From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 00BA133067A; Tue, 17 Mar 2026 11:47:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773748075; cv=none; b=IpzIUAzjz7AaJIGT9QieFZZDM27rKRAK/YpXzoaEk+iDPtrcPP3RBvbG4Wjg34Dbfk3p/IA96dHY+sImmXQY1keRND8FbnDjeJ9DyECWmXvNFwJMpfYEpwmeRWrCGizSKSVIYzqacBQKFX9chPz2lJOEzlYzxL/C+k9QDV82ACU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773748075; c=relaxed/simple; bh=JdQasyzbMwQG4UJ6BxEFeSmYOOI5nM9Nngo91aNREe4=; h=From:Date:To:cc:Subject:In-Reply-To:Message-ID:References: MIME-Version:Content-Type; b=hOby9TVlMI3y/K8F/89/BDLsbw2xNjUgPgpjPmrk2WKYEw1WPRPI7/CcYmWa06MKlglG2wU/TFIfGZ6H8jIEHbK4IjMicYa5y4r8MVdix61uQhAIsDSn2lKpqhU6M6oCLLYZkapzeeGoNqbbZHjWHNorNKsPx5+QISz1fZNihaU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=aJUpCofq; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="aJUpCofq" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1773748074; x=1805284074; h=from:date:to:cc:subject:in-reply-to:message-id: references:mime-version:content-id; bh=JdQasyzbMwQG4UJ6BxEFeSmYOOI5nM9Nngo91aNREe4=; b=aJUpCofqHY+HWqwh996zR8i7kSfnrK6G/UaywDrtiISkgejpu5YN/B9u yxAjIvpJro1Y/zj1jChWV/pIDFiUZXhMOUly6uV35vz5ALCrasVYgLH2P M9Xrt5ZD6Hbx4km5q+4WF+LQqfO9GH364Llaq35U5oQWXPwqssh5A8d+a X3jvQiiOOeQ/bs5uqYGtmslvalnHnxB33l0rx25knds1hpNJ94+17IWGr xQJg37yoa00DB1x2pcJ3jIE8yjCWOuYwiUjIkYvmqbac4Kqv2xN9ZrHPv dc4qXV/fTFdRBB9sLto4HhMnBNbxi1r6ZSleyloq2+urEABqFKcl469Oj g==; X-CSE-ConnectionGUID: 1kVz/8rVRH+4sKLo7W6+cw== X-CSE-MsgGUID: VhxcF7yxSNqXqGpwKXo5OA== X-IronPort-AV: E=McAfee;i="6800,10657,11731"; a="74894413" X-IronPort-AV: E=Sophos;i="6.23,124,1770624000"; d="scan'208";a="74894413" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2026 04:47:53 -0700 X-CSE-ConnectionGUID: xoXiTkqNTdiMkqPkFoJ4kQ== X-CSE-MsgGUID: JCFW171WTKSqFvCJxs7QSQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,124,1770624000"; d="scan'208";a="227217242" Received: from egrumbac-mobl6.ger.corp.intel.com (HELO localhost) ([10.245.245.161]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2026 04:47:51 -0700 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Date: Tue, 17 Mar 2026 13:47:46 +0200 (EET) To: Bjorn Helgaas cc: =?ISO-8859-2?Q?Micha=B3_Pecio?= , linux-pci@vger.kernel.org, Bjorn Helgaas , LKML , regressions@lists.linux.dev Subject: Re: [REGRESSION 6.14] Some PCI device BARs inacessible In-Reply-To: <20260316201651.GA23314@bhelgaas> Message-ID: <12da4009-3f6e-3fea-8d21-f8c9d66f7102@linux.intel.com> References: <20260316201651.GA23314@bhelgaas> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/mixed; BOUNDARY="8323328-1619845209-1773747867=:968" Content-ID: <74457b6c-5b44-7f35-8488-74f2c85f7fe9@linux.intel.com> This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323328-1619845209-1773747867=:968 Content-Type: text/plain; CHARSET=ISO-8859-2 Content-Transfer-Encoding: QUOTED-PRINTABLE Content-ID: <5749c0c7-bac2-95bc-1be3-cdfecc78e941@linux.intel.com> On Mon, 16 Mar 2026, Bjorn Helgaas wrote: > [+cc Ilpo, +bcc bugzilla reporters and commenters] >=20 > On Fri, Apr 18, 2025 at 10:29:26AM +0200, Micha=B3 Pecio wrote: > > Hi, > >=20 > > This is a heads up that an apparent PCI regression has been reported > > and mistakenly assigned to USB in the kernel bugzilla: > >=20 > > https://bugzilla.kernel.org/show_bug.cgi?id=3D220016 > >=20 > > Visible symptom is missing USB devices, but the whole controller fails > > to probe, apparently due to devm_request_mem_region() returning NULL, > > see drivers/usb/core/hcd-pci.c and usb_hcd_pci_probe(). > >=20 > > Same systems also show a similar failure with some AHCI controller. > > It seems specific to particular ASUS AMD motherboards. > >=20 > > Somebody found that disabling CONFIG_PCI_REALLOC_ENABLE_AUTO helps. > >=20 > > That's all I know, reporters can be reached via bugzilla. >=20 > I see some activity in the bugzilla but no resolution. Ilpo has done > a lot of work in this area since v6.14, though, so I wouldn't be > surprised at all if this has been fixed.=20 >=20 > Would anybody be interested in testing v6.19 or v7.0-rc to see if this > problem still exists? My plan was to look at this ticket again anyway (or has been for like a=20 few months now but there has been higher prio items get in the way of=20 looking the ticket up). (It went to lower prio bin once it was determined it was not a real regression but fc enabling pci=3Drealloc. Despite that, I'd still want to= =20 have it fixed eventually.) --=20 i. --8323328-1619845209-1773747867=:968--