[PATCH 6.1 051/313] affs: initialize fsdata in affs_truncate()

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From: Alexander Potapenko <glider@xxxxxxxxxx>

[ Upstream commit eef034ac6690118c88f357b00e2b3239c9d8575d ]

When aops->write_begin() does not initialize fsdata, KMSAN may report
an error passing the latter to aops->write_end().

Fix this by unconditionally initializing fsdata.

Fixes: f2b6a16eb8f5 ("fs: affs convert to new aops")
Suggested-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/affs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/affs/file.c b/fs/affs/file.c
index cefa222f7881..8daeed31e1af 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -880,7 +880,7 @@ affs_truncate(struct inode *inode)
 	if (inode->i_size > AFFS_I(inode)->mmu_private) {
 		struct address_space *mapping = inode->i_mapping;
 		struct page *page;
-		void *fsdata;
+		void *fsdata = NULL;
 		loff_t isize = inode->i_size;
 		int res;
 
-- 
2.39.0






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