isofs: Annotate struct SL_component with __counted_by()

Add the __counted_by compiler attribute to the flexible array member
text 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: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240830164902.112682-2-thorsten.blum@toblux.com

diff --git a/fs/isofs/rock.h b/fs/isofs/rock.h
index ee9660e9671cbc403a5f1e25439b298a10d1915b..7755e587f77850caee00e16c4d807452b9e8dd32 100644 (file)
--- a/fs/isofs/rock.h
+++ b/fs/isofs/rock.h
@@ -44,7 +44,7 @@ struct RR_PN_s {
 struct SL_component {
        __u8 flags;
        __u8 len;
-       __u8 text[];
+       __u8 text[] __counted_by(len);
 } __attribute__ ((packed));
 
 struct RR_SL_s {