olivier.chirossel@sfr.com wrote:

Thanks for the report. I've reproduced the bug; it appears to be inside=20 slapo-rwm(5). The core dump is related to a double free, which I'm=20 trying to track.

Please test the latest commit of overlays/rwm.c (should apply fine to 2.4.23) and report. It fixes the double free.

With respect to your problem description, "lastmod off" means that the backend will not *generate* modification-related operational attributes; however they are proxied. Moreover, you can't strip them off with mapping unless the remapping is part of a replication process (i.e. the backend contains syncrepl or "updatedn" is set and the operation is performed with that identity).

p.