xfs: convert flex-array declarations in xfs attr shortform objects

Source kernel commit: f6250e205691a58c81be041b1809a2e706852641

As of 6.5-rc1, UBSAN trips over the ondisk extended attribute shortform
definitions using an array length of 1 to pretend to be a flex array.
Kernel compilers have to support unbounded array declarations, so let's
correct this.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

diff --git a/libxfs/xfs_da_format.h b/libxfs/xfs_da_format.h
index b2362717c42ed85395d9592c1edfbc05c59ea83e..f9015f88eca70679e6a5e915f43eddaf0cb6a299 100644 (file)
--- a/libxfs/xfs_da_format.h
+++ b/libxfs/xfs_da_format.h
@@ -591,7 +591,7 @@ struct xfs_attr_shortform {
                uint8_t valuelen;       /* actual length of value (no NULL) */
                uint8_t flags;  /* flags bits (see xfs_attr_leaf.h) */
                uint8_t nameval[];      /* name & value bytes concatenated */
-       } list[1];                      /* variable sized array */
+       } list[];                       /* variable sized array */
 };
 
 typedef struct xfs_attr_leaf_map {     /* RLE map of free bytes */