- Catch unlikely NULL return from vmap() (Ruipeng Qi)
- Handle corner case of past incomplete buffer fills causing heap
overflow (Sai Ritvik Tanksalkar)
* tag 'pstore-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
pstore/ram: fix buffer overflow in persistent_ram_save_old()
pstore: ram_core: fix incorrect success return when vmap() fails