Re: (ITS#6221) slapd segfault in SSL_CTX_set_info_callback

[hyc@symas.com]

Steve Paras-Charlton wrote:
>
> I tried re-compiling with CC="gcc -g" and got the following backtrace
> from gdb:
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 1]
> 0xd26d07d0 in SSL_CTX_set_info_callback ()
>
> from /LDAP/build/openldap-2.4.16/libraries/libldap_r/.libs/libldap_r.a(libldap_r-2.4.so.2)
> (gdb) bt
> #0  0xd26d07d0 in SSL_CTX_set_info_callback ()
>
> from /LDAP/build/openldap-2.4.16/libraries/libldap_r/.libs/libldap_r.a(libldap_r-2.4.so.2)
> #1  0xd26cdedc in tlso_ctx_init (lo=0x200c087c, lt=0x2ff22970,
> is_server=1) at tls_o.c:320
> #2  0xd26ca50c in ldap_int_tls_init_ctx (lo=0x200c087c, is_server=1) at
> tls2.c:245
> #3  0xd26cc1cc in ldap_pvt_tls_set_option (ld=0x200c0878, option=24591,
> arg=0x2ff22ae8) at tls2.c:800
> #4  0x10001f90 in main (argc=9, argv=0x2ff22b94) at main.c:826
>
> This one seems much more useful from a debugging perspective.
>
> I noticed that the configure program has some options along the lines of
> "--with-PIC" which defaults to "both PIC and non-PIC".  Could I use this
> to help debug the issue perhaps?  How would I use it (not sure what
> options it takes).

This trace is the kind that we would normally look for, yes. But the crash is 
in an OpenSSL function, and you haven't got debug symbols for that since you 
haven't recompiled that yet. Anyway, it still has nothing to do with OpenLDAP, 
your OpenSSL library is broken. Since this is not an OpenLDAP bug this ITS 
will be closed.

-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/