diff --git a/fs/binfs/fs_binfs.c b/fs/binfs/fs_binfs.c
index 92e7dc3bbe..31635b123b 100644
--- a/fs/binfs/fs_binfs.c
+++ b/fs/binfs/fs_binfs.c
@@ -449,7 +449,6 @@ static int binfs_statfs(struct inode *mountpt, struct statfs *buf)
 
   /* Fill in the statfs info */
 
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = BINFS_MAGIC;
   buf->f_bsize   = 0;
   buf->f_blocks  = 0;
diff --git a/fs/cromfs/fs_cromfs.c b/fs/cromfs/fs_cromfs.c
index a36be7783c..03e60a9470 100644
--- a/fs/cromfs/fs_cromfs.c
+++ b/fs/cromfs/fs_cromfs.c
@@ -1467,7 +1467,6 @@ static int cromfs_statfs(struct inode *mountpt, struct statfs *buf)
 
   /* Fill in the statfs info. */
 
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = CROMFS_MAGIC;
   buf->f_namelen = NAME_MAX;
   buf->f_bsize   = fs->cv_bsize;
diff --git a/fs/fat/fs_fat32.c b/fs/fat/fs_fat32.c
index ae182fed7a..7f30d6d570 100644
--- a/fs/fat/fs_fat32.c
+++ b/fs/fat/fs_fat32.c
@@ -2333,7 +2333,6 @@ static int fat_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
 
   /* Fill in the statfs info */
 
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = MSDOS_SUPER_MAGIC;
 
   /* We will claim that the optimal transfer size is the size of a cluster
diff --git a/fs/hostfs/hostfs.c b/fs/hostfs/hostfs.c
index f7c4a70886..43da3eb4a2 100644
--- a/fs/hostfs/hostfs.c
+++ b/fs/hostfs/hostfs.c
@@ -1161,7 +1161,6 @@ static int hostfs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
 
   /* Call the host fs to perform the statfs */
 
-  memset(buf, 0, sizeof(struct statfs));
   ret = host_statfs(fs->fs_root, buf);
   buf->f_type = HOSTFS_MAGIC;
 
diff --git a/fs/littlefs/lfs_vfs.c b/fs/littlefs/lfs_vfs.c
index d245d4b5e5..332d3da59c 100644
--- a/fs/littlefs/lfs_vfs.c
+++ b/fs/littlefs/lfs_vfs.c
@@ -1242,7 +1242,6 @@ static int littlefs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
 
   /* Return something for the file system description */
 
-  memset(buf, 0, sizeof(*buf));
   buf->f_type    = LITTLEFS_SUPER_MAGIC;
   buf->f_namelen = LFS_NAME_MAX;
   buf->f_bsize   = fs->cfg.block_size;
diff --git a/fs/mount/fs_foreachmountpoint.c b/fs/mount/fs_foreachmountpoint.c
index 2508d498ea..7214228bc0 100644
--- a/fs/mount/fs_foreachmountpoint.c
+++ b/fs/mount/fs_foreachmountpoint.c
@@ -100,6 +100,7 @@ static int mountpoint_filter(FAR struct inode *node,
 
       /* Get the status of the file system */
 
+      memset(&statbuf, 0, sizeof(struct statfs));
       if (node->u.i_mops->statfs(node, &statbuf) == OK)
         {
           /* And pass the full path and file system status to the handler */
diff --git a/fs/nxffs/nxffs_stat.c b/fs/nxffs/nxffs_stat.c
index d6cce51b52..1cd5ea453e 100644
--- a/fs/nxffs/nxffs_stat.c
+++ b/fs/nxffs/nxffs_stat.c
@@ -74,7 +74,6 @@ int nxffs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
    * REVISIT: Need f_bfree, f_bavail, f_files, f_ffree calculation
    */
 
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = NXFFS_MAGIC;
   buf->f_bsize   = volume->geo.blocksize;
   buf->f_blocks  = volume->nblocks;
diff --git a/fs/procfs/fs_procfs.c b/fs/procfs/fs_procfs.c
index 5065108904..be5bd26078 100644
--- a/fs/procfs/fs_procfs.c
+++ b/fs/procfs/fs_procfs.c
@@ -1005,7 +1005,6 @@ static int procfs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
 {
   /* Fill in the statfs info */
 
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = PROCFS_MAGIC;
   buf->f_bsize   = 0;
   buf->f_blocks  = 0;
diff --git a/fs/romfs/fs_romfs.c b/fs/romfs/fs_romfs.c
index eda870dc04..bd1bc2f03a 100644
--- a/fs/romfs/fs_romfs.c
+++ b/fs/romfs/fs_romfs.c
@@ -1260,7 +1260,6 @@ static int romfs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
 
   /* Fill in the statfs info */
 
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = ROMFS_MAGIC;
 
   /* We will claim that the optimal transfer size is the size of one sector */
diff --git a/fs/rpmsgfs/rpmsgfs.c b/fs/rpmsgfs/rpmsgfs.c
index d46a2c0e84..96f26d27fb 100644
--- a/fs/rpmsgfs/rpmsgfs.c
+++ b/fs/rpmsgfs/rpmsgfs.c
@@ -1234,7 +1234,6 @@ static int rpmsgfs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
 
   /* Call the host fs to perform the statfs */
 
-  memset(buf, 0, sizeof(struct statfs));
   ret = rpmsgfs_client_statfs(fs->handle, fs->fs_root, buf);
   buf->f_type = RPMSGFS_MAGIC;
 
diff --git a/fs/smartfs/smartfs_smart.c b/fs/smartfs/smartfs_smart.c
index 3c6ea1fad4..c65ce85d3b 100644
--- a/fs/smartfs/smartfs_smart.c
+++ b/fs/smartfs/smartfs_smart.c
@@ -1610,7 +1610,6 @@ static int smartfs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
 
   /* Implement the logic!! */
 
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type = SMARTFS_MAGIC;
 
   /* Re-request the low-level format info to update free blocks */
diff --git a/fs/unionfs/fs_unionfs.c b/fs/unionfs/fs_unionfs.c
index a7ab19002e..d6c732e021 100644
--- a/fs/unionfs/fs_unionfs.c
+++ b/fs/unionfs/fs_unionfs.c
@@ -2045,8 +2045,6 @@ static int unionfs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
   DEBUGASSERT(mountpt != NULL && mountpt->i_private != NULL && buf != NULL);
   ui = (FAR struct unionfs_inode_s *)mountpt->i_private;
 
-  memset(buf, 0, sizeof(struct statfs));
-
   /* Get statfs info from file system 1.
    *
    * REVISIT: What would it mean if one file system did not support statfs?
@@ -2064,6 +2062,8 @@ static int unionfs_statfs(FAR struct inode *mountpt, FAR struct statfs *buf)
               um2->um_node->u.i_mops != NULL);
   ops2 = um2->um_node->u.i_mops;
 
+  memset(&buf1, 0, sizeof(struct statfs));
+  memset(&buf2, 0, sizeof(struct statfs));
   if (ops1->statfs != NULL && ops2->statfs != NULL)
     {
       ret = ops1->statfs(um1->um_node, &buf1);
diff --git a/fs/vfs/fs_fstatfs.c b/fs/vfs/fs_fstatfs.c
index d5b31ac400..ce010110cc 100644
--- a/fs/vfs/fs_fstatfs.c
+++ b/fs/vfs/fs_fstatfs.c
@@ -104,6 +104,7 @@ int fstatfs(int fd, FAR struct statfs *buf)
         {
           /* Perform the statfs() operation */
 
+          memset(buf, 0, sizeof(struct statfs));
           ret = inode->u.i_mops->statfs(inode, buf);
         }
     }
diff --git a/fs/vfs/fs_statfs.c b/fs/vfs/fs_statfs.c
index 1d6050c2f7..ae08d1a2ae 100644
--- a/fs/vfs/fs_statfs.c
+++ b/fs/vfs/fs_statfs.c
@@ -43,7 +43,6 @@
 
 static int statpseudofs(FAR struct inode *inode, FAR struct statfs *buf)
 {
-  memset(buf, 0, sizeof(struct statfs));
   buf->f_type    = PROC_SUPER_MAGIC;
   buf->f_namelen = NAME_MAX;
   return OK;
@@ -113,6 +112,7 @@ int statfs(FAR const char *path, FAR struct statfs *buf)
    * are dealing with.
    */
 
+  memset(buf, 0, sizeof(struct statfs));
 #ifndef CONFIG_DISABLE_MOUNTPOINT
   if (INODE_IS_MOUNTPT(inode))
     {
diff --git a/libs/libc/userfs/lib_userfs.c b/libs/libc/userfs/lib_userfs.c
index 3a73670cc5..6ff6d6c83c 100644
--- a/libs/libc/userfs/lib_userfs.c
+++ b/libs/libc/userfs/lib_userfs.c
@@ -588,6 +588,7 @@ static inline int userfs_statfs_dispatch(FAR struct userfs_info_s *info,
   /* Dispatch the request */
 
   DEBUGASSERT(info->userops != NULL && info->userops->statfs != NULL);
+  memset(&resp.buf, 0, sizeof(struct statfs));
   resp.ret  = info->userops->statfs(info->volinfo, &resp.buf);
 
   /* Send the response */