linux-kernel - RE: HW power fault defect cause system hang on kernel 5.4.y

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Message-ID: <DM8PR11MB5702198ABAD1DF43237CC1D586959@DM8PR11MB5702.namprd11.prod.outlook.com>
Date:   Fri, 12 Nov 2021 01:47:41 +0000
From:   "Bao, Joseph" <joseph.bao@...el.com>
To:     Krzysztof Wilczyński <kw@...ux.com>
CC:     Bjorn Helgaas <helgaas@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Stuart Hayes <stuart.w.hayes@...il.com>,
        Lukas Wunner <lukas@...ner.de>, Sasha Levin <sashal@...nel.org>
Subject: RE: HW power fault defect cause system hang on kernel 5.4.y

Yeah, other people may encounter a similar issue, I've created https://bugzilla.kernel.org/show_bug.cgi?id=214989 for reference including the patch from Stuart.

Regards
Joseph

-----Original Message-----
From: Krzysztof Wilczyński <kw@...ux.com> 
Sent: Friday, November 12, 2021 8:44 AM
To: Bao, Joseph <joseph.bao@...el.com>
Cc: Bjorn Helgaas <helgaas@...nel.org>; Bjorn Helgaas <bhelgaas@...gle.com>; linux-pci@...r.kernel.org; linux-kernel@...r.kernel.org; Stuart Hayes <stuart.w.hayes@...il.com>; Lukas Wunner <lukas@...ner.de>; Sasha Levin <sashal@...nel.org>
Subject: Re: HW power fault defect cause system hang on kernel 5.4.y

[+CC Adding Sasha for visibility]

> Thanks for the encouragement! Stuart already helps patch the hang 
> issue, do I still go an open a report at https://bugzilla.kernel.org?

I am not sure what Bjorn would say here, however personally I say that it would be nice if you do open a bug there, if you have a minute, as it might help someone else who would stumble into this issue - a lot of people searches through Kernel's Bugzilla as part of their troubleshooting.

Also, as this is a hang in 5.4, and a lot of people uses this kernel, it might warrant a back-port to stable and long-term kernels.

	Krzysztof