From: Thorsten Blum <thorsten.blum@linux.dev>
To: Josh Poimboeuf <jpoimboe@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>, Kees Cook <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Thorsten Blum <thorsten.blum@linux.dev>,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: [PATCH] unwind deferred: Annotate struct unwind_cache with __counted_by
Date: Fri, 14 Nov 2025 13:27:47 +0100 [thread overview]
Message-ID: <20251114122748.222833-1-thorsten.blum@linux.dev> (raw)
Add the __counted_by() compiler attribute to the flexible array member
'entries' to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
include/linux/unwind_deferred_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/unwind_deferred_types.h b/include/linux/unwind_deferred_types.h
index 33b62ac25c86..d4b67f0116f3 100644
--- a/include/linux/unwind_deferred_types.h
+++ b/include/linux/unwind_deferred_types.h
@@ -5,7 +5,7 @@
struct unwind_cache {
unsigned long unwind_completed;
unsigned int nr_entries;
- unsigned long entries[];
+ unsigned long entries[] __counted_by(nr_entries);
};
/*
--
2.51.1
next reply other threads:[~2025-11-14 12:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-14 12:27 Thorsten Blum [this message]
2025-11-14 13:43 ` [PATCH] unwind deferred: Annotate struct unwind_cache with __counted_by Steven Rostedt
2025-11-14 13:53 ` Steven Rostedt
2025-11-14 14:57 ` Steven Rostedt
2025-11-14 15:02 ` David Laight
2025-11-14 15:48 ` Steven Rostedt
2025-11-14 14:31 ` David Laight
2025-11-14 14:56 ` Steven Rostedt
2025-11-14 15:49 ` Steven Rostedt
2025-11-14 15:53 ` Steven Rostedt
2025-11-14 16:15 ` Thorsten Blum
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