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bcachefs: Annotate struct bch_xattr with __counted_by()

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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 <thorsten.blum@toblux.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Thorsten Blum 2024-08-24 15:57:41 +02:00 • committed by Kent Overstreet
parent 2c6a7bff2a
commit 86e92eeeb2
1 changed files with 1 additions and 1 deletions
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fs/bcachefs/xattr_format.h
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@ -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 */