crash on iojs-1.6.x

[heavyk]

since upgrading from 1.5.1, I regularly get this error:

Assertion failed: (!(handle->flags & (UV_CLOSING | UV_CLOSED))), function uv_close, file ../deps/uv/src/unix/core.c, line 95.

it's the third time today, so there will be more opportunities to debug. I'm checking out master and recompiling with --debug now, so I can give more info if it happens again

I'm doing a lot of spdy development, so it could perhaps have something to do with openssl upgrade - dunno. I've also noticed another error lately too, since the 1.6.1 upgrade it's crashed on socket write after hangup - but I don't know if it's related - perhaps to the writev commit

how can I debug this better?

OSX 10.9.5

[bnoordhuis]

That looks like a double close or a corrupted libuv handle. Can you check the debug binary's backtrace with gdb or lldb?

[heavyk]

sure. I went to master, but it tells me 'let' is a reserved keyword so I went back to tag v1.6.1 and reconfigured with --debug --gdb

I attached gdb to the running process and continued.. is there an easier way of launching iojs without having to do that? without the ability to relaunch iojs, I'm slightly impaired in my ability to do dev... I'll try and work around it for now

[bnoordhuis]

You can turn on core dumps (ulimit -c unlimited) and then inspect the core dump in gdb.

[silverwind]

There might be some core dumps already there in /cores.

[heavyk]

just checked and there aren't any... I hadn't known of that feature until now, actually. so far still no crashes... seems go go wonky when I'm right about the time I'm gonna get a feature done, so here's to getting things done 👍 it'll crash again soon... cheers

[heavyk]

ok, it just happened to me again, however there is still nothing inside of /cores. it happened this time when I pressed ctrl-c to close it.. I do remember on sunday it was crashing though. I re-ran ulimit -c unlimited so hopefully it'll give a core dump

EDIT: just added it to my zshrc, so in case I accidentally change terminals again it'll dump.. :)

[heavyk]

is this related to b64983d ?

I can do further investigation if necessary

➜  server git:(master) ✗ lldb -c  /cores/core.99933
(lldb) target create --core "/cores/core.99933"
warning: (x86_64) /cores/core.99933 load command 596 LC_SEGMENT_64 has a fileoff + filesize (0x53885000) that extends beyond the end of the file (0x53884000), the segment will be truncated to match
warning: (x86_64) /cores/core.99933 load command 597 LC_SEGMENT_64 has a fileoff (0x53885000) that extends beyond the end of the file (0x53884000), ignoring this section
Core file '/cores/core.99933' (x86_64) was loaded.
Process 0 stopped
* thread #1: tid = 0x0000, 0x00007fff8f84a866 libsystem_kernel.dylib`__pthread_kill + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a866 libsystem_kernel.dylib`__pthread_kill + 10
libsystem_kernel.dylib`__pthread_kill + 10:
-> 0x7fff8f84a866:  jae    0x7fff8f84a870            ; __pthread_kill + 20
   0x7fff8f84a868:  movq   %rax, %rdi
   0x7fff8f84a86b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a870:  retq
  thread #2: tid = 0x0001, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #3: tid = 0x0002, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #4: tid = 0x0003, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #5: tid = 0x0004, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #6: tid = 0x0005, 0x00007fff8f846a56 libsystem_kernel.dylib`semaphore_wait_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a56 libsystem_kernel.dylib`semaphore_wait_trap + 10
libsystem_kernel.dylib`semaphore_wait_trap + 10:
-> 0x7fff8f846a56:  retq
   0x7fff8f846a57:  nop

libsystem_kernel.dylib`semaphore_wait_signal_trap:
   0x7fff8f846a58:  movq   %rcx, %r10
   0x7fff8f846a5b:  movl   $0x1000025, %eax
  thread #7: tid = 0x0006, 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10
libsystem_kernel.dylib`__select + 10:
-> 0x7fff8f84a9aa:  jae    0x7fff8f84a9b4            ; __select + 20
   0x7fff8f84a9ac:  movq   %rax, %rdi
   0x7fff8f84a9af:  jmp    0x7fff8f84719a            ; cerror
   0x7fff8f84a9b4:  retq
  thread #8: tid = 0x0007, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #9: tid = 0x0008, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #10: tid = 0x0009, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #11: tid = 0x000a, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
libsystem_kernel.dylib`__psynch_cvwait + 10:
-> 0x7fff8f84a716:  jae    0x7fff8f84a720            ; __psynch_cvwait + 20
   0x7fff8f84a718:  movq   %rax, %rdi
   0x7fff8f84a71b:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84a720:  retq
  thread #12: tid = 0x000b, 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10
libsystem_kernel.dylib`__select + 10:
-> 0x7fff8f84a9aa:  jae    0x7fff8f84a9b4            ; __select + 20
   0x7fff8f84a9ac:  movq   %rax, %rdi
   0x7fff8f84a9af:  jmp    0x7fff8f84719a            ; cerror
   0x7fff8f84a9b4:  retq
  thread #13: tid = 0x000c, 0x00007fff8f84b662 libsystem_kernel.dylib`kevent64 + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84b662 libsystem_kernel.dylib`kevent64 + 10
libsystem_kernel.dylib`kevent64 + 10:
-> 0x7fff8f84b662:  jae    0x7fff8f84b66c            ; kevent64 + 20
   0x7fff8f84b664:  movq   %rax, %rdi
   0x7fff8f84b667:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84b66c:  retq
  thread #14: tid = 0x000d, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #15: tid = 0x000e, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #16: tid = 0x000f, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #17: tid = 0x0010, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #18: tid = 0x0011, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #19: tid = 0x0012, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #20: tid = 0x0013, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #21: tid = 0x0014, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #22: tid = 0x0015, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #23: tid = 0x0016, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #24: tid = 0x0017, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #25: tid = 0x0018, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #26: tid = 0x0019, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #27: tid = 0x001a, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #28: tid = 0x001b, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #29: tid = 0x001c, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #30: tid = 0x001d, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #31: tid = 0x001e, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #32: tid = 0x001f, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #33: tid = 0x0020, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #34: tid = 0x0021, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #35: tid = 0x0022, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #36: tid = 0x0023, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #37: tid = 0x0024, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #38: tid = 0x0025, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #39: tid = 0x0026, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #40: tid = 0x0027, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #41: tid = 0x0028, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #42: tid = 0x0029, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #43: tid = 0x002a, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #44: tid = 0x002b, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #45: tid = 0x002c, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
libsystem_kernel.dylib`mach_msg_trap + 10:
-> 0x7fff8f846a1a:  retq
   0x7fff8f846a1b:  nop

libsystem_kernel.dylib`mach_msg_overwrite_trap:
   0x7fff8f846a1c:  movq   %rcx, %r10
   0x7fff8f846a1f:  movl   $0x1000020, %eax
  thread #46: tid = 0x002d, 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10
libsystem_kernel.dylib`__workq_kernreturn + 10:
-> 0x7fff8f84ae6a:  jae    0x7fff8f84ae74            ; __workq_kernreturn + 20
   0x7fff8f84ae6c:  movq   %rax, %rdi
   0x7fff8f84ae6f:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84ae74:  retq
  thread #47: tid = 0x002e, 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10
libsystem_kernel.dylib`__workq_kernreturn + 10:
-> 0x7fff8f84ae6a:  jae    0x7fff8f84ae74            ; __workq_kernreturn + 20
   0x7fff8f84ae6c:  movq   %rax, %rdi
   0x7fff8f84ae6f:  jmp    0x7fff8f847175            ; cerror_nocancel
   0x7fff8f84ae74:  retq
(lldb)

EDIT: gonna upgrade to 1.6.2. let you know if something changes.

[heavyk]

still happening ... quite regularly... I can send the core dumps out if someone wants them. I have 3 now.

EDIT: holy shit ... they're 1.2G each, so I'll keep a few around in case

[bnoordhuis]

@heavyk Can you post full backtraces? That's bt all in lldb.

[heavyk]

sure

➜  server git:(master) ✗ lldb -c  /cores/core.99933
(lldb) target create --core "/cores/core.99933"
warning: (x86_64) /cores/core.99933 load command 596 LC_SEGMENT_64 has a fileoff + filesize (0x53885000) that extends beyond the end of the file (0x53884000), the segment will be truncated to match
warning: (x86_64) /cores/core.99933 load command 597 LC_SEGMENT_64 has a fileoff (0x53885000) that extends beyond the end of the file (0x53884000), ignoring this section
Core file '/cores/core.99933' (x86_64) was loaded.
[ EDIT: truncated ... posted both of them ]
(lldb) bt all
* thread #1: tid = 0x0000, 0x00007fff8f84a866 libsystem_kernel.dylib`__pthread_kill + 10, stop reason = signal SIGSTOP
  * frame #0: 0x00007fff8f84a866 libsystem_kernel.dylib`__pthread_kill + 10
    frame #1: 0x00007fff87f2035c libsystem_pthread.dylib`pthread_kill + 92
    frame #2: 0x00007fff86396b1a libsystem_c.dylib`abort + 125
    frame #3: 0x00007fff863609bf libsystem_c.dylib`__assert_rtn + 321
    frame #4: 0x0000000100633ac3 node
    frame #5: 0x00000001017cc223 fse.node`fse::FSEvents::Stop(v8::FunctionCallbackInfo<v8::Value> const&) [inlined] fse::FSEvents::asyncStop(this=<unavailable>) + 109 at async.cc:40
    frame #6: 0x00000001017cc208 fse.node`fse::FSEvents::Stop(args=0x00007fff5fbfddd8) + 82 at methods.cc:35
    frame #7: 0x0000000100139a1f node
    frame #8: 0x0000000100164d3d node
    frame #9: 0x00000bf4e6f060bb
    frame #10: 0x00000bf4e6f24bc2
    frame #11: 0x00000bf4e80da094
    frame #12: 0x00000bf4e8d3882f
    frame #13: 0x00000bf4e8d38660
    frame #14: 0x00000bf4e6f1ea55
    frame #15: 0x00000bf4e80d23aa
    frame #16: 0x00000bf4e6f1ea55
    frame #17: 0x00000bf4e8d39ac8
    frame #18: 0x00000bf4e8d38338
    frame #19: 0x00000bf4e6f1ea55
    frame #20: 0x00000bf4e80d23aa
    frame #21: 0x00000bf4e6f1ea55
    frame #22: 0x00000bf4e8d38219
    frame #23: 0x00000bf4e6f1ea55
    frame #24: 0x00000bf4e80d23aa
    frame #25: 0x00000bf4e6f1ea55
    frame #26: 0x00000bf4e8d380d2
    frame #27: 0x00000bf4e9296dc8
    frame #28: 0x00000bf4e9296b0b
    frame #29: 0x00000bf4e8d2daf2
    frame #30: 0x00000bf4e703ab77
    frame #31: 0x00000bf4e703aa4b
    frame #32: 0x00000bf4e703a90b
    frame #33: 0x00000bf4e703be18
    frame #34: 0x00000bf4e703b793
    frame #35: 0x00000bf4e703b65f
    frame #36: 0x00000bf4e8d348cc
    frame #37: 0x00000bf4e6f1ea55
    frame #38: 0x00000bf4e9296702
    frame #39: 0x00000bf4e8d2daf2
    frame #40: 0x00000bf4e703ab77
    frame #41: 0x00000bf4e703aa4b
    frame #42: 0x00000bf4e703a90b
    frame #43: 0x00000bf4e703be18
    frame #44: 0x00000bf4e703b793
    frame #45: 0x00000bf4e703b65f
    frame #46: 0x00000bf4e8d348cc
    frame #47: 0x00000bf4e6f1ea55
    frame #48: 0x00000bf4e9296523
    frame #49: 0x00000bf4e73b95b7
    frame #50: 0x00000bf4e6f1f0c0
    frame #51: 0x00000bf4e6f1dff1
    frame #52: 0x00000001002628f8 node
    frame #53: 0x00000001001270b1 node
    frame #54: 0x00000001005bb767 node
    frame #55: 0x00000001005fa153 node
    frame #56: 0x000000010063d666 node
    frame #57: 0x0000000100633e95 node
    frame #58: 0x00000001005cdbc8 node
    frame #59: 0x0000000100000d74 node

  thread #2: tid = 0x0001, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001005e747a node
    frame #4: 0x00000001005e722d node
    frame #5: 0x000000010063ccae node
    frame #6: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #7: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #8: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #3: tid = 0x0002, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001005e747a node
    frame #4: 0x00000001005e722d node
    frame #5: 0x000000010063ccae node
    frame #6: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #7: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #8: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #4: tid = 0x0003, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001005e747a node
    frame #4: 0x00000001005e722d node
    frame #5: 0x000000010063ccae node
    frame #6: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #7: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #8: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #5: tid = 0x0004, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001005e747a node
    frame #4: 0x00000001005e722d node
    frame #5: 0x000000010063ccae node
    frame #6: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #7: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #8: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #6: tid = 0x0005, 0x00007fff8f846a56 libsystem_kernel.dylib`semaphore_wait_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a56 libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x0000000100642e27 node
    frame #2: 0x00000001004657e5 node
    frame #3: 0x0000000100644897 node
    frame #4: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #5: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #6: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #7: tid = 0x0006, 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10
    frame #1: 0x000000010063ad31 node
    frame #2: 0x000000010063ccae node
    frame #3: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #4: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #5: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #8: tid = 0x0007, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001006321cf node
    frame #4: 0x000000010063ccae node
    frame #5: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #6: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #7: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #9: tid = 0x0008, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001006321cf node
    frame #4: 0x000000010063ccae node
    frame #5: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #6: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #7: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #10: tid = 0x0009, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001006321cf node
    frame #4: 0x000000010063ccae node
    frame #5: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #6: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #7: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #11: tid = 0x000a, 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a716 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x00007fff87f21c3b libsystem_pthread.dylib`_pthread_cond_wait + 727
    frame #2: 0x000000010063cfc2 node
    frame #3: 0x00000001006321cf node
    frame #4: 0x000000010063ccae node
    frame #5: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #6: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #7: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #12: tid = 0x000b, 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84a9aa libsystem_kernel.dylib`__select + 10
    frame #1: 0x000000010063ad31 node
    frame #2: 0x000000010063ccae node
    frame #3: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #4: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #5: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #13: tid = 0x000c, 0x00007fff8f84b662 libsystem_kernel.dylib`kevent64 + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84b662 libsystem_kernel.dylib`kevent64 + 10
    frame #1: 0x00007fff8e6f2421 libdispatch.dylib`_dispatch_mgr_invoke + 239
    frame #2: 0x00007fff8e6f2136 libdispatch.dylib`_dispatch_mgr_thread + 52

  thread #14: tid = 0x000d, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101416d20) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #15: tid = 0x000e, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101400900) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #16: tid = 0x000f, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101414d20) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #17: tid = 0x0010, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010144e700) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #18: tid = 0x0011, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010140dce0) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #19: tid = 0x0012, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103a00ec0) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #20: tid = 0x0013, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103a00a70) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #21: tid = 0x0014, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101502950) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #22: tid = 0x0015, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101507d20) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #23: tid = 0x0016, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101502a60) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #24: tid = 0x0017, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010150cb10) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #25: tid = 0x0018, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010150d420) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #26: tid = 0x0019, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010150d530) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #27: tid = 0x001a, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010150db10) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #28: tid = 0x001b, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103b17c90) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #29: tid = 0x001c, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010102fa20) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #30: tid = 0x001d, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010102ac60) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #31: tid = 0x001e, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010101a250) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #32: tid = 0x001f, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010130a890) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #33: tid = 0x0020, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101307690) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #34: tid = 0x0021, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000101303270) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #35: tid = 0x0022, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x000000010130eab0) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #36: tid = 0x0023, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103b2f420) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #37: tid = 0x0024, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103b04240) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #38: tid = 0x0025, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103b016f0) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #39: tid = 0x0026, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103b2f220) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #40: tid = 0x0027, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103b29f00) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #41: tid = 0x0028, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103b03840) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #42: tid = 0x0029, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103f06550) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #43: tid = 0x002a, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103f06da0) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #44: tid = 0x002b, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103f06ba0) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #45: tid = 0x002c, 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f846a1a libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff8f845d18 libsystem_kernel.dylib`mach_msg + 64
    frame #2: 0x00007fff881f8f15 CoreFoundation`__CFRunLoopServiceMachPort + 181
    frame #3: 0x00007fff881f8539 CoreFoundation`__CFRunLoopRun + 1161
    frame #4: 0x00007fff881f7e75 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #5: 0x00007fff882ad811 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x00000001017cbec1 fse.node`fse::FSEvents::threadRun(ctx=0x0000000103f07ca0) + 157 at thread.cc:58
    frame #7: 0x00007fff87f1f899 libsystem_pthread.dylib`_pthread_body + 138
    frame #8: 0x00007fff87f1f72a libsystem_pthread.dylib`_pthread_start + 137
    frame #9: 0x00007fff87f23fc9 libsystem_pthread.dylib`thread_start + 13

  thread #46: tid = 0x002d, 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #1: 0x00007fff87f20f08 libsystem_pthread.dylib`_pthread_wqthread + 330
    frame #2: 0x00007fff87f23fb9 libsystem_pthread.dylib`start_wqthread + 13

  thread #47: tid = 0x002e, 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff8f84ae6a libsystem_kernel.dylib`__workq_kernreturn + 10
    frame #1: 0x00007fff87f20f08 libsystem_pthread.dylib`_pthread_wqthread + 330
    frame #2: 0x00007fff87f23fb9 libsystem_pthread.dylib`start_wqthread + 13
(lldb)

[heavyk]

btw, since I've upgraded to 1.6.2, I've not crashed since (but then again, it didn't crash all day the other day either.)

EDIT: if there's a way to truncate the dump, even still, if it helps, I'll still be glad to give it to you (only thing "private" is some self signed certs I made last week). want me to xz and put it on a server?

[bnoordhuis]

I see you're using the fsevents module. That module has a couple of known issues (see e.g. fsevents/fsevents#52) that I haven't gotten around to fixing yet. Closing, let's move this to the fsevents issue tracker.