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![Ralph Campbell](https://secure.gravatar.com/avatar/d79fe6af4e2fa2967cb516bb01307039.jpg?s=96&d=mm)
Ralph Campbell committed 2e7e7c8f942
mm/migrate.c: initialize pud_entry in migrate_vma() [ Upstream commit 7b358c6f12dc82364f6d317f8c8f1d794adbc3f5 ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>