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 1B8EE14A4D2; Tue, 20 Feb 2024 21:31:03 +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=1708464663; cv=none; b=rk5LsiI1ehLmy8mkI64GCjn1zUxG/eOHX4zjvh6EaznclUL1i9DhrPgNTbsrX7qtVSbML5/v6VDibyeuCjWqxqDrvfbwBpF5eVUds0D+5pFOBCu4ZbMgt1T5wwch27wto04MqihXSO8kt1DG4+uVJpMkmw0ud3ux37hwxN49Ks0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708464663; c=relaxed/simple; bh=Nq+Uj/U1ljAz3yf4UR6PHEku2LfmD6S1Pxi8tc4ccPc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=U8HLJrs9LZsh0BJIvS8lu2m8Mw96vzP87y5bwaKwQCKY5oFVh+8lXxkGkdMbDUsrxMz/BsbULWSDSw4ofNL+ZMI8WhqJjGX1vnsFkeOUg8G7fofSlOkJ30l9RCdavXxb3rTsQ/rlq2I0jt92c8lZSn+Tv3j++LrCGhV/O0p3bTg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Nyh3f4tF; 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="Nyh3f4tF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9902AC433C7; Tue, 20 Feb 2024 21:31:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708464663; bh=Nq+Uj/U1ljAz3yf4UR6PHEku2LfmD6S1Pxi8tc4ccPc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nyh3f4tF5iK93bCD0Gs3EqGUd268gl71g3vZLaQQNMiquO85oEDJESYrm3+Moo86H HAEaKQqW0Rj5B/nBeum6ve+k0BzXDm0bnt9PeHQy97zuwwg5UZXcnZcom9uGaV0X+g J9zL4jlElmC17pa2rQYgCK0FrR1fhKPupKRLBQuo= 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 6.7 066/309] scs: add CONFIG_MMU dependency for vfree_atomic() Date: Tue, 20 Feb 2024 21:53:45 +0100 Message-ID: <20240220205635.279208766@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240220205633.096363225@linuxfoundation.org> References: <20240220205633.096363225@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 6.7-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 @@ -681,6 +681,7 @@ 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