Linux PCI subsystem development
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From: Lukas Wunner <lukas@wunner.de>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: linux-pci@vger.kernel.org,
	"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Subject: Re: [Bug 219906] New: Kernel Oops in pcie_update_link_speed when hotplugging TB4 dock on x870e / kernel 6.14.0-rc7
Date: Fri, 21 Mar 2025 20:35:52 +0100	[thread overview]
Message-ID: <Z92_mHU3CcTXdaKV@wunner.de> (raw)
In-Reply-To: <20250321191504.GA1139362@bhelgaas>

On Fri, Mar 21, 2025 at 02:15:04PM -0500, Bjorn Helgaas wrote:
> On Fri, Mar 21, 2025 at 06:30:40PM +0000, bugzilla-daemon@kernel.org wrote:
> > https://bugzilla.kernel.org/show_bug.cgi?id=219906
> > 
> >             Bug ID: 219906
> >            Summary: Kernel Oops in pcie_update_link_speed when hotplugging
> >                     TB4 dock on x870e / kernel 6.14.0-rc7
> 
> Do you know whether this is a regression?  Does any kernel work
> correctly on the system in question?

This is a regression caused by

    commit 665745f274870c921020f610e2c99a3b1613519b
    Author: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
    Date:   Fri Oct 18 17:47:52 2024 +0300

    PCI/bwctrl: Re-add BW notification portdrv as PCIe BW controller

which went into v6.13-rc1.  It can be overcome by duplicating

    commit 62e4492c3063048a163d238cd1734273f2fc757d
    Author: Andreas Noever <andreas.noever@gmail.com>
    Date:   Mon Jun 9 23:03:32 2014 +0200

    PCI: Prevent NULL dereference during pciehp probe

in the bandwidth controller driver.

I can submit a patch tomorrow unless you or Ilpo beat me to it.
(Sorry, I'm still a little sleep deprived today after OSPM Summit.)

Thanks,

Lukas

  reply	other threads:[~2025-03-21 19:36 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-219906-41252@https.bugzilla.kernel.org/>
2025-03-21 19:15 ` [Bug 219906] New: Kernel Oops in pcie_update_link_speed when hotplugging TB4 dock on x870e / kernel 6.14.0-rc7 Bjorn Helgaas
2025-03-21 19:35   ` Lukas Wunner [this message]
2025-03-21 19:41   ` Wouter Bijlsma

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