diff options
| -rw-r--r-- | net/tipc/bcast.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c index d9d848d488e..e5f3da50782 100644 --- a/net/tipc/bcast.c +++ b/net/tipc/bcast.c @@ -611,6 +611,7 @@ static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *p = bcbearer->bpairs[bp_index].primary; struct tipc_bearer *s = bcbearer->bpairs[bp_index].secondary; struct tipc_bearer *b = p; + struct sk_buff *tbuf; if (!p) break; /* No more bearers to try */ @@ -626,7 +627,17 @@ static int tipc_bcbearer_send(struct sk_buff *buf, if (bcbearer->remains_new.count == bcbearer->remains.count) continue; /* Nothing added by bearer pair */ - tipc_bearer_send(b, buf, &b->bcast_addr); + if (bp_index == 0) { + /* Use original buffer for first bearer */ + tipc_bearer_send(b, buf, &b->bcast_addr); + } else { + /* Avoid concurrent buffer access */ + tbuf = pskb_copy(buf, GFP_ATOMIC); + if (!tbuf) + break; + tipc_bearer_send(b, tbuf, &b->bcast_addr); + kfree_skb(tbuf); /* Bearer keeps a clone */ + } /* Swap bearers for next packet */ if (s) { |