Bug was added in commit v3.0-7291-g8079b1c (mm: clarify the radix_tree exceptional cases) So, v3.1 and v3.2 affected. Konstantin Khlebnikov wrote:
It should return NULL, otherwise the caller will be very surprised. Signed-off-by: Konstantin Khlebnikov<khlebnikov@xxxxxxxxxx> --- mm/filemap.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index 518223b..ca98cb5 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -693,6 +693,7 @@ repeat: * here as an exceptional entry: so return it without * attempting to raise page count. */ + page = NULL; goto out; } if (!page_cache_get_speculative(page))
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