1 files changed, 2 insertions, 0 deletions
diff --git a/block/bochs.c b/block/bochs.c
index 3c2f8d1b12..b0f80729fe 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -80,6 +80,7 @@ struct bochs_header {
 };
 
 typedef struct BDRVBochsState {
+    CoMutex lock;
     uint32_t *catalog_bitmap;
     int catalog_size;
 
@@ -150,6 +151,7 @@ static int bochs_open(BlockDriverState *bs, int flags)
 
     s->extent_size = le32_to_cpu(bochs.extra.redolog.extent);
 
+    qemu_co_mutex_init(&s->lock);
     return 0;
  fail:
     return -1;