From mboxrd@z Thu Jan 1 00:00:00 1970 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 649C6254B12; Thu, 17 Apr 2025 18:39:58 +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=1744915198; cv=none; b=EweRuNMM8OAjNYGcYi2YVEJcExY8q2F34Za3eSWLcIFOU3uYXqTe+t7eEArPexwveybkM01NOO5N6p3xG793I4s9TZOj961UyJOOihB2dMeKZF9G+9XJ5pJGq4AAebl4UZ/4jLI/IVWd6qgrXbFb4R8o9LiOTCqoPa4KJLWwOiA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744915198; c=relaxed/simple; bh=qoTp+eStGvmKTvJ/BeCObse+lkI6O2mvUrA/ZVwcW+g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RvSVVL0jlJmG9d0VcJc9Rb7xg2K0W6VaVAedndePzsEIeC7M2c2TTxVJJcdBW08gCtQPPyhQPejFEdvBHllvIOh64AEk1H0atirIeTTeB2TFp9N0c3ImAjnV4zrAF4XRa2bHeYu2V81OinAWrIKfhRObjtb5Jcm1wkyfQPLUYvU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FDkXlCOo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="FDkXlCOo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 63F1DC4CEE4; Thu, 17 Apr 2025 18:39:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744915197; bh=qoTp+eStGvmKTvJ/BeCObse+lkI6O2mvUrA/ZVwcW+g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FDkXlCOo7vG2NjxWenMJ9DyVyyBD+Qeh85bwVOVjSmvWjI2h5NPEMUDaV8aQgWNqU XbWVdvPpcHtuiW31+4QM1U4BS1AQu0fM0bjYUFt6RUqQ9kFot30IuCLBXfP4F0fRtF NEftXLVCIbcrsDOeWac120aUqwFyq54V9bVDEazQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Matt Fleming , Uros Bizjak , Ingo Molnar , Sasha Levin Subject: [PATCH 6.12 049/393] x86/percpu: Disable named address spaces for UBSAN_BOOL with KASAN for GCC < 14.2 Date: Thu, 17 Apr 2025 19:47:38 +0200 Message-ID: <20250417175109.563050696@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250417175107.546547190@linuxfoundation.org> References: <20250417175107.546547190@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Uros Bizjak [ Upstream commit b6762467a09ba8838c499e4f36561e82fc608ed1 ] GCC < 14.2 does not correctly propagate address space qualifiers with -fsanitize=bool,enum. Together with address sanitizer then causes that load to be sanitized. Disable named address spaces for GCC < 14.2 when both, UBSAN_BOOL and KASAN are enabled. Reported-by: Matt Fleming Signed-off-by: Uros Bizjak Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20250227140715.2276353-1-ubizjak@gmail.com Closes: https://lore.kernel.org/lkml/20241213190119.3449103-1-matt@readmodwrite.com/ Signed-off-by: Sasha Levin --- arch/x86/Kconfig | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index db38d2b9b7886..e54da3b4d334e 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2434,18 +2434,20 @@ config CC_HAS_NAMED_AS def_bool $(success,echo 'int __seg_fs fs; int __seg_gs gs;' | $(CC) -x c - -S -o /dev/null) depends on CC_IS_GCC +# +# -fsanitize=kernel-address (KASAN) and -fsanitize=thread (KCSAN) +# are incompatible with named address spaces with GCC < 13.3 +# (see GCC PR sanitizer/111736 and also PR sanitizer/115172). +# + config CC_HAS_NAMED_AS_FIXED_SANITIZERS - def_bool CC_IS_GCC && GCC_VERSION >= 130300 + def_bool y + depends on !(KASAN || KCSAN) || GCC_VERSION >= 130300 + depends on !(UBSAN_BOOL && KASAN) || GCC_VERSION >= 140200 config USE_X86_SEG_SUPPORT - def_bool y - depends on CC_HAS_NAMED_AS - # - # -fsanitize=kernel-address (KASAN) and -fsanitize=thread - # (KCSAN) are incompatible with named address spaces with - # GCC < 13.3 - see GCC PR sanitizer/111736. - # - depends on !(KASAN || KCSAN) || CC_HAS_NAMED_AS_FIXED_SANITIZERS + def_bool CC_HAS_NAMED_AS + depends on CC_HAS_NAMED_AS_FIXED_SANITIZERS config CC_HAS_SLS def_bool $(cc-option,-mharden-sls=all) -- 2.39.5