* [PATCH v2 0/1] mtk-vcodec: check the vp9 decoder buffer index from VPU @ 2017-03-07 14:42 Wu-Cheng Li 2017-03-07 14:42 ` [PATCH v2 1/1] " Wu-Cheng Li 0 siblings, 1 reply; 3+ messages in thread From: Wu-Cheng Li @ 2017-03-07 14:42 UTC (permalink / raw) To: linux-arm-kernel From: Wu-Cheng Li <wuchengli@google.com> This patch guards against the invalid buffer index from VPU firmware. v2: also check the result of vdec_if_decode in mtk_vdec_worker. Wu-Cheng Li (1): mtk-vcodec: check the vp9 decoder buffer index from VPU. drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 23 ++++++++++++++----- drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h | 2 ++ .../media/platform/mtk-vcodec/vdec/vdec_vp9_if.c | 26 ++++++++++++++++++++++ drivers/media/platform/mtk-vcodec/vdec_drv_if.h | 2 ++ 4 files changed, 48 insertions(+), 5 deletions(-) -- 2.12.0.rc1.440.g5b76565f74-goog ^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH v2 1/1] mtk-vcodec: check the vp9 decoder buffer index from VPU. 2017-03-07 14:42 [PATCH v2 0/1] mtk-vcodec: check the vp9 decoder buffer index from VPU Wu-Cheng Li @ 2017-03-07 14:42 ` Wu-Cheng Li 2017-03-08 3:11 ` Tiffany Lin 0 siblings, 1 reply; 3+ messages in thread From: Wu-Cheng Li @ 2017-03-07 14:42 UTC (permalink / raw) To: linux-arm-kernel From: Wu-Cheng Li <wuchengli@google.com> VPU firmware has a bug and may return invalid buffer index for some vp9 videos. Check the buffer indexes before accessing the buffer. Signed-off-by: Wu-Cheng Li <wuchengli@chromium.org> --- drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 23 ++++++++++++++----- drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h | 2 ++ .../media/platform/mtk-vcodec/vdec/vdec_vp9_if.c | 26 ++++++++++++++++++++++ drivers/media/platform/mtk-vcodec/vdec_drv_if.h | 2 ++ 4 files changed, 48 insertions(+), 5 deletions(-) diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c index 502877a4b1df..8a9285a84d47 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c @@ -420,6 +420,11 @@ static void mtk_vdec_worker(struct work_struct *work) dst_buf->index, ret, res_chg); src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); + if (ret == -EIO) { + mutex_lock(&ctx->lock); + src_buf_info->error = true; + mutex_unlock(&ctx->lock); + } v4l2_m2m_buf_done(&src_buf_info->vb, VB2_BUF_STATE_ERROR); } else if (res_chg == false) { /* @@ -1176,6 +1181,11 @@ static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb) "[%d] vdec_if_decode() src_buf=%d, size=%zu, fail=%d, res_chg=%d", ctx->id, src_buf->index, src_mem.size, ret, res_chg); + if (ret == -EIO) { + mtk_v4l2_err("[%d] Unrecoverable error in vdec_if_decode.", + ctx->id); + ctx->state = MTK_STATE_ABORT; + } return; } @@ -1217,14 +1227,17 @@ static void vb2ops_vdec_buf_finish(struct vb2_buffer *vb) struct vb2_v4l2_buffer *vb2_v4l2; struct mtk_video_dec_buf *buf; - if (vb->vb2_queue->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) - return; - vb2_v4l2 = container_of(vb, struct vb2_v4l2_buffer, vb2_buf); buf = container_of(vb2_v4l2, struct mtk_video_dec_buf, vb); mutex_lock(&ctx->lock); - buf->queued_in_v4l2 = false; - buf->queued_in_vb2 = false; + if (buf->error) { + mtk_v4l2_err("Unrecoverable error on buffer."); + ctx->state = MTK_STATE_ABORT; + } + if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { + buf->queued_in_v4l2 = false; + buf->queued_in_vb2 = false; + } mutex_unlock(&ctx->lock); } diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h index 362f5a85762e..dc4fc1df63c5 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h @@ -50,6 +50,7 @@ struct vdec_fb { * @queued_in_v4l2: Capture buffer is in v4l2 driver, but not in vb2 * queue yet * @lastframe: Intput buffer is last buffer - EOS + * @error: An unrecoverable error occurs on this buffer. * @frame_buffer: Decode status, and buffer information of Capture buffer * * Note : These status information help us track and debug buffer state @@ -63,6 +64,7 @@ struct mtk_video_dec_buf { bool queued_in_vb2; bool queued_in_v4l2; bool lastframe; + bool error; struct vdec_fb frame_buffer; }; diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c index e91a3b425b0c..5539b1853f16 100644 --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c @@ -718,6 +718,26 @@ static void get_free_fb(struct vdec_vp9_inst *inst, struct vdec_fb **out_fb) *out_fb = fb; } +static int validate_vsi_array_indexes(struct vdec_vp9_inst *inst, + struct vdec_vp9_vsi *vsi) { + if (vsi->sf_frm_idx >= VP9_MAX_FRM_BUF_NUM - 1) { + mtk_vcodec_err(inst, "Invalid vsi->sf_frm_idx=%u.", + vsi->sf_frm_idx); + return -EIO; + } + if (vsi->frm_to_show_idx >= VP9_MAX_FRM_BUF_NUM) { + mtk_vcodec_err(inst, "Invalid vsi->frm_to_show_idx=%u.", + vsi->frm_to_show_idx); + return -EIO; + } + if (vsi->new_fb_idx >= VP9_MAX_FRM_BUF_NUM) { + mtk_vcodec_err(inst, "Invalid vsi->new_fb_idx=%u.", + vsi->new_fb_idx); + return -EIO; + } + return 0; +} + static void vdec_vp9_deinit(unsigned long h_vdec) { struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec; @@ -834,6 +854,12 @@ static int vdec_vp9_decode(unsigned long h_vdec, struct mtk_vcodec_mem *bs, goto DECODE_ERROR; } + ret = validate_vsi_array_indexes(inst, vsi); + if (ret) { + mtk_vcodec_err(inst, "Invalid values from VPU."); + goto DECODE_ERROR; + } + if (vsi->resolution_changed) { if (!vp9_alloc_work_buf(inst)) { ret = -EINVAL; diff --git a/drivers/media/platform/mtk-vcodec/vdec_drv_if.h b/drivers/media/platform/mtk-vcodec/vdec_drv_if.h index db6b5205ffb1..ded1154481cd 100644 --- a/drivers/media/platform/mtk-vcodec/vdec_drv_if.h +++ b/drivers/media/platform/mtk-vcodec/vdec_drv_if.h @@ -85,6 +85,8 @@ void vdec_if_deinit(struct mtk_vcodec_ctx *ctx); * @res_chg : [out] resolution change happens if current bs have different * picture width/height * Note: To flush the decoder when reaching EOF, set input bitstream as NULL. + * + * Return: 0 on success. -EIO on unrecoverable error. */ int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs, struct vdec_fb *fb, bool *res_chg); -- 2.12.0.rc1.440.g5b76565f74-goog ^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v2 1/1] mtk-vcodec: check the vp9 decoder buffer index from VPU. 2017-03-07 14:42 ` [PATCH v2 1/1] " Wu-Cheng Li @ 2017-03-08 3:11 ` Tiffany Lin 0 siblings, 0 replies; 3+ messages in thread From: Tiffany Lin @ 2017-03-08 3:11 UTC (permalink / raw) To: linux-arm-kernel On Tue, 2017-03-07 at 22:42 +0800, Wu-Cheng Li wrote: > From: Wu-Cheng Li <wuchengli@google.com> > > VPU firmware has a bug and may return invalid buffer index for > some vp9 videos. Check the buffer indexes before accessing the > buffer. > > Signed-off-by: Wu-Cheng Li <wuchengli@chromium.org> > --- > drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c | 23 ++++++++++++++----- > drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h | 2 ++ > .../media/platform/mtk-vcodec/vdec/vdec_vp9_if.c | 26 ++++++++++++++++++++++ > drivers/media/platform/mtk-vcodec/vdec_drv_if.h | 2 ++ > 4 files changed, 48 insertions(+), 5 deletions(-) > > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c > index 502877a4b1df..8a9285a84d47 100644 > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c > @@ -420,6 +420,11 @@ static void mtk_vdec_worker(struct work_struct *work) > dst_buf->index, > ret, res_chg); > src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); > + if (ret == -EIO) { > + mutex_lock(&ctx->lock); > + src_buf_info->error = true; > + mutex_unlock(&ctx->lock); > + } > v4l2_m2m_buf_done(&src_buf_info->vb, VB2_BUF_STATE_ERROR); > } else if (res_chg == false) { > /* > @@ -1176,6 +1181,11 @@ static void vb2ops_vdec_buf_queue(struct vb2_buffer *vb) > "[%d] vdec_if_decode() src_buf=%d, size=%zu, fail=%d, res_chg=%d", > ctx->id, src_buf->index, > src_mem.size, ret, res_chg); > + if (ret == -EIO) { > + mtk_v4l2_err("[%d] Unrecoverable error in vdec_if_decode.", > + ctx->id); > + ctx->state = MTK_STATE_ABORT; > + } Should we set buf status to VB2_BUF_STATE_ERROR in this case? > return; > } > > @@ -1217,14 +1227,17 @@ static void vb2ops_vdec_buf_finish(struct vb2_buffer *vb) > struct vb2_v4l2_buffer *vb2_v4l2; > struct mtk_video_dec_buf *buf; > > - if (vb->vb2_queue->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) > - return; > - > vb2_v4l2 = container_of(vb, struct vb2_v4l2_buffer, vb2_buf); > buf = container_of(vb2_v4l2, struct mtk_video_dec_buf, vb); > mutex_lock(&ctx->lock); > - buf->queued_in_v4l2 = false; > - buf->queued_in_vb2 = false; > + if (buf->error) { > + mtk_v4l2_err("Unrecoverable error on buffer."); Remove mtk_v4l2_err out of mutex_lock/mutex_unlock? best regards, Tiffany > + ctx->state = MTK_STATE_ABORT; > + } > + if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { > + buf->queued_in_v4l2 = false; > + buf->queued_in_vb2 = false; > + } > mutex_unlock(&ctx->lock); > } > > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h > index 362f5a85762e..dc4fc1df63c5 100644 > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h > @@ -50,6 +50,7 @@ struct vdec_fb { > * @queued_in_v4l2: Capture buffer is in v4l2 driver, but not in vb2 > * queue yet > * @lastframe: Intput buffer is last buffer - EOS > + * @error: An unrecoverable error occurs on this buffer. > * @frame_buffer: Decode status, and buffer information of Capture buffer > * > * Note : These status information help us track and debug buffer state > @@ -63,6 +64,7 @@ struct mtk_video_dec_buf { > bool queued_in_vb2; > bool queued_in_v4l2; > bool lastframe; > + bool error; > struct vdec_fb frame_buffer; > }; > > diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c > index e91a3b425b0c..5539b1853f16 100644 > --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c > +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_vp9_if.c > @@ -718,6 +718,26 @@ static void get_free_fb(struct vdec_vp9_inst *inst, struct vdec_fb **out_fb) > *out_fb = fb; > } > > +static int validate_vsi_array_indexes(struct vdec_vp9_inst *inst, > + struct vdec_vp9_vsi *vsi) { > + if (vsi->sf_frm_idx >= VP9_MAX_FRM_BUF_NUM - 1) { > + mtk_vcodec_err(inst, "Invalid vsi->sf_frm_idx=%u.", > + vsi->sf_frm_idx); > + return -EIO; > + } > + if (vsi->frm_to_show_idx >= VP9_MAX_FRM_BUF_NUM) { > + mtk_vcodec_err(inst, "Invalid vsi->frm_to_show_idx=%u.", > + vsi->frm_to_show_idx); > + return -EIO; > + } > + if (vsi->new_fb_idx >= VP9_MAX_FRM_BUF_NUM) { > + mtk_vcodec_err(inst, "Invalid vsi->new_fb_idx=%u.", > + vsi->new_fb_idx); > + return -EIO; > + } > + return 0; > +} > + > static void vdec_vp9_deinit(unsigned long h_vdec) > { > struct vdec_vp9_inst *inst = (struct vdec_vp9_inst *)h_vdec; > @@ -834,6 +854,12 @@ static int vdec_vp9_decode(unsigned long h_vdec, struct mtk_vcodec_mem *bs, > goto DECODE_ERROR; > } > > + ret = validate_vsi_array_indexes(inst, vsi); > + if (ret) { > + mtk_vcodec_err(inst, "Invalid values from VPU."); > + goto DECODE_ERROR; > + } > + > if (vsi->resolution_changed) { > if (!vp9_alloc_work_buf(inst)) { > ret = -EINVAL; > diff --git a/drivers/media/platform/mtk-vcodec/vdec_drv_if.h b/drivers/media/platform/mtk-vcodec/vdec_drv_if.h > index db6b5205ffb1..ded1154481cd 100644 > --- a/drivers/media/platform/mtk-vcodec/vdec_drv_if.h > +++ b/drivers/media/platform/mtk-vcodec/vdec_drv_if.h > @@ -85,6 +85,8 @@ void vdec_if_deinit(struct mtk_vcodec_ctx *ctx); > * @res_chg : [out] resolution change happens if current bs have different > * picture width/height > * Note: To flush the decoder when reaching EOF, set input bitstream as NULL. > + * > + * Return: 0 on success. -EIO on unrecoverable error. > */ > int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs, > struct vdec_fb *fb, bool *res_chg); ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2017-03-08 3:11 UTC | newest] Thread overview: 3+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2017-03-07 14:42 [PATCH v2 0/1] mtk-vcodec: check the vp9 decoder buffer index from VPU Wu-Cheng Li 2017-03-07 14:42 ` [PATCH v2 1/1] " Wu-Cheng Li 2017-03-08 3:11 ` Tiffany Lin
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