Bug #19159: ObjectSpace segfaults

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.2.0dev (2022-11-29T09:23:00Z master 67ae3e9738) +YJIT [arm64-darwin21]
• Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN

[matsuda (Akira Matsuda)]

$ ruby -e 'p ObjectSpace.each_object.to_a'

segfaults on my M1MBP as follows:

$  ruby -e 'p ObjectSpace.each_object.to_a'
-e:1: [BUG] Segmentation fault at 0x0000000000000000
ruby 3.2.0dev (2022-11-29T09:23:00Z master 67ae3e9738) +YJIT [arm64-darwin21]

-- Crash Report log information --------------------------------------------
   See Crash Report log file in one of the following locations:
     * ~/Library/Logs/DiagnosticReports
     * /Library/Logs/DiagnosticReports
   for more details.
Don't forget to include the above Crash Report log file in bug reports.

-- Control frame information -----------------------------------------------
c:0005 p:---- s:0017 e:000016 CFUNC  :inspect
c:0004 p:---- s:0014 e:000013 CFUNC  :inspect
c:0003 p:---- s:0011 e:000010 CFUNC  :p
c:0002 p:0009 s:0006 e:000005 EVAL   -e:1 [FINISH]
c:0001 p:0000 s:0003 E:0005a0 DUMMY  [FINISH]

-- Ruby level backtrace information ----------------------------------------
-e:1:in `<main>'
-e:1:in `p'
-e:1:in `inspect'
-e:1:in `inspect'

-- Machine register context ------------------------------------------------
  x0: 0x0000000000000000  x1: 0x0000000000000004  x2: 0x0000000000000001
  x3: 0x0000000104090e94  x4: 0x0000000000000275  x5: 0x0000000000000ad1
  x6: 0x0000000000000020  x7: 0x000000016ef18a00 x18: 0x0000000000000000
 x19: 0x0000000000000000 x20: 0x0000000000000001 x21: 0x0000000000000004
 x22: 0x0000000104090e98 x23: 0x0000000000000001 x24: 0x0000000000000000
 x25: 0x0000000000000001 x26: 0x0000000158127f00 x27: 0x00006000032ab4b0
 x28: 0x0000000055550083  lr: 0x000000010108a058  fp: 0x000000016ef1a0f0
  sp: 0x000000016ef1a0b0

-- C level backtrace information -------------------------------------------
~/.rbenv/versions/3.2.0-dev/bin/ruby(rb_vm_bugreport+0x2410000000009ac) [0x24100010115a564]
~/.rbenv/versions/3.2.0-dev/bin/ruby(rb_bug_for_fatal_signal) [0x9b16000100f7fe68]
~/.rbenv/versions/3.2.0-dev/bin/ruby(sig_do_nothing) [0x646c0001010b9638]
/usr/lib/system/libsystem_platform.dylib(_sigtramp+0x664c000000000038) [0x664c0001a77f34a4]
[0x38]

-- Other runtime information -----------------------------------------------

* Loaded script: -e

* Loaded features:

    0 enumerator.so
    1 thread.rb
    2 fiber.so
    3 rational.so
    4 complex.so
    5 ruby2_keywords.rb
    6 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/arm64-darwin21/enc/encdb.bundle
    7 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/arm64-darwin21/enc/trans/transdb.bundle
    8 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/arm64-darwin21/rbconfig.rb
    9 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/compatibility.rb
   10 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/defaults.rb
   11 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/deprecate.rb
   12 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/errors.rb
   13 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/unknown_command_spell_checker.rb
   14 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/exceptions.rb
   15 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/basic_specification.rb
   16 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/stub_specification.rb
   17 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/platform.rb
   18 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/util/list.rb
   19 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/version.rb
   20 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/requirement.rb
   21 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/specification.rb
   22 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/util.rb
   23 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/dependency.rb
   24 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/core_ext/kernel_gem.rb
   25 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/arm64-darwin21/monitor.bundle
   26 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/monitor.rb
   27 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/core_ext/kernel_require.rb
   28 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/core_ext/kernel_warn.rb
   29 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems.rb
   30 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/path_support.rb
   31 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/error_highlight/version.rb
   32 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/error_highlight/base.rb
   33 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/error_highlight/formatter.rb
   34 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/error_highlight/core_ext.rb
   35 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/error_highlight.rb
   36 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/version.rb
   37 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/core_ext/name_error.rb
   38 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/levenshtein.rb
   39 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/jaro_winkler.rb
   40 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checker.rb
   41 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb
   42 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
   43 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/name_error_checkers.rb
   44 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/method_name_checker.rb
   45 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/key_error_checker.rb
   46 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/null_checker.rb
   47 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/tree_spell_checker.rb
   48 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/require_path_checker.rb
   49 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/pattern_key_name_checker.rb
   50 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/formatter.rb
   51 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean.rb
   52 ~/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/syntax_suggest/core_ext.rb

* Process memory map:

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15c800000-15d000000 rw-
15d000000-15d800000 rw-
15d800000-15e000000 rw-
15e000000-15e800000 rw-
15e800000-15f000000 rw-
15f000000-15f800000 rw-
15f800000-160000000 rw-
160000000-162000000 rw-
162000000-162800000 rw-
16af1c000-16e720000 ---
16e720000-16ef1c000 rw-
16ef1c000-16ef20000 ---
16ef20000-16efa8000 rw-
180000000-1fc000000 r--
1fc000000-1fd9d8000 r--
1fd9d8000-1fd9fc000 rw-
1fd9fc000-1fe000000 rw-
1fe000000-200000000 r--
200000000-2001e8000 r--
2001e8000-2018dc000 rw-
2018dc000-204c64000 r--
204c64000-206000000 r--
206000000-236000000 r--
236000000-236a10000 r--
236a10000-2377f4000 rw-
2377f4000-238ac0000 r--
238ac0000-23a000000 r--
23a000000-280000000 r--
fc0000000-1000000000 ---
1000000000-7000000000 ---
600000000000-600008000000 rw-
600008000000-600010000000 rw-
600010000000-600018000000 rw-
600018000000-600020000000 rw-
[IMPORTANT]
Don't forget to include the Crash Report log file under
DiagnosticReports directory in bug reports.

[hsbt (Hiroshi SHIBATA)]

I could reproduce this. And It resolve with --disable-error_highlight. (Thanks for investigating @yahonda (Yasuo Honda) )

[hsbt (Hiroshi SHIBATA)]

• Related to Bug #19156: ObjectSpace.dump_all segfault during string inspection added

[yahonda (Yasuo Honda)]

--disable-error_highlight did not help when I execute it with Ruby 3.2.0dev.

$ rbenv install 3.2.0-dev
$ rbenv global 3.2.0-dev
$ ruby -v
ruby 3.2.0dev (2022-11-30T04:52:33Z master 9a84971315) [x86_64-linux]

$ ruby -e 'p ObjectSpace.each_object.to_a' --disable-error_highlight
-e:1: [BUG] Segmentation fault at 0x0000000000000010
ruby 3.2.0dev (2022-11-30T04:52:33Z master 9a84971315) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0005 p:---- s:0017 e:000016 CFUNC  :inspect
c:0004 p:---- s:0014 e:000013 CFUNC  :inspect
c:0003 p:---- s:0011 e:000010 CFUNC  :p
c:0002 p:0009 s:0006 e:000005 EVAL   -e:1 [FINISH]
c:0001 p:0000 s:0003 E:001910 DUMMY  [FINISH]

-- Ruby level backtrace information ----------------------------------------
-e:1:in `<main>'
-e:1:in `p'
-e:1:in `inspect'
-e:1:in `inspect'

-- Machine register context ------------------------------------------------
 RIP: 0x000056335bed3a5c RBP: 0x0000000000000001 RSP: 0x00007ffcb5848780
 RAX: 0x0000000000000005 RBX: 0x0000000000000000 RCX: 0x0000000000000020
 RDX: 0x0000000000000001 RDI: 0x0000000000000000 RSI: 0x0000000000000004
  R8: 0x00007fd6c4679410  R9: 0x00007fd6c9e6c600 R10: 0xffffffffffffffff
 R11: 0x00007fd6c4689fc8 R12: 0x0000000000000004 R13: 0x00007fd6c46793f8
 R14: 0x00007ffcb58487f0 R15: 0x0000000000000000 EFL: 0x0000000000010246

-- C level backtrace information -------------------------------------------
ruby(rb_vm_bugreport+0x5cf) [0x56335bf7237f]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_bug_for_fatal_signal+0xec) [0x56335c01ca2c]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(sigsegv+0x4f) [0x56335bebc92f]
[0x7fd6c9c3bcf0]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(str_subseq+0x2c) [0x56335bed3a5c]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_str_subseq+0x12) [0x56335bee2df2]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(match_inspect+0x18c) [0x56335be88acc]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(vm_call0_body+0x135) [0x56335bf5ba95]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_funcallv_scope+0x1b1) [0x56335bf5fb11]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_inspect+0x18) [0x56335be130b8]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(inspect_ary+0x61) [0x56335bf7fa11]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(exec_recursive+0x446) [0x56335befe696]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(vm_call0_body+0x135) [0x56335bf5ba95]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_funcallv_scope+0x1b1) [0x56335bf5fb11]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_inspect+0x18) [0x56335be130b8]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_f_p+0x44) [0x56335bd9e7d4]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(vm_call_cfunc_with_frame+0x11f) [0x56335bf47a9f]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(vm_exec_core+0x10b) [0x56335bf643cb]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_vm_exec+0x177) [0x56335bf54a17]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(rb_ec_exec_node+0xb1) [0x56335bd581a1]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(ruby_run_node+0x4c) [0x56335bd5d43c]
/home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby(main+0x66) [0x56335bd57e16]

-- Other runtime information -----------------------------------------------

* Loaded script: -e

* Loaded features:

    0 enumerator.so
    1 thread.rb
    2 fiber.so
    3 rational.so
    4 complex.so
    5 ruby2_keywords.rb
    6 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/encdb.so
    7 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/trans/transdb.so
    8 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/rbconfig.rb
    9 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/compatibility.rb
   10 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/defaults.rb
   11 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/deprecate.rb
   12 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/errors.rb
   13 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/unknown_command_spell_checker.rb
   14 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/exceptions.rb
   15 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/basic_specification.rb
   16 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/stub_specification.rb
   17 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/platform.rb
   18 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/util/list.rb
   19 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/version.rb
   20 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/requirement.rb
   21 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/specification.rb
   22 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/util.rb
   23 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/dependency.rb
   24 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/core_ext/kernel_gem.rb
   25 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/monitor.so
   26 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/monitor.rb
   27 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/core_ext/kernel_require.rb
   28 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/core_ext/kernel_warn.rb
   29 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems.rb
   30 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/rubygems/path_support.rb
   31 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/version.rb
   32 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/core_ext/name_error.rb
   33 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/levenshtein.rb
   34 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/jaro_winkler.rb
   35 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checker.rb
   36 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb
   37 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
   38 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/name_error_checkers.rb
   39 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/method_name_checker.rb
   40 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/key_error_checker.rb
   41 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/null_checker.rb
   42 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/tree_spell_checker.rb
   43 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/require_path_checker.rb
   44 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/spell_checkers/pattern_key_name_checker.rb
   45 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean/formatter.rb
   46 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/did_you_mean.rb
   47 /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/syntax_suggest/core_ext.rb

* Process memory map:

56335bd24000-56335bd53000 r--p 00000000 103:02 24117809                  /home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby
56335bd53000-56335c029000 r-xp 0002f000 103:02 24117809                  /home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby
56335c029000-56335c160000 r--p 00305000 103:02 24117809                  /home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby
56335c160000-56335c16a000 r--p 0043b000 103:02 24117809                  /home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby
56335c16a000-56335c16b000 rw-p 00445000 103:02 24117809                  /home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby
56335c16b000-56335c17c000 rw-p 00000000 00:00 0
56335c335000-56335c846000 rw-p 00000000 00:00 0                          [heap]
7fd6c1400000-7fd6c2dda000 r--s 00000000 103:02 24117809                  /home/yahonda/.rbenv/versions/3.2.0-dev/bin/ruby
7fd6c2e3a000-7fd6c363b000 rw-p 00000000 00:00 0
7fd6c363b000-7fd6c3e3c000 rw-p 00000000 00:00 0
7fd6c457f000-7fd6c45d0000 rw-p 00000000 00:00 0
7fd6c45f0000-7fd6c45f3000 r--p 00000000 103:02 42998345                  /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7fd6c45f3000-7fd6c460a000 r-xp 00003000 103:02 42998345                  /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7fd6c460a000-7fd6c460e000 r--p 0001a000 103:02 42998345                  /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7fd6c460e000-7fd6c460f000 r--p 0001d000 103:02 42998345                  /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7fd6c460f000-7fd6c4610000 rw-p 0001e000 103:02 42998345                  /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7fd6c4610000-7fd6c4750000 rw-p 00000000 00:00 0
7fd6c4756000-7fd6c4757000 ---p 00000000 00:00 0
7fd6c4757000-7fd6c47f8000 rw-p 00000000 00:00 0
7fd6c47f8000-7fd6c47f9000 ---p 00000000 00:00 0
7fd6c47f9000-7fd6c489a000 rw-p 00000000 00:00 0
7fd6c489a000-7fd6c489b000 ---p 00000000 00:00 0
7fd6c489b000-7fd6c493c000 rw-p 00000000 00:00 0
7fd6c493c000-7fd6c493d000 ---p 00000000 00:00 0
7fd6c493d000-7fd6c49de000 rw-p 00000000 00:00 0
7fd6c49de000-7fd6c49df000 ---p 00000000 00:00 0
7fd6c49df000-7fd6c4a80000 rw-p 00000000 00:00 0
7fd6c4a80000-7fd6c4a81000 ---p 00000000 00:00 0
7fd6c4a81000-7fd6c4b22000 rw-p 00000000 00:00 0
7fd6c4b22000-7fd6c4b23000 ---p 00000000 00:00 0
7fd6c4b23000-7fd6c4bc4000 rw-p 00000000 00:00 0
7fd6c4bc4000-7fd6c4bc5000 ---p 00000000 00:00 0
7fd6c4bc5000-7fd6c4c66000 rw-p 00000000 00:00 0
7fd6c4c66000-7fd6c4c67000 ---p 00000000 00:00 0
7fd6c4c67000-7fd6c4d08000 rw-p 00000000 00:00 0
7fd6c4d08000-7fd6c4d09000 ---p 00000000 00:00 0
7fd6c4d09000-7fd6c4daa000 rw-p 00000000 00:00 0
7fd6c4daa000-7fd6c4dab000 ---p 00000000 00:00 0
7fd6c4dab000-7fd6c4e4c000 rw-p 00000000 00:00 0
7fd6c4e4c000-7fd6c4e4d000 ---p 00000000 00:00 0
7fd6c4e4d000-7fd6c4eee000 rw-p 00000000 00:00 0
7fd6c4eee000-7fd6c4eef000 ---p 00000000 00:00 0
7fd6c4eef000-7fd6c4f90000 rw-p 00000000 00:00 0
7fd6c4f90000-7fd6c4f91000 ---p 00000000 00:00 0
7fd6c4f91000-7fd6c5032000 rw-p 00000000 00:00 0
7fd6c5032000-7fd6c5033000 ---p 00000000 00:00 0
7fd6c5033000-7fd6c50d4000 rw-p 00000000 00:00 0
7fd6c50d4000-7fd6c50d5000 ---p 00000000 00:00 0
7fd6c50d5000-7fd6c5176000 rw-p 00000000 00:00 0
7fd6c5176000-7fd6c5177000 ---p 00000000 00:00 0
7fd6c5177000-7fd6c5218000 rw-p 00000000 00:00 0
7fd6c5218000-7fd6c5219000 ---p 00000000 00:00 0
7fd6c5219000-7fd6c52ba000 rw-p 00000000 00:00 0
7fd6c52ba000-7fd6c52bb000 ---p 00000000 00:00 0
7fd6c52bb000-7fd6c535c000 rw-p 00000000 00:00 0
7fd6c535c000-7fd6c535d000 ---p 00000000 00:00 0
7fd6c535d000-7fd6c53fe000 rw-p 00000000 00:00 0
7fd6c53fe000-7fd6c53ff000 ---p 00000000 00:00 0
7fd6c53ff000-7fd6c54a0000 rw-p 00000000 00:00 0
7fd6c54a0000-7fd6c54a1000 ---p 00000000 00:00 0
7fd6c54a1000-7fd6c5542000 rw-p 00000000 00:00 0
7fd6c5542000-7fd6c5543000 ---p 00000000 00:00 0
7fd6c5543000-7fd6c55e4000 rw-p 00000000 00:00 0
7fd6c55e4000-7fd6c55e5000 ---p 00000000 00:00 0
7fd6c55e5000-7fd6c5686000 rw-p 00000000 00:00 0
7fd6c5686000-7fd6c5687000 ---p 00000000 00:00 0
7fd6c5687000-7fd6c5728000 rw-p 00000000 00:00 0
7fd6c5728000-7fd6c5729000 ---p 00000000 00:00 0
7fd6c5729000-7fd6c57ca000 rw-p 00000000 00:00 0
7fd6c57ca000-7fd6c57cb000 ---p 00000000 00:00 0
7fd6c57cb000-7fd6c586c000 rw-p 00000000 00:00 0
7fd6c586c000-7fd6c586d000 ---p 00000000 00:00 0
7fd6c586d000-7fd6c590e000 rw-p 00000000 00:00 0
7fd6c590e000-7fd6c590f000 ---p 00000000 00:00 0
7fd6c590f000-7fd6c59b0000 rw-p 00000000 00:00 0
7fd6c59b0000-7fd6c59b1000 ---p 00000000 00:00 0
7fd6c59b1000-7fd6c5a52000 rw-p 00000000 00:00 0
7fd6c5a52000-7fd6c5a53000 ---p 00000000 00:00 0
7fd6c5a53000-7fd6c5af4000 rw-p 00000000 00:00 0
7fd6c5af4000-7fd6c5af5000 ---p 00000000 00:00 0
7fd6c5af5000-7fd6c8c00000 rw-p 00000000 00:00 0
7fd6c8c00000-7fd6c9aed000 r--p 00000000 103:02 42997062                  /usr/lib/locale/locale-archive
7fd6c9aff000-7fd6c9c00000 rw-p 00000000 00:00 0
7fd6c9c00000-7fd6c9c22000 r--p 00000000 103:02 42998042                  /usr/lib/x86_64-linux-gnu/libc.so.6
7fd6c9c22000-7fd6c9d9b000 r-xp 00022000 103:02 42998042                  /usr/lib/x86_64-linux-gnu/libc.so.6
7fd6c9d9b000-7fd6c9df2000 r--p 0019b000 103:02 42998042                  /usr/lib/x86_64-linux-gnu/libc.so.6
7fd6c9df2000-7fd6c9df6000 r--p 001f1000 103:02 42998042                  /usr/lib/x86_64-linux-gnu/libc.so.6
7fd6c9df6000-7fd6c9df8000 rw-p 001f5000 103:02 42998042                  /usr/lib/x86_64-linux-gnu/libc.so.6
7fd6c9df8000-7fd6c9e05000 rw-p 00000000 00:00 0
7fd6c9e20000-7fd6c9eb0000 rw-p 00000000 00:00 0
7fd6c9eb9000-7fd6c9eba000 r--p 00000000 103:02 24117815                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/monitor.so
7fd6c9eba000-7fd6c9ebb000 r-xp 00001000 103:02 24117815                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/monitor.so
7fd6c9ebb000-7fd6c9ebc000 r--p 00002000 103:02 24117815                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/monitor.so
7fd6c9ebc000-7fd6c9ebd000 r--p 00002000 103:02 24117815                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/monitor.so
7fd6c9ebd000-7fd6c9ebe000 rw-p 00003000 103:02 24117815                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/monitor.so
7fd6c9ebe000-7fd6c9f15000 r--p 00000000 103:02 43127753                  /usr/lib/locale/C.utf8/LC_CTYPE
7fd6c9f15000-7fd6c9f1a000 rw-p 00000000 00:00 0
7fd6c9f1a000-7fd6c9f28000 r--p 00000000 103:02 42998712                  /usr/lib/x86_64-linux-gnu/libm.so.6
7fd6c9f28000-7fd6c9fa6000 r-xp 0000e000 103:02 42998712                  /usr/lib/x86_64-linux-gnu/libm.so.6
7fd6c9fa6000-7fd6ca001000 r--p 0008c000 103:02 42998712                  /usr/lib/x86_64-linux-gnu/libm.so.6
7fd6ca001000-7fd6ca002000 r--p 000e6000 103:02 42998712                  /usr/lib/x86_64-linux-gnu/libm.so.6
7fd6ca002000-7fd6ca003000 rw-p 000e7000 103:02 42998712                  /usr/lib/x86_64-linux-gnu/libm.so.6
7fd6ca003000-7fd6ca005000 r--p 00000000 103:02 42998122                  /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7fd6ca005000-7fd6ca019000 r-xp 00002000 103:02 42998122                  /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7fd6ca019000-7fd6ca032000 r--p 00016000 103:02 42998122                  /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7fd6ca032000-7fd6ca033000 r--p 0002f000 103:02 42998122                  /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7fd6ca033000-7fd6ca034000 rw-p 00030000 103:02 42998122                  /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7fd6ca034000-7fd6ca03c000 rw-p 00000000 00:00 0
7fd6ca03c000-7fd6ca046000 r--p 00000000 103:02 42998406                  /usr/lib/x86_64-linux-gnu/libgmp.so.10.4.1
7fd6ca046000-7fd6ca0a6000 r-xp 0000a000 103:02 42998406                  /usr/lib/x86_64-linux-gnu/libgmp.so.10.4.1
7fd6ca0a6000-7fd6ca0bd000 r--p 0006a000 103:02 42998406                  /usr/lib/x86_64-linux-gnu/libgmp.so.10.4.1
7fd6ca0bd000-7fd6ca0be000 r--p 00080000 103:02 42998406                  /usr/lib/x86_64-linux-gnu/libgmp.so.10.4.1
7fd6ca0be000-7fd6ca0bf000 rw-p 00081000 103:02 42998406                  /usr/lib/x86_64-linux-gnu/libgmp.so.10.4.1
7fd6ca0bf000-7fd6ca0c1000 r--p 00000000 103:02 42999435                  /usr/lib/x86_64-linux-gnu/libz.so.1.2.11
7fd6ca0c1000-7fd6ca0d3000 r-xp 00002000 103:02 42999435                  /usr/lib/x86_64-linux-gnu/libz.so.1.2.11
7fd6ca0d3000-7fd6ca0d9000 r--p 00014000 103:02 42999435                  /usr/lib/x86_64-linux-gnu/libz.so.1.2.11
7fd6ca0d9000-7fd6ca0da000 r--p 0001a000 103:02 42999435                  /usr/lib/x86_64-linux-gnu/libz.so.1.2.11
7fd6ca0da000-7fd6ca0db000 rw-p 0001b000 103:02 42999435                  /usr/lib/x86_64-linux-gnu/libz.so.1.2.11
7fd6ca0dc000-7fd6ca0dd000 r--p 00000000 103:02 24122073                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/trans/transdb.so
7fd6ca0dd000-7fd6ca0de000 r-xp 00001000 103:02 24122073                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/trans/transdb.so
7fd6ca0de000-7fd6ca0df000 r--p 00002000 103:02 24122073                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/trans/transdb.so
7fd6ca0df000-7fd6ca0e0000 r--p 00002000 103:02 24122073                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/trans/transdb.so
7fd6ca0e0000-7fd6ca0e1000 rw-p 00003000 103:02 24122073                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/trans/transdb.so
7fd6ca0e1000-7fd6ca0e2000 r--p 00000000 103:02 24117834                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/encdb.so
7fd6ca0e2000-7fd6ca0e3000 r-xp 00001000 103:02 24117834                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/encdb.so
7fd6ca0e3000-7fd6ca0e4000 r--p 00002000 103:02 24117834                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/encdb.so
7fd6ca0e4000-7fd6ca0e5000 r--p 00002000 103:02 24117834                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/encdb.so
7fd6ca0e5000-7fd6ca0e6000 rw-p 00003000 103:02 24117834                  /home/yahonda/.rbenv/versions/3.2.0-dev/lib/ruby/3.2.0+3/x86_64-linux/enc/encdb.so
7fd6ca0e6000-7fd6ca0ed000 r--s 00000000 103:02 43651195                  /usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache
7fd6ca0ed000-7fd6ca0ef000 rw-p 00000000 00:00 0
7fd6ca0ef000-7fd6ca0f0000 r--p 00000000 103:02 42997696                  /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7fd6ca0f0000-7fd6ca119000 r-xp 00001000 103:02 42997696                  /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7fd6ca119000-7fd6ca123000 r--p 0002a000 103:02 42997696                  /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7fd6ca123000-7fd6ca125000 r--p 00034000 103:02 42997696                  /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7fd6ca125000-7fd6ca127000 rw-p 00036000 103:02 42997696                  /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7ffcb504d000-7ffcb584c000 rw-p 00000000 00:00 0                          [stack]
7ffcb5883000-7ffcb5887000 r--p 00000000 00:00 0                          [vvar]
7ffcb5887000-7ffcb5889000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0                  [vsyscall]


Aborted (core dumped)
$

[mame (Yusuke Endoh)]

https://github.com/ruby/ruby/pull/6836

An incomplete MatchData object was created during String#scan (which is called for Gem::Version, not error_highlight :-).

[mame (Yusuke Endoh)]

• Status changed from Open to Closed

Applied in changeset git|ab4c7077cc44cd6725625562b7380a44cf462190.

---

Prevent segfault in String#scan with ObjectSpace.each_object

Calling String#scan without a block creates an incomplete MatchData
object whose RMATCH(match)->str is Qfalse. Usually this object is not
leaked, but it was possible to pull it by using ObjectSpace.each_object.

This change hides the internal MatchData object by using rb_obj_hide.

Fixes [Bug #19159]

[hsbt (Hiroshi SHIBATA)]

I confirmed to work with https://github.com/ruby/ruby/pull/6836

[matsuda (Akira Matsuda)]

Just confirmed the fix. Thank you for the quick fix, @mame (Yusuke Endoh) !