From: Kees Cook kees@kernel.org
[ Upstream commit 6f9a8ab796c6528d22de3c504c81fce7dde63d8a ]
In preparation for making the kmalloc() family of allocators type aware, we need to make sure that the returned type from the allocation matches the type of the variable being assigned. (Before, the allocator would always return "void *", which can be implicitly cast to any pointer type.)
The assigned type is "struct folio **" but the returned type will be "struct page **". These are the same allocation size (pointer size), but the types don't match. Adjust the allocation type to match the assignment.
Reviewed-by: Qu Wenruo wqu@suse.com Signed-off-by: Kees Cook kees@kernel.org Reviewed-by: David Sterba dsterba@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/btrfs/compression.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 0c4d486c3048d..18d2210dc7249 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -606,7 +606,7 @@ void btrfs_submit_compressed_read(struct btrfs_bio *bbio) free_extent_map(em);
cb->nr_folios = DIV_ROUND_UP(compressed_len, PAGE_SIZE); - cb->compressed_folios = kcalloc(cb->nr_folios, sizeof(struct page *), GFP_NOFS); + cb->compressed_folios = kcalloc(cb->nr_folios, sizeof(struct folio *), GFP_NOFS); if (!cb->compressed_folios) { ret = BLK_STS_RESOURCE; goto out_free_bio;