oh right, this one ...
Sean Bruno
seanwbruno at gmail.com
Tue Dec 11 18:48:11 UTC 2012
On Tue, 2012-12-11 at 10:13 -0800, Sean Bruno wrote:
> Finally got around to returning the Dell R620 series BIOS update that
> breaks badly on FreeBSD. I suspect that there is an ACPI update going
> on here that I need to figure out for -current. I'm going to disable
> the pci bus that fails to attach via device hints and get an acpidump in
> a bit.
acpidump --> http://people.freebsd.org/~sbruno/r620_acpi.txt
pciconf -lvcb --> http://people.freebsd.org/~sbruno/r620_pciconf.txt
Problematic pci bus attach is on pcib6
pcib6: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pcib6: domain 0
pcib6: secondary bus 6
pcib6: subordinate bus 6
pcib6: no prefetched decode
device_attach: pcib6 attach returned 6
pcib6: <ACPI PCI-PCI bridge> irq 19 at device 28.7 on pci0
panic: Bad tailq NEXT(0xffffffff814f3318->tqh_last) != NULL
A couple of comments here. It sure *looks* like the failure to attach
doesn't clean up after itself, which then leads to a *reuse* of pcib6
data elements for pcib7!
1. we fail to attach to pcib6
2. we don't clean up properly on a failure to attach
3. we try to reuse the data structure that failed for the next pcib
device.
Sean
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