Assertion failed ../deps/uv/src/unix/stream.c, line 1563

[mhhf]

I cannot really provide reproducible code since this error happens in a non deterministically but here some details:

$ node app.js
Assertion failed: (handle->type == UV_TCP || handle->type == UV_TTY || handle->type == UV_NAMED_PIPE), function uv___stream_fd, file ../deps/uv/src/unix/stream.c, line 1563.

$ uname -a
Darwin Deniss-MacBook-Pro.local 15.6.0 Darwin Kernel Version 15.6.0: Thu Jun 23 18:25:34 PDT 2016; root:xnu-3248.60.10~1/RELEASE_X86_64 x86_64

Tested on node v6.4.0/ 6.3.1/ 6.2.2

$ lldb node app.js
(lldb) target create "node"
Current executable set to 'node' (x86_64).
(lldb) settings set -- target.run-args  "app.js"
(lldb) run
Process 68530 launched: '/usr/local/bin/node' (x86_64)

Assertion failed: (handle->type == UV_TCP || handle->type == UV_TTY || handle->type == UV_NAMED_PIPE), function uv___stream_fd, file ../deps/uv/src/unix/stream.c, line 1563.
Process 68530 stopped
* thread #1: tid = 0x6c1407, 0x00007fff8d388f06 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
    frame #0: 0x00007fff8d388f06 libsystem_kernel.dylib`__pthread_kill + 10
libsystem_kernel.dylib`__pthread_kill:
->  0x7fff8d388f06 <+10>: jae    0x7fff8d388f10            ; <+20>
    0x7fff8d388f08 <+12>: movq   %rax, %rdi
    0x7fff8d388f0b <+15>: jmp    0x7fff8d3837cd            ; cerror_nocancel
    0x7fff8d388f10 <+20>: retq
(lldb) bt
* thread #1: tid = 0x6c1407, 0x00007fff8d388f06 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
  * frame #0: 0x00007fff8d388f06 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00007fff8b08d4ec libsystem_pthread.dylib`pthread_kill + 90
    frame #2: 0x00007fff914cf6df libsystem_c.dylib`abort + 129
    frame #3: 0x00007fff91496dd8 libsystem_c.dylib`__assert_rtn + 321
    frame #4: 0x0000000100978b81 node`uv___stream_fd + 85
    frame #5: 0x0000000100977bba node`uv__stream_io + 1655
    frame #6: 0x000000010097f198 node`uv__io_poll + 1621
    frame #7: 0x0000000100970277 node`uv_run + 321
    frame #8: 0x00000001007e97ba node`node::Start(int, char**) + 642
    frame #9: 0x0000000100001034 node`start + 52
(lldb) bt all
* thread #1: tid = 0x6c1407, 0x00007fff8d388f06 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
  * frame #0: 0x00007fff8d388f06 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00007fff8b08d4ec libsystem_pthread.dylib`pthread_kill + 90
    frame #2: 0x00007fff914cf6df libsystem_c.dylib`abort + 129
    frame #3: 0x00007fff91496dd8 libsystem_c.dylib`__assert_rtn + 321
    frame #4: 0x0000000100978b81 node`uv___stream_fd + 85
    frame #5: 0x0000000100977bba node`uv__stream_io + 1655
    frame #6: 0x000000010097f198 node`uv__io_poll + 1621
    frame #7: 0x0000000100970277 node`uv_run + 321
    frame #8: 0x00000001007e97ba node`node::Start(int, char**) + 642
    frame #9: 0x0000000100001034 node`start + 52

  thread #2: tid = 0x6c141d, 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #0: 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x000000010097a709 node`uv_sem_wait + 16
    frame #2: 0x00000001007ea17a node`node::DebugSignalThreadMain(void*) + 49
    frame #3: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #4: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #5: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #3: tid = 0x6c141e, 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10, name = 'V8 WorkerThread'
    frame #0: 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x00000001009828d7 node`v8::base::Semaphore::Wait() + 23
    frame #2: 0x00000001008484a9 node`v8::platform::TaskQueue::GetNext() + 57
    frame #3: 0x00000001008486ab node`v8::platform::WorkerThread::Run() + 43
    frame #4: 0x00000001009845d7 node`v8::base::ThreadEntry(void*) + 87
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #4: tid = 0x6c141f, 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10, name = 'V8 WorkerThread'
    frame #0: 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x00000001009828d7 node`v8::base::Semaphore::Wait() + 23
    frame #2: 0x00000001008484a9 node`v8::platform::TaskQueue::GetNext() + 57
    frame #3: 0x00000001008486ab node`v8::platform::WorkerThread::Run() + 43
    frame #4: 0x00000001009845d7 node`v8::base::ThreadEntry(void*) + 87
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #5: tid = 0x6c1420, 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10, name = 'V8 WorkerThread'
    frame #0: 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x00000001009828d7 node`v8::base::Semaphore::Wait() + 23
    frame #2: 0x00000001008484a9 node`v8::platform::TaskQueue::GetNext() + 57
    frame #3: 0x00000001008486ab node`v8::platform::WorkerThread::Run() + 43
    frame #4: 0x00000001009845d7 node`v8::base::ThreadEntry(void*) + 87
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #6: tid = 0x6c1421, 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10, name = 'V8 WorkerThread'
    frame #0: 0x00007fff8d382fae libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x00000001009828d7 node`v8::base::Semaphore::Wait() + 23
    frame #2: 0x00000001008484a9 node`v8::platform::TaskQueue::GetNext() + 57
    frame #3: 0x00000001008486ab node`v8::platform::WorkerThread::Run() + 43
    frame #4: 0x00000001009845d7 node`v8::base::ThreadEntry(void*) + 87
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #7: tid = 0x6c1436, 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff8b08b728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010097a82b node`uv_cond_wait + 9
    frame #3: 0x000000010096e313 node`worker + 227
    frame #4: 0x000000010097a494 node`uv__thread_start + 25
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #8: tid = 0x6c1437, 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff8b08b728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010097a82b node`uv_cond_wait + 9
    frame #3: 0x000000010096e313 node`worker + 227
    frame #4: 0x000000010097a494 node`uv__thread_start + 25
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #9: tid = 0x6c1438, 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff8b08b728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010097a82b node`uv_cond_wait + 9
    frame #3: 0x000000010096e313 node`worker + 227
    frame #4: 0x000000010097a494 node`uv__thread_start + 25
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

  thread #10: tid = 0x6c1439, 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #0: 0x00007fff8d388db6 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff8b08b728 libsystem_pthread.dylib`_pthread_cond_wait + 767
    frame #2: 0x000000010097a82b node`uv_cond_wait + 9
    frame #3: 0x000000010096e313 node`worker + 227
    frame #4: 0x000000010097a494 node`uv__thread_start + 25
    frame #5: 0x00007fff8b08a99d libsystem_pthread.dylib`_pthread_body + 131
    frame #6: 0x00007fff8b08a91a libsystem_pthread.dylib`_pthread_start + 168
    frame #7: 0x00007fff8b088351 libsystem_pthread.dylib`thread_start + 13

On Linux machines the same code is causing the message "segmentation fault" (also not deterministically).

I'm using https://github.com/Level/leveldown package which might cause this error since it sometimes happens on reading/writing from the db, but also on totally unrelated function calls.
Also this error could be caused by other packages.

How to debug this further, since I have no Idea which package/ code-fragment is causing this.

[bnoordhuis]

It sounds like memory corruption. Nine times out of ten it's caused by a wayward native module (e.g. leveldown) so try excluding those first. You can try running it under valgrind and see if it complains.

[mhhf]

valgrind gives me the following output, which i cannot really make sense of or infer the causing package:
(run.sh is just a wrapper around env variables and parameters)

$ valgrind --leak-check=yes ./run.sh
valgrind --leak-check=yes ./run.sh
==94144== Memcheck, a memory error detector
==94144== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==94144== Using Valgrind-3.12.0.SVN and LibVEX; rerun with -h for copyright info
==94144== Command: ./run.sh
==94144==

Assertion failed: (handle->type == UV_TCP || handle->type == UV_TTY || handle->type == UV_NAMED_PIPE), function uv___stream_fd, file ../deps/uv/src/unix/stream.c, line 1563.
./run.sh: line 2: 94145 Abort trap: 6           dapple script run B
==94144==
==94144== HEAP SUMMARY:
==94144==     in use at exit: 140,239 bytes in 672 blocks
==94144==   total heap usage: 829 allocs, 157 frees, 160,225 bytes allocated
==94144==
==94144== 231 bytes in 1 blocks are definitely lost in loss record 272 of 312
==94144==    at 0x1000A49FB: malloc (in /usr/local/Cellar/valgrind/HEAD/lib/valgrind/vgpreload_memcheck-amd64-darwin.so)
==94144==    by 0x1002B6AE1: currentlocale (in /usr/lib/system/libsystem_c.dylib)
==94144==    by 0x100029E7C: ??? (in /bin/sh)
==94144==    by 0x10000176F: ??? (in /bin/sh)
==94144==    by 0x1002265AC: start (in /usr/lib/system/libdyld.dylib)
==94144==    by 0x1: ???
==94144==    by 0x10489D9B2: ???
==94144==    by 0x10489D9BA: ???
==94144==
==94144== 2,064 bytes in 1 blocks are possibly lost in loss record 304 of 312
==94144==    at 0x1000A4CC4: malloc_zone_malloc (in /usr/local/Cellar/valgrind/HEAD/lib/valgrind/vgpreload_memcheck-amd64-darwin.so)
==94144==    by 0x1005D7EFD: _objc_copyClassNamesForImage (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005CB182: protocols() (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005CB093: readClass(objc_class*, bool, bool) (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005C8C13: gc_init (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005D024E: objc_initializeClassPair_internal(objc_class*, char const*, objc_class*, objc_class*) (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005DD132: layout_string_create (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005CB83C: realizeClass(objc_class*) (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005CB300: copySwiftV1MangledName(char const*, bool) (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005CB2E9: copySwiftV1MangledName(char const*, bool) (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005CB2E9: copySwiftV1MangledName(char const*, bool) (in /usr/lib/libobjc.A.dylib)
==94144==    by 0x1005CB2E9: copySwiftV1MangledName(char const*, bool) (in /usr/lib/libobjc.A.dylib)
==94144==
==94144== LEAK SUMMARY:
==94144==    definitely lost: 231 bytes in 1 blocks
==94144==    indirectly lost: 0 bytes in 0 blocks
==94144==      possibly lost: 2,064 bytes in 1 blocks
==94144==    still reachable: 117,662 bytes in 481 blocks
==94144==         suppressed: 20,282 bytes in 189 blocks
==94144== Reachable blocks (those to which a pointer was found) are not shown.
==94144== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==94144==
==94144== For counts of detected and suppressed errors, rerun with: -v
==94144== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 17 from 17)

[bnoordhuis]

Run node directly under valgrind, you're tracing your shell now.

Maybe try it on Linux as well. Valgrind is sometimes hit-and-miss on OS X.

[mhhf]

Ah! Here is the output on OS X:
A complete dump is here

Indeed leveldb is among the dump in the heap summery. Does this mean the problems are most likely caused by it?

valgrind --leak-check=yes node ~/nexus/dapple/cmd/main.js
==7286== Memcheck, a memory error detector
==7286== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==7286== Using Valgrind-3.12.0.SVN and LibVEX; rerun with -h for copyright info
==7286== Command: node /Users/mhhf/nexus/dapple/cmd/main.js
==7286==
==7286== Warning: set address range perms: large range [0x248d9ee24000, 0x248dbee24000) (noaccess)
==7286== Syscall param __pthread_sigmask(set) points to uninitialised byte(s)
==7286==    at 0x102EC1F36: __pthread_sigmask (in /usr/lib/system/libsystem_kernel.dylib)
==7286==    by 0x1030199B0: pthread_sigmask (in /usr/lib/system/libsystem_pthread.dylib)
==7286==    by 0x1009770AC: uv__signal_unlock_and_unblock (in /usr/local/bin/node)
==7286==    by 0x100976F7B: uv_signal_start (in /usr/local/bin/node)
==7286==    by 0x100813371: node::SignalWrap::Start(v8::FunctionCallbackInfo<v8::Value> const&) (in /usr/local/bin/node)
==7286==    by 0x100184E34: v8::internal::FunctionCallbackArguments::Call(void (*)(v8::FunctionCallbackInfo<v8::Value> const&)) (in /usr/local/bin/node)
==7286==    by 0x1001CAEE8: v8::internal::MaybeHandle<v8::internal::Object> v8::internal::(anonymous namespace)::HandleApiCallHelper<false>(v8::internal::Isolate*, v8::internal::(anonymous namespace)::BuiltinArguments<(v8::internal::BuiltinExtraArguments)1>) (in /usr/local/bin/node)
==7286==    by 0x1001DE446: v8::internal::Builtin_HandleApiCall(int, v8::internal::Object**, v8::internal::Isolate*) (in /usr/local/bin/node)
==7286==    by 0x248D9F20961A: ???
==7286==    by 0x248D9F31F26D: ???
==7286==    by 0x248D9F31EDB2: ???
==7286==    by 0x248D9F31E801: ???
==7286==  Address 0x7fff5fbfd19c is on thread 1's stack
==7286==  in frame #3, created by uv_signal_start (???:)
==7286==
--7286-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option
--7286-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option (repeated 2 times)
--7286-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option (repeated 4 times)
==7286== Syscall param __pthread_sigmask(set) points to uninitialised byte(s)
==7286==    at 0x102EC1F36: __pthread_sigmask (in /usr/lib/system/libsystem_kernel.dylib)
==7286==    by 0x1030199B0: pthread_sigmask (in /usr/lib/system/libsystem_pthread.dylib)
==7286==    by 0x1009770AC: uv__signal_unlock_and_unblock (in /usr/local/bin/node)
==7286==    by 0x100976AA6: uv__signal_stop (in /usr/local/bin/node)
==7286==    by 0x1009770CB: uv_signal_stop (in /usr/local/bin/node)
==7286==    by 0x10096FEDF: uv_close (in /usr/local/bin/node)
==7286==    by 0x1007DD3CC: node::HandleWrap::Close(v8::FunctionCallbackInfo<v8::Value> const&) (in /usr/local/bin/node)
==7286==    by 0x100184E34: v8::internal::FunctionCallbackArguments::Call(void (*)(v8::FunctionCallbackInfo<v8::Value> const&)) (in /usr/local/bin/node)
==7286==    by 0x1001CAEE8: v8::internal::MaybeHandle<v8::internal::Object> v8::internal::(anonymous namespace)::HandleApiCallHelper<false>(v8::internal::Isolate*, v8::internal::(anonymous namespace)::BuiltinArguments<(v8::internal::BuiltinExtraArguments)1>) (in /usr/local/bin/node)
==7286==    by 0x1001DE446: v8::internal::Builtin_HandleApiCall(int, v8::internal::Object**, v8::internal::Isolate*) (in /usr/local/bin/node)
==7286==    by 0x248D9F20961A: ???
==7286==    by 0x248DA0EC8B59: ???
==7286==  Address 0x7fff5fbf6c3c is on thread 1's stack
==7286==  in frame #3, created by uv__signal_stop (???:)
==7286==
--7286-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option (repeated 8 times)
==7286== Invalid read of size 1
==7286==    at 0x100977A3D: uv__stream_io (in /usr/local/bin/node)
==7286==    by 0x10097F197: uv__io_poll (in /usr/local/bin/node)
==7286==    by 0x100970276: uv_run (in /usr/local/bin/node)
==7286==    by 0x1007E97B9: node::Start(int, char**) (in /usr/local/bin/node)
==7286==    by 0x100001033: (below main) (in /usr/local/bin/node)
==7286==  Address 0x103b519c9 is 729 bytes inside a block of size 800 free'd
==7286==    at 0x101BB5E3F: free (in /usr/local/Cellar/valgrind/HEAD/lib/valgrind/vgpreload_memcheck-amd64-darwin.so)
==7286==    by 0x1007A003C: v8::internal::CodePatcher::~CodePatcher() (in /usr/local/bin/node)
==7286==    by 0x10078653D: v8::internal::Code::PatchPlatformCodeAge(v8::internal::Isolate*, unsigned char*, v8::internal::Code::Age, v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x10058A3A4: v8::internal::Code::MakeOlder(v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x1004A75A9: v8::internal::StaticMarkingVisitor<v8::internal::IncrementalMarkingMarkingVisitor>::VisitCode(v8::internal::Map*, v8::internal::HeapObject*) (in /usr/local/bin/node)
==7286==    by 0x1004A5C83: v8::internal::IncrementalMarking::Step(long, v8::internal::IncrementalMarking::CompletionAction, v8::internal::IncrementalMarking::ForceMarkingAction, v8::internal::IncrementalMarking::ForceCompletionAction) (in /usr/local/bin/node)
==7286==    by 0x1004E607C: v8::internal::NewSpace::EnsureAllocation(int, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x10046221E: v8::internal::Heap::AllocateRaw(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x100488C57: v8::internal::Heap::AllocateFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==    by 0x1004489BC: v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==    by 0x10068E2BA: v8::internal::Runtime_AllocateInTargetSpace(int, v8::internal::Object**, v8::internal::Isolate*) (in /usr/local/bin/node)
==7286==    by 0x248D9F206337: ???
==7286==  Block was alloc'd at
==7286==    at 0x101BB59FB: malloc (in /usr/local/Cellar/valgrind/HEAD/lib/valgrind/vgpreload_memcheck-amd64-darwin.so)
==7286==    by 0x10014C17A: v8::internal::Malloced::New(unsigned long) (in /usr/local/bin/node)
==7286==    by 0x10075A7DD: v8::internal::Assembler::Assembler(v8::internal::Isolate*, void*, int) (in /usr/local/bin/node)
==7286==    by 0x10079FF1A: v8::internal::CodePatcher::CodePatcher(v8::internal::Isolate*, unsigned char*, int) (in /usr/local/bin/node)
==7286==    by 0x100786515: v8::internal::Code::PatchPlatformCodeAge(v8::internal::Isolate*, unsigned char*, v8::internal::Code::Age, v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x10058A3A4: v8::internal::Code::MakeOlder(v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x1004A75A9: v8::internal::StaticMarkingVisitor<v8::internal::IncrementalMarkingMarkingVisitor>::VisitCode(v8::internal::Map*, v8::internal::HeapObject*) (in /usr/local/bin/node)
==7286==    by 0x1004A5C83: v8::internal::IncrementalMarking::Step(long, v8::internal::IncrementalMarking::CompletionAction, v8::internal::IncrementalMarking::ForceMarkingAction, v8::internal::IncrementalMarking::ForceCompletionAction) (in /usr/local/bin/node)
==7286==    by 0x1004E607C: v8::internal::NewSpace::EnsureAllocation(int, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x10046221E: v8::internal::Heap::AllocateRaw(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x100488C57: v8::internal::Heap::AllocateFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==    by 0x1004489BC: v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==
==7286== Invalid read of size 4
==7286==    at 0x100978B30: uv___stream_fd (in /usr/local/bin/node)
==7286==    by 0x100977BB9: uv__stream_io (in /usr/local/bin/node)
==7286==    by 0x10097F197: uv__io_poll (in /usr/local/bin/node)
==7286==    by 0x100970276: uv_run (in /usr/local/bin/node)
==7286==    by 0x1007E97B9: node::Start(int, char**) (in /usr/local/bin/node)
==7286==    by 0x100001033: (below main) (in /usr/local/bin/node)
==7286==  Address 0x103b51980 is 656 bytes inside a block of size 800 free'd
==7286==    at 0x101BB5E3F: free (in /usr/local/Cellar/valgrind/HEAD/lib/valgrind/vgpreload_memcheck-amd64-darwin.so)
==7286==    by 0x1007A003C: v8::internal::CodePatcher::~CodePatcher() (in /usr/local/bin/node)
==7286==    by 0x10078653D: v8::internal::Code::PatchPlatformCodeAge(v8::internal::Isolate*, unsigned char*, v8::internal::Code::Age, v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x10058A3A4: v8::internal::Code::MakeOlder(v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x1004A75A9: v8::internal::StaticMarkingVisitor<v8::internal::IncrementalMarkingMarkingVisitor>::VisitCode(v8::internal::Map*, v8::internal::HeapObject*) (in /usr/local/bin/node)
==7286==    by 0x1004A5C83: v8::internal::IncrementalMarking::Step(long, v8::internal::IncrementalMarking::CompletionAction, v8::internal::IncrementalMarking::ForceMarkingAction, v8::internal::IncrementalMarking::ForceCompletionAction) (in /usr/local/bin/node)
==7286==    by 0x1004E607C: v8::internal::NewSpace::EnsureAllocation(int, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x10046221E: v8::internal::Heap::AllocateRaw(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x100488C57: v8::internal::Heap::AllocateFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==    by 0x1004489BC: v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==    by 0x10068E2BA: v8::internal::Runtime_AllocateInTargetSpace(int, v8::internal::Object**, v8::internal::Isolate*) (in /usr/local/bin/node)
==7286==    by 0x248D9F206337: ???
==7286==  Block was alloc'd at
==7286==    at 0x101BB59FB: malloc (in /usr/local/Cellar/valgrind/HEAD/lib/valgrind/vgpreload_memcheck-amd64-darwin.so)
==7286==    by 0x10014C17A: v8::internal::Malloced::New(unsigned long) (in /usr/local/bin/node)
==7286==    by 0x10075A7DD: v8::internal::Assembler::Assembler(v8::internal::Isolate*, void*, int) (in /usr/local/bin/node)
==7286==    by 0x10079FF1A: v8::internal::CodePatcher::CodePatcher(v8::internal::Isolate*, unsigned char*, int) (in /usr/local/bin/node)
==7286==    by 0x100786515: v8::internal::Code::PatchPlatformCodeAge(v8::internal::Isolate*, unsigned char*, v8::internal::Code::Age, v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x10058A3A4: v8::internal::Code::MakeOlder(v8::internal::MarkingParity) (in /usr/local/bin/node)
==7286==    by 0x1004A75A9: v8::internal::StaticMarkingVisitor<v8::internal::IncrementalMarkingMarkingVisitor>::VisitCode(v8::internal::Map*, v8::internal::HeapObject*) (in /usr/local/bin/node)
==7286==    by 0x1004A5C83: v8::internal::IncrementalMarking::Step(long, v8::internal::IncrementalMarking::CompletionAction, v8::internal::IncrementalMarking::ForceMarkingAction, v8::internal::IncrementalMarking::ForceCompletionAction) (in /usr/local/bin/node)
==7286==    by 0x1004E607C: v8::internal::NewSpace::EnsureAllocation(int, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x10046221E: v8::internal::Heap::AllocateRaw(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) (in /usr/local/bin/node)
==7286==    by 0x100488C57: v8::internal::Heap::AllocateFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==    by 0x1004489BC: v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) (in /usr/local/bin/node)
==7286==
Assertion failed: (handle->type == UV_TCP || handle->type == UV_TTY || handle->type == UV_NAMED_PIPE), function uv___stream_fd, file ../deps/uv/src/unix/stream.c, line 1563.
==7286==
==7286== Process terminating with default action of signal 6 (SIGABRT)
==7286==    at 0x102EC1F36: __pthread_sigmask (in /usr/lib/system/libsystem_kernel.dylib)
==7286==    by 0x102DD076C: __abort (in /usr/lib/system/libsystem_c.dylib)
==7286==    by 0x102DD06ED: abort (in /usr/lib/system/libsystem_c.dylib)
==7286==    by 0x102D97DD7: __assert_rtn (in /usr/lib/system/libsystem_c.dylib)
==7286==    by 0x100978B80: uv___stream_fd (in /usr/local/bin/node)
==7286==    by 0x100977BB9: uv__stream_io (in /usr/local/bin/node)
==7286==    by 0x10097F197: uv__io_poll (in /usr/local/bin/node)
==7286==    by 0x100970276: uv_run (in /usr/local/bin/node)
==7286==    by 0x1007E97B9: node::Start(int, char**) (in /usr/local/bin/node)
==7286==    by 0x100001033: (below main) (in /usr/local/bin/node)
==7286==
==7286== HEAP SUMMARY:
==7286==     in use at exit: 127,419,314 bytes in 4,679 blocks
==7286==   total heap usage: 859,668 allocs, 854,989 frees, 6,233,477,728 bytes allocated
==7286==
[...]

[bnoordhuis]

The leveldb entries are memory leaks, which makes sense - the program is terminated so leveldb doesn't get a chance to clean up. Still, it would be good to exclude it just to see if the problem goes away.

Are you using the homebrew build by any chance? Someone reported a similar issue yesterday that went away when they switched to the official binaries from https://nodejs.org/.

[Trott]

This issue has been inactive for sufficiently long that it seems like perhaps it should be closed. Feel free to re-open (or leave a comment requesting that it be re-opened) if you disagree. I'm just tidying up and not acting on a super-strong opinion or anything like that.

[xumix]

@Trott having this issue in Connormiha/jest-css-modules-transform#14

[bnoordhuis]

@xumix If you can reproduce with a supported version of Node.js and your script doesn't use native modules, then please open a new issue and include steps to reproduce. The more minimal the test case, the better.

[OmgImAlexis]

Randomly just hit this or something similar myself. Using node v14.13.0 and npm v6.14.8 on macOS 10.15.7 (19H2).

Assertion failed: (handle->type == UV_TCP || handle->type == UV_TTY || handle->type == UV_NAMED_PIPE), function uv___stream_fd, file ../deps/uv/src/unix/stream.c, line 1622.
[1]    47500 abort      DEBUG=true PORT=9000 ./node_modules/.bin/qq ./src/schemas