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From: Yazen Ghannam <yazen.ghannam@amd.com>
To: "Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>,
	"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
	<x86@kernel.org>,
	"open list:AMD NODE DRIVER" <linux-kernel@vger.kernel.org>,
	regressions@lists.linux.dev
Subject: Re: kernel NULL pointer dereference in quirk_clear_strap_no_soft_reset_dev2_f0 -> amd_smn_read
Date: Fri, 30 Jan 2026 12:01:06 -0500	[thread overview]
Message-ID: <20260130165953.GA1618638@yaz-khff2.amd.com> (raw)
In-Reply-To: <aWWZb3eRfQdB4OsI@mail-itl>

On Tue, Jan 13, 2026 at 02:01:34AM +0100, Marek Marczykowski-Górecki wrote:
> Hi,
> 
> I've got a report that kernel 6.17.9 crashes when running a Xen HVM domU
> with AMD Raphael/Granite Ridge USB controller passed through.
> It worked correctly in 6.12.59. Between those versions, I don't see any
> relevant change to quirk_clear_strap_no_soft_reset_dev2_f0() function,
> but the AMD node driver did got some changes, so my guess is one of them
> is to blame. I know the good-bad range is huge, but there aren't that
> many changes to the AMD node driver in this range.
> 
> It's running on Qubes OS 4.3, which uses Xen 4.19, and does PCI
> passthrough of USB controllers to a dedicated VM (HVM).
> 

Hi Marek,

Can you please test with the following patch?
adbf61cc47cb ("x86/acpi/boot: Correct acpi_is_processor_usable() check again")

This is in the TIP maintainers repo and linux-next.

Thanks,
Yazen

  parent reply	other threads:[~2026-01-30 17:01 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-13  1:01 Marek Marczykowski-Górecki
2026-01-13  2:47 ` Mario Limonciello
2026-01-13 16:04   ` Borislav Petkov
2026-06-05 17:34   ` Marek Marczykowski-Górecki
2026-06-05 17:36     ` Mario Limonciello
2026-06-05 17:45       ` Marek Marczykowski-Górecki
2026-06-05 18:54         ` Mario Limonciello
2026-06-05 20:23           ` Marek Marczykowski-Górecki
2026-06-05 21:15             ` Borislav Petkov
2026-06-05 21:55               ` Marek Marczykowski-Górecki
2026-06-05 22:26                 ` Borislav Petkov
2026-06-05 22:40                   ` Marek Marczykowski-Górecki
2026-06-05 23:09                     ` Borislav Petkov
2026-06-05 23:37                       ` Marek Marczykowski-Górecki
2026-06-06  1:59                         ` Borislav Petkov
2026-01-30 17:01 ` Yazen Ghannam [this message]
2026-02-07  1:57   ` Marek Marczykowski-Górecki

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