glibc detected *** /usr/bin/perl: corrupted double-linked list (was 5.10, is now 5.16.2)

[p5pRT]

Migrated from rt.perl.org#78728 (status was 'resolved')

Searchable as RT78728$

[p5pRT]

From lawalsh@tlinx.org

Created by lawalsh@tlinx.org

Running a long HTML parse program -- about 1665 lines long that is in
primary development. If I could figure out how to add an attachment, I
could attach one here. It processes a local data file though it can try to
download files as guest from a website. I don't believe it actually
downloads any files before crashing.

It is sensitive to the input file -- since running it twice in a row doesn't
create the coredump. I have to 'restore' my input file to freshly
downloaded file, (i.e. my perl program modifies the data file, thus a 2nd
run doesn't follow the same execution as the first).

I also have a core (6.6M uncompressed) file to add somewhere, compressed​:
7z​:860K, gz​:1.3M, bz2​:1.1M).

Traceback, will include here​:

*** glibc detected *** /usr/bin/perl: corrupted double-linked list: 0x0000000001bfeab0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x73226)[0x7f00c7628226]
/lib64/libc.so.6(+0x75cb0)[0x7f00c762acb0]
/lib64/libc.so.6(__libc_malloc+0x79)[0x7f00c762caa9]
/usr/bin/perl(Perl_safesysmalloc+0x4d)[0x45ca0d]
/usr/bin/perl(Perl_sv_grow+0xf8)[0x496208]
/usr/bin/perl(Perl_sv_setpvn+0x18c)[0x4996ac]
/usr/bin/perl(Perl_newSVpvn+0x56)[0x4998d6]
/usr/bin/perl[0x45daab]
/usr/bin/perl[0x45b4f2]
/usr/bin/perl(Perl_vcroak+0x1e)[0x45b64e]
/usr/bin/perl(Perl_safesysmalloc+0x0)[0x45c9c0]
/usr/bin/perl(Perl_sv_unref_flags+0x19b)[0x49348b]
/usr/bin/perl(Perl_sv_chop+0x227)[0x498b47]
/usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/HTML/Parser/Parser.so(+0xc0bb)[0x7f00c432c0bb]
/usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/HTML/Parser/Parser.so(XS_HTML__Parser_parse+0x113)[0x7f00c432c873]
/usr/bin/perl(Perl_pp_entersub+0x5ba)[0x47ca4a]
/usr/bin/perl(Perl_runops_debug+0x134)[0x454c84]
/usr/bin/perl(perl_run+0x454)[0x478c74]
/usr/bin/perl(main+0xdc)[0x42176c]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f00c75d3b7d]
/usr/bin/perl[0x4215c9]
======= Memory map: ========
00400000-00586000 r-xp 00000000 08:26 39250758 /usr/bin/perl
00785000-00786000 r--p 00185000 08:26 39250758 /usr/bin/perl
00786000-0078a000 rw-p 00186000 08:26 39250758 /usr/bin/perl
01702000-01cc0000 rw-p 00000000 00:00 0 [heap]
7f00c0000000-7f00c0021000 rw-p 00000000 00:00 0
7f00c0021000-7f00c4000000 ---p 00000000 00:00 0
7f00c4109000-7f00c411f000 r-xp 00000000 08:21 40262764 /lib64/libgcc_s.so.1
7f00c411f000-7f00c431e000 ---p 00016000 08:21 40262764 /lib64/libgcc_s.so.1
7f00c431e000-7f00c431f000 r--p 00015000 08:21 40262764 /lib64/libgcc_s.so.1
7f00c431f000-7f00c4320000 rw-p 00016000 08:21 40262764 /lib64/libgcc_s.so.1
7f00c4320000-7f00c4331000 r-xp 00000000 08:26 17264503 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/HTML/Parser/Parser.so
7f00c4331000-7f00c4531000 ---p 00011000 08:26 17264503 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/HTML/Parser/Parser.so
7f00c4531000-7f00c4532000 r--p 00011000 08:26 17264503 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/HTML/Parser/Parser.so
7f00c4532000-7f00c4533000 rw-p 00012000 08:26 17264503 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/HTML/Parser/Parser.so
7f00c4533000-7f00c4542000 r-xp 00000000 08:26 37965018 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/Data/Alias/Alias.so
7f00c4542000-7f00c4741000 ---p 0000f000 08:26 37965018 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/Data/Alias/Alias.so
7f00c4741000-7f00c4742000 r--p 0000e000 08:26 37965018 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/Data/Alias/Alias.so
7f00c4742000-7f00c4743000 rw-p 0000f000 08:26 37965018 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/Data/Alias/Alias.so
7f00c4743000-7f00c4752000 r-xp 00000000 08:26 16935572 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Encode/Encode.so
7f00c4752000-7f00c4952000 ---p 0000f000 08:26 16935572 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Encode/Encode.so
7f00c4952000-7f00c4953000 r--p 0000f000 08:26 16935572 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Encode/Encode.so
7f00c4953000-7f00c4954000 rw-p 00010000 08:26 16935572 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Encode/Encode.so
7f00c4954000-7f00c495e000 r-xp 00000000 08:26 51662457 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/PerlIO/encoding/encoding.so
7f00c495e000-7f00c4b5d000 ---p 0000a000 08:26 51662457 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/PerlIO/encoding/encoding.so
7f00c4b5d000-7f00c4b5e000 r--p 00009000 08:26 51662457 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/PerlIO/encoding/encoding.so
7f00c4b5e000-7f00c4b5f000 rw-p 0000a000 08:26 51662457 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/PerlIO/encoding/encoding.so
7f00c4b5f000-7f00c4b6d000 r-xp 00000000 08:26 42444098 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Data/Dumper/Dumper.so
7f00c4b6d000-7f00c4d6c000 ---p 0000e000 08:26 42444098 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Data/Dumper/Dumper.so
7f00c4d6c000-7f00c4d6d000 r--p 0000d000 08:26 42444098 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Data/Dumper/Dumper.so
7f00c4d6d000-7f00c4d6e000 rw-p 0000e000 08:26 42444098 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Data/Dumper/Dumper.so
7f00c4d6e000-7f00c4d70000 r-xp 00000000 08:21 40262792 /lib64/libkeyutils-1.2.so
7f00c4d70000-7f00c4f6f000 ---p 00002000 08:21 40262792 /lib64/libkeyutils-1.2.so
7f00c4f6f000-7f00c4f70000 r--p 00001000 08:21 40262792 /lib64/libkeyutils-1.2.so
7f00c4f70000-7f00c4f71000 rw-p 00002000 08:21 40262792 /lib64/libkeyutils-1.2.so
7f00c4f71000-7f00c4f78000 r-xp 00000000 08:26 34083387 /usr/lib64/libkrb5support.so.0.1
7f00c4f78000-7f00c5178000 ---p 00007000 08:26 34083387 /usr/lib64/libkrb5support.so.0.1
7f00c5178000-7f00c5179000 r--p 00007000 08:26 34083387 /usr/lib64/libkrb5support.so.0.1
7f00c5179000-7f00c517a000 rw-p 00008000 08:26 34083387 /usr/lib64/libkrb5support.so.0.1
7f00c517a000-7f00c517d000 r-xp 00000000 08:21 34091016 /lib64/libcom_err.so.2.1
7f00c517d000-7f00c537c000 ---p 00003000 08:21 34091016 /lib64/libcom_err.so.2.1
7f00c537c000-7f00c537d000 r--p 00002000 08:21 34091016 /lib64/libcom_err.so.2.1
7f00c537d000-7f00c537e000 rw-p 00003000 08:21 34091016 /lib64/libcom_err.so.2.1
7f00c537e000-7f00c53a8000 r-xp 00000000 08:26 34083378 /usr/lib64/libk5crypto.so.3.1
7f00c53a8000-7f00c55a7000 ---p 0002a000 08:26 34083378 /usr/lib64/libk5crypto.so.3.1
7f00c55a7000-7f00c55a9000 r--p 00029000 08:26 34083378 /usr/lib64/libk5crypto.so.3.1
7f00c55a9000-7f00c55aa000 rw-p 0002b000 08:26 34083378 /usr/lib64/libk5crypto.so.3.1
7f00c55aa000-7f00c565c000 r-xp 00000000 08:26 34083385 /usr/lib64/libkrb5.so.3.3
7f00c565c000-7f00c585c000 ---p 000b2000 08:26 34083385 /usr/lib64/libkrb5.so.3.3
7f00c585c000-7f00c5864000 r--p 000b2000 08:26 34083385 /usr/lib64/libkrb5.so.3.3
7f00c5864000-7f00c5866000 rw-p 000ba000 08:26 34083385 /usr/lib64/libkrb5.so.3.3
7f00c5866000-7f00c587f000 r-xp 00000000 08:26 35096507 /usr/lib64/libsasl2.so.2.0.23
7f00c587f000-7f00c5a7e000 ---p 00019000 08:26 35096507 /usr/lib64/libsasl2.so.2.0.23
7f00c5a7e000-7f00c5a7f000 r--p 00018000 08:26 35096507 /usr/lib64/libsasl2.so.2.0.23
7f00c5a7f000-7f00c5a80000 rw-p 00019000 08:26 35096507 /usr/lib64/libsasl2.so.2.0.23
7f00c5a80000-7f00c5a93000 r-xp 00000000 08:21 34193288 /lib64/libresolv-2.11.2.so
7f00c5a93000-7f00c5c93000 ---p 00013000 08:21 34193288 /lib64/libresolv-2.11.2.so
7f00c5c93000-7f00c5c94000 r--p 00013000 08:21 34193288 /lib64/libresolv-2.11.2.so
7f00c5c94000-7f00c5c95000 rw-p 00014000 08:21 34193288 /lib64/libresolv-2.11.2.so
7f00c5c95000-7f00c5c97000 rw-p 00000000 00:00 0
7f00c5c97000-7f00c5ca6000 r-xp 00000000 08:26 35176476 /usr/lib64/liblber-2.4.so.2.5.0
7f00c5ca6000-7f00c5ea5000 ---p 0000f000 08:26 35176476 /usr/lib64/liblber-2.4.so.2.5.0
7f00c5ea5000-7f00c5ea6000 r--p 0000e000 08:26 35176476 /usr/lib64/liblber-2.4.so.2.5.0
7f00c5ea6000-7f00c5ea7000 rw-p 0000f000 08:26 35176476 /usr/lib64/liblber-2.4.so.2.5.0
7f00c5ea7000-7f00c5ebb000 r-xp 00000000 08:21 40262768 /lib64/libz.so.1.2.3
7f00c5ebb000-7f00c60bb000 ---p 00014000 08:21 40262768 /lib64/libz.so.1.2.3
7f00c60bb000-7f00c60bc000 r--p 00014000 08:21 40262768 /lib64/libz.so.1.2.3
7f00c60bc000-7f00c60bd000 rw-p 00015000 08:21 40262768 /lib64/libz.so.1.2.3
7f00c60bd000-7f00c60ea000 r-xp 00000000 08:26 34083412 /usr/lib64/libgssapi_krb5.so.2.2
7f00c60ea000-7f00c62ea000 ---p 0002d000 08:26 34083412 /usr/lib64/libgssapi_krb5.so.2.2
7f00c62ea000-7f00c62eb000 r--p 0002d000 08:26 34083412 /usr/lib64/libgssapi_krb5.so.2.2
7f00c62eb000-7f00c62ec000 rw-p 0002e000 08:26 34083412 /usr/lib64/libgssapi_krb5.so.2.2
7f00c62ec000-7f00c632f000 r-xp 00000000 08:26 35175050 /usr/lib64/libldap-2.4.so.2.5.0
7f00c632f000-7f00c652e000 ---p 00043000 08:26 35175050 /usr/lib64/libldap-2.4.so.2.5.0
7f00c652e000-7f00c652f000 r--p 00042000 08:26 35175050 /usr/lib64/libldap-2.4.so.2.5.0
7f00c652f000-7f00c6531000 rw-p 00043000 08:26 35175050 /usr/lib64/libldap-2.4.so.2.5.0
7f00c6531000-7f00c6694000 r-xp 00000000 08:26 34433043 /usr/lib64/libcrypto.so.0.9.8
7f00c6694000-7f00c6893000 ---p 00163000 08:26 34433043 /usr/lib64/libcrypto.so.0.9.8
7f00c6893000-7f00c68a1000 r--p 00162000 08:26 34433043 /usr/lib64/libcrypto.so.0.9.8
7f00c68a1000-7f00c68b9000 rw-p 00170000 08:26 34433043 /usr/lib64/libcrypto.so.0.9.8
7f00c68b9000-7f00c68bd000 rw-p 00000000 00:00 0
7f00c68bd000-7f00c6908000 r-xp 00000000 08:26 34433046 /usr/lib64/libssl.so.0.9.8
7f00c6908000-7f00c6b07000 ---p 0004b000 08:26 34433046 /usr/lib64/libssl.so.0.9.8
7f00c6b07000-7f00c6b09000 r--p 0004a000 08:26 34433046 /usr/lib64/libssl.so.0.9.8
7f00c6b09000-7f00c6b0f000 rw-p 0004c000 08:26 34433046 /usr/lib64/libssl.so.0.9.8
7f00c6b0f000-7f00c6b40000 r-xp 00000000 08:26 35175710 /usr/lib64/libidn.so.11.5.39
7f00c6b40000-7f00c6d40000 ---p 00031000 08:26 35175710 /usr/lib64/libidn.so.11.5.39
7f00c6d40000-7f00c6d41000 r--p 00031000 08:26 35175710 /usr/lib64/libidn.so.11.5.39
7f00c6d41000-7f00c6d42000 rw-p 00032000 08:26 35175710 /usr/lib64/libidn.so.11.5.39
7f00c6d42000-7f00c6d87000 r-xp 00000000 08:26 35174303 /usr/lib64/libcurl.so.4.1.1
7f00c6d87000-7f00c6f87000 ---p 00045000 08:26 35174303 /usr/lib64/libcurl.so.4.1.1
7f00c6f87000-7f00c6f88000 r--p 00045000 08:26 35174303 /usr/lib64/libcurl.so.4.1.1
7f00c6f88000-7f00c6f89000 rw-p 00046000 08:26 35174303 /usr/lib64/libcurl.so.4.1.1
7f00c6f89000-7f00c6fa2000 r-xp 00000000 08:26 7889672 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/WWW/Curl/Curl.so
7f00c6fa2000-7f00c71a1000 ---p 00019000 08:26 7889672 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/WWW/Curl/Curl.so
7f00c71a1000-7f00c71a2000 r--p 00018000 08:26 7889672 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/WWW/Curl/Curl.so
7f00c71a2000-7f00c71a3000 rw-p 00019000 08:26 7889672 /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/WWW/Curl/Curl.so
7f00c71a3000-7f00c71ab000 r-xp 00000000 08:21 34193290 /lib64/librt-2.11.2.so
7f00c71ab000-7f00c73aa000 ---p 00008000 08:21 34193290 /lib64/librt-2.11.2.so
7f00c73aa000-7f00c73ab000 r--p 00007000 08:21 34193290 /lib64/librt-2.11.2.so
7f00c73ab000-7f00c73ac000 rw-p 00008000 08:21 34193290 /lib64/librt-2.11.2.so
7f00c73ac000-7f00c73b4000 r-xp 00000000 08:26 29997 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Time/HiRes/HiRes.so
7f00c73b4000-7f00c75b3000 ---p 00008000 08:26 29997 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Time/HiRes/HiRes.so
7f00c75b3000-7f00c75b4000 r--p 00007000 08:26 29997 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Time/HiRes/HiRes.so
7f00c75b4000-7f00c75b5000 rw-p 00008000 08:26 29997 /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Time/HiRes/HiRes.so
7f00c75b5000-7f00c770b000 r-xp 00000000 08:21 34085926 /lib64/libc-2.11.2.so
7f00c770b000-7f00c790b000 ---p 00156000 08:21 34085926 /lib64/libc-2.11.2.so
7f00c790b000-7f00c790f000 r--p 00156000 08:21 34085926 /lib64/libc-2.11.2.so
7f00c790f000-7f00c7910000 rw-p 0015a000 08:21 34085926 /lib64/libc-2.11.2.so
7f00c7910000-7f00c7915000 rw-p 00000000 00:00 0
7f00c7915000-7f00c792c000 r-xp 00000000 08:21 34179960 /lib64/libpthread-2.11.2.so
7f00c792c000-7f00c7b2c000 ---p 00017000 08:21 34179960 /lib64/libpthread-2.11.2.so
7f00c7b2c000-7f00c7b2d000 r--p 00017000 08:21 34179960 /lib64/libpthread-2.11.2.so
7f00c7b2d000-7f00c7b2e000 rw-p 00018000 08:21 34179960 /lib64/libpthread-2.11.2.so
7f00c7b2e000-7f00c7b32000 rw-p 00000000 00:00 0
7f00c7b32000-7f00c7b3d000 r-xp 00000000 08:21 34085931 /lib64/libcrypt-2.11.2.so
7f00c7b3d000-7f00c7d3d000 ---p 0000b000 08:21 34085931 /lib64/libcrypt-2.11.2.so
7f00c7d3d000-7f00c7d3e000 r--p 0000b000 08:21 34085931 /lib64/libcrypt-2.11.2.so
7f00c7d3e000-7f00c7d3f000 rw-p 0000c000 08:21 34085931 /lib64/libcrypt-2.11.2.so
7f00c7d3f000-7f00c7d6d000 rw-p 00000000 00:00 0
7f00c7d6d000-7f00c7d6f000 r-xp 00000000 08:21 34085933 /lib64/libdl-2.11.2.so
7f00c7d6f000-7f00c7f6f000 ---p 00002000 08:21 34085933 /lib64/libdl-2.11.2.so
7f00c7f6f000-7f00c7f70000 r--p 00002000 08:21 34085933 /lib64/libdl-2.11.2.so
7f00c7f70000-7f00c7f71000 rw-p 00003000 08:21 34085933 /lib64/libdl-2.11.2.so
7f00c7f71000-7f00c7fc7000 r-xp 00000000 08:21 34085937 /lib64/libm-2.11.2.so
7f00c7fc7000-7f00c81c6000 ---p 00056000 08:21 34085937 /lib64/libm-2.11.2.so
7f00c81c6000-7f00c81c7000 r--p 00055000 08:21 34085937 /lib64/libm-2.11.2.so
7f00c81c7000-7f00c81c8000 rw-p 00056000 08:21 34085937 /lib64/libm-2.11.2.so
7f00c81c8000-7f00c81e7000 r-xp 00000000 08:21 34085813 /lib64/ld-2.11.2.so
7f00c829e000-7f00c838b000 r--p 00000000 08:26 1107518 /usr/lib/locale/en_US.utf8/LC_COLLATE
7f00c838b000-7f00c8390000 rw-p 00000000 00:00 0
7f00c83d4000-7f00c83d5000 r--p 00000000 08:26 1107512 /usr/lib/locale/en_US.utf8/LC_NUMERIC
7f00c83d5000-7f00c83d6000 r--p 00000000 08:26 540176 /usr/lib/locale/en_US.utf8/LC_TIME
7f00c83d6000-7f00c83d7000 r--p 00000000 08:26 540175 /usr/lib/locale/en_US.utf8/LC_MONETARY
7f00c83d7000-7f00c83d8000 r--p 00000000 08:26 51313329 /usr/lib/locale/en_US.utf8/LC_MESSAGES/SYS_LC_MESSAGES
7f00c83d8000-7f00c83d9000 r--p 00000000 08:26 38310951 /usr/lib/locale/en_US.utf8/LC_PAPER
7f00c83d9000-7f00c83da000 r--p 00000000 08:26 38310967 /usr/lib/locale/en_US.utf8/LC_NAME
7f00c83da000-7f00c83db000 r--p 00000000 08:26 540173 /usr/lib/locale/en_US.utf8/LC_ADDRESS
7f00c83db000-7f00c83dc000 r--p 00000000 08:26 38310820 /usr/lib/locale/en_US.utf8/LC_TELEPHONE
7f00c83dc000-7f00c83dd000 r--p 00000000 08:26 38310952 /usr/lib/locale/en_US.utf8/LC_MEASUREMENT
7f00c83dd000-7f00c83e4000 r--s 00000000 08:26 51318147 /usr/lib64/gconv/gconv-modules.cache
7f00c83e4000-7f00c83e5000 r--p 00000000 08:26 540174 /usr/lib/locale/en_US.utf8/LC_IDENTIFICATION
7f00c83e5000-7f00c83e6000 rw-p 00000000 00:00 0
7f00c83e6000-7f00c83e7000 r--p 0001e000 08:21 34085813 /lib64/ld-2.11.2.so
7f00c83e7000-7f00c83e8000 rw-p 0001f000 08:21 34085813 /lib64/ld-2.11.2.so
7f00c83e8000-7f00c83e9000 rw-p 00000000 00:00 0
7fff8b07a000-7fff8b09c000 rw-p 00000000 00:00 0 [stack]
7fff8b1e9000-7fff8b1ea000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
Aborted (core dumped)

Perl Info

Flags:
    category=core
    severity=critical

This perlbug was built using Perl 5.10.0 - Fri Jul 30 00:12:10 UTC 2010
It is being executed now by  Perl 5.10.0 - Thu Sep 16 16:14:28 UTC 2010.

Site configuration information for perl 5.10.0:

Configured by abuild at Thu Sep 16 16:14:28 UTC 2010.

Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
  Platform:
    osname=linux, osvers=2.6.31, archname=x86_64-linux-thread-multi
    uname='linux build35 2.6.31 #1 smp 2010-01-06 16:07:25 +0100 x86_64 x86_64 x86_64 gnulinux '
    config_args='-ds -e -Dprefix=/usr -Dvendorprefix=/usr -Dinstallusrbinperl -Dusethreads -Di_db -Di_dbm -Di_ndbm -Di_gdbm -Duseshrplib=true -DEBUGGING=both -Doptimize=-fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -Wall -pipe -Accflags=-DPERL_USE_SAFE_PUTENV'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DPERL_USE_SAFE_PUTENV -DDEBUGGING -fno-strict-aliasing -pipe -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -Wall -pipe -g',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DPERL_USE_SAFE_PUTENV -DDEBUGGING -fno-strict-aliasing -pipe'
    ccversion='', gccversion='4.4.1 [gcc-4_4-branch revision 150839]', gccosandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib64'
    libpth=/lib64 /usr/lib64 /usr/local/lib64
    libs=-lm -ldl -lcrypt -lpthread
    perllibs=-lm -ldl -lcrypt -lpthread
    libc=/lib64/libc-2.10.1.so, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version='2.10.1'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-rpath,/usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib64'

Locally applied patches:
    


@INC for perl 5.10.0:
    /usr/local/lib/perl/5.8
    /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi
    /usr/lib/perl5/5.10.0
    /usr/lib/perl5/site_perl/5.10.0/x86_64-linux-thread-multi
    /usr/lib/perl5/site_perl/5.10.0
    /usr/lib/perl5/vendor_perl/5.10.0/x86_64-linux-thread-multi
    /usr/lib/perl5/vendor_perl/5.10.0
    /usr/lib/perl5/vendor_perl
    .


Environment for perl 5.10.0:
    HOME=/home/law
    LANG=en_US.UTF-8
    LANGUAGE (unset)
    LC_CTYPE=en_US.UTF-8
    LD_LIBRARY_PATH=/usr/lib64/mpi/gcc/openmpi/lib64
    LOGDIR (unset)
    PATH=.:/sbin:/usr/local/sbin:/usr/lib64/mpi/gcc/openmpi/bin:/home/law/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/X11R6/bin:/usr/games:/opt/kde3/bin:/usr/lib/mit/bin:/usr/lib/mit/sbin:/usr/lib/qt3/bin:/usr/sbin
    PERL5LIB=/usr/local/lib/perl/5.8
    PERL_BADLANG (unset)
    SHELL=/bin/bash

[p5pRT]

From perl-diddler@tlinx.org

adding core file

[p5pRT]

From perl-diddler@tlinx.org

core.7z

[p5pRT]

From @cpansprout

On Sat Oct 30 17​:20​:24 2010, lawalsh@​tlinx.org wrote​:

Running a long HTML parse program -- about 1665 lines long that is in
primary development. If I could figure out how to add an attachment,
I
could attach one here.

You should be able to send an e-mail with an attachment to
perlbug-followup@​perl.org, with [perl #78728] in the subject. It may
take a few days to show up, as that address is moderated (I think).

It processes a local data file though it can
try to
download files as guest from a website. I don't believe it actually
downloads any files before crashing.

It is sensitive to the input file -- since running it twice in a row
doesn't
create the coredump. I have to 'restore' my input file to freshly
downloaded file, (i.e. my perl program modifies the data file, thus a
2nd
run doesn't follow the same execution as the first).

Could you attach your script and the HTML input file?

(If the core.7z file contains those, could you re-send it as a .tar.gz
or zip?)

[p5pRT]

The RT System itself - Status changed from 'new' to 'open'

[p5pRT]

From perl-diddler@tlinx.org

All in bugstuff.tgz.

It's not just 1 html file -- in fact there could be some randomness
involved, as I changed 1 line, and it took a different number of runs to
reproduce the error, but in my setup, with the current data files,
running "crawl.pl" seems to do a Segmentation fault the very first run
-- which is now *different* than the previous error shown -- so
something may be stomping on something [pseudo]-randomly** -- giving me
a glib detectable double-ptr free in some cases, but a plain segv in the
current incarnation.

In an empty directory, I reproduced the error with just the script file
running running it as​:

while ! test -e core; do
  crawl.pl
done

Note that as it's setup now, it fetches 1 item per invocation.

I've modified it to only fetch 1 item/invocation (can be tweaked, search
for 'FETCHMAX'), as it creates a failure case w/fewer files
downloaded.

** - The randomness is due in part to the fact that the cache isn't
static from run to run​: html files in particular are parsed and
rewritten on the fly to localize links (even if the links are already
localized, as the parser doesn't know if a page is coming from the net
or from cache) - this can result in bugs in address translations or
whatever, creating perturbations in future invocations that will cause
the same files to be parsed differently on successive runs (even though
they shouldn't be -- as I *STRESS*, this is far from being of even alpha
quality!)

By tweaking the max items fetched/run, I'm pretty certain it will change
how perl fails or crashes, as smaller values for fetches/run, will allow
the parser-rewriter routines to perturb the file more...(what a feature!
;-) ).

To run this w/ the current files, unpack the bugstuff.tgz file into
an *empty* directory. To reproduce new failures, just extract
'crawl.pl' from the tar file, and run it with the 3-line script shown
above (loop until core file appears), or (if you get rid of the core
file, then some other terminating condition). I've seen it return as
many as 55 files before dying of something.

FWIW...many of the things it tries to fetch have butchered addresses
that end up fetching nothing (other than a 'not found message).

At this point, for all I know, it could be something in SuSE's build
procedure, but I made sure to updated my perl package to the latest
revision from their update server for OpenSuSE 11.2. FYI, PERL 5.12
isn't included in OpenSuSE until its 11.3 release, and upgrading is NOT
a trivial task).

Thanks for looking into this so quickly!

Linda Walsh

[p5pRT]

From perl-diddler@tlinx.org

bugstuff.tgz

[p5pRT]

From @rurban

2010/10/31 lawalsh@​tlinx.org <perlbug-followup@​perl.org>​:

*** glibc detected *** /usr/bin/perl​: corrupted double-linked list​: 0x0000000001bfeab0 ***
======= Backtrace​: =========
/lib64/libc.so.6(+0x73226)[0x7f00c7628226]
/lib64/libc.so.6(+0x75cb0)[0x7f00c762acb0]
/lib64/libc.so.6(__libc_malloc+0x79)[0x7f00c762caa9]
/usr/bin/perl(Perl_safesysmalloc+0x4d)[0x45ca0d]
/usr/bin/perl(Perl_sv_grow+0xf8)[0x496208]

This looks very much like an internal glibc error in malloc, not in perl per se.
--
Reini Urban

[p5pRT]

From perl-diddler@tlinx.org

FReini Urban wrote​:

2010/10/31 lawalsh@​tlinx.org <perlbug-followup@​perl.org>​:

This looks very much like an internal glibc error in malloc, not in perl per se.
====
FYI...

(Not disputing your assessment), but wanted to mention it also dies no explicit glib error or traceback. Instead, just does a Segmentation Violation. Core dump for the segv is in the tar.gz attached to the bug along with the script source and data files (though script can 'reproduce' the "datafiles", as detailed in the bug report).

The core associated with the traceback was attached by itself in .7z format (another open source format that takes about 40-50% less space than gzip).

Both may be in glibc, but there seems to be some pseudo randomness about what the error type may indicating the possibility of some memory corruption, but that's just a guess based on it failing at different places. I think the core in the tgz file is a different error type than the one shown in the traceback (both are from the same script, but different runs).

Just adding in my 2 cents... ;-)

[p5pRT]

From @cpansprout

On Sun Oct 31 14​:48​:50 2010, Linda.Walsh wrote​:

All in bugstuff.tgz.

Attached is a reduced version of the script.

One of the first things I tried was to changed the open() call that
creates the file to write to /dev/null. Then I could reproduce the bug
more reliably.

I think this is a bug in HTML​::Parser. I have sent a report to the LWP
mailing list.

When a new HTML​::Parser object is created from within a start handler,
the internal state of the existing parser gets corrupted.

You may be able to work around the problem by moving the creation of the
parser from sub new to sub parse,

[p5pRT]

From @cpansprout

crawl.pl

[p5pRT]

@iabyn - Status changed from 'open' to 'rejected'

[p5pRT]

From perl-diddler@tlinx.org

In perl 5.16.2, this program still dumps core in multiple ways.

Perl shouldn't do this, regardless of what bad library is thought to be
causing this. Obviously if the library on CPAN is at fault, perl needs
to protect itself against such libraries (or random doo doo being thrown
at it.. not that this program was random, but that it still causes 2
types of errors -- core dump and a HANG,

...
hang...final:
*** Error in `/usr/bin/perl': corrupted double-linked list:
0x0000000001610f50 ***

Core was generated by `/usr/bin/perl ./crawl.pl'.
Program terminated with signal 11, Segmentation fault.
#0 0x00000000004b6668 in Perl_sv_chop ()
(gdb) where
#0 0x00000000004b6668 in Perl_sv_chop ()
#1 0x00007f4aafa35af3 in parse (my_perl=my_perl@entry=0x93d010,
p_state=p_state@entry=0xe956c0, chunk=chunk@entry=0xe3b758,
self=self@entry=0xe94ce0) at hparser.c:1885
#2 0x00007f4aafa36e4d in XS_HTML__Parser_parse (my_perl=0x93d010,
cv=<optimized out>) at Parser.xs:412
#3 0x00000000004a66c2 in Perl_pp_entersub ()
#4 0x000000000049ee66 in Perl_runops_standard ()
#5 0x000000000043cbb2 in perl_run ()
#6 0x000000000041ec5b in main ()
(gdb)

---

um... maybe someone in perl core needs to look at why this is dying in
such a horrid manner?

How do I attach a file to this?

Got the whole thing repeatable in a tmp dir -- 72K compressed tar...

This bug is 3 years old and still not solved...and people wonder why my
frustration level might gone a bit high?

[p5pRT]

perl-diddler@tlinx.org - Status changed from 'rejected' to 'new'

[p5pRT]

From perl-diddler@tlinx.org

Note first time I run the test case, I get the error in perl-- corrupted
double-linked list (and hang) -- pressing SIGQUIT (ctl-backslash) .. got
a core dump and got this stack backtrace:

Core was generated by `/usr/bin/perl ./crawl.pl'.
Program terminated with signal 3, Quit.
#0 0x00007f4bb223c09b in __lll_lock_wait_private () from /lib64/libc.so.6
(gdb) where
#0 0x00007f4bb223c09b in __lll_lock_wait_private () from /lib64/libc.so.6
#1 0x00007f4bb21c7a3c in _L_lock_10265 () from /lib64/libc.so.6
#2 0x00007f4bb21c5255 in malloc () from /lib64/libc.so.6
#3 0x00007f4bb2e53252 in local_strdup () from /lib64/ld-linux-x86-64.so.2
#4 0x00007f4bb2e564b5 in _dl_map_object () from /lib64/ld-linux-x86-64.so.2
#5 0x00007f4bb2e6083e in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
#6 0x00007f4bb2e5c7a6 in _dl_catch_error () from
/lib64/ld-linux-x86-64.so.2
#7 0x00007f4bb2e602b9 in _dl_open () from /lib64/ld-linux-x86-64.so.2
#8 0x00007f4bb2265e62 in do_dlopen () from /lib64/libc.so.6
#9 0x00007f4bb2e5c7a6 in _dl_catch_error () from
/lib64/ld-linux-x86-64.so.2
#10 0x00007f4bb2265eff in dlerror_run () from /lib64/libc.so.6
#11 0x00007f4bb2265f71 in __libc_dlopen_mode () from /lib64/libc.so.6
#12 0x00007f4bb2241735 in init () from /lib64/libc.so.6
#13 0x00007f4bb2500d90 in pthread_once () from /lib64/libpthread.so.0
#14 0x00007f4bb2241854 in backtrace () from /lib64/libc.so.6
#15 0x00007f4bb21bc095 in __libc_message () from /lib64/libc.so.6
#16 0x00007f4bb21c1bf6 in malloc_printerr () from /lib64/libc.so.6
#17 0x00007f4bb21c2c0a in _int_free () from /lib64/libc.so.6
#18 0x00000000004b00a9 in Perl_sv_clear ()
#19 0x00000000004b0772 in Perl_sv_free2 ()
#20 0x00000000004d3440 in Perl_free_tmps ()
#21 0x000000000049f4f5 in Perl_pp_nextstate ()
#22 0x000000000049ee66 in Perl_runops_standard ()
#23 0x000000000043cbb2 in perl_run ()
#24 0x000000000041ec5b in main ()

==============
Running it again, I get a segmentation fault instead of the dll list

(it dies when the program is parsing the same file), FWIW:

It has a backtrace of:
Core was generated by `/usr/bin/perl ./crawl.pl'.
Program terminated with signal 11, Segmentation fault.
#0 0x00000000004b6668 in Perl_sv_chop ()
(gdb) where
#0 0x00000000004b6668 in Perl_sv_chop ()
#1 0x00007ffda0bcaaf3 in parse (my_perl=my_perl@entry=0x1ef0010,
p_state=p_state@entry=0x24ebe70, chunk=chunk@entry=0x23e9868,
self=self@entry=0x24edca8) at hparser.c:1885
#2 0x00007ffda0bcbe4d in XS_HTML__Parser_parse (my_perl=0x1ef0010,
cv=<optimized out>) at Parser.xs:412
#3 0x00000000004a66c2 in Perl_pp_entersub ()
#4 0x000000000049ee66 in Perl_runops_standard ()
#5 0x000000000043cbb2 in perl_run ()
#6 0x00000000Core was generated by `/usr/bin/perl ./crawl.pl'.
Program terminated with signal 11, Segmentation fault.
#0 0x00000000004b6668 in Perl_sv_chop ()
(gdb) where
#0 0x00000000004b6668 in Perl_sv_chop ()
#1 0x00007ffda0bcaaf3 in parse (my_perl=my_perl@entry=0x1ef0010,
p_state=p_state@entry=0x24ebe70, chunk=chunk@entry=0x23e9868,
self=self@entry=0x24edca8) at hparser.c:1885
#2 0x00007ffda0bcbe4d in XS_HTML__Parser_parse (my_perl=0x1ef0010,
cv=<optimized out>) at Parser.xs:412
#3 0x00000000004a66c2 in Perl_pp_entersub ()
#4 0x000000000049ee66 in Perl_runops_standard ()
#5 0x000000000043cbb2 in perl_run ()
#6 0x000000000041ec5b in main ()0041ec5b in main ()

---

Now I'd love to generate a debug perl and give more info on this, but I
have not been able to generate perl on my machine since I reported
that problem last summer. == actually, that's not entirely true,

I can generate one without 'DB: support (which I don't need)... for
whatever reason, the DB tests fail -- even though all the needed DB
files are supposedly loaded ... Of course suse's version generates in
factory where they generate files on completely clean sterile systems
now and refuse to even TEST build products in an opensuse fully
installed 'Devel' environment....(they don't test product interactions
so much these days, it seems, only things installed a specific way in a
specific environment)... ;-) It's a feature -- makes building so much
easier!...

hmmm....

um... attachments?