Samba 3.6.4 tdb question
Volker.Lendecke at SerNet.DE
Tue Jun 19 14:21:16 MDT 2012
On Tue, Jun 19, 2012 at 12:26:16PM -0700, Herb Lewis wrote:
> On 06/19/2012 10:59 AM, Herb Lewis wrote:
> >On 06/19/2012 10:33 AM, Jeremy Allison wrote:
> >>On Tue, Jun 19, 2012 at 10:31:05AM -0700, Herb Lewis wrote:
> >>>The file lib/tdb/common/tdb.c has a comment before the function
> >>>* DON'T CALL OTHER TDB CALLS FROM THE PARSER, THIS MIGHT LEAD
> >>>TO SEGFAULTS.
> >>>can someone explain exactly what this means? Exactly what calls are
> >>>not allowed?
> >>>I've run into a case where I get a segfault because tdb_parse_record
> >>>ends up calling
> >>>tdb_lock_list which then calls tdb_needs_recovery which tries to do
> >>>a tdb_read which
> >>>then gets a segfault. So it looks like I've hit this condition.
> >>Ooooh. That sounds interesting ! Can you post the
> >>stack backtrace ?
> >> Jeremy.
> >Unfortunately I don't have the offending tdb file but here is a
> >partial backtrace
In that backtrace I can't see anything suspicions from a
wrong use of tdb_parse_record, but I would not say I'm not
missing anything. In particular I don't see any recursive
call from db_tdb_fetch_parse back into tdb. This must be
something else as far as I can see.
More information about the samba-technical