diff --git a/0001-Open-Unix.LargeFile-to-avoid-lstat-Value-too-large-f.patch b/0001-Open-Unix.LargeFile-to-avoid-lstat-Value-too-large-f.patch
new file mode 100644
index 0000000..c5d4ea3
--- /dev/null
+++ b/0001-Open-Unix.LargeFile-to-avoid-lstat-Value-too-large-f.patch
@@ -0,0 +1,180 @@
+From fd9f17c7eb63979af882533a0d234bfc8ca42de3 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Mon, 1 Feb 2021 10:07:02 +0000
+Subject: [PATCH] Open Unix.LargeFile to avoid "lstat: Value too large for
+ defined data type".
+
+On 32 bit platforms, because OCaml native ints are limited to 31 bits,
+there is a trap in the normal Unix.stat, Unix.lstat functions where
+any field in the stat struct may overflow.  The result is random
+errors like:
+
+  supermin: error: lstat: Value too large for defined data type: /tmp/tmp.Ss9aYEBASm/d2/root
+
+You would probably only see this on armv7.
+
+The OCaml Unix module has a "LargeFile" submodule which fixes this by
+using int64 for some (unfortunately not all) fields.
+
+For more information see the OCaml sources, file
+otherlibs/unix/stat.c, all instances of "EOVERFLOW".
+---
+ src/format_chroot.ml      | 1 +
+ src/format_ext2.ml        | 1 +
+ src/format_ext2_initrd.ml | 1 +
+ src/format_ext2_kernel.ml | 5 +++--
+ src/mode_build.ml         | 1 +
+ src/package_handler.ml    | 1 +
+ src/ph_dpkg.ml            | 1 +
+ src/ph_pacman.ml          | 1 +
+ src/ph_rpm.ml             | 1 +
+ src/supermin.ml           | 1 +
+ src/utils.ml              | 1 +
+ 11 files changed, 13 insertions(+), 2 deletions(-)
+
+diff --git a/src/format_chroot.ml b/src/format_chroot.ml
+index 346c24b..34606f7 100644
+--- a/src/format_chroot.ml
++++ b/src/format_chroot.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/format_ext2.ml b/src/format_ext2.ml
+index 6348c29..e311ea6 100644
+--- a/src/format_ext2.ml
++++ b/src/format_ext2.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/format_ext2_initrd.ml b/src/format_ext2_initrd.ml
+index 38977e6..6268442 100644
+--- a/src/format_ext2_initrd.ml
++++ b/src/format_ext2_initrd.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/format_ext2_kernel.ml b/src/format_ext2_kernel.ml
+index 98bff3a..3be4413 100644
+--- a/src/format_ext2_kernel.ml
++++ b/src/format_ext2_kernel.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+@@ -95,8 +96,8 @@ and find_kernel_from_lib_modules debug =
+     let kernels =
+       filter_map (
+         fun kernel_file ->
+-          let size = try (stat kernel_file).st_size with Unix_error _ -> 0 in
+-          if size < 10000 then None
++          let size = try (stat kernel_file).st_size with Unix_error _ -> 0L in
++          if size < 10000_L then None
+           else (
+             let kernel_name = Filename.basename kernel_file in
+             let modpath = Filename.dirname kernel_file in
+diff --git a/src/mode_build.ml b/src/mode_build.ml
+index ed47366..ff7733e 100644
+--- a/src/mode_build.ml
++++ b/src/mode_build.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/package_handler.ml b/src/package_handler.ml
+index 0409438..f0d6db3 100644
+--- a/src/package_handler.ml
++++ b/src/package_handler.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/ph_dpkg.ml b/src/ph_dpkg.ml
+index 1e785de..6d4fce1 100644
+--- a/src/ph_dpkg.ml
++++ b/src/ph_dpkg.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/ph_pacman.ml b/src/ph_pacman.ml
+index 67f7512..50500a5 100644
+--- a/src/ph_pacman.ml
++++ b/src/ph_pacman.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/ph_rpm.ml b/src/ph_rpm.ml
+index 9745efd..183b5f3 100644
+--- a/src/ph_rpm.ml
++++ b/src/ph_rpm.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Utils
+diff --git a/src/supermin.ml b/src/supermin.ml
+index e923111..9f838d9 100644
+--- a/src/supermin.ml
++++ b/src/supermin.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ open Types
+diff --git a/src/utils.ml b/src/utils.ml
+index b25df88..f5990ef 100644
+--- a/src/utils.ml
++++ b/src/utils.ml
+@@ -17,6 +17,7 @@
+  *)
+ 
+ open Unix
++open Unix.LargeFile
+ open Printf
+ 
+ let (+^) = Int64.add
+-- 
+2.29.0.rc2
+
diff --git a/supermin.spec b/supermin.spec
index f94fa2b..7c394c9 100644
--- a/supermin.spec
+++ b/supermin.spec
@@ -40,6 +40,9 @@ Source1:       http://download.libguestfs.org/supermin/%{source_directory}/%{nam
 # Keyring used to verify tarball signature.
 Source2:       libguestfs.keyring
 
+# Upstream fix for stat field overflow on armv7.
+Patch1:        0001-Open-Unix.LargeFile-to-avoid-lstat-Value-too-large-f.patch
+
 BuildRequires: make
 BuildRequires: /usr/bin/pod2man
 BuildRequires: /usr/bin/pod2html