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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 5EDD6C433E0 for ; Wed, 24 Feb 2021 16:53:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AFEEB64F04 for ; Wed, 24 Feb 2021 16:53:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AFEEB64F04 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2948E6B0006; Wed, 24 Feb 2021 11:53:40 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 26A776B006C; Wed, 24 Feb 2021 11:53:40 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 17FDE8D0001; Wed, 24 Feb 2021 11:53:40 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0172.hostedemail.com [216.40.44.172]) by kanga.kvack.org (Postfix) with ESMTP id F421D6B0006 for ; Wed, 24 Feb 2021 11:53:39 -0500 (EST) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id B055583E5 for ; Wed, 24 Feb 2021 16:53:39 +0000 (UTC) X-FDA: 77853757758.03.B89C542 Received: from mail.skyhub.de (mail.skyhub.de [5.9.137.197]) by imf16.hostedemail.com (Postfix) with ESMTP id 9AAB280192FD for ; Wed, 24 Feb 2021 16:53:37 +0000 (UTC) Received: from zn.tnic (p200300ec2f0d1800cad8e5da06da911c.dip0.t-ipconnect.de [IPv6:2003:ec:2f0d:1800:cad8:e5da:6da:911c]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 82A2A1EC0531; Wed, 24 Feb 2021 17:53:34 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1614185614; 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:in-reply-to:in-reply-to: references:references; bh=zOeBFbmurGj2suyzyPT2GMRd0IroJnET77mPeR4/Ncg=; b=R/2WRrCIWmVthrB+I78FYN+IY8shvdqh1yeCIanSd6GjieZDGa7W8lvI+ympdG3Ja0UF2A xPsNbQBqjQFjga7jTK0n6EaKzu3m1PlQVEhaRIy1HPClbAW0ezM8ccMdS/PQO4sYnz2KUH cWr4wWCrMTA+2xkZOOsF3BO7bGmbS9M= Date: Wed, 24 Feb 2021 17:53:32 +0100 From: Borislav Petkov To: "Yu, Yu-cheng" Cc: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , Weijiang Yang , Pengfei Xu , Haitao Huang , Michael Kerrisk Subject: Re: [PATCH v21 06/26] x86/cet: Add control-protection fault handler Message-ID: <20210224165332.GF20344@zn.tnic> References: <20210217222730.15819-1-yu-cheng.yu@intel.com> <20210217222730.15819-7-yu-cheng.yu@intel.com> <20210224161343.GE20344@zn.tnic> <32ac05ef-b50b-c947-095d-bc31a42947a3@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <32ac05ef-b50b-c947-095d-bc31a42947a3@intel.com> X-Stat-Signature: j1ux773sahgtuuc5ju13c7bwerdg1j78 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 9AAB280192FD Received-SPF: none (alien8.de>: No applicable sender policy available) receiver=imf16; identity=mailfrom; envelope-from=""; helo=mail.skyhub.de; client-ip=5.9.137.197 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614185617-881718 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Feb 24, 2021 at 08:44:45AM -0800, Yu, Yu-cheng wrote: > > > + force_sig_fault(SIGSEGV, SEGV_CPERR, > > > + (void __user *)uprobe_get_trap_addr(regs)); > > > > Why is this calling an uprobes function? > > > > I will change it to error_get_trap_addr(). "/* * Posix requires to provide the address of the faulting instruction for * SIGILL (#UD) and SIGFPE (#DE) in the si_addr member of siginfo_t. ..." Is yours SIGILL or SIGFPE? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette