Commit 105f5687 authored by Leo Yan's avatar Leo Yan Committed by Will Deacon
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coresight: trbe: Prevent overflow in PERF_IDX2OFF() 



Cast nr_pages to unsigned long to avoid overflow when handling large
AUX buffer sizes (>= 2 GiB).

Fixes: 3fbf7f01 ("coresight: sink: Add TRBE driver")
Signed-off-by: default avatarLeo Yan <leo.yan@arm.com>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 542342d2

drivers/hwtracing/coresight/coresight-trbe.c

+2 −1
Original line number Diff line number Diff line
@@ -23,7 +23,8 @@ 
#include "coresight-self-hosted-trace.h"

#include "coresight-trbe.h"



#define PERF_IDX2OFF(idx, buf) ((idx) % ((buf)->nr_pages << PAGE_SHIFT))

#define PERF_IDX2OFF(idx, buf) \

	((idx) % ((unsigned long)(buf)->nr_pages << PAGE_SHIFT))



/*

 * A padding packet that will help the user space tools