[regression] Bug 217069 - Wake on Lan is broken on r8169 since 6.2

[regression] Bug 217069 - Wake on Lan is broken on r8169 since 6.2

[Thorsten Leemhuis]

Hi, this is your Linux kernel regression tracker.

I noticed a regression report in bugzilla.kernel.org. As many (most?)
kernel developer don't keep an eye on it, I decided to forward it by
mail. Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=217069 :

> Ivan Ivanich 2023-02-22 00:51:52 UTC
> 
> After upgrade to 6.2 having issues with wake on lan on 2 systems: -
> first is an old lenovo laptop from 2012(Ivy Bridge) with realtek
> network adapter - second is a PC(Haswell refresh) with PCIE realtek
> network adapter
> 
> Both uses r8169 driver for network.
> 
> On laptop it's not possible to wake on lan after poweroff On PC it's
> not possible to wake on lan up after hibernate but works after
> poweroff
> 
> In both cases downgrade to 6.1.x kernel fixes the issue.

See the ticket for more details.

@Ivan: maybe someone that sees this mail might have an idea what's
wrong. But if not, you likely need to run a bisection to find what's
causing this.

[TLDR for the rest of this mail: I'm adding this report to the list of
tracked Linux kernel regressions; the text you find below is based on a
few templates paragraphs you might have encountered already in similar
form.]

BTW, let me use this mail to also add the report to the list of tracked
regressions to ensure it's doesn't fall through the cracks:

#regzbot introduced: v6.1..v6.2
https://bugzilla.kernel.org/show_bug.cgi?id=217069
#regzbot title: net/r8169: Wake/power on Lan is broken on two machines
#regzbot ignore-activity

This isn't a regression? This issue or a fix for it are already
discussed somewhere else? It was fixed already? You want to clarify when
the regression started to happen? Or point out I got the title or
something else totally wrong? Then just reply and tell me -- ideally
while also telling regzbot about it, as explained by the page listed in
the footer of this mail.

Developers: When fixing the issue, remember to add 'Link:' tags pointing
to the report (e.g. the buzgzilla ticket and maybe this mail as well, if
this thread sees some discussion). See page linked in footer for details.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

Re: [regression] Bug 217069 - Wake on Lan is broken on r8169 since 6.2

[Linux regression tracking (Thorsten Leemhuis)]

[Quick inquiry with different recipients]

> I noticed a regression report in bugzilla.kernel.org. As many (most?)
> kernel developer don't keep an eye on it, I decided to forward it by
> mail. Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=217069 :

To Rafael and the ACPI & PM folks as well as to Bjorn and the PCI folks:

Three users reported that WOL/Wake on Lan broke for them with 6.2; two
of them have Realtek chips, one an Intel NIC. For details see the bug
linked above.

Did something in ACPI/PM/PCI land change for 6.2 that might cause
something like this? Or is such a problem even known already?

Just fishing for ideas here. If nobody has any, one of the reports will
have to bisect this.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

Re: [regression] Bug 217069 - Wake on Lan is broken on r8169 since 6.2

[Thorsten Leemhuis]

On 22.02.23 08:57, Thorsten Leemhuis wrote:
> Hi, this is your Linux kernel regression tracker.
> 
> I noticed a regression report in bugzilla.kernel.org. As many (most?)
> kernel developer don't keep an eye on it, I decided to forward it by
> mail. Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=217069 :
> 
>> Ivan Ivanich 2023-02-22 00:51:52 UTC
>>
>> After upgrade to 6.2 having issues with wake on lan on 2 systems: -
>> first is an old lenovo laptop from 2012(Ivy Bridge) with realtek
>> network adapter - second is a PC(Haswell refresh) with PCIE realtek
>> network adapter
>>
>> Both uses r8169 driver for network.
>>
>> On laptop it's not possible to wake on lan after poweroff On PC it's
>> not possible to wake on lan up after hibernate but works after
>> poweroff
>>
>> In both cases downgrade to 6.1.x kernel fixes the issue.
> 
> See the ticket for more details.

JFYI: turns out this is not a network bug, as the issue was bisected to
5c62d5aab875 ("ACPICA: Events: Support fixed PCIe wake event"). The
ticket linked above has the details.

#regzbot introduced: 5c62d5aab875
#regzbot ignore-activity

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.