From patchwork Fri Feb 21 07:39:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 230757 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F068EC35640 for ; Fri, 21 Feb 2020 08:34:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C6EE6206ED for ; Fri, 21 Feb 2020 08:34:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582274074; bh=dvE44OfBTrD5yaVr32CYxZ9E+07kwMmWlVXEWMen15s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qeeX4VArSxOiCbj34w85XpQlyJgB7XoNmajrYlw2zcoFBte3/8T9fXL20/n6pjddW LzY29dBz/OOTT2p0KrlBJb9zGHvC9630lZS5W50zdG40yI/pd2n+33xn/mA1+T6Q7K jrJqRdwhjWlpY/8krMCoq0dh2KM/QGhxLo62RtZk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731134AbgBUIea (ORCPT ); Fri, 21 Feb 2020 03:34:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:44186 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732336AbgBUIJV (ORCPT ); Fri, 21 Feb 2020 03:09:21 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CAD3420722; Fri, 21 Feb 2020 08:09:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582272561; bh=dvE44OfBTrD5yaVr32CYxZ9E+07kwMmWlVXEWMen15s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KvPEVToXOSjN4UxxBFcd2te4mX610z3j8QcKAZDxLv/8E378JXXW9lSGdsDjECxsZ xelKyVSqugfki9NtjX2SSjG6lYiQem1GCX9uSFCvylumllUPUYewcyC1jlAEU0e3C0 9jcEFnxori5SD/cviIyxjBcgtMGcBq/mM2Zyq544= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Leo Li , Harry Wentland , Sam Ravnborg , Dingchen Zhang , Alex Deucher , Sasha Levin Subject: [PATCH 5.4 190/344] drm: remove the newline for CRC source name. Date: Fri, 21 Feb 2020 08:39:49 +0100 Message-Id: <20200221072406.296314189@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200221072349.335551332@linuxfoundation.org> References: <20200221072349.335551332@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dingchen Zhang [ Upstream commit 72a848f5c46bab4c921edc9cbffd1ab273b2be17 ] userspace may transfer a newline, and this terminating newline is replaced by a '\0' to avoid followup issues. 'len-1' is the index to replace the newline of CRC source name. v3: typo fix (Sam) v2: update patch subject, body and format. (Sam) Cc: Leo Li Cc: Harry Wentland Cc: Sam Ravnborg Signed-off-by: Dingchen Zhang Reviewed-by: Sam Ravnborg Signed-off-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20190610134751.14356-1-dingchen.zhang@amd.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/drm_debugfs_crc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_debugfs_crc.c b/drivers/gpu/drm/drm_debugfs_crc.c index be1b7ba92ffe1..6a626c82e264b 100644 --- a/drivers/gpu/drm/drm_debugfs_crc.c +++ b/drivers/gpu/drm/drm_debugfs_crc.c @@ -140,8 +140,8 @@ static ssize_t crc_control_write(struct file *file, const char __user *ubuf, if (IS_ERR(source)) return PTR_ERR(source); - if (source[len] == '\n') - source[len] = '\0'; + if (source[len - 1] == '\n') + source[len - 1] = '\0'; ret = crtc->funcs->verify_crc_source(crtc, source, &values_cnt); if (ret)