[Qemu-devel] [PATCH V2 5/5] Add infinite loop check in drive_init()

[Xu Wang]

Signed-off-by: Xu Wang <address@hidden>
---
 blockdev.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/blockdev.c b/blockdev.c
index 5975dde..0178764 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -695,6 +695,11 @@ DriveInfo *drive_init(QemuOpts *all_opts, 
BlockInterfaceType block_default_type)
         error_report("warning: disabling copy_on_read on readonly drive");
     }
 
+    /* Add backing file loop check */
+    if (bdrv_backing_file_loop_check(file, NULL, true, NULL, NULL)) {
+        goto err;
+    }
+
     ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv);
     bs_opts = NULL;
 
-- 
1.8.1.4