Segmentation Fault Crash (SIGSEGV) with watcher.node in frame #0 - #4 #206
Description
The following stack trace has been captured from a crash in vscode-server, using watcher v2.5.1
Unfortunately, I can't share a repro or the coredump file itself.
It seems like it's occurring very close to process start.
Backtrace
(lldb) target create --core "/var/tmp/cores/node.1767897"
Core file '/var/tmp/cores/node.1767897' (x86_64) was loaded.
bt
(lldb) bt
* thread #1, name = 'node', stop reason = SIGSEGV: sent by tkill system call (sender pid=1767897, uid=227932)
* frame #0: 0x00007fcf31c3a31b watcher.node`std::_Hashtable<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const, std::weak_ptr<DirTree>>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const, std::weak_ptr<DirTree>>>, std::__detail::_Select1st, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true>>::_M_erase(std::integral_constant<bool, true>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&) (.isra.155.constprop.176) + 75
frame #1: 0x00007fcf31c3c58d watcher.node`std::_Sp_counted_deleter<DirTree*, DirTreeDeleter, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_M_dispose() + 61
frame #2: 0x00007fcf31c62387 watcher.node`std::_Sp_counted_ptr_inplace<InotifySubscription, std::allocator<InotifySubscription>, (__gnu_cxx::_Lock_policy)2>::_M_dispose() + 231
frame #3: 0x00007fcf31c5f5a0 watcher.node`InotifyBackend::~InotifyBackend() + 256
frame #4: 0x00007fcf31c39b2a watcher.node`std::unordered_map<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>, std::shared_ptr<Backend>, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const, std::shared_ptr<Backend>>>>::~unordered_map() + 298
frame #5: 0x00007fcf5aa412dd libc.so.6`__run_exit_handlers + 413
frame #6: 0x00007fcf5aa41430 libc.so.6`exit + 32
frame #7: 0x0000000000bd946f node`node::DefaultProcessExitHandlerInternal(node::Environment*, node::ExitCode) + 111
frame #8: 0x0000000000c37f4f node`node::Environment::Exit(node::ExitCode) + 159
frame #9: 0x0000000000f69f9f node`v8::internal::FunctionCallbackArguments::Call(v8::internal::CallHandlerInfo) + 303
frame #10: 0x0000000000f6a80d node`v8::internal::MaybeHandle<v8::internal::Object> v8::internal::(anonymous namespace)::HandleApiCallHelper<false>(v8::internal::Isolate*, v8::internal::Handle<v8::internal::HeapObject>, v8::internal::Handle<v8::internal::FunctionTemplateInfo>, v8::internal::Handle<v8::internal::Object>, unsigned long*, int) + 141
frame #11: 0x0000000000f6acd5 node`v8::internal::Builtin_HandleApiCall(int, unsigned long*, v8::internal::Isolate*) + 277
frame #12: 0x0000000001975df6 node`Builtins_CEntry_Return1_ArgvOnStack_BuiltinExit + 54
frame #13: 0x00000000018e7d1c node`Builtins_InterpreterEntryTrampoline + 220
frame #14: 0x00000000018e7d1c node`Builtins_InterpreterEntryTrampoline + 220
frame #15: 0x00007fcf3402b595
frame #16: 0x00000000018e7d1c node`Builtins_InterpreterEntryTrampoline + 220
frame #17: 0x00007fcf3402b72b
frame #18: 0x00000000018e7d1c node`Builtins_InterpreterEntryTrampoline + 220
frame #19: 0x00007fcf34030456
frame #20: 0x00000000018e60dc node`Builtins_JSEntryTrampoline + 92
frame #21: 0x00000000018e5e03 node`Builtins_JSEntry + 131
frame #22: 0x000000000106224b node`v8::internal::(anonymous namespace)::Invoke(v8::internal::Isolate*, v8::internal::(anonymous namespace)::InvokeParams const&) + 299
frame #23: 0x00000000010632e4 node`v8::internal::Execution::Call(v8::internal::Isolate*, v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Object>, int, v8::internal::Handle<v8::internal::Object>*) + 100
frame #24: 0x0000000000f259bd node`v8::Function::Call(v8::Local<v8::Context>, v8::Local<v8::Value>, int, v8::Local<v8::Value>*) + 333
frame #25: 0x0000000000bd2daf node`node::InternalCallbackScope::Close() + 655
frame #26: 0x0000000000bd312b node`node::InternalMakeCallback(node::Environment*, v8::Local<v8::Object>, v8::Local<v8::Object>, v8::Local<v8::Function>, int, v8::Local<v8::Value>*, node::async_context) + 619
frame #27: 0x0000000000bea18f node`node::AsyncWrap::MakeCallback(v8::Local<v8::Function>, int, v8::Local<v8::Value>*) + 127
frame #28: 0x0000000000de1c37 node`node::StreamBase::CallJSOnreadMethod(long, v8::Local<v8::ArrayBuffer>, unsigned long, node::StreamBase::StreamBaseJSChecks) + 167
frame #29: 0x0000000000de20b4 node`node::EmitToJSStreamListener::OnStreamRead(long, uv_buf_t const&) + 676
frame #30: 0x0000000000de993f node`node::LibuvStreamWrap::OnUvRead(long, uv_buf_t const*) + 143
frame #31: 0x0000000000de9d5a node`node::LibuvStreamWrap::ReadStart()::'lambda0'(uv_stream_s*, long, uv_buf_t const*)::_FUN(uv_stream_s*, long, uv_buf_t const*) + 90
frame #32: 0x00000000018cff18 node`uv__stream_eof(buf=0x00007ffecb944710, stream=0x0000000005851990) at stream.c:937:3
frame #33: 0x00000000018cfec8 node`uv__read(stream=0x0000000005851990) at stream.c:1106:7
frame #34: 0x00000000018d00a0 node`uv__stream_io(loop=<unavailable>, w=0x0000000005851a18, events=17) at stream.c:1203:5
frame #35: 0x00000000018d7b0b node`uv__io_poll(loop=0x000000000561ac80, timeout=<unavailable>) at linux.c:1485:11
frame #36: 0x00000000018c3db7 node`uv_run(loop=<unavailable>, mode=UV_RUN_DEFAULT) at core.c:447:5
frame #37: 0x0000000000bd3be6 node`node::SpinEventLoopInternal(node::Environment*) + 342
frame #38: 0x0000000000d151f4 node`node::NodeMainInstance::Run(node::ExitCode*, node::Environment*) (.part.0) + 148
frame #39: 0x0000000000d15c8d node`node::NodeMainInstance::Run() + 205
frame #40: 0x0000000000c7d85f node`node::Start(int, char**) + 1423
frame #41: 0x00007fcf5aa295d0 libc.so.6`__libc_start_call_main + 128
frame #42: 0x00007fcf5aa29680 libc.so.6`__libc_start_main@@GLIBC_2.34 + 128
frame #43: 0x0000000000bd187e node`_start + 46