FreeRADIUS 1.0.4: SEGMENTATION FAULT
nbk at sitadelle.com
Thu Aug 25 16:17:58 CEST 2005
Alan DeKok wrote:
> Richard Cotrina <rcc at speedy.net.pe> wrote:
> > (gdb) display mysql_sock
> > 1: mysql_sock = (rlm_sql_mysql_sock *) 0x5f6c7173
> That's bad. That's very bad. It's the ASCII string "sql_",
> interpreted as a pointer on an x86 machine. No wonder it crashes.
> The short answer is that there appears to be some memory corruption.
> Can you print out the contents of "sqlsocket", too? Both the
> structure contents, and the *hex* contents of that area of memory.
> It looks like the sqlsocket pointer that's being passed is bad.
The infringing pointer "mysql_sock" contains the return value of
a "malloc" three lines above.
Perhaps something messed up the memory so badly that malloc returns
garbage. It's not easy to find out where the problem is : on my system
(Debian), I can run radiusd in valgrind with num_sql_socks = 20 and I
get no errors from valgrind.
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