[PATCH 1/3] kprobes: Annotate structs with __counted_by()

[Jinjie Ruan]

Add the __counted_by compiler attribute to the flexible array member
stripes to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
---
 kernel/kprobes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index da59c68df841..e6f7b0d3b29c 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -92,7 +92,7 @@ struct kprobe_insn_page {
 	struct kprobe_insn_cache *cache;
 	int nused;
 	int ngarbage;
-	char slot_used[];
+	char slot_used[] __counted_by(nused);
 };
 
 #define KPROBE_INSN_PAGE_SIZE(slots)			\
-- 
2.34.1