diff --git a/rust/bindgen_parameters b/rust/bindgen_parameters
index b7c7483123b7ab1664f229feb1c17c4b7b19172d..0f96af8b9a7fee72190c93fa84b88e0b7eb8a676 100644
--- a/rust/bindgen_parameters
+++ b/rust/bindgen_parameters
@@ -1,5 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0
 
+# We want to map these types to `isize`/`usize` manually, instead of
+# define them as `int`/`long` depending on platform bitwidth.
+--blocklist-type __kernel_s?size_t
+--blocklist-type __kernel_ptrdiff_t
+
 --opaque-type xregs_state
 --opaque-type desc_struct
 --opaque-type arch_lbr_state
diff --git a/rust/bindings/lib.rs b/rust/bindings/lib.rs
index d6da3011281a90053e252eafcd60776a17b1c381..014af0d1fc70cb51c529167957d5c6842fae2bde 100644
--- a/rust/bindings/lib.rs
+++ b/rust/bindings/lib.rs
@@ -27,6 +27,11 @@
 #[allow(dead_code)]
 #[allow(clippy::undocumented_unsafe_blocks)]
 mod bindings_raw {
+    // Manual definition for blocklisted types.
+    type __kernel_size_t = usize;
+    type __kernel_ssize_t = isize;
+    type __kernel_ptrdiff_t = isize;
+
     // Use glob import here to expose all helpers.
     // Symbols defined within the module will take precedence to the glob import.
     pub use super::bindings_helper::*;
diff --git a/rust/uapi/lib.rs b/rust/uapi/lib.rs
index fea2de330d1930428eaa99e8b672edef06405bf5..13495910271fafe4d40a3cc2d3a043c1dfa31b6c 100644
--- a/rust/uapi/lib.rs
+++ b/rust/uapi/lib.rs
@@ -25,4 +25,9 @@
     unsafe_op_in_unsafe_fn
 )]
 
+// Manual definition of blocklisted types.
+type __kernel_size_t = usize;
+type __kernel_ssize_t = isize;
+type __kernel_ptrdiff_t = isize;
+
 include!(concat!(env!("OBJTREE"), "/rust/uapi/uapi_generated.rs"));