Ruby

This issue was found by @mame (Yusuke Endoh) yesterday on our new Power 9 server. I would like to open the ticket.

The test failure was reported and fixed on the #17306 6 months ago.
However on the latest master adcbae8d49ec04d365ce13274783b1495c3c7d0e, Power 9 (ppc64le) Ubuntu focal, I see the TestGCCompact#test_ast_compacts test fails.

$ lscpu | head -3 Architecture: ppc64le Byte Order: Little Endian CPU(s): 8 $ lscpu | grep ^Model Model: 2.2 (pvr 004e 1202) Model name: POWER9 (architected), altivec supported $ uname -m ppc64le $ cat /etc/os-release | head -3 NAME="Ubuntu" VERSION="20.04.2 LTS (Focal Fossa)" ID=ubuntu $ gcc --version gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0 Copyright (C) 2019 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ autoconf $ ./configure \ --prefix=${HOME}/local/ruby-master-adcbae8 \ --enable-shared $ make $ make install $ make check 2>&1 | tee check.log ... <internal:gc>:213: [BUG] Couldn't unprotect page 0x00000a1b33ba8000 ruby 3.1.0dev (2021-05-19T05:24:01Z master adcbae8d49) [powerpc64le-linux] -- Control frame information ----------------------------------------------- c:0031 p:0003 s:0174 e:000173 METHOD <internal:gc>:213 c:0030 p:0026 s:0170 e:000169 METHOD /home/jaruga/git/ruby/ruby/test/ruby/test_gc_compact.rb:154 ... c:0001 p:0000 s:0003 E:001550 (none) [FINISH] ... -- C level backtrace information ------------------------------------------- /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_vm_bugreport+0x1b4) [0x7441be9c78f4] vm_dump.c:759 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_bug_without_die+0x9c) [0x7441be740dec] error.c:777 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(die+0x0) [0x7441be6807dc] error.c:785 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_bug) error.c:787 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(unlock_page_body+0x10) [0x7441be771e80] gc.c:4889 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_fill_swept_page) gc.c:5184 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_page_sweep) gc.c:5392 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_sweep_step) gc.c:5562 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_sweep_rest+0x24) [0x7441be77208c] gc.c:5619 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_sweep) gc.c:5737 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_marks+0x15c) [0x7441be778d08] gc.c:8024 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_start) gc.c:8854 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_multi_ractor_p+0x0) [0x7441be77aa38] gc.c:8742 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_vm_lock_leave) vm_sync.h:92 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(garbage_collect) gc.c:8744 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_start_internal) gc.c:9086 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(gc_compact) gc.c:10002 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(builtin_invoker0+0x24) [0x7441be988d34] vm_insnhelper.c:5429 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_exec_core+0x1914) [0x7441be9a8b14] vm_insnhelper.c:5569 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_vm_exec+0x14c) [0x7441be9acfdc] vm.c:2169 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_yield+0x288) [0x7441be9b23c8] vm.c:1260 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_ary_collect+0x74) [0x7441be68ca24] array.c:3646 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(ractor_safe_call_cfunc_0+0x24) [0x7441be9885b4] vm_insnhelper.c:2760 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_cfunc_with_frame+0x140) [0x7441be993d30] vm_insnhelper.c:2943 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_sendish+0x364) [0x7441be9a2ad4] vm_insnhelper.c:4516 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_exec_core+0x294) [0x7441be9a7494] insns.def:754 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_vm_exec+0x14c) [0x7441be9acfdc] vm.c:2169 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_yield+0x288) [0x7441be9b23c8] vm.c:1260 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_ary_each+0x54) [0x7441be683844] array.c:2534 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(ractor_safe_call_cfunc_0+0x24) [0x7441be9885b4] vm_insnhelper.c:2760 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_cfunc_with_frame+0x140) [0x7441be993d30] vm_insnhelper.c:2943 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method_each_type+0xc0) [0x7441be9ae6d0] vm_insnhelper.c:3433 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method+0xdc) [0x7441be9aeeec] vm_insnhelper.c:3537 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method_each_type+0x510) [0x7441be9aeb20] vm_insnhelper.c:3412 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method+0xdc) [0x7441be9aeeec] vm_insnhelper.c:3537 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_sendish+0x364) [0x7441be9a2ad4] vm_insnhelper.c:4516 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_exec_core+0x294) [0x7441be9a7494] insns.def:754 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_vm_exec+0x14c) [0x7441be9acfdc] vm.c:2169 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_yield+0x288) [0x7441be9b23c8] vm.c:1260 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_ary_each+0x54) [0x7441be683844] array.c:2534 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(ractor_safe_call_cfunc_0+0x24) [0x7441be9885b4] vm_insnhelper.c:2760 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_cfunc_with_frame+0x140) [0x7441be993d30] vm_insnhelper.c:2943 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method_each_type+0xc0) [0x7441be9ae6d0] vm_insnhelper.c:3433 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method+0xdc) [0x7441be9aeeec] vm_insnhelper.c:3537 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method_each_type+0x510) [0x7441be9aeb20] vm_insnhelper.c:3412 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method+0xdc) [0x7441be9aeeec] vm_insnhelper.c:3537 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_sendish+0x364) [0x7441be9a2ad4] vm_insnhelper.c:4516 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_exec_core+0x294) [0x7441be9a7494] insns.def:754 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_vm_exec+0x14c) [0x7441be9acfdc] vm.c:2169 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_iseq_eval+0x190) [0x7441be9b0bf0] vm.c:2406 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(require_internal+0x998) [0x7441be7cc8c8] load.c:594 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_require_string+0x44) [0x7441be7cd8f4] load.c:1142 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_f_require_relative+0x48) [0x7441be7cd9e8] load.c:857 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(ractor_safe_call_cfunc_1+0x28) [0x7441be988608] vm_insnhelper.c:2767 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_cfunc_with_frame+0x140) [0x7441be993d30] vm_insnhelper.c:2943 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method_each_type+0xc0) [0x7441be9ae6d0] vm_insnhelper.c:3433 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_call_method+0xdc) [0x7441be9aeeec] vm_insnhelper.c:3537 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(vm_exec_core+0x1aac) [0x7441be9a8cac] vm_insnhelper.c:4516 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_vm_exec+0x14c) [0x7441be9acfdc] vm.c:2169 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_iseq_eval_main+0xf0) [0x7441be9b0d50] vm.c:2417 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(rb_ec_exec_node+0xb8) [0x7441be74a218] eval.c:317 /home/jaruga/git/ruby/ruby/libruby.so.3.1.0(ruby_run_node+0x7c) [0x7441be74e94c] eval.c:375 /home/jaruga/git/ruby/ruby/ruby(main+0x90) [0xa1b10ce0bb0] ./main.c:47 ... make: *** [uncommon.mk:802: yes-test-all] Aborted (core dumped) 

$ make test-all TESTOPTS="-n test_compact_count" TESTS=test/ruby/test_gc_compact.rb ... # Running tests: [1/1] TestGCCompact#test_compact_count<internal:gc>:213: [BUG] Couldn't protect page 0x00000f8747228000 ruby 3.1.0dev (2021-05-19T05:24:01Z master adcbae8d49) [powerpc64le-linux] -- Control frame information ----------------------------------------------- c:0031 p:0003 s:0174 e:000173 METHOD <internal:gc>:213 <internal:gc>:213: [BUG] Couldn't unprotect page 0x00000f8747234000 ruby 3.1.0dev (2021-05-19T05:24:01Z master adcbae8d49) [powerpc64le-linux] -- Control frame information ----------------------------------------------- c:0031 p:0003 s:0174 e:000173 METHOD <internal:gc>:213 <internal:gc>:213: [BUG] Segmentation fault at 0x00000f8747236360 ruby 3.1.0dev (2021-05-19T05:24:01Z master adcbae8d49) [powerpc64le-linux] -- Control frame information ----------------------------------------------- c:0031 p:0003 s:0174 e:000173 METHOD <internal:gc>:213 make: *** [uncommon.mk:802: yes-test-all] Segmentation fault (core dumped)