linux-kernel - Re: [PATCH v7] rust: support for shadow call stack sanitizer

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Message-ID: <20240914-romp-clothing-965a16cb4dd4@spud>
Date: Sat, 14 Sep 2024 23:15:27 +0100
From: Conor Dooley <conor@...nel.org>
To: Gary Guo <gary@...yguo.net>
Cc: rust-for-linux@...r.kernel.org,
	Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Ard Biesheuvel <ardb@...nel.org>,
	Jamie Cunliffe <Jamie.Cunliffe@....com>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Nathan Chancellor <nathan@...nel.org>, Kees Cook <kees@...nel.org>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>, Marc Zyngier <maz@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Mark Brown <broonie@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...sung.com>,
	Valentin Obst <kernel@...entinobst.de>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-riscv <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH v7] rust: support for shadow call stack sanitizer

On Sat, Sep 14, 2024 at 05:46:14PM +0100, Conor Dooley wrote:
> On Sat, Sep 14, 2024 at 05:30:37PM +0100, Gary Guo wrote:
> > On Fri, 13 Sep 2024 22:17:56 +0100
> > Conor Dooley <conor@...nel.org> wrote:
> 
> > > error[E0425]: cannot find function `__mutex_init` in crate `bindings`
> > > --> /stuff/linux/rust/kernel/sync/lock/mutex.rs:104:28  
> > > |
> > > 104   |           unsafe { bindings::__mutex_init(ptr, name, key) }
> > > |                              ^^^^^^^^^^^^ help: a function with a similar name exists: `__mutex_rt_init`
> > > |
> > > ::: /stuff/brsdk/work/linux/rust/bindings/bindings_generated.rs:12907:5
> > > |
> > > 12907 | /     pub fn __mutex_rt_init(
> > > 12908 | |         lock: *mut mutex,
> > > 12909 | |         name: *const core::ffi::c_char,
> > > 12910 | |         key: *mut lock_class_key,
> > > 12911 | |     );
> > > | |_____- similarly named function `__mutex_rt_init` defined here
> > > 
> > > error: aborting due to 1 previous error
> > > 
> > 
> > Do you have PREEMPT_RT enabled?
> 
> I do indeed.


Turned it off, only to find out my board farm is non-functional! Looks
fine in QEMU however :)


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