From: Bjorn Helgaas <helgaas@kernel.org>
To: "Krzysztof Hałasa" <khalasa@piap.pl>
Cc: "Pali Rohár" <pali@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Gregory Clement" <gregory.clement@bootlin.com>,
"Andrew Lunn" <andrew@lunn.ch>,
"Krzysztof Wilczyński" <kw@linux.com>
Subject: Re: PCI: Race condition in pci_create_sysfs_dev_files (can't boot)
Date: Thu, 20 Jan 2022 17:00:50 -0600 [thread overview]
Message-ID: <20220120230050.GA1077958@bhelgaas> (raw)
In-Reply-To: <m3eebg9puj.fsf@t19.piap.pl>
On Fri, Jul 30, 2021 at 10:18:44AM +0200, Krzysztof Hałasa wrote:
> Pali, et al,
>
> I'm encountering a problem booting an i.MX6-based device (Gateworks
> Ventana SBC). This is apparently a known issue:
> https://lkml.org/lkml/2020/7/16/388
>
> Do you guys know of a fix for this? Booting this machine reliably is
> lately impossible.
Hi Krzysztof, is this still an issue?
e1d3f3268b0e ("PCI/sysfs: Convert "config" to static attribute") and
similar patches appeared in v5.13, and they should resolve things like
this:
sysfs: cannot create duplicate filename '/devices/platform/soc/d0070000.pcie/pci0000:00/0000:00:00.0/config'
But your report is different because it looks like we have a problem
when creating a *directory*:
> sysfs: cannot create duplicate filename '/devices/platform/soc/1ffc000.pcie/pci0000:00/0000:00:00.0/0000:e0'
and then it seems that we corrupted a pointer:
> Unable to handle kernel paging request at virtual address 6f736572 (ASCII = "reso")
which is even more worrisome.
Bjorn
next prev parent reply other threads:[~2022-01-20 23:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-30 8:18 PCI: Race condition in pci_create_sysfs_dev_files (can't boot) Krzysztof Hałasa
2021-07-30 9:49 ` Pali Rohár
2022-01-20 23:00 ` Bjorn Helgaas [this message]
2022-01-21 7:14 ` Krzysztof Hałasa
2022-01-21 16:57 ` Bjorn Helgaas
2022-01-31 11:56 ` Krzysztof Hałasa
2022-02-08 23:40 ` Bjorn Helgaas
2022-02-11 12:31 ` Krzysztof Hałasa
2022-02-15 6:35 ` Krzysztof Hałasa
2022-04-01 13:50 ` Koen Vandeputte
2022-04-06 14:08 ` Koen Vandeputte
2022-04-13 12:52 ` Koen Vandeputte
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