mm/migrate.c: initialize pud_entry in migrate_vma()
authorRalph Campbell <rcampbell@nvidia.com>
Sat, 3 Aug 2019 04:49:08 +0000 (21:49 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 3 Aug 2019 14:02:01 +0000 (07:02 -0700)
commit7b358c6f12dc82364f6d317f8c8f1d794adbc3f5
tree5cb79e5f2eec3952ece6881f28fe09194da02433
parent315c69261dd3fa12dbc830d4fa00d1fad98d3b03
mm/migrate.c: initialize pud_entry in migrate_vma()

When CONFIG_MIGRATE_VMA_HELPER is enabled, migrate_vma() calls
migrate_vma_collect() which initializes a struct mm_walk but didn't
initialize mm_walk.pud_entry.  (Found by code inspection) Use a C
structure initialization to make sure it is set to NULL.

Link: http://lkml.kernel.org/r/20190719233225.12243-1-rcampbell@nvidia.com
Fixes: 8763cb45ab967 ("mm/migrate: new memory migration helper for use with device memory")
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/migrate.c