Issue #19994 has been updated by kjtsanaktsidis (KJ Tsanaktsidis). OK, I made a bit of progress - I was able to get the repro working with ASAN, and it spat out this likely looking memory error: ``` kj@kj-thinkpad ruby % installed~/bin/ruby ~/repro.rb ================================================================= ==54413==ERROR: AddressSanitizer: use-after-poison on address 0x7f236e8cabc0 at pc 0x55c143ff9e67 bp 0x7fffe44c1630 sp 0x7fffe44c1628 READ of size 8 at 0x7f236e8cabc0 thread T0 #0 0x55c143ff9e66 in vm_search_method_fastpath /home/kj/ruby/./vm_insnhelper.c:2222:13 #1 0x55c143ff9e66 in vm_sendish /home/kj/ruby/./vm_insnhelper.c:5581:27 #2 0x55c14400801e in vm_exec_core /home/kj/ruby/insns.def:802:11 #3 0x55c143ffa612 in rb_vm_exec /home/kj/ruby/vm.c:2472:22 #4 0x55c14408b97e in invoke_block /home/kj/ruby/vm.c:1497:12 #5 0x55c14408adb5 in invoke_iseq_block_from_c /home/kj/ruby/vm.c:1567:16 #6 0x55c14408adb5 in invoke_block_from_c_bh /home/kj/ruby/vm.c:1585:20 #7 0x55c14402b062 in vm_yield_with_cref /home/kj/ruby/vm.c:1622:12 #8 0x55c144087d30 in vm_yield /home/kj/ruby/vm.c:1630:12 #9 0x55c144026199 in rb_yield_0 /home/kj/ruby/./vm_eval.c:1362:12 #10 0x55c1440262e0 in rb_yield /home/kj/ruby/./vm_eval.c:1378:16 #11 0x55c14425df1f in rb_ary_each /home/kj/ruby/array.c:2532:9 #12 0x55c14407d7e8 in ractor_safe_call_cfunc_0 /home/kj/ruby/./vm_insnhelper.c:3320:12 #13 0x55c1440608b8 in vm_call_cfunc_with_frame_ /home/kj/ruby/./vm_insnhelper.c:3504:11 #14 0x55c14406111a in vm_call_cfunc_with_frame /home/kj/ruby/./vm_insnhelper.c:3532:12 #15 0x55c143ff9f44 in vm_sendish /home/kj/ruby/./vm_insnhelper.c:5582:15 #16 0x55c14400801e in vm_exec_core /home/kj/ruby/insns.def:802:11 #17 0x55c143ffa612 in rb_vm_exec /home/kj/ruby/vm.c:2472:22 #18 0x55c14408b97e in invoke_block /home/kj/ruby/vm.c:1497:12 #19 0x55c14408adb5 in invoke_iseq_block_from_c /home/kj/ruby/vm.c:1567:16 #20 0x55c14408adb5 in invoke_block_from_c_bh /home/kj/ruby/vm.c:1585:20 #21 0x55c14402b062 in vm_yield_with_cref /home/kj/ruby/vm.c:1622:12 #22 0x55c14402b9dc in yield_under /home/kj/ruby/./vm_eval.c:1949:12 #23 0x55c14402b271 in specific_eval /home/kj/ruby/./vm_eval.c:1990:16 #24 0x55c14402e132 in rb_mod_module_eval_internal /home/kj/ruby/./vm_eval.c:2120:12 #25 0x55c14407d7af in ractor_safe_call_cfunc_m1 /home/kj/ruby/./vm_insnhelper.c:3313:12 #26 0x55c1440608b8 in vm_call_cfunc_with_frame_ /home/kj/ruby/./vm_insnhelper.c:3504:11 #27 0x55c14406111a in vm_call_cfunc_with_frame /home/kj/ruby/./vm_insnhelper.c:3532:12 #28 0x55c143ff9f44 in vm_sendish /home/kj/ruby/./vm_insnhelper.c:5582:15 #29 0x55c14400801e in vm_exec_core /home/kj/ruby/insns.def:802:11 #30 0x55c143ffa612 in rb_vm_exec /home/kj/ruby/vm.c:2472:22 #31 0x55c1440830de in vm_call0_body /home/kj/ruby/./vm_eval.c:229:20 #32 0x55c14402344f in vm_call0_cc /home/kj/ruby/./vm_eval.c:110:12 #33 0x55c144024d4b in rb_funcallv_scope /home/kj/ruby/./vm_eval.c:1065:16 #34 0x55c14401d4b0 in rb_funcallv /home/kj/ruby/./vm_eval.c:1080:12 #35 0x55c144025ac3 in rb_funcall /home/kj/ruby/./vm_eval.c:1137:12 #36 0x55c143b1f6da in rb_mod_include /home/kj/ruby/eval.c:1159:9 #37 0x55c14407d7af in ractor_safe_call_cfunc_m1 /home/kj/ruby/./vm_insnhelper.c:3313:12 #38 0x55c1440608b8 in vm_call_cfunc_with_frame_ /home/kj/ruby/./vm_insnhelper.c:3504:11 #39 0x55c14406111a in vm_call_cfunc_with_frame /home/kj/ruby/./vm_insnhelper.c:3532:12 #40 0x55c143ff9f44 in vm_sendish /home/kj/ruby/./vm_insnhelper.c:5582:15 #41 0x55c14400801e in vm_exec_core /home/kj/ruby/insns.def:802:11 #42 0x55c143ffa612 in rb_vm_exec /home/kj/ruby/vm.c:2472:22 #43 0x55c144036ecf in rb_iseq_eval /home/kj/ruby/vm.c:2727:11 #44 0x55c143c479e8 in load_iseq_eval /home/kj/ruby/load.c:739:5 #45 0x55c143c3f680 in require_internal /home/kj/ruby/load.c:1247:21 #46 0x55c143c3caf0 in rb_require_string_internal /home/kj/ruby/load.c:1346:18 #47 0x55c143c3c99b in rb_require_string /home/kj/ruby/load.c:1339:12 #48 0x55c143c3c808 in rb_f_require /home/kj/ruby/load.c:981:12 #49 0x55c14407d851 in ractor_safe_call_cfunc_1 /home/kj/ruby/./vm_insnhelper.c:3327:12 #50 0x55c1440608b8 in vm_call_cfunc_with_frame_ /home/kj/ruby/./vm_insnhelper.c:3504:11 #51 0x55c14406111a in vm_call_cfunc_with_frame /home/kj/ruby/./vm_insnhelper.c:3532:12 #52 0x55c14405fab9 in vm_call_cfunc_other /home/kj/ruby/./vm_insnhelper.c:3558:16 #53 0x55c14404954a in vm_call_cfunc /home/kj/ruby/./vm_insnhelper.c:3640:12 #54 0x55c144047465 in vm_call_method_each_type /home/kj/ruby/./vm_insnhelper.c:4418:16 #55 0x55c14404ba9e in vm_call_alias /home/kj/ruby/./vm_insnhelper.c:3874:12 #56 0x55c143ff9f44 in vm_sendish /home/kj/ruby/./vm_insnhelper.c:5582:15 #57 0x55c1440085af in vm_exec_core /home/kj/ruby/insns.def:822:11 #58 0x55c143ffa612 in rb_vm_exec /home/kj/ruby/vm.c:2472:22 #59 0x55c1440830de in vm_call0_body /home/kj/ruby/./vm_eval.c:229:20 #60 0x55c14402344f in vm_call0_cc /home/kj/ruby/./vm_eval.c:110:12 #61 0x55c144024d4b in rb_funcallv_scope /home/kj/ruby/./vm_eval.c:1065:16 #62 0x55c14401d4b0 in rb_funcallv /home/kj/ruby/./vm_eval.c:1080:12 #63 0x55c144025ac3 in rb_funcall /home/kj/ruby/./vm_eval.c:1137:12 #64 0x55c143ff0663 in autoload_feature_require /home/kj/ruby/variable.c:2898:20 #65 0x55c143fe790f in autoload_try_load /home/kj/ruby/variable.c:2912:20 #66 0x55c143b1da61 in rb_ensure /home/kj/ruby/eval.c:1009:18 #67 0x55c143fe6e3d in rb_autoload_load /home/kj/ruby/variable.c:2973:20 #68 0x55c143ff1a5f in rb_const_search_from /home/kj/ruby/variable.c:3075:17 #69 0x55c143fda9b7 in rb_const_search /home/kj/ruby/variable.c:3097:13 #70 0x55c143fe8660 in rb_const_get_0 /home/kj/ruby/variable.c:3024:15 #71 0x55c143fe87f8 in rb_public_const_get_from /home/kj/ruby/variable.c:3126:12 #72 0x55c143ff5654 in vm_get_ev_const /home/kj/ruby/./vm_insnhelper.c:1100:20 #73 0x55c143ffc68d in vm_get_ev_const_chain /home/kj/ruby/./vm_insnhelper.c:1124:15 #74 0x55c143ffc45f in rb_vm_opt_getconstant_path /home/kj/ruby/./vm_insnhelper.c:5890:15 #75 0x55c143fffbe9 in vm_exec_core /home/kj/ruby/insns.def:263:11 #76 0x55c144036de4 in vm_exec_loop /home/kj/ruby/vm.c:2499:22 #77 0x55c143ffa698 in rb_vm_exec /home/kj/ruby/vm.c:2478:18 #78 0x55c14403725f in rb_iseq_eval_main /home/kj/ruby/vm.c:2738:11 #79 0x55c143b19791 in rb_ec_exec_node /home/kj/ruby/eval.c:287:9 #80 0x55c143b191bb in ruby_run_node /home/kj/ruby/eval.c:328:30 #81 0x55c143b119bc in rb_main /home/kj/ruby/./main.c:39:12 #82 0x55c143b117c9 in main /home/kj/ruby/./main.c:58:12 #83 0x7f23d4a01b89 in __libc_start_call_main /usr/src/debug/glibc-2.37-13.fc38.x86_64/csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #84 0x7f23d4a01c4a in __libc_start_main@GLIBC_2.2.5 /usr/src/debug/glibc-2.37-13.fc38.x86_64/csu/../csu/libc-start.c:360:3 #85 0x55c143a3b0a4 in _start (/home/kj/ruby/installed~/bin/ruby+0x1440a4) (BuildId: d2084514ac5692bc3b08bda30312213a34a043bb) Address 0x7f236e8cabc0 is a wild pointer inside of access range of size 0x000000000008. SUMMARY: AddressSanitizer: use-after-poison /home/kj/ruby/./vm_insnhelper.c:2222:13 in vm_search_method_fastpath Shadow bytes around the buggy address: 0x7f236e8ca900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7f236e8ca980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7f236e8caa00: 00 00 00 00 00 00 00 00 00 00 00 f7 00 00 00 00 0x7f236e8caa80: f7 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7f236e8cab00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =>0x7f236e8cab80: 00 00 00 00 00 00 00 00[f7]00 00 00 00 00 00 00 0x7f236e8cac00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7f236e8cac80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7f236e8cad00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7f236e8cad80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7f236e8cae00: 00 00 00 f7 00 00 00 00 f7 00 00 00 00 00 00 00 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==54413==ABORTING zsh: IOT instruction (core dumped) installed~/bin/ruby ~/repro.rb ``` I should be able to tug on this a bit more in the next couple of days. ---------------------------------------- Bug #19994: Seemingly require causes segfault?? https://bugs.ruby-lang.org/issues/19994#change-105263 * Author: mtasaka (Mamoru Tasaka) * Status: Open * Priority: Normal * ruby -v: ruby 3.3.0dev (2023-11-08 master c8d4b103a9) [x86_64-linux] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- With commit:c8d4b103a9 , trying to execute stringex-2.8.6 https://github.com/rsl/stringex/releases/tag/v2.8.6 testsuite seems to cause ruby segfault. Trying to minimize code, the following causes segfault for almost all time (about 90%): ``` require 'test/unit' require 'active_record' ActiveRecord::Base.establish_connection adapter: "sqlite3", database: ":memory:" ``` (strangely, with commenting out the first line i.e. `require 'test/unit'` segfault no longer ocuurs...) Backtrace: ``` Thread 1 "ruby-mri" received signal SIGSEGV, Segmentation fault. vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670b78, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3499 3499 int len = cfunc->argc; Missing separate debuginfos, use: dnf debuginfo-install glibc-2.38.9000-17.fc40.x86_64 gmp-6.2.1-5.fc39.x86_64 libgcc-13.2.1-4.fc40.x86_64 libxcrypt-4.4.36-2.fc39.x86_64 libyaml-0.2.5-12.fc39.x86_64 openssl-libs-3.1.4-1.fc40.x86_64 rubygem-json-2.6.3-204.fc40.140.x86_64 rubygem-sqlite3-1.6.1-2.fc40.140.x86_64 sqlite-libs-3.44.0-1.fc40.x86_64 zlib-1.2.13-5.fc40.x86_64 (gdb) bt #0 vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670b78, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3499 #1 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #2 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #3 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #4 0x00007ffff7c61463 in vm_yield_with_cref (is_lambda=0, cref=0x0, kw_splat=0, argv=0x0, argc=0, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:1622 #5 vm_yield (kw_splat=0, argv=0x0, argc=0, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:1630 #6 rb_yield_0 (argv=0x0, argc=0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_eval.c:1362 #7 rb_yield_values2 (argc=0, argv=0x0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_eval.c:1408 #8 0x00007ffff7ad3b4f in rb_ensure (b_proc=0x7fffde0fb990 <monitor_sync_body>, data1=140736888155080, e_proc=0x7fffde0fb6e0 <monitor_sync_ensure>, data2=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/eval.c:1009 #9 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670c20, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #10 0x00007ffff7c56641 in vm_sendish (ec=0x55555555d1c0, reg_cfp=0x7ffff7670c20, cd=<optimized out>, block_handler=<optimized out>, method_explorer=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_callinfo.h:407 #11 0x00007ffff7c5d43f in vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:802 #12 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #13 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736887218320, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #14 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736887218320) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #15 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #16 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670cc8, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #17 0x00007ffff7c57b1f in vm_call_alias (ec=0x55555555d1c0, cfp=0x7ffff7670cc8, calling=0x7fffffffce00) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #18 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #19 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #20 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #21 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736885373720, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #22 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736885373720) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #23 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #24 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670d70, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #25 0x00007ffff7c57b1f in vm_call_alias (ec=0x55555555d1c0, cfp=0x7ffff7670d70, calling=0x7fffffffd3f0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #26 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #27 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #28 0x00007ffff7c73bfe in vm_exec_loop (result=<optimized out>, tag=0x7fffffffd480, state=<optimized out>, ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2499 #29 rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2478 #30 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736888126320, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #31 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736888126320) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #32 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #33 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670e18, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #34 0x00007ffff7c57b1f in vm_call_alias (ec=0x55555555d1c0, cfp=0x7ffff7670e18, calling=0x7fffffffd9e0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #35 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 --Type <RET> for more, q to quit, c to continue without paging-- #36 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #37 0x00007ffff7c739dd in rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2472 #38 0x00007ffff7b358fb in require_internal (ec=ec@entry=0x55555555d1c0, fname=<optimized out>, fname@entry=140736882997040, exception=exception@entry=1, warn=false) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1247 #39 0x00007ffff7b35e4e in rb_require_string_internal (fname=140736882997040) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1346 #40 0x00007ffff7b35f08 in rb_require_string (fname=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/load.c:1339 #41 0x00007ffff7c540c7 in vm_call_cfunc_with_frame_ (ec=0x55555555d1c0, reg_cfp=0x7ffff7670ec0, calling=<optimized out>, argc=<optimized out>, argv=<optimized out>, stack_bottom=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3503 #42 0x00007ffff7c57193 in vm_call_alias (calling=0x7fffffffe040, cfp=0x7ffff7670ec0, ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:3873 #43 vm_call_method_each_type (ec=0x55555555d1c0, cfp=0x7ffff7670ec0, calling=0x7fffffffe040) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:4475 #44 0x00007ffff7c5b62c in vm_sendish (method_explorer=<optimized out>, block_handler=<optimized out>, cd=<optimized out>, reg_cfp=<optimized out>, ec=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm_insnhelper.c:5581 #45 vm_exec_core (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/redhat-linux-build/insns.def:822 #46 0x00007ffff7c73bfe in vm_exec_loop (result=<optimized out>, tag=0x7fffffffe0d0, state=<optimized out>, ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2499 #47 rb_vm_exec (ec=0x55555555d1c0) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/vm.c:2478 #48 0x00007ffff7adbc0a in rb_ec_exec_node (ec=ec@entry=0x55555555d1c0, n=n@entry=0x7fffdc3de580) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/eval.c:287 #49 0x00007ffff7addb03 in ruby_run_node (n=0x7fffdc3de580) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/eval.c:328 #50 0x0000555555555197 in rb_main (argv=0x7fffffffe4a8, argc=2) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/main.c:39 #51 main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/ruby-3.3.0~20231108.0143gitc8d4b103a9-183.fc40.285.x86_64/main.c:58 (gdb) p cfunc $1 = (const rb_method_cfunc_t *) 0xb (gdb) deta Detaching from program: /usr/bin/ruby-mri, process 345 /usr/share/rubygems/rubygems.rb:1220: [BUG] Segmentation fault at 0x000000000000001b ruby 3.3.0dev (2023-11-08 master c8d4b103a9) [x86_64-linux] -- Control frame information ----------------------------------------------- c:0022 p:---- s:0126 e:000125 CFUNC c:0021 p:0007 s:0123 e:000120 METHOD /usr/share/rubygems/rubygems.rb:1220 c:0020 p:0015 s:0115 e:000114 BLOCK <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:42 [FINISH] c:0019 p:---- s:0104 e:000103 [Inferior 1 (process 345) detached] CFUNC :synchronize c:0018 p:0017 s:0100 e:000099 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:39 c:0017 p:0006 s:0094 e:000093 TOP /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/pragmas.rb:1 [FINISH] c:0016 p:---- s:0091 e:000090 CFUNC :require c:0015 p:0023 s:0086 e:000085 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0014 p:0020 s:0080 e:000079 TOP /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/database.rb:3 [FINISH] c:0013 p:---- s:0077 e:000076 CFUNC :require c:0012 p:0023 s:0072 e:000071 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0011 p:0033 s:0066 e:000065 TOP /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3.rb:9 [FINISH] c:0010 p:---- s:0063 e:000062 CFUNC :require c:0009 p:0023 s:0058 e:000057 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0008 p:0078 s:0052 e:000051 TOP /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/sqlite3_adapter.rb:14 [FINISH] c:0007 p:---- s:0049 e:000048 CFUNC :require c:0006 p:0023 s:0044 e:000043 METHOD <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128 c:0005 p:0051 s:0038 e:000037 METHOD /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:268 c:0004 p:0066 s:0027 e:000026 METHOD /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:129 c:0003 p:0049 s:0013 e:000012 METHOD /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_handling.rb:52 c:0002 p:0020 s:0006 e:000005 EVAL ./trial.rb:4 [FINISH] c:0001 p:0000 s:0003 E:0018a0 DUMMY [FINISH] -- Ruby level backtrace information ---------------------------------------- ./trial.rb:4:in `<main>' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_handling.rb:52:in `establish_connection' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:129:in `establish_connection' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/abstract/connection_handler.rb:268:in `resolve_pool_config' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/activerecord-7.0.8/lib/active_record/connection_adapters/sqlite3_adapter.rb:14:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3.rb:9:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/database.rb:3:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:128:in `require' /usr/share/gems/gems/sqlite3-1.6.1/lib/sqlite3/pragmas.rb:1:in `<top (required)>' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:39:in `require' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:39:in `synchronize' <internal:/usr/share/rubygems/rubygems/core_ext/kernel_require.rb>:42:in `block in require' /usr/share/rubygems/rubygems.rb:1220:in `find_unresolved_default_spec' ``` Looks like `cfunc` points to invalid address. Currently I am unable to minimize the code further... -- https://bugs.ruby-lang.org/