From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x226QwIzY6tfGWSGLOK12WPa9wCakCOaEa2afh1Ieeo1aI7jiRtxwym+6ewlyfCCi8Uxy9zxd ARC-Seal: i=1; a=rsa-sha256; t=1519217675; cv=none; d=google.com; s=arc-20160816; b=Y4/jHkplCGvWJ/2VQwOmY7ddXPKRU9LSx3ubj3S02FRH2NTPwYoAu8DMlB8rPrGp/a 8PRQDB6YfRwsm6YS30uR1OMMJYDvxusRbH0vS2mFg4KXC/ZKugmW+/LmoyrU8kYK7tSj x37NLr1QqDX3sFsNGj1JNghAVTALB62jXd6whg0fB82G3KGJ8CCidXFFebyEqC8CiGqn vZ8b6hHtxo5MH+PIM8+ZjsYrXnnTOp9QV2fFxl9c9gUHNDYjYFEHgcfqn1Q0LPOiavST yB4ZOMmHXFiVQVt0xdHHN7texSSdm4NolheaEG3rg5zQSQo177pkyDqLw3PhETWH6wvH WrqA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=koTm9ym7j0cneedkKJJR65va3iL0zQBSl+rCb36kBhg=; b=R1LXwpytw3NR76ojHY/pugG7Rs2soHdEGtHjWoa7gtXRYnMrKlzLIqrewA1XOPN125 Psd9jXrkdOAaABzHcA5Lj1I92Mn1DyiRxlNiby3DHa6bV3vE8rSIOpgfJo2YgOyXRJlg EPJKeQItbeY6qZWaDd2vY1uTZEcytff03ir5YQcwN8FUkUYN+Dtz0f4TMXhcSRVg/zOQ IhF5R+FpNQx5YadlOKCEQJh90fJC4mgbVE8BLoGrGOjrlxdsIYf+pyJhG0PQ1GyVFUSH NzoXLwoJFj7u1UMaj2yBe2YvRYc08G8N4IFyWGWs8p5pcnCBzkSdlBNQHQJvEthnqyk3 KIFg== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.71.90 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nicolas Pitre , Bartlomiej Zolnierkiewicz Subject: [PATCH 4.9 15/77] console/dummy: leave .con_font_get set to NULL Date: Wed, 21 Feb 2018 13:48:24 +0100 Message-Id: <20180221124432.813376426@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180221124432.172390020@linuxfoundation.org> References: <20180221124432.172390020@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1593014631678388583?= X-GMAIL-MSGID: =?utf-8?q?1593015193335321475?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicolas Pitre commit 724ba8b30b044aa0d94b1cd374fc15806cdd6f18 upstream. When this method is set, the caller expects struct console_font fields to be properly initialized when it returns. Leave it unset otherwise nonsensical (leaked kernel stack) values are returned to user space. Signed-off-by: Nicolas Pitre Cc: stable@vger.kernel.org Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Greg Kroah-Hartman --- drivers/video/console/dummycon.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/video/console/dummycon.c +++ b/drivers/video/console/dummycon.c @@ -67,7 +67,6 @@ const struct consw dummy_con = { .con_switch = DUMMY, .con_blank = DUMMY, .con_font_set = DUMMY, - .con_font_get = DUMMY, .con_font_default = DUMMY, .con_font_copy = DUMMY, };