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-rw-r--r--drivers/net/r8169.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 45864461aab..1f7fb541ec5 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -2040,10 +2040,12 @@ static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
{
u32 cur;
- for (cur = start; end - cur > 0; cur++) {
+ for (cur = start; end - cur != 0; cur++) {
struct sk_buff *skb;
unsigned int i = cur % NUM_RX_DESC;
+ WARN_ON((s32)(end - cur) < 0);
+
if (tp->Rx_skbuff[i])
continue;