netdev - Re: r8169: transmit transmit queue timed out

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Date: Thu, 13 Jul 2023 09:01:55 +0200
From: Kurt Kanzenbach <kurt@...utronix.de>
To: Heiner Kallweit <hkallweit1@...il.com>, Tobias Klausmann
 <tobias.klausmann@...enet.de>, Linux regressions mailing list
 <regressions@...ts.linux.dev>
Cc: Realtek linux nic maintainers <nic_swsd@...ltek.com>,
 netdev@...r.kernel.org
Subject: Re: r8169: transmit transmit queue timed out - v6.4 cycle

Hello Heiner,

On Mon Jul 10 2023, Heiner Kallweit wrote:
> On 05.07.2023 00:25, Tobias Klausmann wrote:
>> Hi, top posting as well, as im on vacation, too. The system does not
>> allow disabling ASPM, it is a very constrained notebook BIOS, thus
>> the suggestion is nit feasible. All in all the sugesstion seems not
>> favorable for me, as it is unknown how many systems are broken the
>> same way. Having a workaround adviced as default seems oretty wrong
>> to me.
>> 
>
> To get a better understanding of the affected system:
> Could you please provide a full dmesg log and the lspci -vv output?

I'm having the same problem as described by Tobias on a desktop
machine. v6.3 works; v6.4 results in transmit queue timeouts
occasionally. Reverting 2ab19de62d67 ("r8169: remove ASPM restrictions
now that ASPM is disabled during NAPI poll") "solves" the issue.

From dmesg:

|~ % dmesg | grep -i ASPM
|[    0.152746] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
|[    0.905100] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3]
|[    0.906508] acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS configuration
|[    1.156585] pci 10000:e1:00.0: can't override BIOS ASPM; OS doesn't have ASPM control
|[    1.300059] r8169 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control

In addition, with commit 2ab19de62d67 in kernel regular messages like
this show up:

|[ 7487.214593] pcieport 0000:00:1c.2: AER: Corrected error received: 0000:03:00.0

I'm happy to test any patches or provide more info if needed.

Thanks,
Kurt

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