Re: PCIVERBOSE causing kernel stack overflow during boot - why?

[Paul Goyette <paul%whooppee.com@localhost>]

On Tue, 18 Oct 2016, Paul Goyette wrote:

> Just as an added experiment, can you try to boot the non-PCIVERBOSE kernel, 
> and at the boot prompt enter
>
> 	load pciverbose
>
> before actually booting?
>
> As far as getting a back-trace, you could set DDB_COMMANDONENTER="bt" in your 
> config file ....
>
> The dmesg looks interesting, especially with that strange pci9 bus.  My 
> machine has a similar "management devices" pci bus.

Also, if you have installed pkgsrc/sysutils/pciutils it would be useful 
to get the output from

	lspci -tvnn

Otherwise, please provide output from following two commands:

	pcictl pci0 list -N
	pcictl pci0 list -n


> On Mon, 17 Oct 2016, Jaromír DoleÄ~Mek wrote:
>
> > Hi,
> >
> > I've got an amd64 system which panics with 'stack overflow detected'
> > on boot, somewhere halfway through probing pci9 bus, when booted with
> > kernel with PCIVERBOSE. Same kernel config without PCIVERBOSE boots
> > fine. dmesg without PCIVERBOSE is attached.
> >
> > Any idea what might be causing this?
> >
> > I've had cursory look at pci code, it doesn't seem as if anything
> > would be allocating extra space there. Maybe some interaction with
> > dev_verbose module code? Unfortunately can't get backtrace as this
> > happens before the keyboard is probed and attached.
> >
> > Jaromir
> >
> >
> > !DSPAM:58058f59188191671919093!
>
> +------------------+--------------------------+------------------------+
> | Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:      |
> | (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com   |
> | Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd.org |
> +------------------+--------------------------+------------------------+

+------------------+--------------------------+------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:      |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com   |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd.org |
+------------------+--------------------------+------------------------+