This is a note to let you know that I've just added the patch titled
tipc: ignore requests when the connection state is not CONNECTED
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tipc-ignore-requests-when-the-connection-state-is-not-connected.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Jun 15 16:35:05 CEST 2017
From: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@xxxxxxxxxxxx>
Date: Tue, 24 Jan 2017 13:00:47 +0100
Subject: tipc: ignore requests when the connection state is not CONNECTED
From: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@xxxxxxxxxxxx>
[ Upstream commit 4c887aa65d38633885010277f3482400681be719 ]
In tipc_conn_sendmsg(), we first queue the request to the outqueue
followed by the connection state check. If the connection is not
connected, we should not queue this message.
In this commit, we reject the messages if the connection state is
not CF_CONNECTED.
Acked-by: Ying Xue <ying.xue@xxxxxxxxxxxxx>
Acked-by: Jon Maloy <jon.maloy@xxxxxxxxxxxx>
Tested-by: John Thompson <thompa.atl@xxxxxxxxx>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/tipc/server.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
--- a/net/tipc/server.c
+++ b/net/tipc/server.c
@@ -458,6 +458,11 @@ int tipc_conn_sendmsg(struct tipc_server
if (!con)
return -EINVAL;
+ if (!test_bit(CF_CONNECTED, &con->flags)) {
+ conn_put(con);
+ return 0;
+ }
+
e = tipc_alloc_entry(data, len);
if (!e) {
conn_put(con);
@@ -471,12 +476,8 @@ int tipc_conn_sendmsg(struct tipc_server
list_add_tail(&e->list, &con->outqueue);
spin_unlock_bh(&con->outqueue_lock);
- if (test_bit(CF_CONNECTED, &con->flags)) {
- if (!queue_work(s->send_wq, &con->swork))
- conn_put(con);
- } else {
+ if (!queue_work(s->send_wq, &con->swork))
conn_put(con);
- }
return 0;
}
@@ -500,7 +501,7 @@ static void tipc_send_to_sock(struct tip
int ret;
spin_lock_bh(&con->outqueue_lock);
- while (1) {
+ while (test_bit(CF_CONNECTED, &con->flags)) {
e = list_entry(con->outqueue.next, struct outqueue_entry,
list);
if ((struct list_head *) e == &con->outqueue)
Patches currently in stable-queue which might be from parthasarathy.bhuvaragan@xxxxxxxxxxxx are
queue-4.9/tipc-fix-connection-refcount-error.patch
queue-4.9/tipc-fix-nametbl_lock-soft-lockup-at-node-link-events.patch
queue-4.9/tipc-ignore-requests-when-the-connection-state-is-not-connected.patch
queue-4.9/tipc-add-subscription-refcount-to-avoid-invalid-delete.patch