From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 D7260C352BE for ; Sat, 11 Apr 2020 23:10:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A7253215A4 for ; Sat, 11 Apr 2020 23:10:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586646655; bh=JKifc22C2UL+b3jQWkj/4fHSC1WFMr8V0XiS/e49728=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ELSXZYYh3Kq41HRsQYP8Lv7sJFDrL/qRCwS1puYvbGg+sOCAvs6ANmFBFNEd4H94O Y1bDazHrDyRXSQUL9ZXpJGKJzmJ+53yW4NViv3DSVhRpiw7FcDqSAnS3i6E3taC3qw BHyZmbscm8hBdF/hnbR5YHfmNQW9ICed6P9SzI/s= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729722AbgDKXKy (ORCPT ); Sat, 11 Apr 2020 19:10:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:49776 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729701AbgDKXKw (ORCPT ); Sat, 11 Apr 2020 19:10:52 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5357A21924; Sat, 11 Apr 2020 23:10:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586646652; bh=JKifc22C2UL+b3jQWkj/4fHSC1WFMr8V0XiS/e49728=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s+S58iBHl+TaPsMDf5PfA7GxFAGfx3ah7gPrivEnyAL8i+m5HRCUYzX+m5wZ60bfU hTyRantXQfcm8EMGNnVIBDpFpbd6Z3wfUOB3uVOcuQ4g4ZBa/xXftbiCOcoeRm03cb 4uLFUoXIi9Q7AmRX/czaf3/ZQXSpzIkK9KSDyr9I= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Peikang Zhang , Jun Lei , Bhawanpreet Lakha , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.4 055/108] drm/amd/display: dc_get_vmid_use_vector() crashes when get called Date: Sat, 11 Apr 2020 19:08:50 -0400 Message-Id: <20200411230943.24951-55-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200411230943.24951-1-sashal@kernel.org> References: <20200411230943.24951-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peikang Zhang [ Upstream commit 68bbca15e7062f4ae16531e29893f78d0b4840b6 ] [Why] int i can go out of boundary which will cause crash [How] Fixed the maximum value of i to avoid i going out of boundary Signed-off-by: Peikang Zhang Reviewed-by: Jun Lei Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c b/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c index a96d8de9380e6..f2b39ec35c898 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c @@ -62,7 +62,7 @@ int dc_get_vmid_use_vector(struct dc *dc) int i; int in_use = 0; - for (i = 0; i < dc->vm_helper->num_vmid; i++) + for (i = 0; i < MAX_HUBP; i++) in_use |= dc->vm_helper->hubp_vmid_usage[i].vmid_usage[0] | dc->vm_helper->hubp_vmid_usage[i].vmid_usage[1]; return in_use; -- 2.20.1