From: Thorsten Blum <thorsten.blum@toblux.com>
Date: Fri, 30 Aug 2024 16:49:03 +0000 (+0200)
Subject: isofs: Annotate struct SL_component with __counted_by()
X-Git-Tag: v6.12-rc1~100^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=116249b12939a8ec13eb50f36b6fffd1c719a9ed;p=thirdparty%2Fkernel%2Flinux.git

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 ee9660e9671cb..7755e587f7785 100644
--- 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 {