From 86e92eeeb23741a072fe7532db663250ff2e726a Mon Sep 17 00:00:00 2001 From: Thorsten Blum Date: Sat, 24 Aug 2024 15:57:41 +0200 Subject: [PATCH] bcachefs: Annotate struct bch_xattr with __counted_by() Add the __counted_by compiler attribute to the flexible array member x_name to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Signed-off-by: Thorsten Blum Signed-off-by: Kent Overstreet --- fs/bcachefs/xattr_format.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/bcachefs/xattr_format.h b/fs/bcachefs/xattr_format.h index e9f810539552..c7916011ef34 100644 --- a/fs/bcachefs/xattr_format.h +++ b/fs/bcachefs/xattr_format.h @@ -13,7 +13,7 @@ struct bch_xattr { __u8 x_type; __u8 x_name_len; __le16 x_val_len; - __u8 x_name[]; + __u8 x_name[] __counted_by(x_name_len); } __packed __aligned(8); #endif /* _BCACHEFS_XATTR_FORMAT_H */