From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B03AFC43331 for ; Wed, 1 Apr 2020 14:38:10 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 0EE4820719 for ; Wed, 1 Apr 2020 14:38:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=bacher09.org header.i=@bacher09.org header.b="hOq2KR0/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0EE4820719 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-18355-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 7896 invoked by uid 550); 1 Apr 2020 14:38:02 -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: Received: (qmail 7864 invoked from network); 1 Apr 2020 14:38:02 -0000 Subject: Re: [PATCH v3 bpf] kbuild: fix dependencies for DEBUG_INFO_BTF DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bacher09.org; s=reg; t=1585751870; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=/k3lR9IcabACG2QOffF9hyiS96WAwdOqQmzY+4DKcNI=; b=hOq2KR0/guhm4i76eN25x8DETEzk7vaB80g1Sk+vTt3LVOJHvqScJ4nBs+MIWs/LaO7uVV LQoQCJ7RzeensOrJSdA7jBgAvzXEJWRIGPg7eZQ1cI02TJKUaaxcpfA3Q3fzWvQLd0eCZg n4ZH+1CFJwxQa1+5wuOz9pDHs/zSWdc= 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, KP Singh References: <202004010033.A1523890@keescook> <20200401142057.453892-1-slava@bacher09.org> From: Slava Bacherikov Autocrypt: addr=slava@bacher09.org; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit 01.04.2020 17:20, Slava Bacherikov wrotes: > 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") > --- > 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 I had to add this, since DEBUG_INFO which depends on: DEBUG_KERNEL && !COMPILE_TEST would block DEBUG_INFO_BTF when COMPILE_TEST is turned on. In that case allyesconfig will emit both: CONFIG_DEBUG_INFO_BTF=y CONFIG_GCC_PLUGIN_RANDSTRUCT=y > + 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 >