[PATCH 4/7] perf: Fix perf_aux_size() for greater-than 32-bit size

From: Adrian Hunter
Date: Mon Jun 24 2024 - 16:12:33 EST


perf_buffer->aux_nr_pages uses a 32-bit type, so a cast is needed to
calculate a 64-bit size.

Fixes: 45bfb2e50471 ("perf: Add AUX area to ring buffer for raw data streams")
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
kernel/events/internal.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 5150d5f84c03..386d21c7edfa 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -128,7 +128,7 @@ static inline unsigned long perf_data_size(struct perf_buffer *rb)

static inline unsigned long perf_aux_size(struct perf_buffer *rb)
{
- return rb->aux_nr_pages << PAGE_SHIFT;
+ return (unsigned long)rb->aux_nr_pages << PAGE_SHIFT;
}

#define __DEFINE_OUTPUT_COPY_BODY(advance_buf, memcpy_func, ...) \
--
2.34.1