Check for a valid block device size

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/filesetup.c b/filesetup.c
index 464c0f2018f51672f88cdd2bd3ced44c8bceda4e..cfcfa9ae5e5f02398e25cbf49e14a9f033135686 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -156,6 +156,11 @@ static int bdev_size(struct thread_data *td, struct fio_file *f)
                return 1;
        }
 
+       if (!bytes) {
+               log_err("%s: zero sized block device?\n", f->file_name);
+               return 1;
+       }
+
        f->real_file_size = bytes;
        return 0;
 }