linux-kernel - Re: Fwd: Kernel 6.5.2 Causes Marvell Technology Group 88SE9128 PCIe SATA to Constantly Reset

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Date:   Wed, 13 Sep 2023 15:12:04 +0000
From:   Niklas Cassel <Niklas.Cassel@....com>
To:     Bagas Sanjaya <bagasdotme@...il.com>
CC:     Damien Le Moal <dlemoal@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        patenteng <dimitar@...kalov.co.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux IDE and libata <linux-ide@...r.kernel.org>,
        Linux PCI <linux-pci@...r.kernel.org>
Subject: Re: Fwd: Kernel 6.5.2 Causes Marvell Technology Group 88SE9128 PCIe
 SATA to Constantly Reset

On Wed, Sep 13, 2023 at 06:25:31PM +0700, Bagas Sanjaya wrote:
> Hi,
> 
> I notice a regression report on Bugzilla [1]. Quoting from it:
> 
> > After upgrading to 6.5.2 from 6.4.12 I keep getting the following kernel messages around three times per second:
> > 
> > [ 9683.269830] ata16: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
> > [ 9683.270399] ata16.00: configured for UDMA/66
> > 
> > So I've tracked the offending device:
> > 
> > ll /sys/class/ata_port/ata16
> > lrwxrwxrwx 1 root root 0 Sep 10 21:51 /sys/class/ata_port/ata16 -> ../../devices/pci0000:00/0000:00:1c.7/0000:0a:00.0/ata16/ata_port/ata16
> > 
> > cat /sys/bus/pci/devices/0000:0a:00.0/uevent
> > DRIVER=ahci
> > PCI_CLASS=10601
> > PCI_ID=1B4B:9130
> > PCI_SUBSYS_ID=1043:8438
> > PCI_SLOT_NAME=0000:0a:00.0
> > MODALIAS=pci:v00001B4Bd00009130sv00001043sd00008438bc01sc06i01
> > 
> > lspci | grep 0a:00.0
> > 0a:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9128 PCIe SATA 6 Gb/s RAID controller with HyperDuo (rev 11)
> > 
> > I am not using the 88SE9128, so I have no way of knowing whether it works or not. It may simply be getting reset a couple of times per second or it may not function at all.
> 
> See Bugzilla for the full thread.
> 
> patenteng: I have asked you to bisect this regression. Any conclusion?
> 
> Anyway, I'm adding this regression to regzbot:
> 
> #regzbot: introduced: v6.4..v6.5 https://bugzilla.kernel.org/show_bug.cgi?id=217902

Hello Bagas, patenteng,


FYI, the prints:
[ 9683.269830] ata16: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 9683.270399] ata16.00: configured for UDMA/66

Just show that ATA error handler has been invoked.
There was no reset performed.

If there was a reset, you would have seen something like:
[    1.441326] ata8: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    1.541250] ata8.00: configured for UDMA/133
[    1.541411] ata8: hard resetting link


Could you please try this patch and see if it improves things for you:
https://lore.kernel.org/linux-ide/20230913150443.1200790-1-nks@flawful.org/T/#u


Kind regards,
Niklas