path: root/test/nptl/libatfork.c
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2016-09-26test: sync tst-atfork2 with GNU libcWaldemar Brodkorb
2016-01-06pthread_atfork handlers not removed during dlcloseWaldemar Brodkorb
Invoke pthread_atfork handler cleanup when removing the associated DSO... If a program loads a DSO (dlopen) that sets up a pthread_atfork handler(s), and then subsequently closes the DSO, the handler(s) are left in place. If fork() is subsequently called, the handlers are invoked even though the DSO has been removed causing crashes or unpredictable code execution. This is because the code in __cxa_finalize(atexit.c)to invoke the unregister_atfork() routine is ifdef'd out with the comment that it hasn't been "looked into this yet...". Refs.: Add test-case, enable cleanup for NPTL only. Signed-off-by: John Ata <> Signed-off-by: Leonid Lisovskiy <>