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Bug #17984

closed

[BUG] try to mark T_NONE object

Added by byroot (Jean Boussier) almost 3 years ago. Updated over 2 years ago.

Status:
Closed
Target version:
-
[ruby-core:104259]

Description

About 1% of our CI jobs fail with this error.

If necessary I can try to find a repro, but these GC issues are hard to pin down because they require GC.stress which is very slow.

<OBJ_INFO:gc_mark_ptr@gc.c:6687> 0x00007f6717407ee8 [2 M   ] T_NONE
/tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/compile_cache/yaml.rb:117: [BUG] try to mark T_NONE object
ruby 3.1.0dev (2021-06-12T19:33:15Z canary-fix 38bf83611e) [x86_64-linux]
 
-- Control frame information -----------------------------------------------
c:0119 p:---- s:0680 e:000679 CFUNC  :fetch
c:0118 p:0174 s:0672 e:000671 METHOD /tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/compile_cache/yaml.rb:117
...
 
-- Ruby level backtrace information ----------------------------------------
...
/tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/compile_cache/yaml.rb:117:in `load_file'
/tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/compile_cache/yaml.rb:117:in `fetch'
 
-- C level backtrace information -------------------------------------------
/usr/local/bin/ruby(rb_print_backtrace+0x11) [0x5581a8716618] vm_dump.c:759
/usr/local/bin/ruby(rb_vm_bugreport) vm_dump.c:1041
/usr/local/bin/ruby(bug_report_end+0x0) [0x5581a8549aef] error.c:777
/usr/local/bin/ruby(rb_bug_without_die) error.c:777
/usr/local/bin/ruby(die+0x0) [0x5581a851857a] error.c:785
/usr/local/bin/ruby(rb_bug) error.c:787
/usr/local/bin/ruby(gc_mark_ptr+0x151) [0x5581a856f7b1] gc.c:6688
/usr/local/bin/ruby(each_insn_value+0x5) [0x5581a85a629d] iseq.c:327
/usr/local/bin/ruby(iseq_extract_values) iseq.c:178
/usr/local/bin/ruby(rb_iseq_each_value) iseq.c:246
/usr/local/bin/ruby(rb_iseq_mark) iseq.c:342
/usr/local/bin/ruby(gc_mark_imemo+0x60) [0x5581a8570720] gc.c:6802
/usr/local/bin/ruby(gc_mark_children) gc.c:6884
/usr/local/bin/ruby(gc_mark_stacked_objects+0x3d) [0x5581a8574a0d] gc.c:7068
/usr/local/bin/ruby(gc_mark_stacked_objects_incremental) gc.c:7102
/usr/local/bin/ruby(gc_marks_rest) gc.c:8084
/usr/local/bin/ruby(gc_rest+0x170) [0x5581a8574db0] gc.c:9003
/usr/local/bin/ruby(gc_rest+0x8) [0x5581a8572df8] gc.c:8875
/usr/local/bin/ruby(garbage_collect) gc.c:8864
/usr/local/bin/ruby(garbage_collect_with_gvl+0x83) [0x5581a8572f03] gc.c:9178
/usr/local/bin/ruby(objspace_malloc_fixup+0x17) [0x5581a8576341] gc.c:11282
/usr/local/bin/ruby(objspace_xmalloc0) gc.c:11353
/usr/local/bin/ruby(str_new0+0xda) [0x5581a868512a] string.c:797
/tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/bootsnap.so(bs_storage_to_output+0x0) [0x7f67ecc403e3] bootsnap.c:525
/tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/bootsnap.so(fetch_cached_data) bootsnap.c:527
/tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/bootsnap.so(bs_fetch) bootsnap.c:735
/tmp/bundle/ruby/3.1.0/gems/bootsnap-1.7.5/lib/bootsnap/bootsnap.so(bs_rb_fetch) bootsnap.c:362
/usr/local/bin/ruby(vm_call_cfunc_with_frame+0x10e) [0x5581a86ec9de] vm_insnhelper.c:2943
/usr/local/bin/ruby(vm_sendish+0x30e) [0x5581a86f847e] vm_insnhelper.c:4521
/usr/local/bin/ruby(vm_exec_core+0xf7) [0x5581a87036a7] insns.def:773
/usr/local/bin/ruby(rb_vm_exec+0xbc) [0x5581a86f8c9c] vm.c:2169
/usr/local/bin/ruby(load_iseq_eval+0xa) [0x5581a85af74a] load.c:594
/usr/local/bin/ruby(require_internal) load.c:1065
/usr/local/bin/ruby(rb_require_string+0x24) [0x5581a85afa1e] load.c:1142
/usr/local/bin/ruby(rb_f_require) load.c:838
....

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