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Merge branch 'tipc-buffer-reassignment-fixes'

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Parthasarathy Bhuvaragan says:

====================
tipc: buffer reassignment fixes

This series contains fixes for buffer reassignments and a context imbalance.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-08-24 21:54:35 -07:00
commit c3d8d60e1e
2 changed files with 8 additions and 3 deletions
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7
net/tipc/msg.c
View File

@ -479,13 +479,14 @@ bool tipc_msg_make_bundle(struct sk_buff **skb, struct tipc_msg *msg,
bool tipc_msg_reverse(u32 own_node, struct sk_buff **skb, int err)
{
struct sk_buff *_skb = *skb;
struct tipc_msg *hdr = buf_msg(_skb);
struct tipc_msg *hdr;
struct tipc_msg ohdr;
int dlen = min_t(uint, msg_data_sz(hdr), MAX_FORWARD_SIZE);
int dlen;
if (skb_linearize(_skb))
goto exit;
hdr = buf_msg(_skb);
dlen = min_t(uint, msg_data_sz(hdr), MAX_FORWARD_SIZE);
if (msg_dest_droppable(hdr))
goto exit;
if (msg_errcode(hdr))
@ -511,6 +512,8 @@ bool tipc_msg_reverse(u32 own_node, struct sk_buff **skb, int err)
pskb_expand_head(_skb, BUF_HEADROOM, BUF_TAILROOM, GFP_ATOMIC))
goto exit;
/* reassign after skb header modifications */
hdr = buf_msg(_skb);
/* Now reverse the concerned fields */
msg_set_errcode(hdr, err);
msg_set_non_seq(hdr, 0);

4
net/tipc/node.c
View File

@ -1126,8 +1126,8 @@ int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 addr,
strncpy(linkname, tipc_link_name(link), len);
err = 0;
}
exit:
tipc_node_read_unlock(node);
exit:
tipc_node_put(node);
return err;
}
@ -1557,6 +1557,8 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b)
/* Check/update node state before receiving */
if (unlikely(skb)) {
if (unlikely(skb_linearize(skb)))
goto discard;
tipc_node_write_lock(n);
if (tipc_node_check_state(n, skb, bearer_id, &xmitq)) {
if (le->link) {