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

Message ID 20240813115334.3922580-2-ruanjinjie@huawei.com (mailing list archive)
State New
Headers show
Series kprobes: Annotate structs with __counted_by() | expand

Commit Message

Jinjie Ruan Aug. 13, 2024, 11:53 a.m. UTC 
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@huawei.com>
---
 kernel/kprobes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

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)			\