| Message ID | 20250305123134.215577-2-thorsten.blum@linux.dev (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] perf/x86: Annotate struct bts_buffer with __counted_by() | expand |
diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c index 8f78b0c900ef..c7be60c0b94f 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;
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@linux.dev> --- Changes in v2: - struct_size() changes should be a separate patch as suggested by Ingo - Link to v1: https://lore.kernel.org/r/20250304183056.78920-2-thorsten.blum@linux.dev/ --- arch/x86/events/intel/bts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)