The following commit has been merged into the perf/core branch of tip:
Commit-ID: 5e7adc81ae1b27ff565714d2933b291cf1e1271f
Gitweb: https://git.kernel.org/tip/5e7adc81ae1b27ff565714d2933b291cf1e1271f
Author: Thorsten Blum <thorsten.blum@xxxxxxxxx>
AuthorDate: Wed, 05 Mar 2025 13:31:34 +01:00
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Wed, 05 Mar 2025 18:28:22 +01:00
perf/x86: Annotate struct bts_buffer::buf with __counted_by()
Add the __counted_by() compiler attribute to the flexible array member
buf to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
No functional changes intended.
Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20250305123134.215577-2-thorsten.blum@xxxxxxxxx
---
arch/x86/events/intel/bts.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c
index 8e09319..953868d 100644
--- a/arch/x86/events/intel/bts.c
+++ b/arch/x86/events/intel/bts.c
@@ -58,7 +58,7 @@ struct bts_buffer {
local_t head;
unsigned long end;
void **data_pages;
- struct bts_phys buf[];
+ struct bts_phys buf[] __counted_by(nr_bufs);
};
static struct pmu bts_pmu;
|