From patchwork Thu Nov 17 09:24:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 625962 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CB45FC433FE for ; Thu, 17 Nov 2022 09:25:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239314AbiKQJZU (ORCPT ); Thu, 17 Nov 2022 04:25:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48760 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234248AbiKQJZI (ORCPT ); Thu, 17 Nov 2022 04:25:08 -0500 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 41D6A5FC7; Thu, 17 Nov 2022 01:25:03 -0800 (PST) X-UUID: 0251dd356a174eb0b03b3eaa06a97557-20221117 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=zviENZfXwyOfFZjYFG/07wjjoPE34cnyXb34jHJ5SG8=; b=IM1abASHy9/G4x2uRgj7wjpCEKvC1F08marpFfvS7tfLVl+2TEaW/GYeWfZvhigpPxIGChVXRMMRWXY2skFTI9QG004UCrBr/pgg2c21DeCfUFVW+T8+It2qmO5hcS7zB76RI7MX717ddAgQyjCmGvcvltvEWbvRuQ6+4Lg+dMs=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.13, REQID:0933916a-1895-431e-a0a4-e464b4119c2e, IP:0, U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:d12e911, CLOUDID:6b340c2f-2938-482e-aafd-98d66723b8a9, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 0251dd356a174eb0b03b3eaa06a97557-20221117 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1259357121; Thu, 17 Nov 2022 17:24:59 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Thu, 17 Nov 2022 17:24:57 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Thu, 17 Nov 2022 17:24:56 +0800 From: Yunfei Dong To: Yunfei Dong , Chen-Yu Tsai , Nicolas Dufresne , Hans Verkuil , AngeloGioacchino Del Regno , Benjamin Gaignard , Tiffany Lin CC: Mauro Carvalho Chehab , Matthias Brugger , George Sun , Xiaoyong Lu , Hsin-Yi Wang , Fritz Koenig , Daniel Vetter , Steve Cho , , , , , , Subject: [PATCH v2, 2/5] media: mediatek: vcodec: Can't set dst buffer to done when lat decode error Date: Thu, 17 Nov 2022 17:24:50 +0800 Message-ID: <20221117092453.31366-3-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221117092453.31366-1-yunfei.dong@mediatek.com> References: <20221117092453.31366-1-yunfei.dong@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Core thread will call v4l2_m2m_buf_done to set dst buffer done for lat architecture. If lat call v4l2_m2m_buf_done_and_job_finish to free dst buffer when lat decode error, core thread will access kernel NULL pointer dereference, then crash. Signed-off-by: Yunfei Dong --- .../media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c index e86809052a9f..ffbcee04dc26 100644 --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c @@ -253,7 +253,7 @@ static void mtk_vdec_worker(struct work_struct *work) state = ret ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE; if (!IS_VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch) || - ctx->current_codec == V4L2_PIX_FMT_VP8_FRAME || ret) { + ctx->current_codec == V4L2_PIX_FMT_VP8_FRAME) { v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx, state); if (src_buf_req) v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);