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Tue, 26 Sep 2023 03:19:48 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Tue, 26 Sep 2023 18:19:14 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Tue, 26 Sep 2023 18:19:13 +0800 From: Irui Wang To: Hans Verkuil , Mauro Carvalho Chehab , Matthias Brugger , , , Yunfei Dong , Irui Wang CC: , , , , , , Maoguang Meng Subject: [PATCH 2/2] media: mediatek: vcodec: Handle encoder vsi NULL pointer case Date: Tue, 26 Sep 2023 18:19:09 +0800 Message-ID: <20230926101909.15030-2-irui.wang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230926101909.15030-1-irui.wang@mediatek.com> References: <20230926101909.15030-1-irui.wang@mediatek.com> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--7.091600-8.000000 X-TMASE-MatchedRID: cp51Uxq7L6sEshQLfIZrysnlbo5l7mGFJwFLIHVZ6fvfc2Xd6VJ+yrx1 VMA+w2QulTJXKqh1ne29cOdjc/43lZH0YXYnbGozFEUknJ/kEl4YSQiB0ZTudfoLR4+zsDTtIFg EzOKKV2ZWlXDJGO9dw1RaeKIGTQfJwTnaD7mFxuQCohBZVD+eQlZca9RSYo/b X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--7.091600-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 5C163453A2C201611508BB54AA4306416D94492B541BA8C6922B690B29CF1F5F2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230926_031953_640877_2663E138 X-CRM114-Status: GOOD ( 10.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There will be a kernel null pointer exception if 'vsi' is NULL, check 'vsi' is not NULL before assign it to encoder instance. Signed-off-by: Irui Wang Reviewed-by: AngeloGioacchino Del Regno --- .../platform/mediatek/vcodec/encoder/venc/venc_h264_if.c | 5 +++++ .../platform/mediatek/vcodec/encoder/venc/venc_vp8_if.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_h264_if.c b/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_h264_if.c index a68dac72c4e4..385bcc0d14f3 100644 --- a/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_h264_if.c +++ b/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_h264_if.c @@ -597,6 +597,11 @@ static int h264_enc_init(struct mtk_vcodec_enc_ctx *ctx) inst->hw_base = mtk_vcodec_get_reg_addr(inst->ctx->dev->reg_base, VENC_SYS); ret = vpu_enc_init(&inst->vpu_inst); + if (!inst->vpu_inst.vsi) { + mtk_venc_err(ctx, "share buffer is NULL"); + kfree(inst); + return -EFAULT; + } if (MTK_ENC_IOVA_IS_34BIT(ctx)) inst->vsi_34 = (struct venc_h264_vsi_34 *)inst->vpu_inst.vsi; diff --git a/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_vp8_if.c b/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_vp8_if.c index 05abca91e742..23ca0d93324f 100644 --- a/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_vp8_if.c +++ b/drivers/media/platform/mediatek/vcodec/encoder/venc/venc_vp8_if.c @@ -326,6 +326,11 @@ static int vp8_enc_init(struct mtk_vcodec_enc_ctx *ctx) inst->hw_base = mtk_vcodec_get_reg_addr(inst->ctx->dev->reg_base, VENC_LT_SYS); ret = vpu_enc_init(&inst->vpu_inst); + if (!inst->vpu_inst.vsi) { + mtk_venc_err(ctx, "share buffer is NULL"); + kfree(inst); + return -EFAULT; + } inst->vsi = (struct venc_vp8_vsi *)inst->vpu_inst.vsi;