Lukas, Could you try to disable dynamic dns updates in domain section. > dyndns_update = false
I can do that. Would you like valgrind logs? Another coredump? And just to review, the crash happens only when 'dyndns_update_ptr' is true; the crash doesn't seem to be affected by the 'dyndns_update' option. -Chris On Wed, Aug 13, 2014 at 1:08 PM, Lukas Slebodnik <[email protected]> wrote: > On (13/08/14 11:12), Chris Hartman wrote: > >Greetings, > > > >Could you send me more coredumps privately with fuly updated ubuntu 14.04? > >> Because it really strange that sssd crashed in syscal fdatasync. > > > >Lukas, not a problem. Stand by for an email with a 7zip archive of a core > >dump and back trace. The debugging symbols for lib{tdb,ldb}1 were > installed > >for this. > > > >I have another idea which could help us to to find a problem. > >> We can try to run sssd_be with valgrind. > >> 1) we need to find out arguments for process sssd_be > >> sh-4.2$ pgrep -af sssd_be > >> 1191 /usr/libexec/sssd/sssd_be --domain idm.example.com > --debug-to-files > >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > >> this output will be used in sssd.conf > >> 2) add new option to domain section in sssd.conf > >> command = valgrind -v --show-reachable=yes > --log-file=/var/log/sssd/valgrind_idm.example.com.log > >> /usr/libexec/sssd/sssd_be --domain idm.example.com --debug-to-files > >> # do not forget to replace output from previous step. > >> > >> 3) It would be good to install debug symbols for libraries libtdb1 and > >> libldb1 > >> 4) reproduce problem > >> some interesting output can be in log file from valgrind. > > > > I did this with interesting(?) results. The sssd_be process never > actually > >crashed but there is some erroneous output in the valgrind log. Removing > >the special command option results in a crash as expected. I've sanitized > >and attached the log to this email. Let me know if that reveals anything. > > > Thank you very much for log files from valgrind. > There is use after free problem in dynamic dns updates code. > > Could you try to disable dynamic dns updates in domain section. > dyndns_update = false > > LS > _______________________________________________ > sssd-users mailing list > [email protected] > https://lists.fedorahosted.org/mailman/listinfo/sssd-users >
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