foo.diff

diff --git a/roots.cpp b/roots.cpp
index caf015f..4e6fc1d 100644
--- a/roots.cpp
+++ b/roots.cpp
@@ -232,8 +232,16 @@ fstab_rec* volume_for_path(const char* path) {
                         strcmp(rec->fs_type, "f2fs") == 0 ||
                         strcmp(rec->fs_type, "vfat") == 0)) {
         detected_fs_type = blkid_get_tag_value(NULL, "TYPE", rec->blk_device);
-        while (rec != NULL && strcmp(rec->fs_type, detected_fs_type) != 0) {
-            rec = fs_mgr_get_entry_for_mount_point_after(rec, fstab, path);
+        if (detected_fs_type != NULL) {
+            while (rec != NULL && strcmp(rec->fs_type, detected_fs_type) != 0) {
+                rec = fs_mgr_get_entry_for_mount_point_after(rec, fstab, path);
+            }
+            if (rec == NULL) {
+                /* We didn't find a better candidate, use old behavior
+                 * and pick the first response from fs_mgr.
+                 */
+                rec = fs_mgr_get_entry_for_mount_point(fstab, path);
+            }
         }
     }
     return rec;