[chuck-users] 147th shred removed...segmentation fault? (Ryan Supak)

Michael Heuer heuermh at gmail.com
Tue Jun 24 09:16:17 EDT 2014 

On linux, my example works fine with 1.3.3.0

...
[chuck](VM): removing shred: 35000 (spork~exp)...
count 34998
[chuck](VM): removing shred: 35001 (spork~exp)...
count 34999
^C[chuck]: cleaning up...

but not with 1.3.4.0 built with alsa support

$ ./chuck --silent ~/working/lick/examples/dmxBug.ck
[chuck](VM): removing shred: 2 (spork~exp)...
count 0
[chuck](VM): removing shred: 3 (spork~exp)...
count 1
[chuck](VM): removing shred: 4 (spork~exp)...
count 2
[chuck](VM): removing shred: 5 (spork~exp)...
count 3
[chuck](VM): removing shred: 6 (spork~exp)...
count 4
[chuck](VM): removing shred: 7 (spork~exp)...
count 5
[chuck](VM): removing shred: 8 (spork~exp)...
count 6
[chuck](VM): removing shred: 9 (spork~exp)...
count 7
[chuck](VM): removing shred: 10 (spork~exp)...
count 8
[chuck](VM): removing shred: 11 (spork~exp)...
count 9
[chuck](VM): removing shred: 12 (spork~exp)...
count 10
[chuck](VM): removing shred: 13 (spork~exp)...
count 11
[chuck](VM): removing shred: 14 (spork~exp)...
count 12
[chuck](VM): removing shred: 15 (spork~exp)...
count 13
[chuck](VM): removing shred: 16 (spork~exp)...
count 14
[chuck](VM): removing shred: 17 (spork~exp)...
count 15
[chuck](VM): removing shred: 18 (spork~exp)...
count 16
[chuck](VM): removing shred: 19 (spork~exp)...
count 17
[chuck](VM): removing shred: 20 (spork~exp)...
count 18
[chuck](VM): removing shred: 21 (spork~exp)...
count 19
[chuck](VM): removing shred: 22 (spork~exp)...
count 20
[chuck](VM): removing shred: 23 (spork~exp)...*** buffer overflow
detected ***: ./chuck terminated
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7fd43586cf47]
/lib/x86_64-linux-gnu/libc.so.6(+0x109e40)[0x7fd43586be40]
/lib/x86_64-linux-gnu/libc.so.6(+0x108d13)[0x7fd43586ad13]
./chuck[0x41585a]
./chuck[0x41cabb]
./chuck[0x46d898]
./chuck[0x50517f]
./chuck[0x4245d0]
./chuck[0x418d0e]
./chuck[0x41dbd2]
./chuck[0x41e077]
./chuck[0x40b6fd]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7fd43578376d]
./chuck[0x40dc55]
======= Memory map: ========
00400000-0059d000 r-xp 00000000 08:03 269080
  /home/heuermh/bin/chuck-1.3.4.0/src/chuck
0079d000-0079e000 r--p 0019d000 08:03 269080
  /home/heuermh/bin/chuck-1.3.4.0/src/chuck
0079e000-007c5000 rw-p 0019e000 08:03 269080
  /home/heuermh/bin/chuck-1.3.4.0/src/chuck
007c5000-0084a000 rw-p 00000000 00:00 0
01db2000-020f9000 rw-p 00000000 00:00 0                                  [heap]
7fd428000000-7fd428021000 rw-p 00000000 00:00 0
7fd428021000-7fd42c000000 ---p 00000000 00:00 0
7fd42f3d8000-7fd42f3d9000 ---p 00000000 00:00 0
7fd42f3d9000-7fd42fbd9000 rw-p 00000000 00:00 0
7fd42fbd9000-7fd42fbdd000 r-xp 00000000 08:03 802428
  /usr/lib/chuck/GVerb.chug
7fd42fbdd000-7fd42fddd000 ---p 00004000 08:03 802428
  /usr/lib/chuck/GVerb.chug
7fd42fddd000-7fd42fdde000 r--p 00004000 08:03 802428
  /usr/lib/chuck/GVerb.chug
7fd42fdde000-7fd42fddf000 rw-p 00005000 08:03 802428
  /usr/lib/chuck/GVerb.chug
7fd42fddf000-7fd42fde1000 r-xp 00000000 08:03 802423
  /usr/lib/chuck/KasFilter.chug
7fd42fde1000-7fd42ffe0000 ---p 00002000 08:03 802423
  /usr/lib/chuck/KasFilter.chug
7fd42ffe0000-7fd42ffe1000 r--p 00001000 08:03 802423
  /usr/lib/chuck/KasFilter.chug
7fd42ffe1000-7fd42ffe2000 rw-p 00002000 08:03 802423
  /usr/lib/chuck/KasFilter.chug
7fd42ffe2000-7fd42fff0000 r-xp 00000000 08:03 802430
  /usr/lib/chuck/Spectacle.chug
7fd42fff0000-7fd4301ef000 ---p 0000e000 08:03 802430
  /usr/lib/chuck/Spectacle.chug
7fd4301ef000-7fd4301f0000 r--p 0000d000 08:03 802430
  /usr/lib/chuck/Spectacle.chug
7fd4301f0000-7fd4301f1000 rw-p 0000e000 08:03 802430
  /usr/lib/chuck/Spectacle.chug
7fd4301f1000-7fd430209000 r-xp 00000000 08:03 3411496
  /lib/x86_64-linux-gnu/libresolv-2.15.so
7fd430209000-7fd430409000 ---p 00018000 08:03 3411496
  /lib/x86_64-linux-gnu/libresolv-2.15.so
7fd430409000-7fd43040a000 r--p 00018000 08:03 3411496
  /lib/x86_64-linux-gnu/libresolv-2.15.so
7fd43040a000-7fd43040b000 rw-p 00019000 08:03 3411496
  /lib/x86_64-linux-gnu/libresolv-2.15.so
7fd43040b000-7fd43040d000 rw-p 00000000 00:00 0
7fd43040d000-7fd430424000 r-xp 00000000 08:03 3411602
  /lib/x86_64-linux-gnu/libnsl-2.15.so
7fd430424000-7fd430623000 ---p 00017000 08:03 3411602
  /lib/x86_64-linux-gnu/libnsl-2.15.so
7fd430623000-7fd430624000 r--p 00016000 08:03 3411602
  /lib/x86_64-linux-gnu/libnsl-2.15.so
7fd430624000-7fd430625000 rw-p 00017000 08:03 3411602
  /lib/x86_64-linux-gnu/libnsl-2.15.so
7fd430625000-7fd430627000 rw-p 00000000 00:00 0
7fd430627000-7fd43062c000 r-xp 00000000 08:03 663153
  /usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7fd43062c000-7fd43082b000 ---p 00005000 08:03 663153
  /usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7fd43082b000-7fd43082c000 r--p 00004000 08:03 663153
  /usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7fd43082c000-7fd43082d000 rw-p 00005000 08:03 663153
  /usr/lib/x86_64-linux-gnu/libXdmcp.so.6.0.0
7fd43082d000-7fd43082f000 r-xp 00000000 08:03 663140
  /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7fd43082f000-7fd430a2e000 ---p 00002000 08:03 663140
  /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7fd430a2e000-7fd430a2f000 r--p 00001000 08:03 663140
  /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7fd430a2f000-7fd430a30000 rw-p 00002000 08:03 663140
  /usr/lib/x86_64-linux-gnu/libXau.so.6.0.0
7fd430a30000-7fd430a35000 r-xp 00000000 08:03 663205
  /usr/lib/x86_64-linux-gnu/libasyncns.so.0.3.1
7fd430a35000-7fd430c34000 ---p 00005000 08:03 663205
  /usr/lib/x86_64-linux-gnu/libasyncns.so.0.3.1
7fd430c34000-7fd430c35000 r--p 00004000 08:03 663205
  /usr/lib/x86_64-linux-gnu/libasyncns.so.0.3.1
7fd430c35000-7fd430c36000 rw-p 00005000 08:03 663205
  /usr/lib/x86_64-linux-gnu/libasyncns.so.0.3.1
7fd430c36000-7fd430c3e000 r-xp 00000000 08:03 3411651
  /lib/x86_64-linux-gnu/libwrap.so.0.7.6
7fd430c3e000-7fd430e3d000 ---p 00008000 08:03 3411651
  /lib/x86_64-linux-gnu/libwrap.so.0.7.6
7fd430e3d000-7fd430e3e000 r--p 00007000 08:03 3411651
  /lib/x86_64-linux-gnu/libwrap.so.0.7.6
7fd430e3e000-7fd430e3f000 rw-p 00008000 08:03 3411651
  /lib/x86_64-linux-gnu/libwrap.so.0.7.6
7fd430e3f000-7fd430e5c000 r-xp 00000000 08:03 657105
  /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7fd430e5c000-7fd43105b000 ---p 0001d000 08:03 657105
  /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7fd43105b000-7fd43105c000 r--p 0001c000 08:03 657105
  /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7fd43105c000-7fd43105d000 rw-p 0001d000 08:03 657105
  /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0
7fd43105d000-7fd431064000 r-xp 00000000 08:03 663531
  /usr/lib/x86_64-linux-gnu/libjson.so.0.0.1
7fd431064000-7fd431263000 ---p 00007000 08:03 663531
  /usr/lib/x86_64-linux-gnu/libjson.so.0.0.1
7fd431263000-7fd431264000 r--p 00006000 08:03 663531
  /usr/lib/x86_64-linux-gnu/libjson.so.0.0.1
7fd431264000-7fd431265000 rw-p 00007000 08:03 663531
  /usr/lib/x86_64-linux-gnu/libjson.so.0.0.1
7fd431265000-7fd431287000 r-xp 00000000 08:03 3411639
  /lib/x86_64-linux-gnu/libtinfo.so.5.9
7fd431287000-7fd431487000 ---p 00022000 08:03 3411639
  /lib/x86_64-linux-gnu/libtinfo.so.5.9
7fd431487000-7fd43148b000 r--p 00022000 08:03 3411639
  /lib/x86_64-linux-gnu/libtinfo.so.5.9
7fd43148b000-7fd43148c000 rw-p 00026000 08:03 3411639
  /lib/x86_64-linux-gnu/libtinfo.so.5.9
7fd43148c000-7fd4314e8000 r-xp 00000000 08:03 662027
  /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
7fd4314e8000-7fd4316e8000 ---p 0005c000 08:03 662027
  /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
7fd4316e8000-7fd4316e9000 r--p 0005c000 08:03 662027
  /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
7fd4316e9000-7fd4316ea000 rw-p 0005d000 08:03 662027
  /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
7fd4316ea000-7fd431730000 r-xp 00000000 08:03 661818
  /usr/lib/x86_64-linux-gnu/libpulse.so.0.13.5
7fd431730000-7fd431930000 ---p 00046000 08:03 661818
  /usr/lib/x86_64-linux-gnu/libpulse.so.0.13.5
7fd431930000-7fd431931000 r--p 00046000 08:03 661818
  /usr/lib/x86_64-linux-gnu/libpulse.so.0.13.5
7fd431931000-7fd431932000 rw-p 00047000 08:03 661818
  /usr/lib/x86_64-linux-gnu/libpulse.so.0.13.5
7fd431932000-7fd43196e000 r-xp 00000000 08:03 3411615
  /lib/x86_64-linux-gnu/libpcre.so.3.12.1
7fd43196e000-7fd431b6d000 ---p 0003c000 08:03 3411615
  /lib/x86_64-linux-gnu/libpcre.so.3.12.1
7fd431b6d000-7fd431b6e000 r--p 0003b000 08:03 3411615
  /lib/x86_64-linux-gnu/libpcre.so.3.12.1
7fd431b6e000-7fd431b6f000 rw-p 0003c000 08:03 3411615
  /lib/x86_64-linux-gnu/libpcre.so.3.12.1
7fd431b6f000-7fd431ba8000 r-xp 00000000 08:03 3411625
  /lib/x86_64-linux-gnu/libreadline.so.6.2
7fd431ba8000-7fd431da8000 ---p 00039000 08:03 3411625
  /lib/x86_64-linux-gnu/libreadline.so.6.2
7fd431da8000-7fd431daa000 r--p 00039000 08:03 3411625
  /lib/x86_64-linux-gnu/libreadline.so.6.2
7fd431daa000-7fd431db0000 rw-p 0003b000 08:03 3411625
  /lib/x86_64-linux-gnu/libreadline.so.6.2
7fd431db0000-7fd431db1000 rw-p 00000000 00:00 0
7fd431db1000-7fd431df3000 r-xp 00000000 08:03 3407910
  /lib/x86_64-linux-gnu/libdbus-1.so.3.5.8
7fd431df3000-7fd431ff3000 ---p 00042000 08:03 3407910
  /lib/x86_64-linux-gnu/libdbus-1.so.3.5.8
7fd431ff3000-7fd431ff4000 r--p 00042000 08:03 3407910
  /lib/x86_64-linux-gnu/libdbus-1.so.3.5.8
7fd431ff4000-7fd431ff5000 rw-p 00043000 08:03 3407910
  /lib/x86_64-linux-gnu/libdbus-1.so.3.5.8
7fd431ff5000-7fd431ff8000 r-xp 00000000 08:03 662026
  /usr/lib/x86_64-linux-gnu/libpulse-simple.so.0.0.3
7fd431ff8000-7fd4321f7000 ---p 00003000 08:03 662026
  /usr/lib/x86_64-linux-gnu/libpulse-simple.so.0.0.3
7fd4321f7000-7fd4321f8000 r--p 00002000 08:03 662026
  /usr/lib/x86_64-linux-gnu/libpulse-simple.so.0.0.3
7fd4321f8000-7fd4321f9000 rw-p 00003000 08:03 662026
  /usr/lib/x86_64-linux-gnu/libpulse-simple.so.0.0.3
7fd4321f9000-7fd43220c000 r-xp 00000000 08:03 656534
  /usr/lib/x86_64-linux-gnu/libjack.so.0.0.28
7fd43220c000-7fd43240b000 ---p 00013000 08:03 656534
  /usr/lib/x86_64-linux-gnu/libjack.so.0.0.28
7fd43240b000-7fd43240c000 r--p 00012000 08:03 656534
  /usr/lib/x86_64-linux-gnu/libjack.so.0.0.28
7fd43240c000-7fd43240d000 rw-p 00013000 08:03 656534
  /usr/lib/x86_64-linux-gnu/libjack.so.0.0.28
7fd43240d000-7fd432416000 rw-p 00000000 00:00 0
7fd432416000-7fd432508000 r-xp 00000000 08:03 3407908
  /lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.4
7fd432508000-7fd432708000 ---p 000f2000 08:03 3407908
  /lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.4
7fd432708000-7fd432709000 r--p 000f2000 08:03 3407908
  /lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.4
7fd432709000-7fd43270a000 rw-p 000f3000 08:03 3407908
  /lib/x86_64-linux-gnu/libglib-2.0.so.0.3200.4
7fd43270a000-7fd43270b000 rw-p 00000000 00:00 0
7fd43270b000-7fd43275f000 r-xp 00000000 08:03 671207
  /usr/lib/x86_64-linux-gnu/libfluidsynth.so.1.5.1
7fd43275f000-7fd43295f000 ---p 00054000 08:03 671207
  /usr/lib/x86_64-linux-gnu/libfluidsynth.so.1.5.1
7fd43295f000-7fd432960000 r--p 00054000 08:03 671207
  /usr/lib/x86_64-linux-gnu/libfluidsynth.so.1.5.1
7fd432960000-7fd432962000 rw-p 00055000 08:03 671207
  /usr/lib/x86_64-linux-gnu/libfluidsynth.so.1.5.1
7fd432962000-7fd4329d0000 rw-p 00000000 00:00 0
7fd4329d0000-7fd4329d2000 r-xp 00000000 08:03 802431
  /usr/lib/chuck/FluidSynth.chug
7fd4329d2000-7fd432bd1000 ---p 00002000 08:03 802431
  /usr/lib/chuck/FluidSynth.chug
7fd432bd1000-7fd432bd2000 r--p 00001000 08:03 802431
  /usr/lib/chuck/FluidSynth.chug
7fd432bd2000-7fd432bd3000 rw-p 00002000 08:03 802431
  /usr/lib/chuck/FluidSynth.chug
7fd432bd3000-7fd432bda000 r-xp 00000000 08:03 796739
  /usr/lib/chuck/Sigmund.chug
7fd432bda000-7fd432dd9000 ---p 00007000 08:03 796739
  /usr/lib/chuck/Sigmund.chug
7fd432dd9000-7fd432dda000 r--p 00006000 08:03 796739
  /usr/lib/chuck/Sigmund.chug
7fd432dda000-7fd432ddb000 rw-p 00007000 08:03 796739
  /usr/lib/chuck/Sigmund.chug
7fd432ddb000-7fd432de6000 r-xp 00000000 08:03 802429
  /usr/lib/chuck/Mesh2D.chug
7fd432de6000-7fd432fe5000 ---p 0000b000 08:03 802429
  /usr/lib/chuck/Mesh2D.chug
7fd432fe5000-7fd432fe6000 r--p 0000a000 08:03 802429
  /usr/lib/chuck/Mesh2D.chug
7fd432fe6000-7fd432fe7000 rw-p 0000b000 08:03 802429
  /usr/lib/chuck/Mesh2D.chug
7fd432fe7000-7fd432fe9000 r-xp 00000000 08:03 802426
  /usr/lib/chuck/PanN.chug
7fd432fe9000-7fd4331e9000 ---p 00002000 08:03 802426
  /usr/lib/chuck/PanN.chug
7fd4331e9000-7fd4331ea000 r--p 00002000 08:03 802426
  /usr/lib/chuck/PanN.chug
7fd4331ea000-7fd4331eb000 rw-p 00003000 08:03 802426
  /usr/lib/chuck/PanN.chug
7fd4331eb000-7fd4331ed000 r-xp 00000000 08:03 797714
  /usr/lib/chuck/ExpDelay.chug
7fd4331ed000-7fd4333ed000 ---p 00002000 08:03 797714
  /usr/lib/chuck/ExpDelay.chug
7fd4333ed000-7fd4333ee000 r--p 00002000 08:03 797714
  /usr/lib/chuck/ExpDelay.chug
7fd4333ee000-7fd4333ef000 rw-p 00003000 08:03 797714
  /usr/lib/chuck/ExpDelay.chug
7fd4333ef000-7fd4333f3000 r-xp 00000000 08:03 802427
  /usr/lib/chuck/PitchTrack.chug
7fd4333f3000-7fd4335f2000 ---p 00004000 08:03 802427
  /usr/lib/chuck/PitchTrack.chug
7fd4335f2000-7fd4335f3000 r--p 00003000 08:03 802427
  /usr/lib/chuck/PitchTrack.chug
7fd4335f3000-7fd4335f4000 rw-p 00004000 08:03 802427
  /usr/lib/chuck/PitchTrack.chug
7fd4335f4000-7fd4335f8000 r-xp 00000000 08:03 799399
  /usr/lib/chuck/Ladspa.chug
7fd4335f8000-7fd4337f7000 ---p 00004000 08:03 799399
  /usr/lib/chuck/Ladspa.chug
7fd4337f7000-7fd4337f8000 r--p 00003000 08:03 799399
  /usr/lib/chuck/Ladspa.chug
7fd4337f8000-7fd4337f9000 rw-p 00004000 08:03 799399
  /usr/lib/chuck/Ladspa.chug
7fd4337f9000-7fd4337fa000 r-xp 00000000 08:03 802424
  /usr/lib/chuck/MagicSine.chug
7fd4337fa000-7fd4339f9000 ---p 00001000 08:03 802424
  /usr/lib/chuck/MagicSine.chug
7fd4339f9000-7fd4339fa000 r--p 00000000 08:03 802424
  /usr/lib/chuck/MagicSine.chug
7fd4339fa000-7fd4339fb000 rw-p 00001000 08:03 802424
  /usr/lib/chuck/MagicSine.chug
7fd4339fb000-7fd4339fe000 r-xp 00000000 08:03 802421
  /usr/lib/chuck/ABSaturator.chug
7fd4339fe000-7fd433bfd000 ---p 00003000 08:03 802421
  /usr/lib/chuck/ABSaturator.chug
7fd433bfd000-7fd433bfe000 r--p 00002000 08:03 802421
  /usr/lib/chuck/ABSaturator.chug
7fd433bfe000-7fd433bff000 rw-p 00003000 08:03 802421
  /usr/lib/chuck/ABSaturator.chug
7fd433bff000-7fd433c00000 r-xp 00000000 08:03 802422
  /usr/lib/chuck/Bitcrusher.chug
7fd433c00000-7fd433e00000 ---p 00001000 08:03 802422
  /usr/lib/chuck/Bitcrusher.chug
7fd433e00000-7fd433e01000 r--p 00001000 08:03 802422
  /usr/lib/chuck/Bitcrusher.chug
7fd433e01000-7fd433e02000 rw-p 00002000 08:03 802422
  /usr/lib/chuck/Bitcrusher.chug
7fd433e02000-7fd433e05000 r-xp 00000000 08:03 802425
  /usr/lib/chuck/FIR.chug
7fd433e05000-7fd434004000 ---p 00003000 08:03 802425
  /usr/lib/chuck/FIR.chug
7fd434004000-7fd434005000 r--p 00002000 08:03 802425
  /usr/lib/chuck/FIR.chug
7fd434005000-7fd434006000 rw-p 00003000 08:03 802425
  /usr/lib/chuck/FIR.chug
7fd434006000-7fd43400b000 r-xp 00000000 08:03 802432
  /usr/lib/chuck/Elliptic.chug
7fd43400b000-7fd43420a000 ---p 00005000 08:03 802432
  /usr/lib/chuck/Elliptic.chug
7fd43420a000-7fd43420b000 r--p 00004000 08:03 802432
  /usr/lib/chuck/Elliptic.chug
7fd43420b000-7fd43420c000 rw-p 00005000 08:03 802432
  /usr/lib/chuck/Elliptic.chug
7fd43420c000-7fd43420d000 rw-p 00000000 00:00 0
7fd43420d000-7fd43420e000 ---p 00000000 00:00 0
7fd43420e000-7fd434a0e000 rw-p 00000000 00:00 0
7fd434a0e000-7fd434a14000 r-xp 00000000 08:03 663601
  /usr/lib/x86_64-linux-gnu/libogg.so.0.7.1
7fd434a14000-7fd434c13000 ---p 00006000 08:03 663601
  /usr/lib/x86_64-linux-gnu/libogg.so.0.7.1
7fd434c13000-7fd434c14000 r--p 00005000 08:03 663601
  /usr/lib/x86_64-linux-gnu/libogg.so.0.7.1
7fd434c14000-7fd434c15000 rw-p 00006000 08:03 663601
  /usr/lib/x86_64-linux-gnu/libogg.so.0.7.1
7fd434c15000-7fd434c40000 r-xp 00000000 08:03 663780
  /usr/lib/x86_64-linux-gnu/libvorbis.so.0.4.5
7fd434c40000-7fd434e3f000 ---p 0002b000 08:03 663780
  /usr/lib/x86_64-linux-gnu/libvorbis.so.0.4.5
7fd434e3f000-7fd434e40000 r--p 0002a000 08:03 663780
  /usr/lib/x86_64-linux-gnu/libvorbis.so.0.4.5
7fd434e40000-7fd434e41000 rw-p 0002b000 08:03 663780
  /usr/lib/x86_64-linux-gnu/libvorbis.so.0.4.5
7fd434e41000-7fd4350f4000 r-xp 00000000 08:03 663782
  /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2.0.8
7fd4350f4000-7fd4352f3000 ---p 002b3000 08:03 663782
  /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2.0.8
7fd4352f3000-7fd43530f000 r--p 002b2000 08:03 663782
  /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2.0.8
7fd43530f000-7fd435310000 rw-p 002ce000 08:03 663782
  /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2.0.8
7fd435310000-7fd435358000 r-xp 00000000 08:03 663073
  /usr/lib/x86_64-linux-gnu/libFLAC.so.8.2.0
7fd435358000-7fd435558000 ---p 00048000 08:03 663073
  /usr/lib/x86_64-linux-gnu/libFLAC.so.8.2.0Aborted (core dumped)

I suppose we should move this to an issue on github at some point. . .

   michael


On Mon, Jun 23, 2014 at 9:17 PM, Ryan Supak <ryansupak at gmail.com> wrote:
> Yuck, it behaves badly on Mac, but even worse on RPi. I get to maybe 30
> shreds before it tanks... rs
>
>
> On Mon, Jun 23, 2014 at 5:33 PM, Michael Heuer <heuermh at gmail.com> wrote:
>>
>> Oops, forgot to increment count
>>
>>   <<<"count", count++>>>;
>>
>> ...
>>
>> $ chuck --silent examples/dmxBug.ck
>> [chuck](VM): removing shred: 2 (spork~exp)...
>> count 0
>> [chuck](VM): removing shred: 3 (spork~exp)...
>> count 1
>> ...
>> [chuck](VM): removing shred: 144 (spork~exp)...
>> count 142
>> [chuck](VM): removing shred: 145 (spork~exp)...
>> count 143
>> [chuck](VM): removing shred: 146 (spork~exp)...
>> Segmentation fault: 11
>>
>>
>> On Mon, Jun 23, 2014 at 5:31 PM, Michael Heuer <heuermh at gmail.com> wrote:
>> > Interesting find, even this simple example blows for me
>> >
>> > dmxBug.ck:
>> >
>> > fun void blink()
>> > {
>> >   while (true)
>> >   {
>> >     50::ms => now;
>> >   }
>> > }
>> >
>> > Shred shred;
>> > spork ~ blink() @=> shred;
>> >
>> > 0 => int count;
>> >
>> > while (true)
>> > {
>> >   200::ms => now;
>> >   shred.id() => Machine.remove;
>> >   spork ~ blink() @=> shred;
>> >   <<<"count", count>>>;
>> > }
>> >
>> > $ chuck --silent examples/dmxBug.ck
>> > ...
>> > [chuck](VM): removing shred: 144 (spork~exp)...
>> > count 0
>> > [chuck](VM): removing shred: 145 (spork~exp)...
>> > count 0
>> > [chuck](VM): removing shred: 146 (spork~exp)...
>> > Segmentation fault: 11
>> >
>> >    michael
>> >
>> >
>> > On Mon, Jun 23, 2014 at 5:17 PM, Ryan Supak <ryansupak at gmail.com> wrote:
>> >> Update: I eliminated everything I could from the Shreds that were being
>> >> Sporked, and I still get the exact same error (at exactly 147 Shreds.)
>> >>
>> >> Here is what I shortened the Shreds to:
>> >>
>> >> fun void Blink()
>> >> {
>> >>     while( true )
>> >>     {
>> >>         50::ms => now;
>> >>     }
>> >> }
>> >>
>> >> fun void LFOMod()
>> >> {
>> >>     while( true )
>> >>     {
>> >>         50::ms => now;
>> >>     }
>> >> }
>> >>
>> >>
>> >> On Mon, Jun 23, 2014 at 4:22 PM, Ryan Supak <ryansupak at gmail.com>
>> >> wrote:
>> >>>
>> >>> Thanks for the thorough reply. I'm doing one safer, even than "voice
>> >>> stealing": each Spork is, at most, reconfiguring a single global
>> >>> oscillator.
>> >>>
>> >>> Attached is the entire source. Lines 128-142 contain initialization
>> >>> code
>> >>> that creates a Shred to make an LED blink by sending a MIDI message
>> >>> within a
>> >>> time loop, and another Shred that sets the frequency of an LFO, polls
>> >>> it
>> >>> every ten milliseconds, and sends some Serial output based on the LFO
>> >>> position.
>> >>>
>> >>> Anytime that the parameters controlling the blinking rate and the LFO
>> >>> rate/phase have occasion to change (when MIDI events come in to change
>> >>> them), the "old" Shreds are Machine.Remove'd and they're recreated
>> >>> immediately following. You can see this at lines 343 and 589.
>> >>>
>> >>> Notice that the LFOMod function and the Blink function aren't creating
>> >>> anything new (with the exception of local arguments being
>> >>> instantiated), but
>> >>> if you think those local arguments could be causing my problem I'll
>> >>> eliminate them too.
>> >>>
>> >>> Please see the attached.
>> >>> rs
>> >>>
>> >>>
>> >>> On Mon, Jun 23, 2014 at 11:59 AM, Perry R Cook <prc at cs.princeton.edu>
>> >>> wrote:
>> >>>>
>> >>>> I have lots of programs that spork hundreds or thousands
>> >>>> of shreds without this error.  So, without seeing your
>> >>>> code, my guesses (and questions) are as follows:
>> >>>>
>> >>>> Are you running this on a small memory architecture? Since
>> >>>> you say headless, I'm guessing maybe Raspberry Pi?  It
>> >>>> could be that you're running out of memory, so see next
>> >>>> question.
>> >>>>
>> >>>> Does the shred that you're sporking declare new UGs or
>> >>>> require memory to be allocated (arrays, lots of string
>> >>>> manipulation, etc.)?  In general, this is a bad idea if you
>> >>>> can avoid it.  ChucK does no garbage collection, which
>> >>>> means that you need to be cautious about declaring memory.
>> >>>>
>> >>>> So even a shred as simple as:
>> >>>>
>> >>>> fun void mySine()  {
>> >>>>     SinOsc s => dac;
>> >>>>     Math.random2f(100,1000) => s.freq;
>> >>>>     second => now;
>> >>>>     s =< dac;
>> >>>> }
>> >>>>
>> >>>> will eat up memory, because even though the SinOsc
>> >>>> is unchucked and never computes again, the memory
>> >>>> for that structure is still around.  We want, someday
>> >>>> to make ChucK a proper garbage collecting language,
>> >>>> but it's hard, especially for real-time systems.
>> >>>>
>> >>>> If this turns out to be your issue, then one way to
>> >>>> handle this is to make a global pool of fixed
>> >>>> resources and have your shred grab from that.
>> >>>> Like classic "round robin voice stealing" in
>> >>>> synthesizers:
>> >>>>
>> >>>> SinOsc s[100];
>> >>>> 0 => int next2Use;
>> >>>>
>> >>>> fun void mySine() {
>> >>>>     next2Use => int thisOne;
>> >>>>     1 +=> next2Use;
>> >>>>     if (next2Use > 99) 0 => next2Use;
>> >>>>     s[thisOne] => dac;
>> >>>>     Math.random2f(100,1000) => s[thisOne].freq;
>> >>>>     second => now;
>> >>>>     s[thisOne] =< dac;
>> >>>> }
>> >>>>
>> >>>> // to test:
>> >>>> while (1) {
>> >>>>     Math.random2f(0.01,0.1) :: second => now;
>> >>>>     spork ~ mySine();
>> >>>> }
>> >>>>
>> >>>> I just fired up a few dozen of these running in
>> >>>> parallel, VM showed 2600 total shreds running,
>> >>>> no problem (and no clicks or dropouts!!).
>> >>>>
>> >>>> Hope this helps, if none of this applies, then you
>> >>>> may have discovered a strange bug.  Source code please,
>> >>>> and we can all scratch our heads on it.
>> >>>>
>> >>>>  Thanx!!  PRC
>> >>>>
>> >>>>
>> >>>> Today's Topics:
>> >>>>
>> >>>>    1. 147th shred removed...segmentation fault? (Ryan Supak)
>> >>>> _______________________________________________
>> >>>> chuck-users mailing list
>> >>>> chuck-users at lists.cs.princeton.edu
>> >>>> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>> >>>
>> >>>
>> >>
>> >>
>> >> _______________________________________________
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