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-rwxr-xr-xtests/qemu-iotests/06011
1 files changed, 11 insertions, 0 deletions
diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060
index 8e95c45..dead26a 100755
--- a/tests/qemu-iotests/060
+++ b/tests/qemu-iotests/060
@@ -242,6 +242,17 @@ poke_file "$TEST_IMG" "$(($l2_offset+8))" "\x80\x00\x00\x00\x00\x06\x2a\x00"
# Should emit two error messages
$QEMU_IO -c "discard 0 64k" -c "read 64k 64k" "$TEST_IMG" | _filter_qemu_io
+echo
+echo "=== Testing empty refcount table with valid L1 and L2 tables ==="
+echo
+_make_test_img 64M
+$QEMU_IO -c "write 0 64k" "$TEST_IMG" | _filter_qemu_io
+poke_file "$TEST_IMG" "$rt_offset" "\x00\x00\x00\x00\x00\x00\x00\x00"
+# Since the first data cluster is already allocated this triggers an
+# allocation with an explicit offset (using qcow2_alloc_clusters_at())
+# causing a refcount block to be allocated at offset 0
+$QEMU_IO -c "write 0 128k" "$TEST_IMG" | _filter_qemu_io
+
# success, all done
echo "*** done"
rm -f $seq.full