From patchwork Thu Nov 17 09:24:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 626444 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 401B7C43217 for ; Thu, 17 Nov 2022 09:25:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234652AbiKQJZU (ORCPT ); Thu, 17 Nov 2022 04:25:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234646AbiKQJZI (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 001736393; Thu, 17 Nov 2022 01:25:03 -0800 (PST) X-UUID: 86a6023b2ce44bf99582c96fe0c95b65-20221117 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=Ig/pSgvvR3yu/pp6Gz7Idjah+bRQCtScaa8fUqrsgPs=; b=JiuVamA4AKOVGDxE97Vg4SEsupmyYMDEuyAbMOwpYBRDps2XK4fgXi4HRypZH5dKqLCwdUGJEsQ3YegfemeRZgaNHuquEIQT/PxizH325QxIp2De9PLBuQTjhbUa1IGd5kTWPu9/ycdh64wRa6ElCxjrjde9qRWDAfdrsmPVHtE=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.13, REQID:8dea99cf-0841-475f-9ffb-c039dda3fe0d, IP:0, U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:90 X-CID-INFO: VERSION:1.1.13, REQID:8dea99cf-0841-475f-9ffb-c039dda3fe0d, IP:0, URL :0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTIO N:quarantine,TS:90 X-CID-META: VersionHash:d12e911, CLOUDID:326b88f8-3a34-4838-abcf-dfedf9dd068e, B ulkID:221117172500VYPIAU3T,BulkQuantity:0,Recheck:0,SF:38|28|17|19|48,TC:n il,Content:0,EDM:-3,IP:nil,URL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 86a6023b2ce44bf99582c96fe0c95b65-20221117 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 735513468; Thu, 17 Nov 2022 17:24:58 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs13n2.mediatek.inc (172.21.101.108) 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 17:24:56 +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 17:24:55 +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, 1/5] media: mediatek: vcodec: Fix getting NULL pointer for dst buffer Date: Thu, 17 Nov 2022 17:24:49 +0800 Message-ID: <20221117092453.31366-2-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: devicetree@vger.kernel.org The driver may can't get v4l2 buffer when lat or core decode timeout, will lead to crash when call v4l2_m2m_buf_done to set dst buffer (NULL pointer) done. Fixes: 7b182b8d9c85 ("media: mediatek: vcodec: Refactor get and put capture buffer flow") Signed-off-by: Yunfei Dong --- .../mediatek/vcodec/mtk_vcodec_dec_stateless.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) 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 c45bd2599bb2..e86809052a9f 100644 --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c @@ -138,10 +138,13 @@ static void mtk_vdec_stateless_cap_to_disp(struct mtk_vcodec_ctx *ctx, int error state = VB2_BUF_STATE_DONE; vb2_dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); - v4l2_m2m_buf_done(vb2_dst, state); - - mtk_v4l2_debug(2, "free frame buffer id:%d to done list", - vb2_dst->vb2_buf.index); + if (vb2_dst) { + v4l2_m2m_buf_done(vb2_dst, state); + mtk_v4l2_debug(2, "free frame buffer id:%d to done list", + vb2_dst->vb2_buf.index); + } else { + mtk_v4l2_err("dst buffer is NULL"); + } if (src_buf_req) v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);