[CRIU] regression with 8ffbe754bd9: rst: Lock rst memory allocations earlier

[Tycho Andersen]

Hi Pavel,

I'm seeing a regression with the patch in the subject, it does this
for a while:

(00.138425)    492: Error (rst-malloc.c:130): BUG at rst-malloc.c:130

And then eventually seg faults. Any ideas?

Tycho