From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 77DCE392C46; Fri, 9 Oct 2026 17:04:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791565470; cv=none; b=Hu9blS9K7u02rn19wfZ3aV5tCsjWaWnifNUj3sEtVsVLK6stQMtWP2SzI8DfTOAbtj5ro+tK7WDprj/SKYbjYftQ6DFWsmD5mBWuaGVDFFG8dkFGySGXmQeo+CSZJFvumY2BYdxfejbUXe0iwgkl9YKr22dBdIzDAwYwsWWVGFo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791565470; c=relaxed/simple; bh=pRBwxZ/pTxp7drinmbnO6WjD0YWUO9pajIRsaCkGJRY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VExBAqFGXoUPRPqDK0di2OXPAIwB1pqn7TiwHVZfW5SnfzFqae2EMokJlvEJPVPbfNNu0i7t6Nn1aDo5FWq+b5LVUMsHPKeP90pm4Cn0NBfm9hyHwCMyX4Skh438oDLLKQ93OFtSLrGnmlWN8muhe/9lniEPFhZXwWlhG+GAV3U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IjXcxo5s; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IjXcxo5s" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 439AD1F000FF; Fri, 9 Oct 2026 17:04:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791565469; bh=pRBwxZ/pTxp7drinmbnO6WjD0YWUO9pajIRsaCkGJRY=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=IjXcxo5sLrTtBSJR7EkoJWJY77e88/FBq0xaObIkJ8gytFU4tpsY9YddZpjtiCGsd Yv8M15lrCBIrHMaI2fHrUx/MTCbn9RQSd+EyRFZBscjksdk+j08F1zjcIzxZwi8XEX 1u+bMyBVUYF8xZLnHLuBWOhtUQ6gcltcfnPFaBFZHrUMA29WW9OLeD7kA9nJ18LluF LQpQpcea6IU0UlyakE/wazbfHT9e+xq4ueFy7q8OcrHkwJbD194frgQQN2+uHH1rhx iPEuGPyeVBHFEVlu5Tz4J1GYor8Qb5ysDSQuQNPlAubMgFFo5EC8mMYSvX4v58SYnm sWKyZYzFSEH0A== Date: Fri, 9 Oct 2026 18:04:24 +0100 From: "Lorenzo Stoakes (ARM)" To: Ihor Solodrai Cc: Andrew Morton , "Liam R . Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bpf Subject: Re: [PATCH v2] mm/vma: keep the unlinked VMA off the file across unmap on mmap hook failure Message-ID: References: <20261007101800.58d50b1b20a10738e630bfd5@linux-foundation.org> <20261007194708.2009-1-okerixx@gmail.com> <271f7ba8-df38-4c8f-b59d-68b52ee998e9@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <271f7ba8-df38-4c8f-b59d-68b52ee998e9@linux.dev> On Fri, Oct 09, 2026 at 09:38:56AM -0700, Ihor Solodrai wrote: > On 2026-10-09 4:31 a.m., Lorenzo Stoakes (ARM) wrote: > > -cc slopper > > > > On Thu, Oct 08, 2026 at 02:48:07PM -0700, Ihor Solodrai wrote: > > > BPF CI caught this bug on linux-next as well: > > > https://github.com/kernel-patches/bpf/actions/runs/37736351874 > > > > Nice that it caught it! > > > > Is there a way to automatically notify patch author that when it happens? Does > > it bisect, etc. or just green/red? > > For linux-next it's just green/red now. That's still nice! We have something similar in mm. I think possibly inspired by you guys :) > > We've added it to have an "upstream merge will break bpf" signal, > because it happened regularly. > > For bpf list we run on every incoming patch, so regressions are detected > quickly. Not feasible to do that for *every* upstream patch, we'd need > much more compute. > > An auto-bisection is something I thought about, but never got to it. > These days with LLMs this may be easier to set up though. yeah that'd be awesome, but obviously a nice-to-have! -- Cheers, Lorenzo