This is a note to let you know that I've just added the patch titled
rust: kernel: require `Send` for `Module` implementations
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rust-kernel-require-send-for-module-implementations.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 323617f649c0966ad5e741e47e27e06d3a680d8f Mon Sep 17 00:00:00 2001
From: Wedson Almeida Filho <walmeida@xxxxxxxxxxxxx>
Date: Thu, 28 Mar 2024 16:54:54 -0300
Subject: rust: kernel: require `Send` for `Module` implementations
From: Wedson Almeida Filho <walmeida@xxxxxxxxxxxxx>
commit 323617f649c0966ad5e741e47e27e06d3a680d8f upstream.
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@xxxxxxxxxxxxx>
Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Reviewed-by: Benno Lossin <benno.lossin@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 6.8.x: df70d04d5697: rust: phy: implement `Send` for `Registration`
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 247b365dc8dc ("rust: add `kernel` crate")
Link: https://lore.kernel.org/r/20240328195457.225001-3-wedsonaf@xxxxxxxxx
Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
rust/kernel/lib.rs | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/rust/kernel/lib.rs
+++ b/rust/kernel/lib.rs
@@ -60,7 +60,7 @@ const __LOG_PREFIX: &[u8] = b"rust_kerne
/// 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
Patches currently in stable-queue which might be from walmeida@xxxxxxxxxxxxx are
queue-6.6/rust-kernel-require-send-for-module-implementations.patch
