netdev - Re: [PATCH net v2] rust: net::phy fix module autoloading

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Message-ID: <20241217085124.761566e6@kernel.org>
Date: Tue, 17 Dec 2024 08:51:24 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Paolo Abeni <pabeni@...hat.com>
Cc: FUJITA Tomonori <fujita.tomonori@...il.com>, davem@...emloft.net,
 edumazet@...gle.com, rust-for-linux@...r.kernel.org, andrew@...n.ch,
 hkallweit1@...il.com, tmgross@...ch.edu, aliceryhl@...gle.com,
 boqun.feng@...il.com, gary@...yguo.net, bjorn3_gh@...tonmail.com,
 benno.lossin@...ton.me, a.hindborg@...nel.org, ojeda@...nel.org,
 alex.gaynor@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net v2] rust: net::phy fix module autoloading

On Tue, 17 Dec 2024 07:44:00 -0800 Jakub Kicinski wrote:
> On Tue, 17 Dec 2024 16:11:29 +0100 Paolo Abeni wrote:
> > > I'll look into it. Just in case you already investigated the same thing
> > > I would - have you tried the rust build script from NIPA or just to
> > > build manually?     
> > 
> > I tried both (I changed the build dir in the script to fit my setup). I
> > could not see the failure in any case - on top of RHEL 9.  
> 
> I think I figured it out, you must have old clang. On Fedora 41
> CFI_CLANG defaults to y and prevents RUST from getting enabled.

Still hitting a problem in module signing. 
Rust folks does this ring a bell?

make[4]: *** Deleting file 'certs/signing_key.pem'
  GENKEY  certs/signing_key.pem
....+.........+++++
-----
80728E46C07F0000:error:03000098:digital envelope routines:do_sigver_init:invalid digest:crypto/evp/m_sigver.c:342:
make[4]: *** [../certs/Makefile:53: certs/signing_key.pem] Error 1
make[4]: *** Waiting for unfinished jobs....

allmodconfig without Rust builds fine with both GCC and clang.

build flags: LLVM=1
config: https://paste.centos.org/view/0555e9dd
OS: Fedora 41