linux-kernel - Re: 4.11-rc*: PCI IRQ allocation broken

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Message-ID: <alpine.LRH.2.20.1704191355190.16787@math.ut.ee>
Date:   Wed, 19 Apr 2017 13:55:53 +0300 (EEST)
From:   Meelis Roos <mroos@...ux.ee>
To:     Bjorn Helgaas <bhelgaas@...gle.com>
cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Linux Kernel list <linux-kernel@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: 4.11-rc*: PCI IRQ allocation broken

> On Thu, Apr 13, 2017 at 2:03 PM, Meelis Roos <mroos@...ux.ee> wrote:
> >> > This happens on my HP Compaq 8100 Elite SFF PC. While 4.10 works fine,
> >> > 4.11.-rc5 and at least back to 4.10.0-10770-g2d6be4abf514 fail to assign
> >> > PCI IRQ to multiple devices (no GSI messages in the dmesg). This results
> >> > in mouse in one USB port working and keyboard in another USB port not
> >> > working, reproducibly.
> >> >
> >> > Will bisect.
> >>
> >> Thanks a lot for the report, Meelis, and I apologize for the inconvenience.
> >> I opened https://bugzilla.kernel.org/show_bug.cgi?id=195319 to track this,
> >> marked it as a regression, and attached your v4.11-rc5 dmesg to it.
> >
> > Bisecting got stuck - I reached a state with about 5-6 steps left when I
> > got an unbootable kernel. Went there yesterday, restarted a good kernel,
> > skipped the kernel and left. When I rebooted into the next bisect
> > kernel, it has hung again. Will see when I get to go there.
> > Unfortunately I did not remember to take the intermediate bisect state
> > with me :(
> 
> I *think* the ACPI guys found the problem; at least Michael Marlen
> <michael@...haelmarley.com> reported the same problem and that it was
> fixed by reverting 57707a9a7780 ("ACPICA: Resources: Not a valid
> resource if buffer length too long").

Yes, that was it. I am now at the computer and compiled and tested 
todays 4.11-rc7+git and it works fine.

> 
> Sorry, I should have added you the cc list in bugzilla right away.
> 
> >> Something seems broken in ACPI.  There are a bunch of warnings, and I
> >> think the PCI IRQ problem is a consequence of the fact that the
> >> PNP0A08 _CRS evaluation failed, and we probably don't bother looking
> >> for a _PRT under that bridge.
> >>
> >> > Linux version 4.11.0-rc5-00033-g308ac7563944 (mroos@...metheus) (gcc version 6.3.0 20170321 (Debian 6.3.0-11) ) #64 SMP Wed Apr 5 12:29:53 EEST 2017
> >> > Command line: BOOT_IMAGE=/boot/vmlinuz-4.11.0-rc5-00033-g308ac7563944 root=/dev/sda1 ro
> >> > ...
> >> > ACPI BIOS Warning (bug): Optional FADT field Pm2ControlBlock has valid Address but zero Length: 0x0000000000000050/0x0 (20170119/tbfadt-658)
> >> > ACPI BIOS Warning (bug): Invalid length for FADT/Pm2ControlBlock: 0, using default 8 (20170119/tbfadt-708)
> >> > ...
> >> > acpi LNXCPU:00: Invalid PBLK length [7]
> >> > acpi LNXCPU:01: Invalid PBLK length [7]
> >> > acpi LNXCPU:02: Invalid PBLK length [7]
> >> > acpi LNXCPU:03: Invalid PBLK length [7]
> >> > acpi PNP0A08:00: [Firmware Bug]: no secondary bus range in _CRS
> >> > ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
> >> > acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
> >> > ACPI BIOS Error (bug): \_SB.PCI0._OSC: Excess arguments - ASL declared 5, ACPI requires 4 (20170119/nsarguments-189)
> >> > ACPI Error: [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS (20170119/dsfield-211)
> >> > ACPI Error: Method parse/execution failed [\_SB.PCI0._OSC] (Node ffff880113031668), AE_ALREADY_EXISTS (20170119/psparse-543)
> >> > acpi PNP0A08:00: _OSC failed (AE_ALREADY_EXISTS); disabling ASPM
> >> > acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain 0000 [bus 00-3f] only partially covers this bridge
> >> > acpi PNP0A08:00: failed to parse _CRS method, error code -5
> >> > acpi PNP0A08:00: Bus 0000:00 not present in PCI namespace
> >> > ...
> >> > PCI: Discovered peer bus 00
> >> > PCI: root bus 00: using default resources
> >> > PCI: Probing PCI hardware (bus 00)
> >> > ...
> >> > ACPI: \: failed to evaluate _DSM (0x1001)
> >> > ...
> >> > PCI host bridge to bus 0000:00
> >> > pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
> >> > pci_bus 0000:00: root bus resource [mem 0x00000000-0xfffffffff]
> >> > pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
> >> > ...
> >> > PCI: Discovered peer bus 3f
> >> > PCI: root bus 3f: using default resources
> >> > PCI: Probing PCI hardware (bus 3f)
> >> > ACPI: \: failed to evaluate _DSM (0x1001)
> >> > ...
> >> > pnp 00:00: Plug and Play ACPI device, IDs PNP0b00 (active)
> >> > pnp 00:01: can't evaluate _CRS: 12316
> >> > ...
> >> > [drm] ACPI BIOS requests an excessive sleep of 4294705151 ms, using 1500 ms instead
> >>
> >
> > --
> > Meelis Roos (mroos@...ux.ee)
> > --
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> 

-- 
Meelis Roos (mroos@...ux.ee)