| Message ID | 20241012064333.27269-2-yunfei.dong@mediatek.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v5,1/5] media: mediatek: vcodec: setting request complete before buffer done | expand |
Hi Yunfei,
kernel test robot noticed the following build warnings:
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Yunfei-Dong/media-mediatek-vcodec-setting-request-complete-before-buffer-done/20241012-144607
base: git://linuxtv.org/media_tree.git master
patch link: https://lore.kernel.org/r/20241012064333.27269-2-yunfei.dong%40mediatek.com
patch subject: [PATCH v5 1/5] media: mediatek: vcodec: setting request complete before buffer done
config: arm-randconfig-r072-20241016 (https://download.01.org/0day-ci/archive/20241019/202410192150.2YkqysDO-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.1.0
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202410192150.2YkqysDO-lkp@intel.com/
smatch warnings:
drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c:272 mtk_vdec_stateless_cap_to_disp() warn: variable dereferenced before check 'vb2_v4l2_src' (see line 268)
vim +/vb2_v4l2_src +272 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
01abf5fbb081c0 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2023-07-29 247 static void mtk_vdec_stateless_cap_to_disp(struct mtk_vcodec_dec_ctx *ctx, int error,
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 248 struct vb2_v4l2_buffer *vb2_v4l2_src)
8cdc3794b2e34b drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2021-08-06 249 {
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 250 struct vb2_v4l2_buffer *vb2_dst;
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 251 enum vb2_buffer_state state;
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 252 struct media_request *src_buf_req;
8cdc3794b2e34b drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2021-08-06 253
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 254 if (error)
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 255 state = VB2_BUF_STATE_ERROR;
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 256 else
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 257 state = VB2_BUF_STATE_DONE;
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 258
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 259 vb2_dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
d879f770e4d1d5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-11-17 260 if (vb2_dst) {
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 261 v4l2_m2m_buf_done(vb2_dst, state);
41f03c673cb7b5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2023-07-29 262 mtk_v4l2_vdec_dbg(2, ctx, "free frame buffer id:%d to done list",
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 263 vb2_dst->vb2_buf.index);
d879f770e4d1d5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-11-17 264 } else {
41f03c673cb7b5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2023-07-29 265 mtk_v4l2_vdec_err(ctx, "dst buffer is NULL");
d879f770e4d1d5 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-11-17 266 }
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 267
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 @268 src_buf_req = vb2_v4l2_src->vb2_buf.req_obj.req;
^^^^^^^^^^^^^^^
Dereference
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 269 if (src_buf_req)
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 270 v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 271
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 @272 if (vb2_v4l2_src)
^^^^^^^^^^^^
Checked too late
5c46486b8d2760 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c Yunfei Dong 2024-10-12 273 v4l2_m2m_buf_done(vb2_v4l2_src, state);
7b182b8d9c8523 drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c Yunfei Dong 2022-05-12 274 }
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c index 98838217b97d..2b787e60a1f9 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c @@ -887,10 +887,10 @@ void vb2ops_vdec_stop_streaming(struct vb2_queue *q) if (src_buf != &ctx->empty_flush_buf.vb) { struct media_request *req = src_buf->vb2_buf.req_obj.req; - v4l2_m2m_buf_done(src_buf, - VB2_BUF_STATE_ERROR); + if (req) v4l2_ctrl_request_complete(req, &ctx->ctrl_hdl); + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR); } } return; diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h index ac568ed14fa2..1fabe8c5b7a4 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h +++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h @@ -111,7 +111,7 @@ struct mtk_vcodec_dec_pdata { int (*flush_decoder)(struct mtk_vcodec_dec_ctx *ctx); struct vdec_fb *(*get_cap_buffer)(struct mtk_vcodec_dec_ctx *ctx); void (*cap_to_disp)(struct mtk_vcodec_dec_ctx *ctx, int error, - struct media_request *src_buf_req); + struct vb2_v4l2_buffer *vb2_v4l2_src); const struct vb2_ops *vdec_vb2_ops; diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c index 3307dc15fc1d..fe8ff379ebe8 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c @@ -245,10 +245,11 @@ static const struct v4l2_frmsize_stepwise stepwise_fhd = { }; static void mtk_vdec_stateless_cap_to_disp(struct mtk_vcodec_dec_ctx *ctx, int error, - struct media_request *src_buf_req) + struct vb2_v4l2_buffer *vb2_v4l2_src) { struct vb2_v4l2_buffer *vb2_dst; enum vb2_buffer_state state; + struct media_request *src_buf_req; if (error) state = VB2_BUF_STATE_ERROR; @@ -264,8 +265,12 @@ static void mtk_vdec_stateless_cap_to_disp(struct mtk_vcodec_dec_ctx *ctx, int e mtk_v4l2_vdec_err(ctx, "dst buffer is NULL"); } + src_buf_req = vb2_v4l2_src->vb2_buf.req_obj.req; if (src_buf_req) v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl); + + if (vb2_v4l2_src) + v4l2_m2m_buf_done(vb2_v4l2_src, state); } static struct vdec_fb *vdec_get_cap_buffer(struct mtk_vcodec_dec_ctx *ctx) @@ -374,14 +379,12 @@ 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) { - 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); + v4l2_m2m_buf_done_and_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx, state); } else { - if (ret != -EAGAIN) { + if (ret != -EAGAIN) v4l2_m2m_src_buf_remove(ctx->m2m_ctx); - v4l2_m2m_buf_done(vb2_v4l2_src, state); - } v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx); } } diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c index bf21f2467a0f..90217cc8e242 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c @@ -1071,7 +1071,8 @@ static int vdec_av1_slice_setup_lat_from_src_buf(struct vdec_av1_slice_instance if (!src) return -EINVAL; - lat_buf->src_buf_req = src->vb2_buf.req_obj.req; + lat_buf->vb2_v4l2_src = src; + dst = &lat_buf->ts_info; v4l2_m2m_buf_copy_metadata(src, dst, true); vsi->frame.cur_ts = dst->vb2_buf.timestamp; @@ -2195,7 +2196,7 @@ static int vdec_av1_slice_core_decode(struct vdec_lat_buf *lat_buf) &instance->core_vsi->trans.dma_addr_end); vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, instance->core_vsi->trans.dma_addr_end); - ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->src_buf_req); + ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->vb2_v4l2_src); return 0; @@ -2204,7 +2205,7 @@ static int vdec_av1_slice_core_decode(struct vdec_lat_buf *lat_buf) vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, pfc->vsi.trans.dma_addr_end); if (fb) - ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->src_buf_req); + ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->vb2_v4l2_src); return ret; } diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c index 1ed0ccec5665..732d78f63e5a 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c @@ -533,7 +533,7 @@ static int vdec_h264_slice_core_decode(struct vdec_lat_buf *lat_buf) vdec_dec_end: vdec_msg_queue_update_ube_rptr(&lat_buf->ctx->msg_queue, share_info->trans_end); - ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->src_buf_req); + ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->vb2_v4l2_src); mtk_vdec_debug(ctx, "core decode done err=%d", err); ctx->decoded_frame_cnt++; return 0; @@ -605,7 +605,7 @@ static int vdec_h264_slice_lat_decode(void *h_vdec, struct mtk_vcodec_mem *bs, } inst->vsi->dec.nal_info = buf[nal_start_idx]; - lat_buf->src_buf_req = src_buf_info->m2m_buf.vb.vb2_buf.req_obj.req; + lat_buf->vb2_v4l2_src = &src_buf_info->m2m_buf.vb; v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb, &lat_buf->ts_info, true); err = vdec_h264_slice_fill_decode_parameters(inst, share_info); diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c index aa721cc43647..f6f9f7de0005 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_hevc_req_multi_if.c @@ -741,7 +741,7 @@ static int vdec_hevc_slice_setup_lat_buffer(struct vdec_hevc_slice_inst *inst, inst->vsi->bs.size = bs->size; src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer); - lat_buf->src_buf_req = src_buf_info->m2m_buf.vb.vb2_buf.req_obj.req; + lat_buf->vb2_v4l2_src = &src_buf_info->m2m_buf.vb; v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb, &lat_buf->ts_info, true); *res_chg = inst->resolution_changed; @@ -961,7 +961,7 @@ static int vdec_hevc_slice_core_decode(struct vdec_lat_buf *lat_buf) vdec_dec_end: vdec_msg_queue_update_ube_rptr(&lat_buf->ctx->msg_queue, share_info->trans.dma_addr_end); - ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->src_buf_req); + ctx->dev->vdec_pdata->cap_to_disp(ctx, !!err, lat_buf->vb2_v4l2_src); mtk_vdec_debug(ctx, "core decode done err=%d", err); ctx->decoded_frame_cnt++; return 0; diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c index eea709d93820..3dceb668ba1c 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c @@ -721,7 +721,7 @@ static int vdec_vp9_slice_setup_lat_from_src_buf(struct vdec_vp9_slice_instance if (!src) return -EINVAL; - lat_buf->src_buf_req = src->vb2_buf.req_obj.req; + lat_buf->vb2_v4l2_src = src; dst = &lat_buf->ts_info; v4l2_m2m_buf_copy_metadata(src, dst, true); @@ -2187,7 +2187,7 @@ static int vdec_vp9_slice_core_decode(struct vdec_lat_buf *lat_buf) mtk_vdec_debug(ctx, "core dma_addr_end 0x%lx\n", (unsigned long)pfc->vsi.trans.dma_addr_end); vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, pfc->vsi.trans.dma_addr_end); - ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->src_buf_req); + ctx->dev->vdec_pdata->cap_to_disp(ctx, 0, lat_buf->vb2_v4l2_src); return 0; @@ -2197,7 +2197,7 @@ static int vdec_vp9_slice_core_decode(struct vdec_lat_buf *lat_buf) vdec_msg_queue_update_ube_rptr(&ctx->msg_queue, pfc->vsi.trans.dma_addr_end); if (fb) - ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->src_buf_req); + ctx->dev->vdec_pdata->cap_to_disp(ctx, 1, lat_buf->vb2_v4l2_src); } return ret; } diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h b/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h index b0f576867f4b..9781de35df4b 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec_msg_queue.h @@ -55,7 +55,7 @@ struct vdec_msg_queue_ctx { * @rd_mv_addr: mv addr for av1 lat hardware output, core hardware input * @tile_addr: tile buffer for av1 core input * @ts_info: need to set timestamp from output to capture - * @src_buf_req: output buffer media request object + * @vb2_v4l2_src: vb2 buffer of output queue * * @private_data: shared information used to lat and core hardware * @ctx: mtk vcodec context information @@ -71,7 +71,7 @@ struct vdec_lat_buf { struct mtk_vcodec_mem rd_mv_addr; struct mtk_vcodec_mem tile_addr; struct vb2_v4l2_buffer ts_info; - struct media_request *src_buf_req; + struct vb2_v4l2_buffer *vb2_v4l2_src; void *private_data; struct mtk_vcodec_dec_ctx *ctx;
The request status of output queue is set to MEDIA_REQUEST_STATE_COMPLETE when user space dequeue output buffer. Will get below warning if the driver calling v4l2_ctrl_request_complete to set media request complete, must to change the function order, calling v4l2_ctrl_request_complete before v4l2_m2m_buf_done. Workqueue: core-decoder vdec_msg_queue_core_work [mtk_vcodec_dec] pstate: 80c00089 (Nzcv daIf +PAN +UAO -TCO BTYPE=--) pc : media_request_object_bind+0xa8/0x124 lr : media_request_object_bind+0x50/0x124 sp : ffffffc011393be0 x29: ffffffc011393be0 x28: 0000000000000000 x27: ffffff890c280248 x26: ffffffe21a71ab88 x25: 0000000000000000 x24: ffffff890c280280 x23: ffffff890c280280 x22: 00000000fffffff0 x21: 0000000000000000 x20: ffffff890260d280 x19: ffffff890260d2e8 x18: 0000000000001000 x17: 0000000000000400 x16: ffffffe21a4584a0 x15: 000000000053361d x14: 0000000000000018 x13: 0000000000000004 x12: ffffffa82427d000 x11: ffffffe21ac3fce0 x10: 0000000000000001 x9 : 0000000000000000 x8 : 0000000000000003 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : ffffff89052e7b98 x3 : 0000000000000000 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: media_request_object_bind+0xa8/0x124 v4l2_ctrl_request_bind+0xc4/0x168 v4l2_ctrl_request_complete+0x198/0x1f4 mtk_vdec_stateless_cap_to_disp+0x58/0x8c [mtk_vcodec_dec 245a7c1e48ff1b2451a50e1dfcb174262b6b462c] vdec_vp9_slice_core_decode+0x1c0/0x268 [mtk_vcodec_dec 245a7c1e48ff1b2451a50e1dfcb174262b6b462c] vdec_msg_queue_core_work+0x60/0x11c [mtk_vcodec_dec 245a7c1e48ff1b2451a50e1dfcb174262b6b462c] process_one_work+0x140/0x480 worker_thread+0x12c/0x2f8 kthread+0x13c/0x1d8 ret_from_fork+0x10/0x30 Fixes: 7b182b8d9c852 ("media: mediatek: vcodec: Refactor get and put capture buffer flow") Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com> --- .../mediatek/vcodec/decoder/mtk_vcodec_dec.c | 4 ++-- .../mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h | 2 +- .../vcodec/decoder/mtk_vcodec_dec_stateless.c | 13 ++++++++----- .../vcodec/decoder/vdec/vdec_av1_req_lat_if.c | 7 ++++--- .../vcodec/decoder/vdec/vdec_h264_req_multi_if.c | 4 ++-- .../vcodec/decoder/vdec/vdec_hevc_req_multi_if.c | 4 ++-- .../vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 6 +++--- .../mediatek/vcodec/decoder/vdec_msg_queue.h | 4 ++-- 8 files changed, 24 insertions(+), 20 deletions(-)