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affs: initialize fsdata in affs_truncate()

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[ 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: f2b6a16eb8 ("fs: affs convert to new aops")
Suggested-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Alexander Potapenko <glider@google.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alexander Potapenko
2023-01-10 13:49:30 +01:00
committed by Greg Kroah-Hartman
parent f6fa12fbb1
commit 39ab0fc498
1 changed files with 1 additions and 1 deletions
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2
fs/affs/file.c
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@@ -879,7 +879,7 @@ 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;