pypy 死锁问题

‘’‘
#0 0x00007fb8f21079b0 in semwait () from /lib64/libpthread.so.0
#1 0x00007fb8f495c670 in RPyThreadAcquireLock () from /opt/pypy/bin/libpypy-c.so
#2 0x00007fb8e76c82be in ?? ()
#3 0x00007fb8f499df18 in ?? () from /opt/pypy/bin/libpypy-c.so
#4 0x00007fb8e71a37f8 in ?? ()
#5 0x00007fb8f4f2c240 in ?? () from /opt/pypy/bin/libpypy-c.so
#6 0x00007fb8f51f1b80 in ?? () from /opt/pypy/bin/libpypy-c.so
#7 0x00007fb8f51f1b80 in ?? () from /opt/pypy/bin/libpypy-c.so
#8 0x00007fb8f66ce020 in ?? ()
#9 0x00007fb8f4f792e0 in ?? () from /opt/pypy/bin/libpypy-c.so
#10 0x00007fb8f42d8fba in pypy_g_allocate_instance_W_DictMultiObject () from /opt/pypy/bin/libpypy-c.so
#11 0x00007fb8e23a6078 in ?? ()
#12 0x00007fb8f66ce020 in ?? ()
#13 0x00007fb8e84bf668 in ?? ()
#14 0x0000000000000000 in ?? ()
‘’‘

gdb 看的调用栈，有人知道这是为什么死锁了么？