Regression on linux-next (next-20250221)

[Bjorn Helgaas]

On Wed, Feb 26, 2025 at 07:36:19PM +0000, Borah, Chaitanya Kumar wrote:
> Hello Bjorn,
> 
> Hope you are doing well. I am Chaitanya from the linux graphics team in Intel.
> 
> This mail is regarding a regression we are seeing in our CI runs[1] on linux-next repository.
> 
> Since the version next-20250221 [2], we are seeing that some of the machines in our CI are unable to connect through ssh (and therefore unable to participate).
> Looking at the logs we see this.
> 
> `````````````````````````````````````````````````````````````````````````````````
> [    5.838496] e1000e: Intel(R) PRO/1000 Network Driver
> [    5.838515] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
> [    5.838737] e1000e 0000:01:00.0: Disabling ASPM  L1
> [    5.840055] e1000e 0000:01:00.0: probe with driver e1000e failed with error -12
> `````````````````````````````````````````````````````````````````````````````````
> After bisecting the tree, the following patch [3] seems to be the first "bad"
> commit
> 
> `````````````````````````````````````````````````````````````````````````````````````````````````````````
> commit 7d90d8d2bb1bfff8b33acbb6f815cba6f5250fad
> Author: Bjorn Helgaas mailto:bhelgaas at google.com
> Date:   Fri Feb 14 18:03:00 2025 -0600
> 
>     PCI: Avoid pointless capability searches
> 
>     Many of the save/restore functions in the pci_save_state() and
>     pci_restore_state() paths depend on both a PCI capability of the device and
>     a pci_cap_saved_state structure to hold the configuration data, and they
>     skip the operation if either is missing.
> `````````````````````````````````````````````````````````````````````````````````````````````````````````
> 
> We verified that if we revert the patch the issue is not seen.

Sorry about this; this patch was dropped in next-20250224

Bjorn