On Fri, Aug 08, 2014 at 06:49:56PM +0200, Lukas Slebodnik wrote: > On (07/08/14 14:57), Chris Hartman wrote: > >Sorry it's been so long since my original email. Life happens sometimes. At > >any rate, I'm able to continue with debugging now. > > > >First off, thanks to Timo and Lukas for their help! I was able to generate > >the backtrace and core dump file as Jakub suggested. Since it may contain > >sensitive data, I will email him the files directly. > > > >Jakub, look for an email from my momentarily. Thanks for taking the time to > >help me out! > > > > [New LWP 32083] > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". > Core was generated by `/usr/lib/i386-linux-gnu/sssd/sssd_be'. > #0 0xb775d424 in __kernel_vsyscall () > (gdb) bt > #0 0xb775d424 in __kernel_vsyscall () > #1 0xb7520d7c in __fdatasync_nocancel () at > ../sysdeps/unix/syscall-template.S:81 > #2 0xb6af2be5 in transaction_sync (tdb=0x8b2a138, offset=53268, length=4) at > ../common/transaction.c:548 > #3 0xb6af2d9e in _tdb_transaction_cancel (tdb=0x8b2a138) at > ../common/transaction.c:603 > #4 0xb6af3c95 in tdb_transaction_commit (tdb=0x8b2a138) at > ../common/transaction.c:1161 > #5 0xb6b172d5 in ltdb_end_trans (module=0x8b2b9b0) at > ../ldb_tdb/ldb_tdb.c:1141 > #6 0xb770aedf in ldb_transaction_commit (ldb=ldb@entry=0x8b20a78) at > ../common/ldb.c:467 > #7 0xb770be49 in ldb_autotransaction_request (ldb=0x8b20a78, req=0x8b38500) > at ../common/ldb.c:563 > #8 0xb770ca43 in ldb_modify (ldb=0x8b20a78, message=message@entry=0x8b49380) > at ../common/ldb.c:1641 > > I am not really sure why but crash is in syscall fdatasync. > As you can see, top 9 frames are from libraries libldb and libtdb. > If it is a easy to reproduce could you try to mount tmpfs to the directory > /var/lib/sss/db/. It can be filesystem issue. > > tmpfs /var/lib/sss/db/ tmpfs size=300M,mode=0700,noauto 0 0 >
Thanks for looking into this! Did you notice anything strange about the ldb_message in frame 8? That's the only thing I can think of that we might influence. Do you know if Ubuntu uses the latest tdb and ldb versions? _______________________________________________ sssd-users mailing list [email protected] https://lists.fedorahosted.org/mailman/listinfo/sssd-users
