linux-kernel - pcieport AER error spam on Intel Skylake

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Message-ID: <CAD8Lp44cpj0Z3aadOzW=Lc=m88AbQpaW3g=GCgtpvbpGATT7uw@mail.gmail.com>
Date:	Wed, 2 Sep 2015 16:01:13 -0600
From:	Daniel Drake <drake@...lessm.com>
To:	linux-pci@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	Carlo Caione <carlo@...lessm.com>
Subject: pcieport AER error spam on Intel Skylake

Hi,

Working with a sample for a new laptop based on Intel Skylake, the
kernel logs are full of these messages:

 pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
 pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected,
type=Physical Layer, id=00e5(Receiver ID)
 pcieport 0000:00:1c.5:   device [8086:9d15] error status/mask=00000001/00002000
 pcieport 0000:00:1c.5:    [ 0] Receiver Error         (First)
 pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
 pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected,
type=Physical Layer, id=00e5(Receiver ID)
 pcieport 0000:00:1c.5:   device [8086:9d15] error status/mask=00000001/00002000
 pcieport 0000:00:1c.5:    [ 0] Receiver Error         (First)
 pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
 pcieport 0000:00:1c.5: can't find device of ID00e5

Reproduced on 4.2 and on linus master as of today, using x86_64_defconfig.

Apart from the log spam, there is no user-visible effect that I'm
aware of. Booting with pci=nomsi makes the messages go away.

Any thoughts, is this something worth looking into in more detail?

full dmesg: https://gist.github.com/dsd/1d7f738e917465edf2ae
lspci dump: https://gist.github.com/dsd/dc2481d64aadd520b0b3

Thanks,
Daniel
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