Not A Good Day for Ruby


*** glibc detected *** /usr/bin/ruby: double free or corruption (out): 0x299b2b08 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb7d40d65]
/lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7d44800]
/usr/lib/libruby1.8.so.1.8[0xb7ed5d79]
/usr/lib/libruby1.8.so.1.8(ruby_xmalloc+0x85)[0xb7ed60c5]
/usr/lib/libruby1.8.so.1.8(rb_str_buf_new+0x50)[0xb7f25b80]
/usr/lib/libruby1.8.so.1.8[0xb7ef157e]
/usr/lib/libruby1.8.so.1.8[0xb7eb733a]
/usr/lib/libruby1.8.so.1.8[0xb7ebee8e]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7ec78fc]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7eca68a]
/usr/lib/libruby1.8.so.1.8(rb_yield+0x21)[0xb7ecbad1]
/usr/lib/libruby1.8.so.1.8(rb_ary_each+0x31)[0xb7ea41a1]
/usr/lib/libruby1.8.so.1.8[0xb7eb7345]
/usr/lib/libruby1.8.so.1.8[0xb7ebee8e]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7ec953d]
/usr/lib/libruby1.8.so.1.8[0xb7ec6d64]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7ec8d9f]
/usr/lib/libruby1.8.so.1.8[0xb7eca68a]
/usr/lib/libruby1.8.so.1.8[0xb7ec771d]
/usr/lib/libruby1.8.so.1.8[0xb7ec87d3]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7ec8d9f]
/usr/lib/libruby1.8.so.1.8[0xb7eca68a]
/usr/lib/libruby1.8.so.1.8[0xb7ec771d]
/usr/lib/libruby1.8.so.1.8[0xb7ec7d91]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec7aa4]
/usr/lib/libruby1.8.so.1.8[0xb7ec8d9f]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec797e]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec766a]
/usr/lib/libruby1.8.so.1.8[0xb7ec76ce]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec766a]
/usr/lib/libruby1.8.so.1.8[0xb7ec76ce]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
/usr/lib/libruby1.8.so.1.8[0xb7ebfbc8]
/usr/lib/libruby1.8.so.1.8[0xb7ec766a]
/usr/lib/libruby1.8.so.1.8[0xb7ec76ce]
/usr/lib/libruby1.8.so.1.8[0xb7ebf766]
======= Memory map: ========
08048000-08049000 r-xp 00000000 08:03 1704787    /usr/bin/ruby1.8
08049000-0804a000 rw-p 00000000 08:03 1704787    /usr/bin/ruby1.8
0804a000-2af12000 rw-p 0804a000 00:00 0          [heap]
b5f00000-b5f21000 rw-p b5f00000 00:00 0
b5f21000-b6000000 ---p b5f21000 00:00 0
b6055000-b605f000 r-xp 00000000 08:03 1802307    /lib/libgcc_s.so.1
b605f000-b6060000 rw-p 0000a000 08:03 1802307    /lib/libgcc_s.so.1
b6060000-b7626000 rw-p b6060000 00:00 0
b7626000-b765e000 r-xp 00000000 08:03 737293     /usr/lib/ruby/1.8/i486-linux/nkf.so
b765e000-b7661000 rw-p 00037000 08:03 737293     /usr/lib/ruby/1.8/i486-linux/nkf.so
b7661000-b7662000 rw-p b7661000 00:00 0
b7662000-b7675000 r-xp 00000000 08:03 737288     /usr/lib/ruby/1.8/i486-linux/dl.so
b7675000-b7676000 rw-p 00012000 08:03 737288     /usr/lib/ruby/1.8/i486-linux/dl.so
b7676000-b77a1000 r-xp 00000000 08:03 1671348    /usr/lib/i686/cmov/libcrypto.so.0.9.8
b77a1000-b77b6000 rw-p 0012a000 08:03 1671348    /usr/lib/i686/cmov/libcrypto.so.0.9.8
b77b6000-b77b9000 rw-p b77b6000 00:00 0
b77b9000-b77f6000 r-xp 00000000 08:03 1671350    /usr/lib/i686/cmov/libssl.so.0.9.8
b77f6000-b77fa000 rw-p 0003c000 08:03 1671350    /usr/lib/i686/cmov/libssl.so.0.9.8
b7804000-b7807000 r-xp 00000000 08:03 819234     /usr/lib/ruby/1.8/i486-linux/digest/sha1.so
b7807000-b7808000 rw-p 00002000 08:03 819234     /usr/lib/ruby/1.8/i486-linux/digest/sha1.so
b7808000-b780b000 r-xp 00000000 08:03 737287     /usr/lib/ruby/1.8/i486-linux/digest.so
b780b000-b780c000 rw-p 00002000 08:03 737287     /usr/lib/ruby/1.8/i486-linux/digest.so
b780c000-b7842000 r-xp 00000000 08:03 2297548    /usr/lib/ruby/1.8/i486-linux/openssl.so
b7842000-b7844000 rw-p 00035000 08:03 2297548    /usr/lib/ruby/1.8/i486-linux/openssl.so
b7844000-b7a45000 rw-p b7844000 00:00 0
b7a45000-b7a59000 r-xp 00000000 08:03 1640498    /usr/lib/libz.so.1.2.3.3
b7a59000-b7a5a000 rw-p 00013000 08:03 1640498    /usr/lib/libz.so.1.2.3.3
b7a5b000-b7a5c000 rw-p b7a5b000 00:00 0
b7a5c000-b7a60000 r-xp 00000000 08:03 737298     /usr/lib/ruby/1.8/i486-linux/strscan.so
b7a60000-b7a61000 rw-p 00003000 08:03 737298     /usr/lib/ruby/1.8/i486-linux/strscan.so
b7a61000-b7a6b000 r-xp 00000000 08:03 737296     /usr/lib/ruby/1.8/i486-linux/socket.so
b7a6b000-b7a6c000 rw-p 00009000 08:03 737296     /usr/lib/ruby/1.8/i486-linux/socket.so
b7a6c000-b7a74000 r-xp 00000000 08:03 737323     /usr/lib/ruby/1.8/i486-linux/zlib.so
b7a74000-b7a75000 rw-p 00007000 08:03 737323     /usr/lib/ruby/1.8/i486-linux/zlib.so
b7a75000-b7a8f000 r-xp 00000000 08:03 737299     /usr/lib/ruby/1.8/i486-linux/syck.so
b7a8f000-b7a90000 rw-p 0001a000 08:03 737299     /usr/lib/ruby/1.8/i486-linux/syck.so
b7a90000-b7cd7000 rw-p b7a90000 00:00 0
b7cd7000-b7e1b000 r-xp 00000000 08:03 1838871    /lib/tls/i686/cmov/libc-2.6.1.so
b7e1b000-b7e1c000 r--p 00143000 08:03 1838871    /lib/tls/i686/cmov/libc-2.6.1.so
b7e1c000-b7e1e000 rw-p 00144000 08:03 1838871    /lib/tls/i686/cmov/libc-2.6.1.so
b7e1e000-b7e21000 rw-p b7e1e000 00:00 0
b7e21000-b7e44000 r-xp 00000000 08:03 1838875    /lib/tls/i686/cmov/libm-2.6.1.so
b7e44000-b7e46000 rw-p 00023000 08:03 1838875    /lib/tls/i686/cmov/libm-2.6.1.so
b7e46000-b7e4b000 r-xp 00000000 08:03 1838873    /lib/tls/i686/cmov/libcrypt-2.6.1.so
b7e4b000-b7e4d000 rw-p 00004000 08:03 1838873    /lib/tls/i686/cmov/libcrypt-2.6.1.so
b7e4d000-b7e74000 rw-p b7e4d000 00:00 0
b7e74000-b7e76000 r-xp 00000000 08:03 1838874    /lib/tls/i686/cmov/libdl-2.6.1.so
b7e76000-b7e78000 rw-p 00001000 08:03 1838874    /lib/tls/i686/cmov/libdl-2.6.1.so
b7e78000-b7e79000 rw-p b7e78000 00:00 0
b7e79000-b7e8d000 r-xp 00000000 08:03 1838885    /lib/tls/i686/cmov/libpthread-2.6.1.so
b7e8d000-b7e8f000 rw-p 00013000 08:03 1838885    /lib/tls/i686/cmov/libpthread-2.6.1.so
b7e8f000-b7e91000 rw-p b7e8f000 00:00 0
b7e91000-b7f4f000 r-xp 00000000 08:03 1755193    /usr/lib/libruby1.8.so.1.8.6
b7f4f000-b7f52000 rw-p 000bd000 08:03 1755193    /usr/lib/libruby1.8.so.1.8.6
b7f52000-b7f62000 rw-p b7f52000 00:00 0
b7f62000-b7f64000 r-xp 00000000 08:03 819232     /usr/lib/ruby/1.8/i486-linux/digest/md5.so
b7f64000-b7f65000 rw-p 00001000 08:03 819232     /usr/lib/ruby/1.8/i486-linux/digest/md5.so
b7f65000-b7f66000 r-xp 00000000 08:03 737291     /usr/lib/ruby/1.8/i486-linux/fcntl.so
b7f66000-b7f67000 rw-p 00000000 08:03 737291     /usr/lib/ruby/1.8/i486-linux/fcntl.so
b7f67000-b7f6b000 r-xp 00000000 08:03 737297     /usr/lib/ruby/1.8/i486-linux/stringio.so
b7f6b000-b7f6c000 rw-p 00003000 08:03 737297     /usr/lib/ruby/1.8/i486-linux/stringio.so
b7f6c000-b7f6e000 r-xp 00000000 08:03 737290     /usr/lib/ruby/1.8/i486-linux/etc.so
b7f6e000-b7f6f000 rw-p 00001000 08:03 737290     /usr/lib/ruby/1.8/i486-linux/etc.so
b7f6f000-b7f72000 r-xp 00000000 08:03 737301     /usr/lib/ruby/1.8/i486-linux/thread.so
b7f72000-b7f73000 rw-p 00002000 08:03 737301     /usr/lib/ruby/1.8/i486-linux/thread.so
b7f73000-b7f75000 rw-p b7f73000 00:00 0
b7f75000-b7f8f000 r-xp 00000000 08:03 1808831    /lib/ld-2.6.1.so
b7f8f000-b7f91000 rw-p 00019000 08:03 1808831    /lib/ld-2.6.1.so
bfef7000-bff1c000 rw-p bfef7000 00:00 0          [stack]
ffffe000-fffff000 r-xp 00000000 00:00 0          [vdso]
Aborted (core dumped)

The output of one of the four crashes I earned from the Ruby interpreter today. It’s likely the rubyzip library being flaky, but ouch. I’ve got some long jobs pushing around ~12G (uncompressed) for a project I’ll show off later this week and it’s hard to get finished when I have to babysit jobs.

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Snarky 2008-06-23 21:38

Hmm… when I saw the post title I assumed you were going to mention the security holes recently discovered, not a simple stack trace! I feel for your situation but, hey, it could have been worse!

David Bremner 2008-06-25 17:10

The security holes in Ruby have been around for awhile. Ruby 1.9 uses ANSI C, so the source isn’t quite as painful to look at.

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Not A Good Day for Ruby

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