From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from master.debian.org (master.debian.org [82.195.75.110]) (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 05F403D544 for ; Mon, 16 Feb 2026 16:04:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=82.195.75.110 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771257856; cv=none; b=j1Z/Tj9hI5RA+tBgDYBPCQI9qBTePyz6Kg+5ExArcYJJnSymDS1tSkJBomPzv8YRZg+UmgBiOgnI7EozLoOvvnlvRcS1Gxn24ussi2sbPkHoDcL8+YhNKU17xeZq4s2TjtlJhZXjITYaO2CCpHA20kJqJCpbnTf5Fn9YxWyFEfQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771257856; c=relaxed/simple; bh=xAEiCEGy1ukqJRRjd5pyKMCVGPfix/yhUFowP0rVoaU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=iScV9HwaZ5NhIPGK14yYQk8tfOrnHsCTXf6SRuPza0XYQyJQHTU3Lnd8FU7lv2YYkDAA8o8Owy9lOiZpi57Upddfme+VO9q/lD23jQ6QOCCOjswD8C3qB81sk3OtK+PBHvsi1ZFuxhJwPX1J2cC1OBVXbQ/YSPfxsDdsiQM3aRs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=debian.org; spf=none smtp.mailfrom=master.debian.org; dkim=pass (2048-bit key) header.d=debian.org header.i=@debian.org header.b=rijJVYcY; arc=none smtp.client-ip=82.195.75.110 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=debian.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=master.debian.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=debian.org header.i=@debian.org header.b="rijJVYcY" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=debian.org; s=smtpauto.master; h=In-Reply-To:Content-Type:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description; bh=FW8csEJNcE/VnBJ7ybDkpUlbyzrLedHDeU/cuXm6UDg=; b=rijJVYcYX9UCXMFEX2m8Ifmiiu U5BWvBT0vo1N9scP8SP8LB+pIq3XcJG0DPJisoBSsIL5ouFNoVYMn0Ymop1J5v5IhFzRX2tePaMph rZ7bB2yTD3P4SSPyErIsSPr+jpGZLBAXMpaOwphx2aJ8Cp+MFM4V8V49WWQT3JJiiXT+IypAIDAGB +r2bEiVNoJGjm2AmenIuU50inxMB5jlpq5OCLdqIFrU+62puDDJg1K3XINtuWafKqsONeAxQspzGW vVv9nHPCZDhlv3pZmU/tygSXEpmoJlFTdnPvgmH14TqVOacjAz++8UXJac6iopjbJXZ8HumKycj3C QfIu09GQ==; Received: from ukleinek by master.debian.org with local (Exim 4.96) (envelope-from ) id 1vs0c2-0093O5-0D; Mon, 16 Feb 2026 15:34:14 +0000 Date: Mon, 16 Feb 2026 16:34:08 +0100 From: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= To: Paul Kerry , 1127612@bugs.debian.org Cc: Jorge Lopez , platform-driver-x86@vger.kernel.org, Mario Limonciello Subject: Re: Bug#1127612: linux-image-6.12.69+deb13-amd64: hp_bioscfg mm/page_alloc.c:4802 warning Message-ID: References: Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="7pcynfimjzdg7ckr" Content-Disposition: inline In-Reply-To: --7pcynfimjzdg7ckr Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Subject: Re: Bug#1127612: linux-image-6.12.69+deb13-amd64: hp_bioscfg mm/page_alloc.c:4802 warning MIME-Version: 1.0 Control: forwarded -1 https://lore.kernel.org/all/aZMt6sSlpKK_JAdT@monoceros Hello Paul, On Tue, Feb 10, 2026 at 12:19:45PM +0000, Paul Kerry wrote: > Subject: linux-image-6.12.69+deb13-amd64: hp_bioscfg mm/page_alloc.c:4802 warning > Package: src:linux > Version: 6.12.69-1 > Severity: normal > X-Debbugs-Cc: p.kerry@sheffield.ac.uk > Dear Maintainer, > *** Reporter, please consider answering these questions, where appropriate *** > * What led up to the situation? > Booting a system into the recent debian 6.12.69+deb13-amd64 kernel upgrade from 6.12.63+deb13-amd64 Probably the relevant difference between these two kernel versions is commit b2e79963525205707c87391a01435cfdc9fc2d1e (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.12.y&id=b2e79963525205707c87391a01435cfdc9fc2d1e). Can you confirm that when booting the older kernel, running modprobe hp_bioscfg will break in the same way as the new kernel? If so, the driver was broken already before and just unused. You can achieve this behaviour with 6.12.69, too, by blacklisting the hp_bioscfg module. Either by adding: module_blacklist=hp_bioscfg on the kernel command line, or echo blacklist hp_bioscfg >> /etc/modprobe.d/broken-hp-bioscfg.conf update-initramfs -k all -u > * What exactly did you do (or not do) that was effective (or > ineffective)? > n/a > * What was the outcome of this action? > dmesg under 6.12.69+deb13-amd64 is now displaying the following... > [ 3.346704] ------------[ cut here ]------------ > [ 3.347194] WARNING: CPU: 11 PID: 606 at mm/page_alloc.c:4802 __alloc_pages_noprof+0x2a7/0x310 This is if (WARN_ON_ONCE_GFP(order > MAX_PAGE_ORDER, gfp)) return NULL; which is probably triggered by bioscfg_drv.enumeration_data = kcalloc(bioscfg_drv.enumeration_instances_count, sizeof(*bioscfg_drv.enumeration_data), GFP_KERNEL); I manually determined sizeof(*bioscfg_drv.enumeration_data) to be around 20K. I have no idea about what the driver does here, but it seems to request more than 2**10 pages continuous pages here which suggests that bioscfg_drv.enumeration_instances_count, is bigger than 200. @Jorge: Is that expected? I dropped much context (mostly automatically collected information about the machine where this triggered). If you're intested in that, check out https://bugs.debian.org/1127612. Best regards Uwe --7pcynfimjzdg7ckr Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmmTOOIACgkQj4D7WH0S /k655gf7BYwadASf0/z9WnkbUgSemPpovHXczhrSVMORilULBVZntwMijweu1QQJ B4JDDRu777kdrkfLcW13LKDuzBa64bFWGWSv0qk9xQuF28CVLKVj+z2VjSzGR1fV l9rVV51pw7fvRtHdg5T66dqTsORILC1hpHxW/CXIFGThhTNfV+bDKITDAFYAvjpC 1lDuUtD3yhpfJZKKGqBEKtDNqDBzCAQ1l44oEEn70ARs5EEhAx+Ob7XBx6bguWU/ x3Vz7HeHvsBlk6ksDEqCniwwm59/v8fGQx6/UVSd2/Qge4nZFWZk+Wc0LI0SKKgK tw2l414dKBpzZK9IBADzugCRd89t0A== =3xX1 -----END PGP SIGNATURE----- --7pcynfimjzdg7ckr--