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-rw-r--r--rust/kernel/alloc.rs9
1 files changed, 9 insertions, 0 deletions
diff --git a/rust/kernel/alloc.rs b/rust/kernel/alloc.rs
index 998779cc69769..95d402feb6ffd 100644
--- a/rust/kernel/alloc.rs
+++ b/rust/kernel/alloc.rs
@@ -187,3 +187,12 @@ pub unsafe trait Allocator {
let _ = unsafe { Self::realloc(Some(ptr), Layout::new::<()>(), layout, Flags(0)) };
}
}
+
+#[allow(dead_code)]
+/// Returns a properly aligned dangling pointer from the given `layout`.
+pub(crate) fn dangling_from_layout(layout: Layout) -> NonNull<u8> {
+ let ptr = layout.align() as *mut u8;
+
+ // SAFETY: `layout.align()` (and hence `ptr`) is guaranteed to be non-zero.
+ unsafe { NonNull::new_unchecked(ptr) }
+}