From patchwork Wed Apr 1 14:20:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Slava Bacherikov X-Patchwork-Id: 11469129 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E3E7F81 for ; Wed, 1 Apr 2020 14:22:32 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 4C53B20705 for ; Wed, 1 Apr 2020 14:22:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=bacher09.org header.i=@bacher09.org header.b="WHb2HyAq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4C53B20705 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bacher09.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-18354-patchwork-kernel-hardening=patchwork.kernel.org@lists.openwall.com Received: (qmail 32753 invoked by uid 550); 1 Apr 2020 14:22:30 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Delivered-To: mailing list kernel-hardening@lists.openwall.com Received: (qmail 32721 invoked from network); 1 Apr 2020 14:22:30 -0000 From: Slava Bacherikov DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bacher09.org; s=reg; t=1585750936; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6PA6evFBA3OhoMmMTkr0x/OR3XEpPNK02N3kYgs/0fY=; b=WHb2HyAqpVVozuh8wufIBqW+oj9uTdjbGnGsyEXPc7/TaCXQjFjLlFvyjWIWzbUeFHxjMJ MS+CV9sKgxO+0GYdsxZts5OAsRg+ujd1m5PkErXUf9f4ii1JfPdjUbg2Do8Z+tw3C35aCe C07xU6daqkxWfDHWpYGCzu4ZwMVyA+Q= To: keescook@chromium.org Cc: andriin@fb.com, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, jannh@google.com, alexei.starovoitov@gmail.com, daniel@iogearbox.net, kernel-hardening@lists.openwall.com, liuyd.fnst@cn.fujitsu.com, Slava Bacherikov , KP Singh Subject: [PATCH v3 bpf] kbuild: fix dependencies for DEBUG_INFO_BTF Date: Wed, 1 Apr 2020 17:20:58 +0300 Message-Id: <20200401142057.453892-1-slava@bacher09.org> In-Reply-To: <202004010033.A1523890@keescook> References: <202004010033.A1523890@keescook> MIME-Version: 1.0 X-Spam: Yes Currently turning on DEBUG_INFO_SPLIT when DEBUG_INFO_BTF is also enabled will produce invalid btf file, since gen_btf function in link-vmlinux.sh script doesn't handle *.dwo files. Enabling DEBUG_INFO_REDUCED will also produce invalid btf file, and using GCC_PLUGIN_RANDSTRUCT with BTF makes no sense. Signed-off-by: Slava Bacherikov Reported-by: Jann Horn Reported-by: Liu Yiding Acked-by: KP Singh Acked-by: Andrii Nakryiko Fixes: e83b9f55448a ("kbuild: add ability to generate BTF type info for vmlinux") Reviewed-by: Kees Cook --- lib/Kconfig.debug | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index f61d834e02fe..b94227be2d62 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -222,7 +222,9 @@ config DEBUG_INFO_DWARF4 config DEBUG_INFO_BTF bool "Generate BTF typeinfo" - depends on DEBUG_INFO + depends on DEBUG_INFO || COMPILE_TEST + depends on !DEBUG_INFO_SPLIT && !DEBUG_INFO_REDUCED + depends on !GCC_PLUGIN_RANDSTRUCT || COMPILE_TEST help Generate deduplicated BTF type information from DWARF debug info. Turning this on expects presence of pahole tool, which will convert