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 6.1-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-6.1 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 @@ -37,7 +37,7 @@ 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-6.1/rust-kernel-require-send-for-module-implementations.patch