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=-15.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 B9146C47082 for ; Tue, 8 Jun 2021 17:07:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 97DD661354 for ; Tue, 8 Jun 2021 17:07:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233322AbhFHRI7 (ORCPT ); Tue, 8 Jun 2021 13:08:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:47834 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232541AbhFHRI7 (ORCPT ); Tue, 8 Jun 2021 13:08:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 270466128E; Tue, 8 Jun 2021 17:06:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623172015; bh=0oq6QLIflkGHbOxU5rx4bKYJt3ntT7idXhuJlwJoNMI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vsPcslPrkz/qLjC+oXoJYPqk+5aRMwrlTSumo6CbwSrV+/p/zHCQT7qnWhv4E+85H p0Yr6SqqS3w5JPCXeQiRCCfCFXBudKwgpG7fLKq5GKDnZd6jkrPMN3mhz0SbpJVMuY KNdbskQlRH113UjomCUIyU74mn02bzCR1SY7dvks= Date: Tue, 8 Jun 2021 19:06:53 +0200 From: Greg Kroah-Hartman To: Arnd Bergmann Cc: stable@vger.kernel.org, Michael Weiser , Martin Vajnar , musl@lists.openwall.com, Will Deacon , Arnd Bergmann Subject: Re: [PATCH] [stable v4.4] arm64: Remove unimplemented syscall log message Message-ID: References: <20210602114651.423605-1-arnd@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210602114651.423605-1-arnd@kernel.org> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Wed, Jun 02, 2021 at 01:46:51PM +0200, Arnd Bergmann wrote: > 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: > Cc: Martin Vajnar > Cc: musl@lists.openwall.com > Acked-by: Will Deacon > Signed-off-by: Michael Weiser > Signed-off-by: Will Deacon > Signed-off-by: Greg Kroah-Hartman > Signed-off-by: Arnd Bergmann > --- > This was backported to v4.14 and later, but is missing in v4.4 and > before, apparently because of a trivial merge conflict. This is > a manual backport I did after I saw a report about the issue > by Martin Vajnar on the musl mailing list. > --- > arch/arm64/kernel/traps.c | 8 -------- > 1 file changed, 8 deletions(-) Now queued up, thanks. greg k-h