diff options
Diffstat (limited to 'rust/kernel')
| -rw-r--r-- | rust/kernel/module_param.rs | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/rust/kernel/module_param.rs b/rust/kernel/module_param.rs index f9a14765a926..1a2fcbf4a5b3 100644 --- a/rust/kernel/module_param.rs +++ b/rust/kernel/module_param.rs @@ -74,8 +74,13 @@ where crate::error::from_result(|| { let new_value = T::try_from_param_arg(arg)?; - // SAFETY: By function safety requirements, this access is safe. - let container = unsafe { &*((*param).__bindgen_anon_1.arg.cast::<SetOnce<T>>()) }; + // SAFETY: By function safety requirements, `param` is valid for read. + let arg = unsafe { (*param).__bindgen_anon_1.arg }; + let param_access_ptr = arg.cast::<ModuleParamAccess<T>>(); + // SAFETY: The `arg` field is initialized with a pointer to a `static ModuleAccessParam` by + // the rust module macro. Thus, the pointer is valid for use as a reference. + let param_access = unsafe { &*(param_access_ptr) }; + let container = ¶m_access.value; container .populate(new_value) |