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 268A922371E; Mon, 31 Mar 2025 14:35:36 +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=1743431737; cv=none; b=M3P0KxP4FaZTOAJP/0sDARLT/BY3VABO7bI2vcL5Lk++SVNTf8BroTPGwOfPGVYD/igMFT1gTxakwJ25FKd0ywseQTRNlHIX9cTrRK3vfOf7HmN4rEgrKfVJRDsBcuJxlbs7aAVQpCdEyxAJS2FiiY0dkCU0+1NpU3ek8epDlGg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743431737; c=relaxed/simple; bh=dokLz64a3JAqkh0ZQOi/NgeiJe5tuEwL48FedkASPCY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=anrJCOn/Qb3l4j8Ijb16FAc/jt7xvBHJ23SBrRzekYeFn4BAYilWpRkDkMs76CQx1+4g/h/BWJyKTpCue51LtAeY32Hb4N4UDVsEEn8Ph4abbXLSCPgmprXTKO1tsDvmJ9vrCPwRkL5yM4ZCebhAm1TJz7IHTDOPvzo9KokQ+/A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=STSqu9aV; 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="STSqu9aV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B65CC4CEE3; Mon, 31 Mar 2025 14:35:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743431736; bh=dokLz64a3JAqkh0ZQOi/NgeiJe5tuEwL48FedkASPCY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=STSqu9aVWdnYpatBgdcgQaxgoR/DJfp8HfsBJXmVcqE6tmgzs1J5XXm/wYiWMWB5P NVl9xZMUixEQvUttJsZgEX174eqHeZtaSc9EsDXRniRRiPWxnu5mB7M7ofCtHSkzeN Nus3Bl+2/B1axV4eXgGLd7vkjNLgLiZguxb4Plmgd91GWupcGS9kXiTngfpTG/9vOr 1GmnAssARn4naomqF/zz6ETnlc5plhLdupXB64Pd4ykA1CRwsGA31b8RO52hB7stFX JkKbILRV10YUVnCUMTe9ZadAYZAGPKrwKNiK1zKYeNjFWxa5K5RHFEf16mzzwZFiYZ zyHsXIs220ORA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Uros Bizjak , Matt Fleming , Ingo Molnar , Sasha Levin , tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org Subject: [PATCH AUTOSEL 6.12 03/13] x86/percpu: Disable named address spaces for UBSAN_BOOL with KASAN for GCC < 14.2 Date: Mon, 31 Mar 2025 10:35:17 -0400 Message-Id: <20250331143528.1685794-3-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250331143528.1685794-1-sashal@kernel.org> References: <20250331143528.1685794-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.21 Content-Transfer-Encoding: 8bit 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 6f8e9af827e0c..e9fb64b55912d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2433,18 +2433,20 @@ 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