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 71B1813A269; Wed, 24 Apr 2024 03:42:33 +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=1713930153; cv=none; b=rqs65lynoWTtjo1yZpuz+utxrSuFajJpvVBVprdCyIdIOWHgWlh61et3nqL63CecFohouy3rXfgZA00qJQwrKrOfCb4QA7AyVicGmLNDCUh829vCQTJaVXajmAnXqDkomPDUj8Ct04Ktl9gTLJ+ScLAQDvAGgi3DerrogapJrvo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713930153; c=relaxed/simple; bh=s8JSpe5lXZIlrGkV5GrE8eLt0SRuwdFk9Gns8mE2/uE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cvldpornClj1oEbG0c0xAqrBfPex6PpRI2wYdO4eMZJirwn7lopVDBItu7db3LDetkDnZQjMyHQ5OVANC05wu5bCP6vGkVsTaJtjMyipSIqm7zuLoIhMpQg/d1DzpzXl973Lu0gfl8JKMNz1Rt9Mo60B+vSKYpGGG/3QRETjivw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LKLBrxBE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LKLBrxBE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E47F9C3277B; Wed, 24 Apr 2024 03:42:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713930153; bh=s8JSpe5lXZIlrGkV5GrE8eLt0SRuwdFk9Gns8mE2/uE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LKLBrxBE4M7LMlIiN0mpe0WQXkYqSkcPKHWIC0yWrZ2AIkZ/coaC7iUCQEMGzJUUA 1/rPwZJemR5Ur2J68hnvh9UaEfiTYrna3fV27pQ8gF5zkFQLRZBCvScXskr5VHxp1j cxlsT++NSh96ve3UUgbGsnRAcWCaQLzVUu55lgMMvA+UyAqfjvY237MKgzkTsF9mp9 2sW2gpDdA0I+i8eQuh4nLMu48yzroqp8UBHWW/4VNSU1HHYHzYFGa3aFqZlUDrHPPz yOjWh7cUnj+EpiV9Ug+U7qzQxbQy/ytauTBynUKUiTj8KQ6YQnDt5SWUPWHDSNpLtY HSSQu1Cj51uCw== Date: Tue, 23 Apr 2024 20:42:32 -0700 From: "Darrick J. Wong" To: Marius Fleischer Cc: Dave Chinner , Leah Rumancik , linux-xfs@vger.kernel.org, linux-kernel@vger.kernel.org, harrisonmichaelgreen@gmail.com, syzkaller@googlegroups.com Subject: Re: KASAN: null-ptr-deref Write in xlog_cil_commit Message-ID: <20240424034232.GD360940@frogsfrogsfrogs> References: Precedence: bulk X-Mailing-List: linux-xfs@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: On Tue, Apr 23, 2024 at 08:05:22AM -0700, Marius Fleischer wrote: > Hi Dave, > > Thank you so much for your detailed explanations! > > > > Do you think it would make sense to backport that patch to 5.15.156 (the > > > LTS kernel)? > > > > That's up to the 5.15 LTS maintainers to decide. They also need to > > weigh up the fact that xlog_cil_kvmalloc() doesn't exist anymore in > > the upstream code base. i.e. we found other places that had the same > > kvmalloc() performance problems, and so lifted that code up further > > and used it in other places in XFS.... > > > > Understood. Please allow me one last follow-up question. Did I add the correct > maintainers/mailing lists to reach the 5.15 LTS maintainers? If not, > how do I find > the correct addresses? I used scripts/get_maintainer.pl as suggested here > (https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html) > to locate maintainers/mailing lists. You got it correct -- Leah is the 5.15 maintainer of record. --D > Wishing you a lovely week! > > Best, > Marius