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 A6668CC6B12 for ; Tue, 13 Oct 2026 15:35:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zmTOPGpQZSsezT89evOrRzrwiZDrosNujgYWJI4q9Uk=; b=tQqpRvcEA28qeLUNTE8ShEI6Qu /ew12vksr4A5zqTglXgkZxGWIOdPZnc0MKO+W2Kac29IaiG672lzn1m/zRHADsPZiRx3pAqXQsveh oOaZz0H10W8NN7y8kYuEZGHDOCZiTiOLwIgmc/QKwvbvdubGfV2EmzpdRBd8tqnAPqa7kWRFf2ZDj s3p7+djj9gdqT/APd57a18B6UqkaID9PXzcz1bakXfO+mlxZN/pgpDuQxzpdEPgttij+PJJPNgGGw z3pGBiKqF3PBUno1vgNUsCyd9YROgDXb1zLthcet096hrS1DMGg5nmG8LOcXNIJJ2NR7ZP/MFIu6v tF/luYbQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xGeXJ-0000000DMZb-0Sr5; Tue, 13 Oct 2026 15:35:29 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xGeX9-0000000DMYQ-03bm for linux-nvme@lists.infradead.org; Tue, 13 Oct 2026 15:35:19 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 719F760A56; Tue, 13 Oct 2026 15:35:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5C421F000FF; Tue, 13 Oct 2026 15:35:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791905718; bh=zmTOPGpQZSsezT89evOrRzrwiZDrosNujgYWJI4q9Uk=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=etBCBMfoKvFQBM2KEKSlpDuR/ieZv/8133m+fXRuDTxmXisK5wELY9LPWbndbHWE/ ye22TC9f5e7UMWIE3+rMZx9oxMCK6z7yBcOA+P4zRx0mc417XCRzfYIvEs6EABpveX DPv1W8wz/l9re84b4SJxDmr1nyyEA4Y40ZtL7dcmJpXwTa1gz60ivynodjHuJEfZuC Otvf9R6IXbbiQdfabVMgqMXRxuIbvyzFRiebURLCqB5oJ3y+fURYH9MBUZ9NZ4f5Ur dT1AQ6Yq7rVVHSzcGgcwr4owpBX1wBNesz5klcewmiPHjHhdRF2QTY9qAEx0DJEGFf RISgPs6hG9KfA== Date: Tue, 13 Oct 2026 09:35:16 -0600 From: Keith Busch To: Nilay Shroff Cc: linux-nvme@lists.infradead.org, hch@lst.de, sagi@grimberg.me, gjoyce@linux.ibm.com, chaitanyak@nvidia.com Subject: Re: [PATCH v2 0/2] nvmet: passthru cleanup and fixup I/O hotpath Message-ID: References: <20260929112751.2985483-1-nilay@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260929112751.2985483-1-nilay@linux.ibm.com> X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Tue, Sep 29, 2026 at 04:56:46PM +0530, Nilay Shroff wrote: > Hi, > > This series addresses a race in the passthru I/O hotpath where > concurrently disabling the passthru controller while I/Os are in flight > can result in a use-after-free bug. > > We were able to reproduce this bug with NVMe/TCP configured and by > injecting an additional delay into the target-side I/O processing code. > If the passthru controller is disabled while an I/O is still in flight, > it results in the following kernel crash: Thanks, applied to nvme-7.4.