_umtx_op ... 'Operation timed out'

[Daniel Morante]

I have a process that is continuously crashing and I'm not sure if it's 
a problem with the program or my OS.  A trace shows:

clock_gettime(13,{1405354044.000000000 })        = 0 (0x0)
clock_gettime(0,{1405354045.002414521 })         = 0 (0x0)
clock_gettime(0,{1405354045.002713442 })         = 0 (0x0)
_umtx_op(0x800bbc0c8,0xf,0x0,0x0,0x7ffffebe5980,0x0) ERR#60 'Operation 
timed out'
_umtx_op(0x800bbc110,0xf,0x0,0x0,0x7ffffe5f2d00,0x0) ERR#60 'Operation 
timed out'
select(27,{6 7 18 19 23 25 26},{},{18 19 23 25 26},{0.050000 }) = 0 (0x0)
getpid()                                         = 22023 (0x5607)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)
clock_gettime(13,{1405354045.000000000 })        = 0 (0x0)

What does that mean?

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