From: Ramesh Nagappa <ramesh.naga...@ericsson.com>
The retry loop in neigh_resolve_output() and neigh_connected_output()
call dev_hard_header() with out reseting the skb to network_header.
This causes the retry to fail with skb_under_panic. The fix is to
reset the network_header within the retry loop.
Signed-off-by: Ramesh Nagappa <ramesh.naga...@ericsson.com>
Reviewed-by: Shawn Lu <shawn...@ericsson.com>
Reviewed-by: Robert Coulson <robert.coul...@ericsson.com>
Reviewed-by: Billie Alsup <billie.al...@ericsson.com>
---
net/core/neighbour.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 117afaf..f50c542 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1313,6 +1313,7 @@ int neigh_resolve_output(struct neighbour *neigh, struct
sk_buff *skb)
do {
seq = read_seqbegin(&neigh->ha_lock);
+ __skb_pull(skb, skb_network_offset(skb));
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
neigh->ha, NULL, skb->len);
} while (read_seqretry(&neigh->ha_lock, seq));
@@ -1342,10 +1343,9 @@ int neigh_connected_output(struct neighbour *neigh,
struct sk_buff *skb)
unsigned int seq;
int err;
- __skb_pull(skb, skb_network_offset(skb));
-
do {
seq = read_seqbegin(&neigh->ha_lock);
+ __skb_pull(skb, skb_network_offset(skb));
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
neigh->ha, NULL, skb->len);
} while (read_seqretry(&neigh->ha_lock, seq));
--
1.7.11.4
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