GnttabQueryReference() incorrectly checks for GTF_readonly

GTF_readonly should be checked in the 'flags' field, not 'frame'. This patch
fixes the issue.

Reported-by: Connor Davis <connojd@protonmail.com>
Signed-off-by: Paul Durrant <pdurrant@amazon.com>

diff --git a/src/xenbus/gnttab.c b/src/xenbus/gnttab.c
index e590a5c9a29b02b774b498f12eaf9c891f009a5e..3fe52aacf7ab73d8334e682c15a98f30ed56c17e 100644 (file)
--- a/src/xenbus/gnttab.c
+++ b/src/xenbus/gnttab.c
@@ -587,7 +587,7 @@ GnttabQueryReference(
         *Pfn = Context->Table[Reference].frame;
 
     if (ReadOnly != NULL)
-        *ReadOnly = (Context->Table[Reference].frame & GTF_readonly) ? TRUE : FALSE;
+        *ReadOnly = (Context->Table[Reference].flags & GTF_readonly) ? TRUE : FALSE;
 
     return STATUS_SUCCESS;