4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adrian Hunter <adrian.hunter@xxxxxxxxx> [ Upstream commit 3df94a5b1078dfe2b0c03f027d018800faf44c82 ] 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> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20240624201101.60186-5-adrian.hunter@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 8fc0ddc38cb69..a99713a883e9d 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -121,7 +121,7 @@ static inline unsigned long perf_data_size(struct ring_buffer *rb) static inline unsigned long perf_aux_size(struct ring_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, ...) \ -- 2.43.0