Bug#895450: slapd: segfault in back_mdb

[Ryan Tandy]

On Thu, Dec 19, 2019 at 06:12:05PM +0100, wferi at niif.hu wrote:
>One and a half year later, and I've got a core dump!

Yay!

I guess the problem here is the "sml_next" value. I have not reproduced 
the crash yet, but for a start I am looking at "m2" on syncrepl.c:3236.

With your coredump, could you dig a little further into the two 
"sml_mod" structures and show their sm_desc/sm_values/sm_nvalues?

(For the "sm_op" values, 1 is LDAP_MOD_DELETE and 4096 is 
SLAP_MOD_SOFTADD.)

Also, if the frame is still valid, the contents of "dni" in 
syncrepl_entry (frame #4) would be useful too.

Thanks!