affs: struct affs_head: Replace 1-element array with flexible array

AFFS uses struct affs_head's "table" array as a flexible array. Switch
this to a proper flexible array[1]. There are no sizeof() uses; struct
affs_head is only ever uses via direct casts. No binary output
differences were found after this change.

Link: https://github.com/KSPP/linux/issues/79
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/affs/amigaffs.h b/fs/affs/amigaffs.h
index 81fb396d4dfa37fe7f4296e50751eb5ad1b797df..0f739ea56293c66a388b3cfe8c0acdaaad7ffa9c 100644 (file)
--- a/fs/affs/amigaffs.h
+++ b/fs/affs/amigaffs.h
@@ -80,7 +80,7 @@ struct affs_head {
        __be32 spare1;
        __be32 first_data;
        __be32 checksum;
-       __be32 table[1];
+       __be32 table[];
 };
 
 struct affs_tail {