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 E5183151CD0; Tue, 20 Feb 2024 20:59:44 +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=1708462785; cv=none; b=aV+VgFRhE5ZIC7g40Vp5j9WMGz3uOSJa6LpGobrU1tGVl1iBqv2pOesnEYARZSVzO/5gw//+E+bU7NQLu5hryGZRX1bPSTP8w4G+D+znLT7XFoXxI+TSj2kP6ob6/bM29CIXZR9WLj7/6q70FQW3Uu3fh8FRRJMBPbObkveptGo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708462785; c=relaxed/simple; bh=74lC50DPYRGJOQJfK5t8c5SbkjIl76+4GKU03NveRYE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DSkfPkXpdEa5EPaWwY9axlKWD/OIUa28fRQ5+t5csgd2BDbWmvglcpMW24apoy8VV0l2WO6oZTKE7ZnXMrqJddr7kOL3NKC24802+iZcYEV+rrLl7B2ZpWj21opilfkeEqqKhxZmfGJjCsAr6TyeyfW1KNzPn8r+0hegHd+fYIU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Kpie/LUJ; 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="Kpie/LUJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33089C43609; Tue, 20 Feb 2024 20:59:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708462784; bh=74lC50DPYRGJOQJfK5t8c5SbkjIl76+4GKU03NveRYE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Kpie/LUJrQCjFORAtm/jcZHSNQBSm6ThNEh9YsXNEteeW4njOnW5wzcXugMxhKtHM Jw5iRHS+B6cQrHzzAm4A2T7L/Ix1JvJn7Wt61tILM1ACUkQ/aTbjozUrMU1ggO0Vhd EYmcy/04Isjm9DWw3adcN1rBdecwdpmEnqkWRCe4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Samuel Holland , Sami Tolvanen , Will Deacon , Andrew Morton Subject: [PATCH 6.1 034/197] scs: add CONFIG_MMU dependency for vfree_atomic() Date: Tue, 20 Feb 2024 21:49:53 +0100 Message-ID: <20240220204842.101083922@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240220204841.073267068@linuxfoundation.org> References: <20240220204841.073267068@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Samuel Holland commit 6f9dc684cae638dda0570154509884ee78d0f75c upstream. The shadow call stack implementation fails to build without CONFIG_MMU: ld.lld: error: undefined symbol: vfree_atomic >>> referenced by scs.c >>> kernel/scs.o:(scs_free) in archive vmlinux.a Link: https://lkml.kernel.org/r/20240122175204.2371009-1-samuel.holland@sifive.com Fixes: a2abe7cbd8fe ("scs: switch to vmapped shadow stacks") Signed-off-by: Samuel Holland Reviewed-by: Sami Tolvanen Cc: Will Deacon Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- arch/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/arch/Kconfig +++ b/arch/Kconfig @@ -642,6 +642,7 @@ config SHADOW_CALL_STACK bool "Shadow Call Stack" depends on ARCH_SUPPORTS_SHADOW_CALL_STACK depends on DYNAMIC_FTRACE_WITH_ARGS || DYNAMIC_FTRACE_WITH_REGS || !FUNCTION_GRAPH_TRACER + depends on MMU help This option enables the compiler's Shadow Call Stack, which uses a shadow stack to protect function return addresses from