On 7/23/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: > On Mon, Jul 22, 2019 at 08:20:54AM +0200, Paul B Mahol wrote: >> On 7/21/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: >> > On Sun, Jul 21, 2019 at 10:48:26AM +0200, Paul B Mahol wrote: >> >> On 7/21/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: >> >> > Fixes: Timeout (22 -> 7 sec) >> >> > Fixes: >> >> > 15173/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HQX_fuzzer-5662556846292992 >> >> > >> >> > Found-by: continuous fuzzing process >> >> > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg >> >> > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> >> >> > --- >> >> > libavcodec/hqx.c | 4 ++++ >> >> > 1 file changed, 4 insertions(+) >> >> > >> >> > diff --git a/libavcodec/hqx.c b/libavcodec/hqx.c >> >> > index bc24ba91d1..8639d77a41 100644 >> >> > --- a/libavcodec/hqx.c >> >> > +++ b/libavcodec/hqx.c >> >> > @@ -471,6 +471,10 @@ static int hqx_decode_frame(AVCodecContext >> >> > *avctx, >> >> > void >> >> > *data, >> >> > avctx->height = ctx->height; >> >> > avctx->bits_per_raw_sample = 10; >> >> > >> >> > + if (avctx->coded_width / 16 * (avctx->coded_height / 16) * >> >> > + (100 - avctx->discard_damaged_percentage) / 100 > 8LL * >> >> > avpkt->size) >> >> > + return AVERROR_INVALIDDATA; >> >> >> >> Why just this change and not something better? >> > >> > What would you prefer exactly ? >> >> Something that works with pure black video. > > Can you share the failing video file ? > I thought theres a minimum size of 1 vlc code (2 bit seem the smallest) > per 16x16 block. But quite possibly i might have missed something >
This is very disappointing. There is no freely available encoder for HQX. And the one who commits stuff need to make sure it does not introduce regressions. > Thanks > > > [...] > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > The educated differ from the uneducated as much as the living from the > dead. -- Aristotle > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".