mm: Make mem_dump_obj() handle NULL and zero-sized pointers

This commit makes mem_dump_obj() call out NULL and zero-sized pointers
specially instead of classifying them as non-paged memory.

Cc: Christoph Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: <[email protected]>
Reported-by: Andrii Nakryiko <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Tested-by: Naresh Kamboju <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>

0 files changed, 0 insertions, 0 deletions