > > hrm ... interesting side effects. After adding my printf's I don't hit the panic any more. :-) I changed the ret val of acpi_pcib_pci_attach() and put in some instrumentation in acpi_pcib_attach(). The key value is that acpi_DeviceIsPresent() appears to be returning FALSE in this case. patch used -->http://people.freebsd.org/~sbruno/acpi_pcib.txt Resulted in the following relevant output: pcib7: <ACPI PCI-PCI bridge> at device 28.0 on pci0 pcib7: domain 0 pcib7: secondary bus 7 pcib7: subordinate bus 7 pcib7: no prefetched decode pcib7: This device is not present pcib7: acpi_pcib_pci_attach: err_attach(6) device_attach: pcib7 attach returned 6 pcib7: <ACPI PCI-PCI bridge> irq 19 at device 28.7 on pci0 pcib0: allocated type 3 (0xde000000-0xdf7fffff) for rid 20 of pcib7 pcib0: allocated type 3 (0xd8000000-0xd8ffffff) for rid 24 of pcib7 pcib7: domain 0 pcib7: secondary bus 8 pcib7: subordinate bus 12 pcib7: memory decode 0xde000000-0xdf7fffff pcib7: prefetched decode 0xd8000000-0xd8ffffff pci8: <ACPI PCI bus> on pcib7 pci8: domain=0, physical bus=8 found-> vendor=0x1912, dev=0x0013, revid=0x00 domain=0, bus=8, slot=0, func=0 class=06-04-00, hdrtype=0x01, mfdev=0 cmdreg=0x0007, statreg=0x0010, cachelnsz=16 (dwords) lattimer=0x00 (0 ns), mingnt=0x0b (2750 ns), maxlat=0x00 (0 ns) powerspec 3 supports D0 D3 current D0 MSI supports 1 message, 64 bit pcib8: <PCI-PCI bridge> at device 0.0 on pci8 pcib7: allocated memory range (0xde000000-0xdf7fffff) for rid 20 of pcib8 pcib7: allocated prefetch range (0xd8000000-0xd8ffffff) for rid 24 of pcib8 pcib8: domain 0 pcib8: secondary bus 9 pcib8: subordinate bus 12 pcib8: memory decode 0xde000000-0xdf7fffff pcib8: prefetched decode 0xd8000000-0xd8ffffff pci9: <PCI bus> on pcib8 pci9: domain=0, physical bus=9
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