This patch fixes an off-by-one error that could lead to the
notifyee to receive notifications for ranges it is not
registered to.
The bug has been spotted by code review.
Fixes: bd2bfa4c52e5 ("memory: introduce memory_region_notify_one()")
Cc: [email protected]
Cc: Peter Xu <[email protected]>
Signed-off-by: Maxime Coquelin <[email protected]>
---
memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/memory.c b/memory.c
index 5e6351a6c1..b637c12bad 100644
--- a/memory.c
+++ b/memory.c
@@ -1892,7 +1892,7 @@ void memory_region_notify_one(IOMMUNotifier *notifier,
* Skip the notification if the notification does not overlap
* with registered range.
*/
- if (notifier->start > entry->iova + entry->addr_mask + 1 ||
+ if (notifier->start > entry->iova + entry->addr_mask ||
notifier->end < entry->iova) {
return;
}
--
2.13.6
