linux-kernel - [PATCH] rust: Add -fno-isolate-erroneous-paths-dereference to bindgen_skip_c

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Message-ID: <20251015022037.14535-2-xry111@xry111.site>
Date: Wed, 15 Oct 2025 10:20:37 +0800
From: Xi Ruoyao <xry111@...111.site>
To: Nathan Chancellor <nathan@...nel.org>
Cc: loongarch@...ts.linux.dev,
	Xi Ruoyao <xry111@...111.site>,
	Miguel Ojeda <ojeda@...nel.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 <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Huacai Chen <chenhuacai@...nel.org>,
	Tiezhu Yang <yangtiezhu@...ngson.cn>,
	rust-for-linux@...r.kernel.org (open list:RUST),
	linux-kernel@...r.kernel.org (open list),
	llvm@...ts.linux.dev (open list:CLANG/LLVM BUILD SUPPORT:Keyword:\b(?i:clang|llvm)\b)
Subject: [PATCH] rust: Add -fno-isolate-erroneous-paths-dereference to bindgen_skip_c_flags

It's used to work around an objtool issue since commit abb2a5572264
("LoongArch: Add cflag -fno-isolate-erroneous-paths-dereference"), but
it's then passed to bindgen and cause an error because Clang does not
have this option.

Fixes: abb2a5572264 ("LoongArch: Add cflag -fno-isolate-erroneous-paths-dereference")
Signed-off-by: Xi Ruoyao <xry111@...111.site>
---
 rust/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/Makefile b/rust/Makefile
index 23c7ae905bd2..0676b1194a62 100644
--- a/rust/Makefile
+++ b/rust/Makefile
@@ -289,7 +289,7 @@ bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \
 	-fno-inline-functions-called-once -fsanitize=bounds-strict \
 	-fstrict-flex-arrays=% -fmin-function-alignment=% \
 	-fzero-init-padding-bits=% -mno-fdpic \
-	--param=% --param asan-%
+	--param=% --param asan-% -fno-isolate-erroneous-paths-dereference
 
 # Derived from `scripts/Makefile.clang`.
 BINDGEN_TARGET_x86	:= x86_64-linux-gnu
-- 
2.51.0