diff --git a/lib_littlefs/lib_littlefs/api/lfs.h b/lib_littlefs/lib_littlefs/api/lfs.h
index 739fa30..ec81025 100644
--- a/lib_littlefs/lib_littlefs/api/lfs.h
+++ b/lib_littlefs/lib_littlefs/api/lfs.h
@@ -183,10 +183,12 @@ struct lfs_config {
 #ifdef LFS_THREADSAFE
     // Lock the underlying block device. Negative error codes
     // are propagated to the user.
+    LFS_FPTRGROUP("lfs_cfg_lock_fptr_grp")
     int (*lock)(const struct lfs_config *c);
 
     // Unlock the underlying block device. Negative error codes
     // are propagated to the user.
+    LFS_FPTRGROUP("lfs_cfg_unlock_fptr_grp")
     int (*unlock)(const struct lfs_config *c);
 #endif
 
diff --git a/lib_littlefs/lib_littlefs/api/lfs_util.h b/lib_littlefs/lib_littlefs/api/lfs_util.h
index 7102b69..a8985af 100644
--- a/lib_littlefs/lib_littlefs/api/lfs_util.h
+++ b/lib_littlefs/lib_littlefs/api/lfs_util.h
@@ -63,6 +63,13 @@ extern "C"
 #endif
 
 
+// xCORE fptrgroup attribute for stack analysis
+#ifdef __xcore__
+#define LFS_FPTRGROUP(name) __attribute__((fptrgroup(name)))
+#else
+#define LFS_FPTRGROUP(name)
+#endif
+
 // Macros, may be replaced by system specific wrappers. Arguments to these
 // macros must not have side-effects as the macros can be removed for a smaller
 // code footprint
diff --git a/lib_littlefs/lib_littlefs/src/lfs.c b/lib_littlefs/lib_littlefs/src/lfs.c
index 8ef1cfc..82ab063 100644
--- a/lib_littlefs/lib_littlefs/src/lfs.c
+++ b/lib_littlefs/lib_littlefs/src/lfs.c
@@ -593,6 +593,7 @@ static void lfs_fs_prepsuperblock(lfs_t *lfs, bool needssuperblock);
 
 #ifdef LFS_MIGRATE
 static int lfs1_traverse(lfs_t *lfs,
+        LFS_FPTRGROUP("lfs_traverse_cb_fptr_grp")
         int (*cb)(void*, lfs_block_t), void *data);
 #endif
 
@@ -5555,7 +5556,9 @@ static int lfs1_dir_next(lfs_t *lfs, lfs1_dir_t *dir, lfs1_entry_t *entry) {
 }
 
 /// littlefs v1 specific operations ///
-int lfs1_traverse(lfs_t *lfs, int (*cb)(void*, lfs_block_t), void *data) {
+int lfs1_traverse(lfs_t *lfs,
+        LFS_FPTRGROUP("lfs_traverse_cb_fptr_grp")
+        int (*cb)(void*, lfs_block_t), void *data) {
     if (lfs_pair_isnull(lfs->lfs1->root)) {
         return 0;
     }