This is a (very) late reply from upstream. Sorry for the delay. I hoped somebody else would care because I had no 32-bit testing system.
Now I have upgraded an old Thinkpad from Jessie to Stretch installed davfs2-1.5.2-1.2 from Sid and tested. Result: Works as expected; no stack smashing error. I can't reproduce the problem. Could you please verify that the problem still exists, probably after updating your system and checking for possible inconsistencies? Werner
