linux-kernel - Re: [PATCH v15 5/9] mm: rust: add mmput

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Z86vpQBMYuonWsM_@google.com>
Date: Mon, 10 Mar 2025 09:23:49 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: kernel test robot <lkp@...el.com>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, 
	"Liam R. Howlett" <Liam.Howlett@...cle.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Matthew Wilcox <willy@...radead.org>, 
	Vlastimil Babka <vbabka@...e.cz>, John Hubbard <jhubbard@...dia.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Arnd Bergmann <arnd@...db.de>, Jann Horn <jannh@...gle.com>, Suren Baghdasaryan <surenb@...gle.com>, 
	oe-kbuild-all@...ts.linux.dev, 
	Linux Memory Management List <linux-mm@...ck.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, 
	Andreas Hindborg <a.hindborg@...nel.org>, Trevor Gross <tmgross@...ch.edu>, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org
Subject: Re: [PATCH v15 5/9] mm: rust: add mmput_async support

On Sun, Mar 09, 2025 at 07:37:54PM +0800, kernel test robot wrote:
> >> error[E0425]: cannot find function `mmput_async` in crate `bindings`
>    --> rust/kernel/mm.rs:143:28
>        |
>    143 |         unsafe { bindings::mmput_async(obj.cast().as_ptr()) };
>        |                            ^^^^^^^^^^^ not found in `bindings`

It looks like the mmput_async function doesn't exist at all when
CONFIG_MMU is disabled?

I guess I can just make the MmWithUserAsync type not exist at all when
CONFIG_MMU is disabled to mirror that, but it seems a bit weird.

Alice