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Moarvm segfaults or produces variuos errors while iterating through $list.race #5360

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p6rt opened this issue Jun 5, 2016 · 4 comments
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SEGV Segmentation fault, bus error, etc.

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@p6rt
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p6rt commented Jun 5, 2016

Migrated from rt.perl.org#128325 (status was 'new')

Searchable as RT128325$

@p6rt
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p6rt commented Jun 5, 2016

From ivan.oleynikov95@gmail.com

$ perl6 -v
This is Rakudo version 2016.04 built on MoarVM version 2016.04
implementing Perl 6.c.

I got segfault(see core in attachments) and various errors while running the attached script `a.pl`.

The interesting thing is that it runs successfully if you replace $exploits by @​exploits.

Error examples​:

$ perl6 a.pl
targets are a b c d e
Segmentation fault

$ perl6 a.pl
targets are a b c d e
This Seq has already been iterated, and its values consumed
(you might solve this by adding .cache on usages of the Seq, or
by assigning the Seq into an array)
  in block at a.pl line 20

$ perl6 a.pl
targets are a b c d e
Cannot invoke this object (REPR​: Uninstantiable)
  in block at a.pl line 20

$ perl6 a.pl
targets are a b c d e
*** Error in `/home/gnull/prefix/bin/moar'​: double free or corruption (!prev)​: 0x0acfa690 ***
======= Backtrace​: =========
/lib/i386-linux-gnu/libc.so.6(+0x756fb)[0xb72c96fb]
/lib/i386-linux-gnu/libc.so.6(+0x76440)[0xb72ca440]
/lib/i386-linux-gnu/libc.so.6(closedir+0x28)[0xb72f41f8]
/home/gnull/prefix/lib/libmoar.so(MVM_dir_close+0x41)[0xb74b9321]
/home/gnull/prefix/lib/libmoar.so(MVM_interp_run+0xa9d4)[0xb747e6a4]
/home/gnull/prefix/lib/libmoar.so(+0xac0d2)[0xb74980d2]
/home/gnull/prefix/lib/libmoar.so(+0x17e6f0)[0xb756a6f0]
/lib/i386-linux-gnu/libpthread.so.0(+0x6a0d)[0xb71fda0d]
/lib/i386-linux-gnu/libc.so.6(clone+0x5e)[0xb732dece]
======= Memory map​: ========
08048000-0804a000 r-xp 00000000 08​:01 1570448 /home/gnull/prefix/bin/moar
0804a000-0804b000 rw-p 00001000 08​:01 1570448 /home/gnull/prefix/bin/moar
0837a000-0b3b7000 rw-p 00000000 00​:00 0 [heap]
b3b00000-b3b59000 rw-p 00000000 00​:00 0
b3b59000-b3c00000 ---p 00000000 00​:00 0
b3d00000-b3d30000 rw-p 00000000 00​:00 0
b3d30000-b3e00000 ---p 00000000 00​:00 0
b3e0f000-b3e2b000 r-xp 00000000 08​:01 392452 /lib/i386-linux-gnu/libgcc_s.so.1
b3e2b000-b3e2c000 rw-p 0001b000 08​:01 392452 /lib/i386-linux-gnu/libgcc_s.so.1
b3e50000-b3e51000 ---p 00000000 00​:00 0
b3e51000-b4650000 rwxp 00000000 00​:00 0
b4650000-b4a51000 rw-p 00000000 00​:00 0
b4a51000-b4a52000 ---p 00000000 00​:00 0
b4a52000-b5251000 rwxp 00000000 00​:00 0
b5251000-b5a53000 rw-p 00000000 00​:00 0
b5a53000-b5a5b000 r--p 00000000 08​:01 1851304 /home/gnull/.perl6/precomp/D7820A4EF6D97B780F45CAC4B50C4E6E59589690.1463953130.12322/9B/9B467EEF9267A777BB53BAA2F19BE2C9D756BEED
b5a5b000-b5a69000 r--p 00000000 08​:01 1851114 /home/gnull/.perl6/precomp/D7820A4EF6D97B780F45CAC4B50C4E6E59589690.1463953130.12322/7C/7C734D5DD25632F40E0515854A6BDC15230CCBEF
b5a69000-b5aff000 rw-p 00000000 00​:00 0
b5aff000-b5b49000 r--p 00000000 08​:01 1850843 /home/gnull/prefix/share/nqp/lib/Perl6/Metamodel.moarvm
b5b49000-b5b77000 r--p 00000000 08​:01 1850844 /home/gnull/prefix/share/nqp/lib/Perl6/BOOTSTRAP.moarvm
b5b77000-b5b98000 rw-p 00000000 00​:00 0
b5b98000-b6683000 r--p 00000000 08​:01 1850845 /home/gnull/prefix/share/perl6/runtime/CORE.setting.moarvm
b6683000-b6689000 r-xp 00000000 08​:01 1850849 /home/gnull/prefix/share/perl6/runtime/dynext/libperl6_ops_moar.so
b6689000-b668a000 rw-p 00005000 08​:01 1850849 /home/gnull/prefix/share/perl6/runtime/dynext/libperl6_ops_moar.so
b668a000-b66b1000 r--p 00000000 08​:01 1850840 /home/gnull/prefix/share/nqp/lib/Perl6/Optimizer.moarvm
b66b1000-b66b7000 r--p 00000000 08​:01 1850842 /home/gnull/prefix/share/nqp/lib/Perl6/Compiler.moarvm
b66b7000-b66f9000 rw-p 00000000 00​:00 0
b66f9000-b66fe000 r--p 00000000 08​:01 1847671 /home/gnull/prefix/share/nqp/lib/Perl6/ModuleLoader.moarvm
b66fe000-b6748000 r--p 00000000 08​:01 1847749 /home/gnull/prefix/share/nqp/lib/Perl6/World.moarvm
b6748000-b6758000 r--p 00000000 08​:01 1850838 /home/gnull/prefix/share/nqp/lib/Perl6/Ops.moarvm
b6758000-b676b000 r--p 00000000 08​:01 1850841 /home/gnull/prefix/share/nqp/lib/Perl6/Pod.moarvm
b676b000-b684f000 r--p 00000000 08​:01 1850839 /home/gnull/prefix/share/nqp/lib/Perl6/Actions.moarvm
b684f000-b688a000 r--p 00000000 08​:01 1850834 /home/gnull/prefix/share/nqp/lib/NQPP5QRegex.moarvm
b688a000-b6c3c000 r--p 00000000 08​:01 1850837 /home/gnull/prefix/share/nqp/lib/Perl6/Grammar.moarvm
b6c3c000-b6c57000 r--p 00000000 08​:01 1850829 /home/gnull/prefix/share/nqp/lib/MASTOps.moarvm
b6c57000-b6c64000 r--p 00000000 08​:01 1850830 /home/gnull/prefix/share/nqp/lib/MASTNodes.moarvm
b6c64000-b6cd8000 r--p 00000000 08​:01 1850831 /home/gnull/prefix/share/nqp/lib/QAST.moarvm
b6cd8000-b6d30000 r--p 00000000 08​:01 1850828 /home/gnull/prefix/share/nqp/lib/NQPHLL.moarvm
b6d30000-b6d49000 r--p 00000000 08​:01 1850826 /home/gnull/prefix/share/nqp/lib/QASTNode.moarvm
b6d49000-b6d6e000 r--p 00000000 08​:01 1850827 /home/gnull/prefix/share/nqp/lib/QRegex.moarvm
b6d6e000-b6dd2000 r--p 00000000 08​:01 1850832 /home/gnull/prefix/share/nqp/lib/NQPP6QRegex.moarvm
b6dd2000-b6de6000 r--p 00000000 08​:01 1850823 /home/gnull/prefix/share/nqp/lib/nqpmo.moarvm
b6de6000-b71e9000 rw-p 00000000 00​:00 0
b71e9000-b71ec000 r-xp 00000000 08​:01 395688 /lib/i386-linux-gnu/libdl-2.17.so
b71ec000-b71ed000 r--p 00002000 08​:01 395688 /lib/i386-linux-gnu/libdl-2.17.so
b71ed000-b71ee000 rw-p 00003000 08​:01 395688 /lib/i386-linux-gnu/libdl-2.17.so
b71ee000-b71f5000 r-xp 00000000 08​:01 395703 /lib/i386-linux-gnu/librt-2.17.so
b71f5000-b71f6000 r--p 00006000 08​:01 395703 /lib/i386-linux-gnu/librt-2.17.so
b71f6000-b71f7000 rw-p 00007000 08​:01 395703 /lib/i386-linux-gnu/librt-2.17.so
b71f7000-b720d000 r-xp 00000000 08​:01 395645 /lib/i386-linux-gnu/libpthread-2.17.so
b720d000-b720e000 r--p 00015000 08​:01 395645 /lib/i386-linux-gnu/libpthread-2.17.so
b720e000-b720f000 rw-p 00016000 08​:01 395645 /lib/i386-linux-gnu/libpthread-2.17.so
b720f000-b7211000 rw-p 00000000 00​:00 0
b7211000-b7251000 r-xp 00000000 08​:01 395689 /lib/i386-linux-gnu/libm-2.17.so
b7251000-b7252000 r--p 0003f000 08​:01 395689 /lib/i386-linux-gnu/libm-2.17.so
b7252000-b7253000 rw-p 00040000 08​:01 395689 /lib/i386-linux-gnu/libm-2.17.so
b7253000-b7254000 rw-p 00000000 00​:00 0
b7254000-b73c2000 r-xp 00000000 08​:01 395685 /lib/i386-linux-gnu/libc-2.17.so
b73c2000-b73c4000 r--p 0016e000 08​:01 395685 /lib/i386-linux-gnu/libc-2.17.so
b73c4000-b73c5000 rw-p 00170000 08​:01 395685 /lib/i386-linux-gnu/libc-2.17.so
b73c5000-b73c8000 rw-p 00000000 00​:00 0
b73d2000-b73d3000 rw-p 00000000 00​:00 0
b73d3000-b73da000 r--p 00000000 08​:01 1851112 /home/gnull/.perl6/precomp/D7820A4EF6D97B780F45CAC4B50C4E6E59589690.1463953130.12322/E7/E796CB0CB7DEAEAFA56E8558AD18241417AC328A
b73da000-b73e6000 r--p 00000000 08​:01 1850825 /home/gnull/prefix/share/nqp/lib/NQPCORE.setting.moarvm
b73e6000-b73e9000 r--p 00000000 08​:01 1850824 /home/gnull/prefix/share/nqp/lib/ModuleLoader.moarvm
b73e9000-b73ec000 r--p 00000000 08​:01 1850847 /home/gnull/prefix/share/perl6/runtime/perl6.moarvm
b73ec000-b76e2000 r-xp 00000000 08​:01 1570465 /home/gnull/prefix/lib/libmoar.so
b76e2000-b773a000 rw-p 002f6000 08​:01 1570465 /home/gnull/prefix/lib/libmoar.so
b773a000-b773d000 rw-p 00000000 00​:00 0
b773d000-b773e000 r-xp 00000000 00​:00 0 [vdso]
b773e000-b775d000 r-xp 00000000 08​:01 395681 /lib/i386-linux-gnu/ld-2.17.so
b775d000-b775e000 r--p 0001f000 08​:01 395681 /lib/i386-linux-gnu/ld-2.17.so
b775e000-b775f000 rw-p 00020000 08​:01 395681 /lib/i386-linux-gnu/ld-2.17.so
bfb11000-bfb31000 rwxp 00000000 00​:00 0 [stack]
bfb31000-bfb32000 rw-p 00000000 00​:00 0

@p6rt
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p6rt commented Jun 5, 2016

From ivan.oleynikov95@gmail.com

a.pl

@p6rt
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p6rt commented Jun 5, 2016

From ivan.oleynikov95@gmail.com

core.gz

@p6rt
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p6rt commented Jun 5, 2016

From The RT System itself

Sending the previous mail has failed. Please contact your admin, they can find more details in the logs.

@p6rt p6rt added the SEGV Segmentation fault, bus error, etc. label Jan 5, 2020
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