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| | From the upstream repo, can be removed after 1.14.1
https://github.com/webmproject/libvpx/commit/df9fd9d5b7325060b2b921558a1eb20ca7880937.patch
https://www.openwall.com/lists/oss-security/2023/09/30/4
The test change didn't apply so it was removed from the patch
From df9fd9d5b7325060b2b921558a1eb20ca7880937 Mon Sep 17 00:00:00 2001
From: Jerome Jiang <jianj@google.com>
Date: Thu, 30 Jun 2022 13:48:56 -0400
Subject: [PATCH] Fix bug with smaller width bigger size
Fixed previous patch that clusterfuzz failed on.
Local fuzzing passing overnight.
Bug: webm:1642
Change-Id: If0e08e72abd2e042efe4dcfac21e4cc51afdfdb9
(cherry picked from commit 263682c9a29395055f3b3afe2d97be1828a6223f)
---
test/resize_test.cc | 11 +++--------
vp9/common/vp9_alloccommon.c | 13 ++++++-------
vp9/encoder/vp9_encoder.c | 27 +++++++++++++++++++++++++--
3 files changed, 34 insertions(+), 17 deletions(-)
diff --git a/vp9/common/vp9_alloccommon.c b/vp9/common/vp9_alloccommon.c
index e53883f621d..9e73e40ea09 100644
--- a/vp9/common/vp9_alloccommon.c
+++ b/vp9/common/vp9_alloccommon.c
@@ -135,13 +135,6 @@ int vp9_alloc_context_buffers(VP9_COMMON *cm, int width, int height) {
cm->free_mi(cm);
if (cm->alloc_mi(cm, new_mi_size)) goto fail;
}
-
- if (cm->seg_map_alloc_size < cm->mi_rows * cm->mi_cols) {
- // Create the segmentation map structure and set to 0.
- free_seg_map(cm);
- if (alloc_seg_map(cm, cm->mi_rows * cm->mi_cols)) goto fail;
- }
-
if (cm->above_context_alloc_cols < cm->mi_cols) {
vpx_free(cm->above_context);
cm->above_context = (ENTROPY_CONTEXT *)vpx_calloc(
@@ -156,6 +149,12 @@ int vp9_alloc_context_buffers(VP9_COMMON *cm, int width, int height) {
cm->above_context_alloc_cols = cm->mi_cols;
}
+ if (cm->seg_map_alloc_size < cm->mi_rows * cm->mi_cols) {
+ // Create the segmentation map structure and set to 0.
+ free_seg_map(cm);
+ if (alloc_seg_map(cm, cm->mi_rows * cm->mi_cols)) goto fail;
+ }
+
if (vp9_alloc_loop_filter(cm)) goto fail;
return 0;
diff --git a/vp9/encoder/vp9_encoder.c b/vp9/encoder/vp9_encoder.c
index b66fdc0bca3..e3850775455 100644
--- a/vp9/encoder/vp9_encoder.c
+++ b/vp9/encoder/vp9_encoder.c
@@ -1973,6 +1973,17 @@ static void alloc_copy_partition_data(VP9_COMP *cpi) {
}
}
+static void free_copy_partition_data(VP9_COMP *cpi) {
+ vpx_free(cpi->prev_partition);
+ cpi->prev_partition = NULL;
+ vpx_free(cpi->prev_segment_id);
+ cpi->prev_segment_id = NULL;
+ vpx_free(cpi->prev_variance_low);
+ cpi->prev_variance_low = NULL;
+ vpx_free(cpi->copied_frame_cnt);
+ cpi->copied_frame_cnt = NULL;
+}
+
void vp9_change_config(struct VP9_COMP *cpi, const VP9EncoderConfig *oxcf) {
VP9_COMMON *const cm = &cpi->common;
RATE_CONTROL *const rc = &cpi->rc;
@@ -2052,6 +2063,8 @@ void vp9_change_config(struct VP9_COMP *cpi, const VP9EncoderConfig *oxcf) {
new_mi_size = cm->mi_stride * calc_mi_size(cm->mi_rows);
if (cm->mi_alloc_size < new_mi_size) {
vp9_free_context_buffers(cm);
+ vp9_free_pc_tree(&cpi->td);
+ vpx_free(cpi->mbmi_ext_base);
alloc_compressor_data(cpi);
realloc_segmentation_maps(cpi);
cpi->initial_width = cpi->initial_height = 0;
@@ -2070,8 +2083,18 @@ void vp9_change_config(struct VP9_COMP *cpi, const VP9EncoderConfig *oxcf) {
update_frame_size(cpi);
if (last_w != cpi->oxcf.width || last_h != cpi->oxcf.height) {
- memset(cpi->consec_zero_mv, 0,
- cm->mi_rows * cm->mi_cols * sizeof(*cpi->consec_zero_mv));
+ vpx_free(cpi->consec_zero_mv);
+ CHECK_MEM_ERROR(
+ cm, cpi->consec_zero_mv,
+ vpx_calloc(cm->mi_rows * cm->mi_cols, sizeof(*cpi->consec_zero_mv)));
+
+ vpx_free(cpi->skin_map);
+ CHECK_MEM_ERROR(
+ cm, cpi->skin_map,
+ vpx_calloc(cm->mi_rows * cm->mi_cols, sizeof(cpi->skin_map[0])));
+
+ free_copy_partition_data(cpi);
+ alloc_copy_partition_data(cpi);
if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ)
vp9_cyclic_refresh_reset_resize(cpi);
rc->rc_1_frame = 0;
|