netpoll: zap_completion_queue: adjust skb->users counter
zap_completion_queue() retrieves skbs from completion_queue where they have
zero skb->users counter. Before dev_kfree_skb_any() it should be non-zero
yet, so it's increased now.
Reported-and-tested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 4b7e756..c635de5 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -215,10 +215,12 @@
while (clist != NULL) {
struct sk_buff *skb = clist;
clist = clist->next;
- if (skb->destructor)
+ if (skb->destructor) {
+ atomic_inc(&skb->users);
dev_kfree_skb_any(skb); /* put this one back */
- else
+ } else {
__kfree_skb(skb);
+ }
}
}