Comment # 15 on bug 1206359 from Jiri Slaby

(In reply to Jiri Slaby from comment #14)
> And that does pwrite(), mmap() and mremap() internally.

And the winner is:
[   30s] error: remapslot (223): mapmem(old=0xffffffffffffffff, osz=1056768,
nsz=1060864, fl=3, fd=4, off=868352) failed 12

i.e. mremap fails with ENOMEM. Vlasta, any ideas?