Re: Regression from "ACPI: OSI: Remove Linux-Dell-Video _OSI string"? (was: Re: Bug#1036530: linux-signed-amd64: Hard lock up of system)

[Mario Limonciello]

On 5/28/23 19:56, Nick Hastings wrote:
> Hi,
>
> * Mario Limonciello <mario.limonciello@xxxxxxx> [230528 21:44]:
> > On 5/28/23 01:49, Salvatore Bonaccorso wrote:
> > > Hi Mario
> > >
> > > Nick Hastings reported in Debian in https://bugs.debian.org/1036530
> > > lockups from his system after updating from a 6.0 based version to
> > > 6.1.y. >
> > > #regzbot ^introduced 24867516f06d
> > >
> > > he bisected the issue and tracked it down to:
> > >
> > > On Sun, May 28, 2023 at 10:14:51AM +0900, Nick Hastings wrote:
> > > > Control: tags -1 - moreinfo
> > > >
> > > > Hi,
> > > >
> > > > I repeated the git bisect, and the bad commit seems to be:
> > > >
> > > > (git)-[v6.1-rc1~206^2~4^5~3|bisect] % git bisect bad
> > > > 24867516f06dabedef3be7eea0ef0846b91538bc is the first bad commit
> > > > commit 24867516f06dabedef3be7eea0ef0846b91538bc
> > > > Author: Mario Limonciello <mario.limonciello@xxxxxxx>
> > > > Date:   Tue Aug 23 13:51:31 2022 -0500
> > > >
> > > >       ACPI: OSI: Remove Linux-Dell-Video _OSI string
> > > >       This string was introduced because drivers for NVIDIA hardware
> > > >       had bugs supporting RTD3 in the past.
> > > >       Before proprietary NVIDIA driver started to support RTD3, Ubuntu had
> > > >       had a mechanism for switching PRIME on and off, though it had required
> > > >       to logout/login to make the library switch happen.
> > > >       When the PRIME had been off, the mechanism had unloaded the NVIDIA
> > > >       driver and put the device into D3cold, but the GPU had never come back
> > > >       to D0 again which is why ODMs used the _OSI to expose an old _DSM
> > > >       method to switch the power on/off.
> > > >       That has been fixed by commit 5775b843a619 ("PCI: Restore config space
> > > >       on runtime resume despite being unbound"). so vendors shouldn't be
> > > >       using this string to modify ASL any more.
> > > >       Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx>
> > > >       Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> > > >       Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> > > >
> > > >    drivers/acpi/osi.c | 9 ---------
> > > >    1 file changed, 9 deletions(-)
> > > >
> > > > This machine is a Dell with an nvidia chip so it looks like this really
> > > > could be the commit that that is causing the problems. The description
> > > > of the commit also seems (to my untrained eye) to be consistent with the
> > > > error reported on the console when the lockup occurs:
> > > >
> > > > [   58.729863] ACPI Error: Aborting method \_SB.PCI0.PGON due to previous error (AE_AML_LOOP_TIMEOUT) (20220331/psparse-529)
> > > > [   58.729904] ACPI Error: Aborting method \_SB.PCI0.PEG0.PG00._ON due to previous error (AE_AML_LOOP_TIMEOUT) (20220331/psparse-529)
> > > > [   60.083261] vfio-pci 0000:01:00.0 Unable to change power state from D3cold to D0, device inaccessible
> > > >
> > > > Hopefully this is enough information for experts to resolve this.
> > >
> > > Does this ring some bell for you? Do you need any further information
> > > from Nick?
> > >
> > > Regards,
> > > Salvatore
>
> > Have Nick try using "pcie_port_pm=off" and see if it helps the issue.
>
> I booted into a 6.1 kernel with this option. It has been running without
> problems for 1.5 hours. Usually I would expect the lockup to have
> occurred by now.
>
> > Does this happen in the latest 6.4 RC as well?
>
> I have compiled that kernel and will boot into it after running this one
> with the pcie_port_pm=off for another hour or so.
>
> > I think we need to see a full dmesg and acpidump to better
> > characterize it.
>
> Please find attached. Let me know if there is anything else I can provide.
>
> Regards,
>
> Nick.

I don't see nouveau loading, are you explicitly preventing it from 
loading?  Can I see the journal from a boot when it reproduced?