From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3726165-1519677371-2-2319227738178911729 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1519677370; b=QkdczKHkXmvGtrCWAAju7+QeAmTvNCKWT4+pK3M1EhRH3kG LTod/DxBINfJu4S0exNpB15ArO+6IUIGRVkeZvL1wajSLPCv1DdBWOmdoFJlE3Ia rk9j+M912cUv1op8xXaaVscSibGMDJFfatSE3wN3ggYf+WuwZvunrdCejW+AB6O3 FoMjRvZtQjDAO4aR4SlvYC2XPCCY6dZHJVBSFHsQaS8nBT3/cJ/vXi0DktIiDF2q q1fwOid34oi23I2m/aE7MdBWaNYk2o4ZLelFgRkWj/7+AjD/uPme424V8MjIExpa SPkOIx8MWIJVcTBeuL1s0SQXA5X6U5YiIygK0TQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1519677370; bh=ImAPWOJVN0u93EzR1EtRDCqIkF vs980NwPprEPtvWQo=; b=fmY8P9TlVY+2Yn3q+LRd6O3qHnkb0+/XjvGjz/jL5Y PvtFFa4T8Udm0KdCQ0B5JWNBd3eY90+IrKQb2mnUesTvoLpRtsEKPpUST1LKlrsO /fppI8HM2PRElbkybSWFPhT9BpYnBbNMrfnw2+jh2NP3mN/GyJbj1XPfQSf6GNA0 VcYE1/NXT5hKDq4QfAMye7r2OmLyYyzGfuDbJdj45dZl4Q/P3Fe2EdD5hTzfGq4Q ZY1Cn3vAzbglneLCf4Q1pq5+qjE1VrwLe4w09TSGC4rzICv0eUyayw3y2bHDSgLO cbEfBGVqij1EJK39my21PYzDxM49vPM/pd5EARDUjjlQ== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753777AbeBZU1r (ORCPT ); Mon, 26 Feb 2018 15:27:47 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:36756 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753758AbeBZU1l (ORCPT ); Mon, 26 Feb 2018 15:27:41 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Will Deacon , Michael Weiser Subject: [PATCH 4.15 39/64] arm64: Remove unimplemented syscall log message Date: Mon, 26 Feb 2018 21:22:16 +0100 Message-Id: <20180226202155.121249160@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180226202153.453363333@linuxfoundation.org> References: <20180226202153.453363333@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michael Weiser commit 1962682d2b2fbe6cfa995a85c53c069fadda473e upstream. Stop printing a (ratelimited) kernel message for each instance of an unimplemented syscall being called. Userland making an unimplemented syscall is not necessarily misbehaviour and to be expected with a current userland running on an older kernel. Also, the current message looks scary to users but does not actually indicate a real problem nor help them narrow down the cause. Just rely on sys_ni_syscall() to return -ENOSYS. Cc: Acked-by: Will Deacon Signed-off-by: Michael Weiser Signed-off-by: Will Deacon Signed-off-by: Greg Kroah-Hartman --- arch/arm64/kernel/traps.c | 8 -------- 1 file changed, 8 deletions(-) --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -526,14 +526,6 @@ asmlinkage long do_ni_syscall(struct pt_ } #endif - if (show_unhandled_signals_ratelimited()) { - pr_info("%s[%d]: syscall %d\n", current->comm, - task_pid_nr(current), regs->syscallno); - dump_instr("", regs); - if (user_mode(regs)) - __show_regs(regs); - } - return sys_ni_syscall(); }