From: Bjorn Andersson bjorn.andersson@linaro.org
[ Upstream commit 73f0c11d11329a0d6d205d4312b6e5d2512af7c5 ]
As the endpoint is unregistered there might still be work pending to handle incoming messages, which will result in a use after free scenario. The plan is to remove the rx_worker, but until then (and for stable@) ensure that the work is stopped before the node is freed.
Fixes: bdabad3e363d ("net: Add Qualcomm IPC router") Cc: stable@vger.kernel.org Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Jakub Kicinski jakub.kicinski@netronome.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/qrtr/qrtr.c | 1 + 1 file changed, 1 insertion(+)
--- a/net/qrtr/qrtr.c +++ b/net/qrtr/qrtr.c @@ -157,6 +157,7 @@ static void __qrtr_node_release(struct k list_del(&node->item); mutex_unlock(&qrtr_node_lock);
+ cancel_work_sync(&node->work); skb_queue_purge(&node->rx_queue); kfree(node); }