From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 38125606EE93 for ; Tue, 3 Nov 2026 14:47:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=FuKFz25f; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ecNUXxnh DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Reply-To:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Date: Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Cc:To:Subject: From:Message-ID:MIME-Version:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=q0d4FPmWtZwKMh/sPGL0i6hRLuYL8e+WwbXcE1bGJN4=; b=FuKFz25fH3tO59EUlyMmQdV8Xn 6diu4K0CNUF24d8NgTY+BOWLj17UenUVzU/ya8zeOjltrxmSGJiHmVKgmhIyXGBQmg168Un/567we /lTGXCVc5m8na2MlvzJNfPSCg6AvBRt7RFPQYAM2Zupg/mOQO66tlmEGH6XONhhGj4qinVD+/x2gM C5x2gn3ffFbm4HdG1lN5e2NTBQ6N3kxqnLZgpaiG6ZGJ9/sBGys1cAb98KuVfsxR+TURYhAcB+7BN CZuT21MINNneqgvqqG9dw6yrhJdsQ5XdriKQZYKYtzoUIhR7qFsevahlDgcjTomN4pdd94E2AHdZT RbREoP4Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xOFnW-00000002kfF-3eyZ; Tue, 03 Nov 2026 14:47:38 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xOFnT-00000002kcw-3Kzx for kexec@lists.infradead.org; Tue, 03 Nov 2026 14:47:37 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 8C2E0417D7; Tue, 3 Nov 2026 14:47:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E75901F00A16; Tue, 3 Nov 2026 14:47:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793717255; bh=q0d4FPmWtZwKMh/sPGL0i6hRLuYL8e+WwbXcE1bGJN4=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=ecNUXxnh2OcVVvSa0U3huTG0L9O+PzIB1xuXCxIUp/GZPPPzipCpRc1/qlsk4J6CA x7U8X9eMczAWPO2ZaCpsl6YNtO0NoBu0+DXnA39JSuS9XY9AjGBFyXlc/Ccq4RTQY0 UAugm1HYHytJJ48gGhh5Ikw7HuDNMAn11k6igesT8J9xgHn79oAIaLwhkpwX1VrdQQ +5bvleOIuzZz7sQeEwq2Hki4vo4gTrOnLMNutAIHZebuy2qBXQktzKVc8aWpJCw5wT EMd2yrUC+CDD8BIHuYrdGWQwA/PwlqJVUVRxCdpabP9PdTkesHJyvmQoHa6OBE4VbX e+c9Js8H66prA== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH RFC 04/38] s390/dasd: don't look in front of the buffer on an empty write To: "Christian Brauner" Cc: "Linus Torvalds" , "Jann Horn" , "Josef Bacik" , "Chris Mason" , "Jeff Layton" , NeilBrown , "Eric Dumazet" , "Thomas Gleixner" , "Al Viro" , "Jonathan Corbet" , "Christoph Hellwig" , "Greg Kroah-Hartman" , "Joel Granados" , "Kees Cook" , "Jan Kara" , "Jan Kara" , linux-s390@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-m68k@lists.linux-m68k.org, linux-serial@vger.kernel.org, "Takashi Iwai" , linux-ext4@vger.kernel.org, "Chuck Lever" , tytso@mit.edu, "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" In-Reply-To: <20261102-work-procfs-bugfixes-v1-4-59422ed3e465@kernel.org> References: <20261102-work-procfs-bugfixes-v1-0-59422ed3e465@kernel.org> <20261102-work-procfs-bugfixes-v1-4-59422ed3e465@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 03 Nov 2026 14:47:33 +0000 X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sashiko-reviews@lists.linux.dev Sender: "kexec" X-Spam-Status: No, score=-10.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 X-Archived-By: > dasd_get_user_string() strips a trailing newline by looking at the last > byte that was written. For an empty write that's the byte in front of > the buffer it just allocated. Only look if something was written. >=20 > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") > Cc: stable@vger.kernel.org > Signed-off-by: Christian Brauner (Amutable) Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261102-work-procf= s-bugfixes-v1-0-59422ed3e465@kernel.org?part=3D4