cannot get core dump of crashing freeradius

Alan DeKok aland at
Tue Apr 20 10:54:47 CEST 2010

Jakob Hirsch wrote:
> So after some debugging I got to the root cause of this:
> The process's dumpable flag is reset every time the UID is changed. FR
> does this several times with fr_suid_up() and fr_suid_down() after
> switch_users() is run, e.g. in listen_bind().
> So I guess we have to change the fr_suid_* functions to always set the
> dumpable flag after setting the uid.

  Ah... OK.  That can be fixed for 2.1.9.

> btw, I wonder why is prctl() is not called when debug_flag is set. I
> would have thought that one would want to get a core dump especially
> when running in debug mode.

  It doesn't switch UIDs when in debug mode.  So it inherits whatever
code dump policy you set in the shell.

  Alan DeKok.

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