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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 56E4BCCFA1A for ; Tue, 11 Nov 2025 15:30:34 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4d5Vpw569zz2yvL; Wed, 12 Nov 2025 02:30:32 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=172.234.252.31 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1762875032; cv=none; b=O3ZRDzVCTAfMBJmZMKT/hThaGOXoOfX+FQOkF2P98ENH9GwoD8brFTeS2W3C5Cu3pg1yD330lAod4P3YCm7LcfP88TIjJUxOm7JAtTaCHeoomWgR07uWrJ+G3K5BvXAPJ/vi3hQGVNKPEnTyAMJU80Nv+g90MarqUnEoLyja4c61fceY4t2ux63PKOnoxqL0LwuXdI2B6RJ6qPHJcO6N/v/prKKXZECv3crJ/kae1rKJv1MvpmNwhh3mXPzRtE1GT4Ym9LAWjQI9BTLuiPljb6jSQxPEqiMAgWjHJAA1I1EeE2afSBoZQdGE62e093Bk1sIiGqXRC9THyFdT2Yg7vQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1762875032; c=relaxed/relaxed; bh=8Pw/Yf1EyXLxumJHa6e0BLxzdUgB/dz1CtlovqWJ51Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=BM7MaWh7wSg8NP6Z7nl99t/CY75Hz/7i98mUleSXJIDO2xptB/05CJReYR/gK/cFvDw1nmp66rIXUAR6LVJSNTw0pPkxCj9quBvx9GdePmNGwHGWoQg173y++BKoqCf9iy8zY9rHneXMasltXMICDrbZvpKRPCJRdKb81Wxmdd8F0sDkW9nSpqPAp5Y1CwmWsFzweJI7j47MH1yPrazEpjaRG2ZWurJrdQdvxbO67bmKVe39b971tjhdCtHTBdPa2mEMnSCiQfVWNNuh1EOBMTERbpGvRC5X0DLYqpm2qHrObhMbm8Tgzel17X1QwVkubZwzydfhUUi30/kl45P4Kw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=dShHYiQt; dkim-atps=neutral; spf=pass (client-ip=172.234.252.31; helo=sea.source.kernel.org; envelope-from=kbusch@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=dShHYiQt; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=172.234.252.31; helo=sea.source.kernel.org; envelope-from=kbusch@kernel.org; receiver=lists.ozlabs.org) Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4d5Vpv6bcPz2ySq for ; Wed, 12 Nov 2025 02:30:31 +1100 (AEDT) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 50D34446FE; Tue, 11 Nov 2025 15:30:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9E53DC113D0; Tue, 11 Nov 2025 15:30:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762875028; bh=JkOquQXq7D/0AkSwonMEbLe8hcwxVugxIK3xFxSoQps=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dShHYiQtHGA+ufP4vo5h3F0Xob3mIuE7icZs/Ve89M09D9MuCRNNb+OTZUCX/U92f PGaoyoj4XQ41J8b0VR7zB87qGnrC3UzrRCRX9ft2tsaFiFw6bmVrWguIkk5+XAwcBA +5w0GWz8ntMQS07o7BzHQDmJOWAymQDu27hmN1IxUSkZBgH0p2lFvtyk4mpxuoCheM t7D/F7g5oCcQb+HzyvfxFwglHAqy048nGtxRGiHTuzVX1HR3OnB8aOwJCABUqFJl2O I0fC7CdXp+RAp4WuqUfZHET9vsXmZDtPfRvm1DO7bk4xkHJT+gZs+W81eV5Tm7gcyd X0DCfZmYXXHVw== Date: Tue, 11 Nov 2025 10:30:25 -0500 From: Keith Busch To: Venkat Rao Bagalkote Cc: LKML , linuxppc-dev , Madhavan Srinivasan , riteshh@linux.ibm.com, ojaswin@linux.ibm.com, Stephen Rothwell , hch@lst.de, martin.petersen@oracle.com, Jens Axboe Subject: Re: [linux-next20251111]KASAN null-ptr-deref in bio_get_last_bvec() after "block: accumulate memory segment gaps per bio" Message-ID: References: <3349ddbd-ec27-431b-a5f3-de0137d26a4b@linux.ibm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3349ddbd-ec27-431b-a5f3-de0137d26a4b@linux.ibm.com> On Tue, Nov 11, 2025 at 08:54:39PM +0530, Venkat Rao Bagalkote wrote: > Greetings!!! > > IBM CI has reported a null pointer dereference, while running xfstests. Thanks, this bug was also reported late yesterday and a proposed fix was posted just earlier today: https://lore.kernel.org/linux-block/20251111140620.2606536-1-kbusch@meta.com/