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Thu, 03 Dec 2020 06:08:16 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-2-d3ajYMByOWuj0c7Eixl-jw-1; Thu, 03 Dec 2020 06:08:11 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 318428049C3 for ; Thu, 3 Dec 2020 11:08:10 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-94.ams2.redhat.com [10.36.112.94]) by smtp.corp.redhat.com (Postfix) with ESMTP id ED3215C1B4; Thu, 3 Dec 2020 11:08:06 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 1657C9D99; Thu, 3 Dec 2020 12:08:06 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1606993692; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=m+8n2MMAKDUhkWx/cgfOhRJfN/bIIYVRnw9ZPuOIHuA=; b=Hhfz3g7nCv+Bf5a56WxlzHF6Vs7NIPTv69ISBgAGi+A8HwtJvNldYIk0rNGkK6zTYmbBsO fY4J8L+2PvYxX4ypk2Bn9dx2M01zRMEC60sQtH6pFZaSvBKJCHe+YeDDjqzu8k1SZzzqA3 Aywl6sahGjsQ4z4EXFiwlc2q4GjphDw= X-MC-Unique: d3ajYMByOWuj0c7Eixl-jw-1 From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH 2/9] console: add check for ui_info pointer Date: Thu, 3 Dec 2020 12:07:58 +0100 Message-Id: <20201203110806.13556-3-kraxel@redhat.com> In-Reply-To: <20201203110806.13556-1-kraxel@redhat.com> References: <20201203110806.13556-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.495, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gerd Hoffmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" Verify the hw_ops->ui_info function pointer is non-zero before calling it. Can be triggered by qxl which changes hw_ops when switching between qxl-native and vga-compat modes. Signed-off-by: Gerd Hoffmann --- ui/console.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/ui/console.c b/ui/console.c index 16b326854080..8930808d0b6d 100644 --- a/ui/console.c +++ b/ui/console.c @@ -1539,7 +1539,9 @@ static void dpy_set_ui_info_timer(void *opaque) { QemuConsole *con =3D opaque; =20 - con->hw_ops->ui_info(con->hw, con->head, &con->ui_info); + if (con->hw_ops->ui_info) { + con->hw_ops->ui_info(con->hw, con->head, &con->ui_info); + } } =20 bool dpy_ui_info_supported(QemuConsole *con) --=20 2.27.0