[FFmpeg-trac] #7164(undetermined:new): segfaults when muxing opus / vorbis into a dash stream
FFmpeg
trac at avcodec.org
Wed Apr 25 16:46:55 EEST 2018
#7164: segfaults when muxing opus / vorbis into a dash stream
--------------------------------------+----------------------------------
Reporter: jcowgill | Type: defect
Status: new | Priority: normal
Component: undetermined | Version:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
--------------------------------------+----------------------------------
{{{
Starting program: /usr/bin/ffmpeg -f lavfi -i sine=d=0.1 -c:a libopus -f
dash -
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
ffmpeg version 4.0-2 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7 (Debian 7.3.0-16)
configuration: --prefix=/usr --extra-version=2 --toolchain=hardened
--libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu
--enable-gpl --disable-stripping --enable-avresample --disable-
filter=resample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libcodec2 --enable-libflite --enable-
libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme
--enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa
--enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-
libpulse --enable-librsvg --enable-librubberband --enable-libshine
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2
--enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-
omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394
--enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r
--enable-libopencv --enable-libx264 --enable-shared
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
[New Thread 0x7fffd4a5d700 (LWP 6964)]
[New Thread 0x7fffd425c700 (LWP 6965)]
[New Thread 0x7fffd3a5b700 (LWP 6966)]
[New Thread 0x7fffd325a700 (LWP 6967)]
[New Thread 0x7fffd2a59700 (LWP 6968)]
[New Thread 0x7fffd2258700 (LWP 6969)]
[New Thread 0x7fffd1a57700 (LWP 6970)]
[New Thread 0x7fffd1256700 (LWP 6971)]
Input #0, lavfi, from 'sine=d=0.1':
Duration: N/A, start: 0.000000, bitrate: 705 kb/s
Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le (native) -> opus (libopus))
Press [q] to stop, [?] for help
[New Thread 0x7fffd0a55700 (LWP 6972)]
[New Thread 0x7fffd0254700 (LWP 6973)]
[New Thread 0x7fffcfa53700 (LWP 6974)]
[New Thread 0x7fffcf252700 (LWP 6975)]
[New Thread 0x7fffcea51700 (LWP 6976)]
[New Thread 0x7fffce250700 (LWP 6977)]
[New Thread 0x7fffcda4f700 (LWP 6978)]
[New Thread 0x7fffcd24e700 (LWP 6979)]
[libopus @ 0x5555558556c0] No bit rate set. Defaulting to 64000 bps.
[dash @ 0x555555853a00] Opening 'init-stream0.m4s' for writing
Thread 1 "ffmpeg" received signal SIGSEGV, Segmentation fault.
av_crc (ctx=0x7ffff524e2a0 <av_crc_table+16384>, crc=crc at entry=4294967295,
buffer=buffer at entry=0x6 <error: Cannot access memory at address 0x6>,
length=length at entry=18446744073709551610)
at src/libavutil/crc.c:403
warning: Source file is more recent than executable.
403 crc ^= av_le2ne32(*(const uint32_t *) buffer); buffer
+= 4;
(gdb) bt
#0 0x00007ffff4fec2b8 in av_crc (ctx=0x7ffff524e2a0 <av_crc_table+16384>,
crc=crc at entry=4294967295, buffer=buffer at entry=0x6 <error: Cannot access
memory at address 0x6>, length=length at entry=18446744073709551610) at
src/libavutil/crc.c:403
#1 0x00007ffff733a21e in end_ebml_master_crc32 (pb=0x5555558862c0,
dyn_cp=dyn_cp at entry=0x555555886950, mkv=<optimized out>, mkv=<optimized
out>, master=...) at src/libavformat/matroskaenc.c:358
#2 0x00007ffff733f13b in mkv_write_flush_packet (s=0x5555558848c0,
pkt=<optimized out>) at src/libavformat/matroskaenc.c:2496
#3 0x00007ffff73889f6 in av_write_frame (s=0x5555558848c0,
pkt=pkt at entry=0x0) at src/libavformat/mux.c:888
#4 0x00007ffff72d6c86 in flush_dynbuf (range_length=<synthetic pointer>,
os=0x555555883740) at src/libavformat/dashenc.c:251
#5 0x00007ffff72d6c86 in flush_init_segment (os=0x555555883740,
s=0x555555853a00) at src/libavformat/dashenc.c:290
#6 0x00007ffff72d6c86 in dash_init (s=0x555555853a00) at
src/libavformat/dashenc.c:995
#7 0x00007ffff7387d99 in init_muxer (options=0x555555852fc8,
s=0x555555853a00) at src/libavformat/mux.c:418
#8 0x00007ffff7387d99 in avformat_init_output (s=0x555555853a00,
options=0x555555852fc8) at src/libavformat/mux.c:492
#9 0x00007ffff73886f5 in avformat_write_header (s=0x555555853a00,
options=<optimized out>) at src/libavformat/mux.c:515
#10 0x000055555557c070 in check_init_output_file (of=0x555555852fc0,
file_index=0) at src/fftools/ffmpeg.c:2964
#11 0x0000555555580234 in init_output_stream (ost=<optimized out>,
error=<optimized out>, error_len=1024) at src/fftools/ffmpeg.c:3593
#12 0x0000555555582249 in reap_filters (flush=0) at
src/fftools/ffmpeg.c:1432
#13 0x0000555555560d26 in transcode_step () at src/fftools/ffmpeg.c:4571
#14 0x0000555555560d26 in transcode () at src/fftools/ffmpeg.c:4615
#15 0x0000555555560d26 in main (argc=<optimized out>, argv=<optimized
out>) at src/fftools/ffmpeg.c:4815
}}}
Also fails with {{{-c:a vorbis}}}.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7164>
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