[FFmpeg-trac] #7971(undetermined:new): Hung process poll([{fd=4, events=POLLIN}], 1, 100) = 0 (Timeout)

FFmpeg trac at avcodec.org
Tue Jun 25 13:06:57 EEST 2019


#7971: Hung process poll([{fd=4, events=POLLIN}], 1, 100) = 0 (Timeout)
-------------------------------------+-------------------------------------
             Reporter:  jidckii      |                     Type:  defect
               Status:  new          |                 Priority:  critical
            Component:               |                  Version:  4.1
  undetermined                       |
             Keywords:  poll         |               Blocked By:
  timeout tcp                        |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 I run ffmpeg in the docker container
 {{{
 jidckii/ffmpeg:4-1-0-v1-1-0
 }}}
 The process is frozen and does nothing.
 At the time of the creation of the ticket, it has been hanging for 19
 hours.
 Similar problem: http://michael-peeters.blogspot.com/2019/03/hanging-m3u8
 -downloads-in-ffmpeg.html

 At the time of the problem, the network connection was briefly lost.
 {{{
 % ffmpeg -i input ... output
 ffmpeg -version
 ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
 built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
 configuration: --arch=amd64 --disable-debug --disable-doc --disable-ffplay
 --enable-shared --enable-avresample --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-gpl --enable-libass --enable-libfreetype
 --enable-libvidstab --enable-libmp3lame --enable-libopenjpeg --enable-
 libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-
 libx265 --enable-libxvid --enable-libx264 --enable-nonfree --enable-
 openssl --enable-libfdk_aac --enable-libkvazaar --enable-postproc
 --enable-small --enable-version3 --extra-cflags=-I/usr/local/include
 --extra-ldflags=-L/usr/local/lib --extra-libs=-ldl --prefix=/usr/local
 libavutil      56. 22.100 / 56. 22.100
 libavcodec     58. 35.100 / 58. 35.100
 libavformat    58. 20.100 / 58. 20.100
 libavdevice    58.  5.100 / 58.  5.100
 libavfilter     7. 40.101 /  7. 40.101
 libavresample   4.  0.  0 /  4.  0.  0
 libswscale      5.  3.100 /  5.  3.100
 libswresample   3.  3.100 /  3.  3.100
 libpostproc    55.  3.100 / 55.  3.100



 jidckii at keikogi~14:09:31:~$  ps -ef | grep plot_hd
 root      5877 19491  0 июн24 ?     00:00:28 /usr/local/bin/ffmpeg -xerror
 -abort_on empty_output -nostats -hide_banner -progress /dev/stdout
 -loglevel repeat+level+info -analyzeduration 10000000 -probesize 10000000
 -i rtmp://mediasrv.uralttk.ru/rtplive/plot_hd.stream -vsync -1 -map 0:0
 -c:v copy -an -f hls -use_localtime 1 -hls_time 3 -hls_list_size 10
 -hls_flags delete_segments+second_level_segment_index
 -hls_segment_filename %y%m%d_%H%M%S_%%06d.ts index.m3u8


 $ sudo strace -r -T -f -p 5877
 strace: Process 5877 attached
      0.000000 restart_syscall(<... resuming interrupted poll ...>) = 0
 <0.031468>
      0.031566 poll([{fd=4, events=POLLIN}], 1, 100) = 0 (Timeout)
 <0.100140>
      0.100305 poll([{fd=4, events=POLLIN}], 1, 100) = 0 (Timeout)
 <0.100110>
      0.100408 poll([{fd=4, events=POLLIN}], 1, 100) = 0 (Timeout)
 <0.100164>
      0.100489 poll([{fd=4, events=POLLIN}], 1, 100) = 0 (Timeout)
 <0.100330>
      0.100932 poll([{fd=4, events=POLLIN}], 1, 100) = 0 (Timeout)
 <0.101226>
      0.100666 poll([{fd=4, events=POLLIN}], 1, 100^Cstrace: Process 5877
 detached
  <detached ...>



 lsof -p 3917 (pid in docker container)
 COMMAND  PID USER   FD   TYPE   DEVICE SIZE/OFF     NODE NAME
 ffmpeg  3917 root  cwd    DIR    0,139      340        2 /tmp/live/hls
 ffmpeg  3917 root  rtd    DIR    0,140     4096  1981846 /
 ffmpeg  3917 root  txt    REG    0,140   214240   535741
 /usr/local/bin/ffmpeg
 ffmpeg  3917 root  mem    REG    253,0            535741
 /usr/local/bin/ffmpeg (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406860 /lib/x86_64
 -linux-gnu/libresolv-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406839 /lib/x86_64
 -linux-gnu/libnss_dns-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406841 /lib/x86_64
 -linux-gnu/libnss_files-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537186 /usr/lib/x86_64
 -linux-gnu/libXext.so.6.4.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537180 /usr/lib/x86_64
 -linux-gnu/libX11.so.6.3.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537188 /usr/lib/x86_64
 -linux-gnu/libXrender.so.1.3.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537222 /usr/lib/x86_64
 -linux-gnu/libxcb-render.so.0.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537211 /usr/lib/x86_64
 -linux-gnu/libpixman-1.so.0.34.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406881 /lib/x86_64
 -linux-gnu/libuuid.so.1.3.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537136 /lib/x86_64
 -linux-gnu/libexpat.so.1.6.2 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537134 /lib/x86_64
 -linux-gnu/libbsd.so.0.8.3 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406862 /lib/x86_64
 -linux-gnu/librt-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406831 /lib/x86_64
 -linux-gnu/libmvec-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537190 /usr/lib/x86_64
 -linux-gnu/libcairo.so.2.11400.8 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537207 /usr/lib/x86_64
 -linux-gnu/libogg.so.0.8.2 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406819 /lib/x86_64
 -linux-gnu/libgcc_s.so.1 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            524985 /usr/lib/x86_64
 -linux-gnu/libstdc++.so.6.0.22 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406811 /lib/x86_64
 -linux-gnu/libdl-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537213 /usr/lib/x86_64
 -linux-gnu/libpng16.so.16.28.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537203 /usr/lib/x86_64
 -linux-gnu/libgomp.so.1.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536055
 /usr/local/lib/libfontconfig.so.1.12.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537201 /usr/lib/x86_64
 -linux-gnu/libfribidi.so.0.3.6 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537184 /usr/lib/x86_64
 -linux-gnu/libXdmcp.so.6.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537182 /usr/lib/x86_64
 -linux-gnu/libXau.so.6.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536063
 /usr/local/lib/libkvazaar.so.4.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537228 /usr/lib/x86_64
 -linux-gnu/libxvidcore.so.4.3 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536126
 /usr/local/lib/libx265.so.165 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536123
 /usr/local/lib/libx264.so.155 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536111
 /usr/local/lib/libvorbisenc.so.2.0.11 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536106
 /usr/local/lib/libvorbis.so.0.4.8 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537218 /usr/lib/x86_64
 -linux-gnu/libtheoradec.so.1.1.4 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537220 /usr/lib/x86_64
 -linux-gnu/libtheoraenc.so.1.1.2 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536087
 /usr/local/lib/libopus.so.0.7.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536081
 /usr/local/lib/libopenjp2.so.2.3.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536073 /usr/local/lib
 /libopencore-amrnb.so.0.0.3 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536068
 /usr/local/lib/libmp3lame.so.0.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536051 /usr/local/lib
 /libfdk-aac.so.1.0.1 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536078 /usr/local/lib
 /libopencore-amrwb.so.0.0.3 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406825 /lib/x86_64
 -linux-gnu/liblzma.so.5.2.2 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536121
 /usr/local/lib/libvpx.so.5.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537191 /usr/lib/x86_64
 -linux-gnu/libcrypto.so.1.1 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537214 /usr/lib/x86_64
 -linux-gnu/libssl.so.1.1 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406883 /lib/x86_64
 -linux-gnu/libz.so.1.2.8 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406800 /lib/x86_64
 -linux-gnu/libbz2.so.1.0.4 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536059
 /usr/local/lib/libfreetype.so.6.16.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536101
 /usr/local/lib/libvidstab.so.1.1 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536022
 /usr/local/lib/libass.so.9.0.2 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537224 /usr/lib/x86_64
 -linux-gnu/libxcb-shm.so.0.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            537226 /usr/lib/x86_64
 -linux-gnu/libxcb.so.1.1.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406801 /lib/x86_64
 -linux-gnu/libc-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406858 /lib/x86_64
 -linux-gnu/libpthread-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406826 /lib/x86_64
 -linux-gnu/libm-2.24.so (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536046
 /usr/local/lib/libavutil.so.56.22.100 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536099
 /usr/local/lib/libswscale.so.5.3.100 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536095
 /usr/local/lib/libswresample.so.3.3.100 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536091
 /usr/local/lib/libpostproc.so.55.3.100 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536042
 /usr/local/lib/libavresample.so.4.0.0 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536026
 /usr/local/lib/libavcodec.so.58.35.100 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536038
 /usr/local/lib/libavformat.so.58.20.100 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536034
 /usr/local/lib/libavfilter.so.7.40.101 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            536030
 /usr/local/lib/libavdevice.so.58.5.100 (path dev=0,140)
 ffmpeg  3917 root  mem    REG    253,0            406783 /lib/x86_64
 -linux-gnu/ld-2.24.so (path dev=0,140)
 ffmpeg  3917 root    0r   CHR      1,3      0t0        6 /dev/null
 ffmpeg  3917 root    1w  FIFO     0,12      0t0 15462578 pipe
 ffmpeg  3917 root    2w  FIFO     0,12      0t0 15462579 pipe
 ffmpeg  3917 root    3w  FIFO     0,12      0t0 15462578 pipe
 ffmpeg  3917 root    4u  IPv4 15462591      0t0      TCP
 f4915a94d2e8:42724->80.78.116.125:1935 (ESTABLISHED)
 ffmpeg  3917 root    5w   REG    0,139  1048576        9
 /tmp/live/hls/190624_150308_000197.ts



 root at f4915a94d2e8:/opt/yucca# ls -la  /proc/3917/fd/4
 lrwx------ 1 root root 64 Jun 25 09:12 /proc/3917/fd/4 ->
 socket:[15462591]
 root at f4915a94d2e8:/opt/yucca# lsof -p 3917 | grep 15462591
 ffmpeg  3917 root    4u  IPv4 15462591      0t0      TCP
 f4915a94d2e8:42724->80.78.116.125:1935 (ESTABLISHED)



 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7971>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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