Revision 663866656336 () - Diff

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### crash1

dave@akai tmp % lldb process attach -n beam.smp
Warning: program arguments are ignored when attaching.
Attaching to process with:
    process attach -n "beam.smp"
Process 82299 stopped
Executable module set to "/usr/local/Cellar/erlang/R15B/lib/erlang/erts-5.9/bin/beam.smp".
Architecture set to: x86_64.
(lldb) c
Process 82299 resuming
Process 82299 stopped
* thread #5: tid = 0x2403, 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
    frame #0: 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15
libsystem_c.dylib`flockfile + 15:
-> 0x7fff88b661ec:  movq   104(%rbx), %rdi
   0x7fff88b661f0:  cmpq   %rax, 72(%rdi)
   0x7fff88b661f4:  jne    0x00007fff88b661fe       ; flockfile + 33
   0x7fff88b661f6:  incl   80(%rdi)
(lldb) thread list
Process 82299 stopped
  thread #1: tid = 0x1f03, 0x00007fff87b7bdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
  thread #2: tid = 0x2103, 0x00007fff87b7caf2 libsystem_kernel.dylib`read + 10
  thread #3: tid = 0x2203, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #4: tid = 0x2303, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
* thread #5: tid = 0x2403, 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
  thread #6: tid = 0x2503, 0x00007fff88b1f149 libsystem_c.dylib`sched_yield + 11
  thread #7: tid = 0x2603, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #8: tid = 0x2703, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #9: tid = 0x2803, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #10: tid = 0x2903, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #11: tid = 0x2a03, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #12: tid = 0x2b03, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #13: tid = 0x2c03, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
(lldb) thread backtrace
* thread #5: tid = 0x2403, 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
    frame #0: 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15
    frame #1: 0x00007fff88b06938 libsystem_c.dylib`putc + 32
    frame #2: 0x000000001dc60018 beam.smp`write_buf + 273
    frame #3: 0x000000001dc6064d beam.smp`insert_buf + 481
    frame #4: 0x000000001dc5fc46 beam.smp`put_chars + 9
    frame #5: 0x000000001dc5f276 beam.smp`ttysl_from_erlang + 110
    frame #6: 0x000000001db8c3a0 beam.smp`erts_write_to_port + 2875
    frame #7: 0x000000001db8d75c beam.smp`erts_port_command + 256
    frame #8: 0x000000001db854c7 beam.smp`do_send + 1319
    frame #9: 0x000000001db84ce0 beam.smp`erl_send + 38
    frame #10: 0x000000001dc0e6c8 beam.smp`process_main + 18935
    frame #11: 0x000000001db9a52a beam.smp`sched_thread_func + 506
    frame #12: 0x000000001dc79c08 beam.smp`thr_wrapper + 111
    frame #13: 0x00007fff88b1e8bf libsystem_c.dylib`_pthread_start + 335
    frame #14: 0x00007fff88b21b75 libsystem_c.dylib`thread_start + 13

### crash2
dave@akai tmp % lldb process attach -n beam.smp
Warning: program arguments are ignored when attaching.
Attaching to process with:
    process attach -n "beam.smp"
Process 16887 stopped
Executable module set to "/usr/local/Cellar/erlang/R15B/lib/erlang/erts-5.9/bin/beam.smp".
Architecture set to: x86_64.
(lldb) c
Process 16887 resuming
Process 16887 stopped
* thread #5: tid = 0x2403, 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
    frame #0: 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15
libsystem_c.dylib`flockfile + 15:
-> 0x7fff88b661ec:  movq   104(%rbx), %rdi
   0x7fff88b661f0:  cmpq   %rax, 72(%rdi)
   0x7fff88b661f4:  jne    0x00007fff88b661fe       ; flockfile + 33
   0x7fff88b661f6:  incl   80(%rdi)
(lldb) thread list
Process 16887 stopped
  thread #1: tid = 0x1f03, 0x00007fff87b7bdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
  thread #2: tid = 0x2103, 0x00007fff87b7caf2 libsystem_kernel.dylib`read + 10
  thread #3: tid = 0x2203, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #4: tid = 0x2303, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
* thread #5: tid = 0x2403, 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
  thread #6: tid = 0x2503, 0x00000000136e9cfe beam.smp`sched_spin_wait + 35
  thread #7: tid = 0x2603, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #8: tid = 0x2703, 0x00007fff87b7bdf2 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
  thread #9: tid = 0x2803, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #10: tid = 0x2903, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #11: tid = 0x2a03, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #12: tid = 0x2b03, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
  thread #13: tid = 0x2c03, 0x00007fff87b7bbca libsystem_kernel.dylib`__psynch_cvwait + 10
(lldb) thread backtrace
* thread #5: tid = 0x2403, 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15, stop reason = EXC_BAD_ACCESS (code=1, address=0x68)
    frame #0: 0x00007fff88b661ec libsystem_c.dylib`flockfile + 15
    frame #1: 0x00007fff88b06938 libsystem_c.dylib`putc + 32
    frame #2: 0x00000000137a5018 beam.smp`write_buf + 273
    frame #3: 0x00000000137a564d beam.smp`insert_buf + 481
    frame #4: 0x00000000137a4c46 beam.smp`put_chars + 9
    frame #5: 0x00000000137a4276 beam.smp`ttysl_from_erlang + 110
    frame #6: 0x00000000136d13a0 beam.smp`erts_write_to_port + 2875
    frame #7: 0x00000000136d275c beam.smp`erts_port_command + 256
    frame #8: 0x00000000136ca4c7 beam.smp`do_send + 1319
    frame #9: 0x00000000136c9ce0 beam.smp`erl_send + 38
    frame #10: 0x00000000137536c8 beam.smp`process_main + 18935
    frame #11: 0x00000000136df52a beam.smp`sched_thread_func + 506
    frame #12: 0x00000000137bec08 beam.smp`thr_wrapper + 111
    frame #13: 0x00007fff88b1e8bf libsystem_c.dylib`_pthread_start + 335
    frame #14: 0x00007fff88b21b75 libsystem_c.dylib`thread_start + 13
(lldb) q