From nobody Tue Feb 10 17:08:03 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 84B137FBA7; Fri, 23 Feb 2024 13:38:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708695517; cv=none; b=kBZSFmSfE/Jn3LdahfFsWEAwaF7nRMeGOwzPWlo5WCGZGbWC+jZVMC19g5mAXtHYBlUwW1OCChZTzj5tr3r7XmX3OfWwzu+qT7xV0Jm+kNw73u9cXmzlkzh+or7CjQwbwdZowrMlSXdOce8UzFbaZhSL+AWBgcVsXZAOSw9Az/0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708695517; c=relaxed/simple; bh=VltUvQLlmLwkpl8kRnLO58R3H1pbUYjiNeAYAhm4vK4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QaJ/c/2exwFYr1WSrg1BoI1QlYDXCqk0PchzXrx/RWF8J1/TPYimKKSI+VjDa67THgBilCwWf6dJ0jucvN6y9fcuk/T16lBSh4Tyv5DNVL8V+NGF8H060BAU4pTDMqQo6hI3AE68nxlnPwYa3r+mmCMN/x3ZYuqeqoIYEmjHiB4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Na5p+TP8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Na5p+TP8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 611A5C433A6; Fri, 23 Feb 2024 13:38:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708695517; bh=VltUvQLlmLwkpl8kRnLO58R3H1pbUYjiNeAYAhm4vK4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Na5p+TP86HhyZXIS9INaL8dQBTOiswdRzULSa5FNq46+4a22pnBtTtloyqFR8cWc8 n8yn1MMy2W7P2cqPCBcS0OBpjP8xSadnJJcXmWRnWauvwKGLaTU4cll8SATYAhUv17 cYr9GnNe6g5JhklC6GcTpLtBe8w85TjlaGno0uWLbIrlH/aNG/uJRDYpZM3bkdYj3O 6K09xONc0jMaq1Kpvw0KdV/Jv/lw63QSQ/NRvdyygkYqtcjNvcy+e76orulwxLVITl SAMd1plaBCYXZCO4bQkgBlK3+NOpjLRsMt5hBqFLEl/aBsq/mk/quDjslSCEZG5OE4 rVGmCyn2+AIGw== From: Conor Dooley To: linux-riscv@lists.infradead.org Cc: conor@kernel.org, Conor Dooley , Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Nathan Chancellor , Nick Desaulniers , Tom Rix , rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, stable@vger.kernel.org Subject: [PATCH v2 1/3] rust: make mutually exclusive with CFI_CLANG Date: Fri, 23 Feb 2024 13:38:03 +0000 Message-ID: <20240223-perjury-preshow-fc2cf73d552e@spud> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240223-leverage-walmart-5424542cd8bd@spud> References: <20240223-leverage-walmart-5424542cd8bd@spud> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1069; i=conor.dooley@microchip.com; h=from:subject:message-id; bh=CGpXuPYcXKOyMHoYWd5SM3467xfR+bc0vpqwYOI3iyQ=; b=owGbwMvMwCFWscWwfUFT0iXG02pJDKk35u8JtHm+ZsH5Sc/CPbpmzj1yYUtL5lVNtfKQGyezj SYVXz8p0FHKwiDGwSArpsiSeLuvRWr9H5cdzj1vYeawMoEMYeDiFICJzJRhZHj+yWvHNJapDg0f b5+5HpMl+Cir0HdTfvXKf1lxFjVqwf4M/4v2a3lvq1kyS7umuGfKg7ig3pUBuwU4+zsuViUvVFZ YygsA X-Developer-Key: i=conor.dooley@microchip.com; a=openpgp; fpr=F9ECA03CF54F12CD01F1655722E2C55B37CF380C Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Conor Dooley On RISC-V, and presumably x86/arm64, if CFI_CLANG is enabled loading a rust module will trigger a kernel panic. Support for sanitisers, including kcfi (CFI_CLANG), is in the works, but for now they're nightly-only options in rustc. Make RUST depend on !CFI_CLANG to prevent configuring a kernel without symmetrical support for kfi. Fixes: 2f7ab1267dc9 ("Kbuild: add Rust support") cc: stable@vger.kernel.org Signed-off-by: Conor Dooley --- This probably needs to go to stable. The correct fixes tag for that I am not sure of however, but since CFI_CLANG predates RUST, I blamed the commit adding rust support. --- init/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/init/Kconfig b/init/Kconfig index 8d4e836e1b6b..6cf05824859e 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1895,6 +1895,7 @@ config RUST bool "Rust support" depends on HAVE_RUST depends on RUST_IS_AVAILABLE + depends on !CFI_CLANG depends on !MODVERSIONS depends on !GCC_PLUGINS depends on !RANDSTRUCT --=20 2.43.0