Lockless access to __ptr_ring_full is only legal if ring is
never resized, otherwise it might cause use-after free errors.
Simply drop the lockless test, we'll drop the packet
a bit later when produce fails.
Fixes: 362899b8 ("macvtap: switch to use skb array")
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
drivers/net/tap.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/net/tap.c b/drivers/net/tap.c
index 7c38659..7787269 100644
--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -330,9 +330,6 @@ rx_handler_result_t tap_handle_frame(struct sk_buff **pskb)
if (!q)
return RX_HANDLER_PASS;
- if (__ptr_ring_full(&q->ring))
- goto drop;
-
skb_push(skb, ETH_HLEN);
/* Apply the forward feature mask so that we perform segmentation
--
MST
