From: Wedson Almeida Filho <walmeida@microsoft.com>

The thread that calls the module initialisation code when a module is
loaded is not guaranteed [in fact, it is unlikely] to be the same one
that calls the module cleanup code on module unload, therefore, `Module`
implementations must be `Send` to account for them moving from one
thread to another implicitly.

Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
---
 rust/kernel/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
index 5c641233e26d..9141a95efb25 100644
--- a/rust/kernel/lib.rs
+++ b/rust/kernel/lib.rs
@@ -62,7 +62,7 @@
 /// The top level entrypoint to implementing a kernel module.
 ///
 /// For any teardown or cleanup operations, your type may implement [`Drop`].
-pub trait Module: Sized + Sync {
+pub trait Module: Sized + Sync + Send {
     /// Called at module initialization time.
     ///
     /// Use this method to perform whatever setup or registration your module
-- 
2.34.1

On Thu, Mar 28, 2024 at 8:55 PM Wedson Almeida Filho <wedsonaf@gmail.com> wrote:
>
> From: Wedson Almeida Filho <walmeida@microsoft.com>
>
> The thread that calls the module initialisation code when a module is
> loaded is not guaranteed [in fact, it is unlikely] to be the same one
> that calls the module cleanup code on module unload, therefore, `Module`
> implementations must be `Send` to account for them moving from one
> thread to another implicitly.
>
> Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>

Reviewed-by: Alice Ryhl <aliceryhl@google.com>

On 28.03.24 20:54, Wedson Almeida Filho wrote:
> From: Wedson Almeida Filho <walmeida@microsoft.com>
> 
> The thread that calls the module initialisation code when a module is
> loaded is not guaranteed [in fact, it is unlikely] to be the same one
> that calls the module cleanup code on module unload, therefore, `Module`
> implementations must be `Send` to account for them moving from one
> thread to another implicitly.
> 
> Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
> ---
>   rust/kernel/lib.rs | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

As already said by Valentin, this should go to the stable tree. (and
patch 1 should also go to stable 6.8.2, since IIRC the phy-driver is in
that tree)

Reviewed-by: Benno Lossin <benno.lossin@proton.me>

-- 
Cheers,
Benno