[patch -mm] mm, mempool: poison elements backed by page allocator fix fix

Elements backed by the page allocator might not be directly mapped into lowmem, so do k{,un}map_atomic() before poisoning and verifying contents to map into lowmem and return the virtual adddress. Reported-by: Andrey Ryabinin Signed-off-by: David Rientjes --- mm/mempool.c | 6 -- 1 file

[patch -mm] mm, mempool: poison elements backed by page allocator fix fix

Elements backed by the page allocator might not be directly mapped into lowmem, so do k{,un}map_atomic() before poisoning and verifying contents to map into lowmem and return the virtual adddress. Reported-by: Andrey Ryabinin a.ryabi...@samsung.com Signed-off-by: David Rientjes