diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2013-12-15 03:36:29 +0400 |
---|---|---|
committer | Michael Niedermayer <michaelni@gmx.at> | 2013-12-15 03:37:19 +0400 |
commit | b2361cfb94738298a6c4037cc348fe5015efb841 (patch) | |
tree | ee8031a8290b72ec36c9fac6a3e5e2f46d9aebea /libavcodec/svq3.c | |
parent | 7a5d3a41fe380422cca80279732f297a2e118212 (diff) |
avcodec/svq3: cleanup context in case init fails
Fixes memleaks
Fixes: msan_uninit-mem_7ff57193e77e_2715_RAW512K_Stream_004.mov
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/svq3.c')
-rw-r--r-- | libavcodec/svq3.c | 44 |
1 files changed, 28 insertions, 16 deletions
diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c index 189be48c36..f24f2e4b1d 100644 --- a/libavcodec/svq3.c +++ b/libavcodec/svq3.c @@ -158,6 +158,8 @@ static const uint32_t svq3_dequant_coeff[32] = { 61694, 68745, 77615, 89113, 100253, 109366, 126635, 141533 }; +static int svq3_decode_end(AVCodecContext *avctx); + void ff_svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp) { const int qmul = svq3_dequant_coeff[qp]; @@ -868,19 +870,18 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) unsigned char *extradata_end; unsigned int size; int marker_found = 0; + int ret; s->cur_pic = av_mallocz(sizeof(*s->cur_pic)); s->last_pic = av_mallocz(sizeof(*s->last_pic)); s->next_pic = av_mallocz(sizeof(*s->next_pic)); if (!s->next_pic || !s->last_pic || !s->cur_pic) { - av_freep(&s->cur_pic); - av_freep(&s->last_pic); - av_freep(&s->next_pic); - return AVERROR(ENOMEM); + ret = AVERROR(ENOMEM); + goto fail; } - if (ff_h264_decode_init(avctx) < 0) - return -1; + if ((ret = ff_h264_decode_init(avctx)) < 0) + goto fail; ff_hpeldsp_init(&s->hdsp, avctx->flags); h->flags = avctx->flags; @@ -915,8 +916,10 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) int frame_size_code; size = AV_RB32(&extradata[4]); - if (size > extradata_end - extradata - 8) - return AVERROR_INVALIDDATA; + if (size > extradata_end - extradata - 8) { + ret = AVERROR_INVALIDDATA; + goto fail; + } init_get_bits(&gb, extradata + 8, size * 8); /* 'frame size code' and optional 'width, height' */ @@ -970,8 +973,10 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) /* unknown field */ skip_bits1(&gb); - if (skip_1stop_8data_bits(&gb) < 0) - return AVERROR_INVALIDDATA; + if (skip_1stop_8data_bits(&gb) < 0) { + ret = AVERROR_INVALIDDATA; + goto fail; + } s->unknown_flag = get_bits1(&gb); avctx->has_b_frames = !h->low_delay; @@ -989,8 +994,10 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) uint8_t *buf; if (watermark_height <= 0 || - (uint64_t)watermark_width * 4 > UINT_MAX / watermark_height) - return -1; + (uint64_t)watermark_width * 4 > UINT_MAX / watermark_height) { + ret = -1; + goto fail; + } buf = av_malloc(buf_len); av_log(avctx, AV_LOG_DEBUG, "watermark size: %dx%d\n", @@ -1003,7 +1010,8 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) av_log(avctx, AV_LOG_ERROR, "could not uncompress watermark logo\n"); av_free(buf); - return -1; + ret = -1; + goto fail; } s->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); s->watermark_key = s->watermark_key << 16 | s->watermark_key; @@ -1013,7 +1021,8 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) #else av_log(avctx, AV_LOG_ERROR, "this svq3 file contains watermark which need zlib support compiled in\n"); - return -1; + ret = -1; + goto fail; #endif } } @@ -1028,12 +1037,15 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) s->h_edge_pos = h->mb_width * 16; s->v_edge_pos = h->mb_height * 16; - if (ff_h264_alloc_tables(h) < 0) { + if ((ret = ff_h264_alloc_tables(h)) < 0) { av_log(avctx, AV_LOG_ERROR, "svq3 memory allocation failed\n"); - return AVERROR(ENOMEM); + goto fail; } return 0; +fail: + svq3_decode_end(avctx); + return ret; } static void free_picture(AVCodecContext *avctx, Picture *pic) |