linux-kernel - RE: [PATCH] EDAC/Intel: Fix shift-out-of-bounds when DIMM/NVDIMM is absent

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Message-ID: <CY8PR11MB713477E4E5A303D3A1091A1E892CA@CY8PR11MB7134.namprd11.prod.outlook.com>
Date:   Thu, 6 Jul 2023 14:19:13 +0000
From:   "Zhuo, Qiuxu" <qiuxu.zhuo@...el.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>,
        "Luck, Tony" <tony.luck@...el.com>, Koba Ko <koba.ko@...onical.com>
CC:     "kao, acelan" <acelan.kao@...onical.com>,
        Borislav Petkov <bp@...en8.de>,
        James Morse <james.morse@....com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Robert Richter <rric@...nel.org>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] EDAC/Intel: Fix shift-out-of-bounds when DIMM/NVDIMM is
 absent

> From: Kai-Heng Feng <kai.heng.feng@...onical.com>
> ...
> > > > Some "lspci" output may also be useful.
> > >
> > > lspci can be found in [1]:
> > >
> > > [1] https://bugzilla.kernel.org/show_bug.cgi?id=217453
> >
> > A gentle ping...
> 
> Another gentle ping...

The same issue was also reported recently by Koba Ko:
    https://lore.kernel.org/linux-edac/CAJB-X+XtfBm0a4btt6NT9rvdrxETNLNMVQ3G=u513Nh8RKwjWw@mail.gmail.com/T/#t

The root cause of this issue was that the absent memory controllers still 
appeared as PCIe devices that fooled the i10nm_edac driver.

Could you please verify the new fix patch below on your machine
and feedback on the testing results? Thanks!
    https://lore.kernel.org/linux-edac/20230706134216.37044-1-qiuxu.zhuo@intel.com/T/#u

- Qiuxu