On Mon, Jan 07, 2019 at 08:51:33PM +0100, Paul B Mahol wrote: > On 1/7/19, https://ieeexplore.ieee.org/document/7291728Michael > Niedermayer <mich...@niedermayer.cc> wrote: > > On Mon, Jan 07, 2019 at 07:41:04PM +0100, Paul B Mahol wrote: > >> On 1/7/19, Michael Niedermayer <mich...@niedermayer.cc> wrote: > >> > Fixes: Timeout > >> > Fixes: > >> > 11354/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QPEG_fuzzer-5766275943366656 > >> > > >> > Before: Executed > >> > clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QPEG_fuzzer-5766275943366656 > >> > in 9470 ms > >> > After : Executed > >> > clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QPEG_fuzzer-5766275943366656 > >> > in 134 ms > >> > > >> > Found-by: continuous fuzzing process > >> > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > >> > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > >> > --- > >> > libavcodec/qpeg.c | 5 ++++- > >> > 1 file changed, 4 insertions(+), 1 deletion(-) > >> > > >> > diff --git a/libavcodec/qpeg.c b/libavcodec/qpeg.c > >> > index cb452621e7..654fd998d6 100644 > >> > --- a/libavcodec/qpeg.c > >> > +++ b/libavcodec/qpeg.c > >> > @@ -80,7 +80,10 @@ static void qpeg_decode_intra(QpegContext *qctx, > >> > uint8_t > >> > *dst, > >> > > >> > p = bytestream2_get_byte(&qctx->buffer); > >> > for(i = 0; i < run; i++) { > >> > - dst[filled++] = p; > >> > + int step = FFMIN(run - i, width - filled); > >> > + memset(dst+filled, p, step); > >> > + filled += step; > >> > + i += step - 1; > >> > if (filled >= width) { > >> > filled = 0; > >> > dst -= stride; > >> > -- > >> > 2.20.1 > >> > > >> > _______________________________________________ > >> > ffmpeg-devel mailing list > >> > ffmpeg-devel@ffmpeg.org > >> > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel > >> > > >> > >> lgtm if output does not change. > > > > fate-qpeg passes and it executes this codepath > > do you have any other files i should test ? > > > > look in samples.ffmpeg.org ?
ive found and tested qpeg-test.avi Space.avi Clock.avi anything else i should test ? thanks [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The educated differ from the uneducated as much as the living from the dead. -- Aristotle
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