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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7429C63797 for ; Mon, 16 Jan 2023 15:00:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232953AbjAPPAi (ORCPT ); Mon, 16 Jan 2023 10:00:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232745AbjAPO7Z (ORCPT ); Mon, 16 Jan 2023 09:59:25 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0BA422DF7; Mon, 16 Jan 2023 06:49:46 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5A6DE60FD7; Mon, 16 Jan 2023 14:49:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6924DC433EF; Mon, 16 Jan 2023 14:49:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1673880585; bh=pdrPQuiDmmHjQzGsq5CHxSZmPxA94iY0FlqhGnDMkMg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=pLE1itkAnZJ6raVfPf71HgORB5bnzRcVqhxTUbFmwIXShDqSXBGlKa9NUznOZylpc 3sGn3zLCVnrUCxi6rMNn9KTLkbH6JDquzjD+vrKn36Id0FoliZoy/Jlp/KRuFGmZgW G+M2JOER0LImB0dLCo5wNk/hHnTnd9BvJJ7i9y0E= Date: Mon, 16 Jan 2023 15:49:43 +0100 From: Greg Kroah-Hartman To: Jens Axboe Cc: Linux regressions mailing list , "stable@vger.kernel.org" , io-uring@vger.kernel.org, LKML , "Sergey V." Subject: Re: [regression] =?iso-8859-1?Q?Bug=A02169?= =?iso-8859-1?Q?32_-_io=5Furing_with_libvir?= =?iso-8859-1?Q?t?= cause kernel NULL pointer dereference since 6.1.5 Message-ID: References: <74347fe1-ac68-2661-500d-b87fab6994f7@leemhuis.info> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Mon, Jan 16, 2023 at 07:13:40AM -0700, Jens Axboe wrote: > On 1/16/23 6:42 AM, Jens Axboe wrote: > > On 1/16/23 6:17?AM, Linux kernel regression tracking (Thorsten Leemhuis) wrote: > >> Hi, this is your Linux kernel regression tracker. > >> > >> I noticed a regression report in bugzilla.kernel.org. As many (most?) > >> kernel developer don't keep an eye on it, I decided to forward it by > >> mail. Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=216932 : > > > > Looks like: > > > > commit 6d47e0f6a535701134d950db65eb8fe1edf0b575 > > Author: Jens Axboe > > Date: Wed Jan 4 08:52:06 2023 -0700 > > > > block: don't allow splitting of a REQ_NOWAIT bio > > > > got picked up by stable, but not the required prep patch: > > > > > > commit 613b14884b8595e20b9fac4126bf627313827fbe > > Author: Jens Axboe > > Date: Wed Jan 4 08:51:19 2023 -0700 > > > > block: handle bio_split_to_limits() NULL return > > > > Greg/team, can you pick the latter too? It'll pick cleanly for > > 6.1-stable, not sure how far back the other patch has gone yet. > > Looked back, and 5.15 has it too, but the cherry-pick won't work > on that kernel. > > Here's one for 5.15-stable that I verified crashes before this one, > and works with it. Haven't done an allmodconfig yet... All now queued up, thanks! greg k-h