Bug#223110: Race condition between fork() and exit() when using pthread_atfork() from a shared library

[Martin Clauss]

Hmmm,

this sounds quite similar to this Redhat bug, which is fixed meanwhile:

"race/deadlock in fork() with signal handler."
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=90036

Maybe that one can offer you a solution...