--- zzzz-none-000/linux-5.4.213/fs/super.c 2022-09-15 10:04:56.000000000 +0000 +++ miami-7690-761/linux-5.4.213/fs/super.c 2024-05-29 11:20:02.000000000 +0000 @@ -1291,7 +1291,8 @@ bdev = blkdev_get_by_path(fc->source, mode, fc->fs_type); if (IS_ERR(bdev)) { - errorf(fc, "%s: Can't open blockdev", fc->source); + errorf(fc, "%s: Can't open blockdev, err: %ld", fc->source, + PTR_ERR(bdev)); return PTR_ERR(bdev); }