Issue #20727 has been updated by k0kubun (Takashi Kokubun). Assignee set to yjit ---------------------------------------- Bug #20727: YJIT segmentation fault inside of invalidate_block_version https://bugs.ruby-lang.org/issues/20727#change-109744 * Author: jhawthorn (John Hawthorn) * Status: Open * Assignee: yjit * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- For a while we've been seeing an occasional segfault in production inside of YJIT's invalidation code. It seems to happen most often when a invalidation on a widely used CME. ``` [BUG] Segmentation fault at 0x0000000000000014" "ruby 3.3.5 (2024-09-04 revision 4f143c3038) +YJIT [x86_64-linux]" null "-- Control frame information -----------------------------------------------" "c:0174 p:---- s:1247 e:001246 CFUNC :extend_object" "c:0173 p:---- s:1244 e:001243 CFUNC :extend" "c:0172 p:0049 s:1239 e:001238 METHOD /build/vendor/gems/3.3.5/ruby/3.3.0/gems/activerecord-8.0.0.alpha.6395186/lib/active_record/relation/query_methods.rb:1467" "c:0171 p:0024 s:1233 e:001232 METHOD /build/vendor/gems/3.3.5/ruby/3.3.0/gems/activerecord-8.0.0.alpha.6395186/lib/active_record/relation/query_methods.rb:1456" "c:0170 p:0055 s:1227 e:001226 METHOD /build/vendor/gems/3.3.5/ruby/3.3.0/gems/will_paginate-4.0.1/lib/will_paginate/active_record.rb:170" "c:0169 p:0076 s:1219 e:001218 METHOD /build/vendor/gems/3.3.5/ruby/3.3.0/gems/will_paginate-4.0.1/lib/will_paginate/active_record.rb:154" -----8<----- null "-- Threading information ---------------------------------------------------" "Total ractor count: 1" "Ruby thread count for this ractor: 19" null "-- Machine register context ------------------------------------------------" " RIP: 0x0000563c0aaccef7 RBP: 0x00007f481524f5f0 RSP: 0x00007fffe8631d70" " RAX: 0x0000000000000014 RBX: 0x0000000000000010 RCX: 0x000000000000000e" " RDX: 0x0000000002ff9bab RDI: 0x00007f4839357520 RSI: 0x0000000000000008" " R8: 0x00007f480cc0f5e0 R9: 0x0000000000000800 R10: 0x00007f48af4008c0" " R11: 0x0000000000000060 R12: 0x0000563c0ad93108 R13: 0x00007f4816abe260" " R14: 0x000000000000000e R15: 0x0000000002f9d50f EFL: 0x0000000000010206" null "-- C level backtrace information -------------------------------------------" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(rb_print_backtrace+0x11) [0x563c0a9ff8df] vm_dump.c:820" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(rb_vm_bugreport) vm_dump.c:1151" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(rb_bug_for_fatal_signal+0xfc) [0x563c0abc2a1c] error.c:1065" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(sigsegv+0x4d) [0x563c0a94e02d] signal.c:926" "/lib/x86_64-linux-gnu/libpthread.so.0(__restore_rt+0x0) [0x7f48afba1420]" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(0x563c0aaccef7) [0x563c0aaccef7]" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby({closure#0}) yjit/src/core.rs:718" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(invalidate_block_version) yjit/src/core.rs:3237" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby({closure#0}+0xe6) [0x563c0aaf1586] yjit/src/invariants.rs:246" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(do_call<yjit::invariants::rb_yjit_cme_invalidate::{closure_env#0}, ()>) /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(try<(), yjit::invariants::rb_yjit_cme_invalidate::{closure_env#0}>) /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(catch_unwind<yjit::invariants::rb_yjit_cme_invalidate::{closure_env#0}, ()>+0x8) [0x563c0aae2d68] /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/s> "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(with_vm_lock<yjit::invariants::rb_yjit_cme_invalidate::{closure_env#0}, ()>) yjit/src/cruby.rs:646" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(rb_yjit_cme_invalidate+0x5c) [0x563c0aae6e0c] yjit/src/invariants.rs:243" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(vm_cme_invalidate+0x12) [0x563c0a9d78bd] vm_method.c:126" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(clear_method_cache_by_id_in_class) vm_method.c:240" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(clear_module_cache_i+0x13) [0x563c0ab2d263] class.c:1234" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(rb_id_table_foreach+0x84) [0x563c0a9891c4] id_table.c:278" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(do_include_modules_at+0x16a) [0x563c0ab31a0a] class.c:1314" "/build/vendor/ruby/4f143c30380724f14341665b622148b0646138fe/bin/ruby(include_modules_at+0x1a) [0x563c0ab31f61] class.c:1370" -----8<----- ``` -- https://bugs.ruby-lang.org/