From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2325E282F5; Tue, 22 Jul 2025 13:20:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753190402; cv=none; b=h10Nqb38at0VG1MH/IfL5UnEodo97BDN+YWswWoAvxBSUpCERILrme3UYP35lR40QFkWOe+D5B5GWTXHNZhnzd++M+G26nyQcXYYGtA5CmNCJA7c1kTNXN6gJxtdNshUYzc1rrARwZDjsB5leergClBZyJje/4pqNL6Dz5McKzM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753190402; c=relaxed/simple; bh=yJib0iOZQEofOelVhYch2rjGbC0RQyv5LUtihrEDWS8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=EBkjjnYCNam8jXedItFmhReaz4SQjj2bKsS76NuQDPcWJ9Fp5/lQPPhBEuSztSAQsDM/1mpxb5CIBKbkUWatLTMouM7bMhZsG+ptLjmdFF5vvDrC0mksEXipSLY2EkNHqzmAtbKjUQhVmzg2NrOZq/Y6pScIjf4+XakpxJnmhsM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dfpmbrNo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="dfpmbrNo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1ED1DC4CEEB; Tue, 22 Jul 2025 13:20:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1753190401; bh=yJib0iOZQEofOelVhYch2rjGbC0RQyv5LUtihrEDWS8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dfpmbrNoMfXrtHC5vf3Ha4Wrlb4aQIrOeQk1NZN02aMeuLtbG6cnc8l6eQmXDGoGZ 8YcV4p2P1pH01KNp+nOFFnvwEzUcnHxOBL9pPv4/ZgKBFobin0mQrhg2/MMIscXLV4 jZUd9rF2aYnx2z4yJwTr61IGfMQh9qxugwObZxbo= Date: Tue, 22 Jul 2025 15:19:58 +0200 From: Greg KH To: Ban ZuoXiang Cc: Baolu Lu , iommu@lists.linux.dev, linux-kernel@vger.kernel.org, stable@vger.kernel.org, bbaa@bbaa.moe Subject: Re: [REGRESSION][BISECTED] PCI =?utf-8?Q?P?= =?utf-8?Q?assthrough_=2F_SR-IOV_Failure_on_Stable_Kernel_?= =?utf-8?B?4oml?= v6.12.35 Message-ID: <2025072222-dose-lifting-e325@gregkh> References: <721D44AF820A4FEB+722679cb-2226-4287-8835-9251ad69a1ac@bbaa.fun> <6294f64a-d92d-4619-aef1-a142f5e8e4a5@linux.intel.com> <5F974FF84FAB6BD8+4a13da11-7f32-4f58-987a-9b7e1eaeb4aa@bbaa.fun> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <5F974FF84FAB6BD8+4a13da11-7f32-4f58-987a-9b7e1eaeb4aa@bbaa.fun> On Tue, Jul 22, 2025 at 09:14:08PM +0800, Ban ZuoXiang wrote: > > Thanks for reporting. Can this issue be reproduced with the latest > > mainline linux kernel? Can it work if you simply revert this commit? > > > > Thanks, > > baolu  > > Hi, baolu > > The issue cannot be reproduced on the latest mainline kernel (6.16.0-rc7-1-mainline). > The Ubuntu v6.14-series kernel which also include the commit is also not affected. > I think the issue only affects the v6.12 series in linux-stable tree. Should I wait for the stable maintainers to solve it? Nope! We need your help as you are the one that can reproduce it :) Are we missing a backport? Did we get the backport incorrect? Should we just revert it? thanks, greg k-h