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 F30FE14A619 for ; Sat, 5 Sep 2026 06:58:44 +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=1788591526; cv=none; b=W9iQa1F1BpMMwATPs5YOifUNYq8CbfyaHXZCaovBxfL7M9EgtX1z1SDDAg0DNuVC6pXxA+L+6SEKQcNA7m58pQ8yS4ug+WPtrWLTaHUxRZci4N4pgOrCIDD2jpQmDpJv01Of6vTjPUOe/AKP48ln4D9zbSTKfO5SxvJ8UmVIbbw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788591526; c=relaxed/simple; bh=nSUKkqsjQVtB/bQiLkXOnmnrmmnDpP1aVk7lMxRIc5g=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=gauMKWD/JNdsblJ6bwkLKAS3nKSR7DVYoqm2CVVlM0Ikj9JeqRIPN2854w0CPEqJDr0IIU9Vcuh6XRUskyuj0v7wXzn8wvhzhueNichxp/7XZfc6hmF4OuLA6O0rKepN3NFwDsMH6Wyp+i3attWo8UuwKW0gBBBiHitegLfqCLw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k5ugoqAc; 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="k5ugoqAc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A0CC1F00A3D; Sat, 5 Sep 2026 06:58:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788591524; bh=kpke9IVvm8AOwC+uiY2lk7MVFhtBnJAzJpK8iLGFEgw=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=k5ugoqAcXFE6DACdbAKHoRyXZT9kMzh4EKpCcp7xSLLZToG2xWjEXGtr9JSVUyVxF zqO25bZ1FYbtDRinNgodTIpcV5y/5ehUoJ0phXpA3K7t1zhWHFscJqZUdqkn+/3HXP r0hkf4oAe+iqB4siVFe6V9bLlzOfe5eIn8VR2UGnupQoMNVWauzVu6EdXwt+IDfoay F/mTmNdli6umCRT9vjxbaM6rsCFZ5Q4idBshRrTKcUAm1JdYhq14cvHuDyfGqXRZe2 q/ao/pYNAZYs7tGzu0U00IqLMdKqa4JMUP1b17GNN8XsFYnIYFln6gZHCsAZ3TSR/l XJNUsDdY4Ip/A== From: sashiko-bot@kernel.org Subject: Re: [PATCH] vt: skip screen update for DEC alignment test on backgroup consoles Reply-To: sashiko-reviews@lists.linux.dev To: "Zizhi Wo" Cc: linux-serial@vger.kernel.org In-Reply-To: <20260905064337.3083103-1-wozizhi@huaweicloud.com> References: <20260905064337.3083103-1-wozizhi@huaweicloud.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Sat, 05 Sep 2026 06:58:43 +0000 Message-Id: <20260905065844.7A0CC1F00A3D@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > From: Zizhi Wo >=20 > [BUG] > Recently, we encountered a KASAN warning as follows: >=20 > BUG: KASAN: slab-out-of-bounds in fb_pad_aligned_buffer+0x11f/0x140 > Read of size 1 at addr ff1100015fd9f6a4 by task tty_fbcon_oob/1239 > CPU: 7 UID: 0 PID: 1239 Comm: tty_fbcon_oob Not tainted 7.3.0-rc1 #100 PR= EEMPT(full) > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc41= 04/01/2014 > Call Trace: > > ... > kasan_report+0xf0/0x120 > fb_pad_aligned_buffer+0x11f/0x140 > ccw_putcs+0x86c/0xa80 > [ ... ] > the con_should_update() check in the do_con_trol() like every other call > site of do_update_region() (update_region(), invert_screen(), ...). >=20 > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") > Signed-off-by: Zizhi Wo Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260905064337.3083= 103-1-wozizhi@huaweicloud.com?part=3D1