From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6331DD3B7EA for ; Mon, 8 Dec 2025 20:58:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bzbzCuPdi7bYec+6Ex/BOPynvEFeNjuO2uRV7erU3cY=; b=cCKD44KiybJ0Of 4LCOQ2fyI2z+93aRYAGD/Nvq0DN9Se7wRyers27N4WVDsHB9o1u3i4yiFi5cuSjlPHNW1f/b32zXq saDayJZoQIvBnTASZAoiHSmlZNhAsOLOF/zbSoB13nbaMPb2fL4PnFVoFqhg+3BqTwV2jVR72vrEd vK7qxzDUs6H7j2BCpaYPjviZsRfA3Vv1JcK+Mt3kGNMnvMCoboWiOx0LQIPP37cG7NGgoiZSoMB4u JZrxjVr2ymstFhWMptlLLB9hGA98fMJd+NCmR8ikazDV/j1jtaavvWrRyOpIo3tJGxsmtBu0ad65y fVqDRJkwtuJQy75RKa4A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vSiJn-0000000DXIh-1uUD; Mon, 08 Dec 2025 20:58:51 +0000 Received: from smtpout-04.galae.net ([185.171.202.116]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vSiJi-0000000DXI3-3K5V for linux-i3c@lists.infradead.org; Mon, 08 Dec 2025 20:58:49 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id BA593C180D2 for ; Mon, 8 Dec 2025 20:58:19 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7F420606DD; Mon, 8 Dec 2025 20:58:43 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 65C04103C8E53; Mon, 8 Dec 2025 21:58:41 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1765227523; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=5kOlrp0GAPC3YlAOAn7z0/z8R1NasToaDwdGWoi8Mx8=; b=TJeI5O3WxcTByeZyDFTttSmGQiBMvB75yb1QUT6NLxUzM14yGDFpKCjXalsfjFUIr4+0Sw u4e3Ps3+BZfFL9NCMBKPWa5aatgddecN9Nqw8YPRZgFaCpGNaU19fEtnTc2BQ6EistXT4Z 2GQC5/DXTwEz1PnTv8+sNIsDrv7tCyWGClJi3hUWxovmv2LqlEKCf2f1oVuAus1lfXAU9M kPtyNO5NkjvgOh7iIjb++bUnDpRAglVjIu6dYfM87VI3F3mibRzDXDqOY5COIIn9/Ro6J/ l0KOdOblRhOK6TQ4hUjUU4Ox6RPu2kKv4uiKeNJfbgeBoBOpHWjMGnceHaO9MQ== Date: Mon, 8 Dec 2025 21:58:40 +0100 From: Alexandre Belloni To: Louis Sautier Cc: linux-i3c@lists.infradead.org Subject: Re: Error while loading dw-i3c-master: UBSAN: shift-out-of-bounds in drivers/i3c/master/dw-i3c-master.c:885:12 Message-ID: <202512082058408ee92ee8@mail.local> References: <66f5e4db-ac20-4bec-a437-af86aad1f56e@ovhcloud.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <66f5e4db-ac20-4bec-a437-af86aad1f56e@ovhcloud.com> X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251208_125847_349651_18B1F37B X-CRM114-Status: GOOD ( 11.04 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org Hello Louis, On 02/12/2025 21:17:31+0100, Louis Sautier wrote: > Hello, > = > I'm running into a bug when loading the dw-i3c-master module on kernel 6.= 18 > on one specific server. I suspect it has to do with the large number of > CPUs=A0on the machine=A0(768 threads, from 2 AMD EPYC 9965 processors) bu= t I am > not sure. > = > The system is on Ubuntu 25.10 and a 6.18 kernel with https://gist.githubu= sercontent.com/sbraz/a6f37fafbcf9354bbe4eace9e9eb48cb/raw/115da594dc9d7ea99= b06754847571e6fd76d9da5/config > (basically Ubuntu's). Just to be sure, does this also happen with v6.17? The only change is the shutdown handling so I would guess yes. -- = Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com -- = linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c