From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=172.234.252.31 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793717256; b=0j8Y+L8PYSXy5g/N1igFkP36SjTGD+zxc+3pBaeJLn3s78EZNa2y4OQmxK8f5T/gVrGF FXBKD+MA2sGBGihjcE7wnj5Ih9l9axVnaYPZ2BgZxKKtoYFiE+vIWYzK4vpLGJVw5TQBD 6SjN+kZSKhV8AuHZMxQLZyt1AWecIuKTMLQ0VDuqkckbBgODI50onR536mumbZq6al3fp JFCJ3FtqYgYOa2Bs/aw/CdWL/ZrIkW/wdC4HNVyzIXjGwa7lNJKmwH9aF83XHRluRcAlA /rIYWhOVilpM3NAw8wO1Qh8GzrcGfH4cAZLMALqrIB2Q9r39pJcROEiEkV+BpLKOijA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793717256; h=DMARC-Filter:Received:Received:DKIM-Signature:Message-ID:From: Subject:Reply-To:To:Cc:In-Reply-To:References:Content-Type: Content-Transfer-Encoding:Date; bh=q0d4FPmWtZwKMh/sPGL0i6hRLuYL8e+WwbXcE1bGJN4=; b=Q5EvB4mOZ1fA1SaEYBgTQnNxjen47fe8+VhID5gt+58Wk8xzwg3bxV5qbmMXCkQnq3VH W75EakWuhbkkMbsFcznTeXZcBCVYI3auvd3r/FLsW7fkLCIiiJCJKRo2A2fZwnrD6yCfa K0GPaVflfnVTkFQQRnTyj7Y4nf+XmvqLZwHKaLFtnRhJMZJtsZlTKazt5S5/MHrjqk6KT Xetl8IzlZ133yMaTZTorA2kgj9S1nPpxyCW67b4Zg9Q2mDKHslKfNnvu1RHa/ltvLCSQH n5/edS3YLUWOrKFKBaX6tjF2s17O9reh+PP0RQDekl/VlobERgxy2lwkJQX7mIsD6ZA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=kernel.org; spf=pass smtp.mailfrom=kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ecNUXxnh; arc=none smtp.remote-ip=172.234.252.31 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A5D6D606D802 for ; Tue, 3 Nov 2026 14:47:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org A5D6D606D802 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ecNUXxnh 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 Reply-To: sashiko-reviews@lists.linux.dev 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-Mailing-List: linux-m68k@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > 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