Hello,

I have encountered weir crash on this require:
(((task) != ((void *)0)) && (((const isc__magic_t *)(task))->magic == ((('T') 
<< 24 | ('A') << 16 | ('S') << 8 | ('K')))))

This happened couple times when I tried to load 100 small zones (~ 100 records 
each) and send SIGINT to named during zone loading.

I'm attaching back traces from GDB.


I'm not 100 % sure that it wasn't caused by my own code loaded into BIND but I 
have one wild hypothesis:

isc_ratelimiter_enqueue() function (and its family) for some reason do not use 
isc_task_attach() for attaching sender task to ev->ev_sender field in the 
isc_event structure.

In my case it seems that the task referenced from ev->ev_sender was detached 
and freed before the event from rate limiter had a chance to do something 
about it.

Is it possible or am I completely wrong?

Thank you for your time!

-- 
Petr Spacek  @  Red Hat