mkvalidator v0.6.0 crashes and master segfaults against sample .mkv #211
Description
This happens against real video files too, but this is a short repro using source builds on Linux.
Repro:
- Generate dummy video
/mnt/tmp/ # ffmpeg -f lavfi -i color=size=1280x720:duration=5:rate=25:color=black -f lavfi -i anullsrc=r=44100:cl=stereo -c:v libx264 -c:a aac -shortest dummy.mkv
ffmpeg version 6.1.2 Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 14.2.0 (Alpine 14.2.0)
configuration: --prefix=/usr --disable-librtmp --disable-lzma --disable-static --disable-stripping --enable-avfilter --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-libmp3lame --enable-libopenmpt --enable-libopus --enable-libplacebo --enable-libpulse --enable-librav1e --enable-librist --enable-libsoxr --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-lto=auto --enable-lv2 --enable-openssl --enable-pic --enable-postproc --enable-pthreads --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-vulkan --optflags=-O3 --enable-libjxl --enable-libsvtav1 --enable-libvpl
libavutil 58. 29.100 / 58. 29.100
libavcodec 60. 31.102 / 60. 31.102
libavformat 60. 16.100 / 60. 16.100
libavdevice 60. 3.100 / 60. 3.100
libavfilter 9. 12.100 / 9. 12.100
libswscale 7. 5.100 / 7. 5.100
libswresample 4. 12.100 / 4. 12.100
libpostproc 57. 3.100 / 57. 3.100
Input #0, lavfi, from 'color=size=1280x720:duration=5:rate=25:color=black':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: wrapped_avframe, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 25 tbn
Input #1, lavfi, from 'anullsrc=r=44100:cl=stereo':
Duration: N/A, start: 0.000000, bitrate: 705 kb/s
Stream #1:0: Audio: pcm_u8, 44100 Hz, stereo, u8, 705 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (wrapped_avframe (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (pcm_u8 (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7f30d2bab940] using SAR=1/1
[libx264 @ 0x7f30d2bab940] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7f30d2bab940] profile High, level 3.1, 4:2:0, 8-bit
[libx264 @ 0x7f30d2bab940] 264 - core 164 r3108 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=22 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, matroska, to 'dummy.mkv':
Metadata:
encoder : Lavf60.16.100
Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 1k tbn
Metadata:
encoder : Lavc60.31.102 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 44100 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc60.31.102 aac
[out#0/matroska @ 0x7f30da3d0580] video:6kB audio:1kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 39.901823%
frame= 125 fps=101 q=-1.0 Lsize= 10kB time=00:00:04.96 bitrate= 16.1kbits/s speed=4.02x
[libx264 @ 0x7f30d2bab940] frame I:1 Avg QP: 9.00 size: 215
[libx264 @ 0x7f30d2bab940] frame P:31 Avg QP: 9.23 size: 46
[libx264 @ 0x7f30d2bab940] frame B:93 Avg QP:12.67 size: 38
[libx264 @ 0x7f30d2bab940] consecutive B-frames: 0.8% 0.0% 0.0% 99.2%
[libx264 @ 0x7f30d2bab940] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x7f30d2bab940] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0% 0.0% 0.0% 0.0% 0.0% skip:100.0%
[libx264 @ 0x7f30d2bab940] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0% 0.0% direct: 0.0% skip:100.0%
[libx264 @ 0x7f30d2bab940] 8x8 transform intra:0.0%
[libx264 @ 0x7f30d2bab940] coded y,uvDC,uvAC intra: 0.0% 0.0% 0.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7f30d2bab940] i16 v,h,dc,p: 98% 0% 2% 0%
[libx264 @ 0x7f30d2bab940] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x7f30d2bab940] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7f30d2bab940] kb/s:8.22
[aac @ 0x7f30d27ff8c0] Qavg: 65536.000
- Run mkvalidator against video
/mnt/tmp/ # foundation-source/build/mkvalidator/mkvalidator dummy.mkv
..Segmentation fault (core dumped)
/mnt/tmp/ # mkvalidator-0.6.0/build/mkvalidator/mkvalidator dummy.mkv
mkvalidator 0.6.0: the file appears to be valid
file "dummy.mkv"
created with Lavf60.16.100 / Lavf60.16.100
Assertion failed: p->Base.Base.RefCount==1 (/mnt/mkvalidator-0.6.0/corec/corec/node/node.c: NodeContext_Done: 2807)
Aborted (core dumped)
gcc version:
/mnt/tmp/ # gcc --version
gcc (Alpine 14.2.0) 14.2.0
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.