[Valgrind-users] libpthread: recursive write lock granted on mutex/wrlock which does not support recursion

[Christoph B. <bar...@or...>]

Hi,

how should one interpret the following report:

Thread #11: Bug in libpthread: recursive write lock granted on 
mutex/wrlock which does not support recursion
==00:13:17:12.428 20623==    at 0x4C2D18D: pthread_spin_lock (in 
/usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so)


Is there a bug in libpthread that does something strange? Or is there a 
bug in my program that tries to lock a lock twice?

Thanks
Christoph