Drivers: hv: balloon: Fix a memory leak

The send buffer was being leaked; fix it.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Reported-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 13 insertions, 10 deletions

diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index b9bb8f4c1c39..dd289fd179ca 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -883,7 +883,7 @@ static int balloon_probe(struct hv_device *dev,
                         balloon_onchannelcallback, dev);
 
         if (ret)
-                return ret;
+                goto probe_error0;
 
         dm_device.dev = dev;
         dm_device.state = DM_INITIALIZING;
@@ -895,7 +895,7 @@ static int balloon_probe(struct hv_device *dev,
                  kthread_run(dm_thread_func, &dm_device, "hv_balloon");
         if (IS_ERR(dm_device.thread)) {
                 ret = PTR_ERR(dm_device.thread);
-                goto probe_error0;
+                goto probe_error1;
         }
 
         hv_set_drvdata(dev, &dm_device);
@@ -918,12 +918,12 @@ static int balloon_probe(struct hv_device *dev,
                                 VM_PKT_DATA_INBAND,
                                 VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
         if (ret)
-                goto probe_error1;
+                goto probe_error2;
 
         t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
         if (t == 0) {
                 ret = -ETIMEDOUT;
-                goto probe_error1;
+                goto probe_error2;
         }
 
         /*
@@ -932,7 +932,7 @@ static int balloon_probe(struct hv_device *dev,
          */
         if (dm_device.state == DM_INIT_ERROR) {
                 ret = -ETIMEDOUT;
-                goto probe_error1;
+                goto probe_error2;
         }
         /*
          * Now submit our capabilities to the host.
@@ -965,12 +965,12 @@ static int balloon_probe(struct hv_device *dev,
                                 VM_PKT_DATA_INBAND,
                                 VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
         if (ret)
-                goto probe_error1;
+                goto probe_error2;
 
         t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
         if (t == 0) {
                 ret = -ETIMEDOUT;
-                goto probe_error1;
+                goto probe_error2;
         }
 
         /*
@@ -979,18 +979,20 @@ static int balloon_probe(struct hv_device *dev,
          */
         if (dm_device.state == DM_INIT_ERROR) {
                 ret = -ETIMEDOUT;
-                goto probe_error1;
+                goto probe_error2;
         }
 
         dm_device.state = DM_INITIALIZED;
 
         return 0;
 
-probe_error1:
+probe_error2:
         kthread_stop(dm_device.thread);
 
-probe_error0:
+probe_error1:
         vmbus_close(dev->channel);
+probe_error0:
+        kfree(send_buffer);
         return ret;
 }
 
@@ -1003,6 +1005,7 @@ static int balloon_remove(struct hv_device *dev)
 
         vmbus_close(dev->channel);
         kthread_stop(dm->thread);
+        kfree(send_buffer);
 
         return 0;
 }