[win-pv-devel] [PATCH] Don't trust the integrity of the shared rings after migration

[Paul Durrant <pdurrant@xxxxxxxxx>]

Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
---
 src/xenvif/transmitter.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/xenvif/transmitter.c b/src/xenvif/transmitter.c
index b833ab6..a915d73 100644
--- a/src/xenvif/transmitter.c
+++ b/src/xenvif/transmitter.c
@@ -1949,7 +1949,9 @@ __TransmitterRingFakeResponses(
 
     KeMemoryBarrier();
 
-    rsp_prod = Ring->Shared->rsp_prod;
+    // We can't trust anything in the shared ring
+    SHARED_RING_INIT(Ring->Shared);
+    rsp_prod = Ring->Front.rsp_cons;
 
     KeMemoryBarrier();
 
-- 
2.1.1


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