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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2E488C7EE2A for ; Mon, 30 Jun 2025 05:11:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:CC:To: Subject:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Jt8pkKM4Y0oW2EZ32Xu1/oV/J0B8ss3DlcMT3ph4E70=; b=SVIUEjnWxRDdIUdbN6LNUeVMJC 7JN2SgBke7nJYpb4zrNiDyADUN6QC+gntTS2fTaJ16I6tWgj1byI2ByIL7eCcmo7ehzUIvyOWygYj WhDfm7Hf3pdGhZ/J0eYEcnFUBuhLJ1rDAz8RPk4u5lDVK9nEXWQS+iiOE79ij0t32kqmnvFrN31/T +o3ZXyQ/8JyReW/Snch41ljBTPfHLaRepPAF3jkXHVImps3t1ygEOFaumTxTeuU7g3pAvX4xfOFAB HWaGbQ4Jcnb/GCsHTMaLUJjtMSYD/WZNZqdX7FFq4GUfVeiaJAYG9Nrx231WdImKBliCY/BVBVc0i yn6G69sA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uW6nl-00000001FAV-1ifk; Mon, 30 Jun 2025 05:11:33 +0000 Received: from szxga03-in.huawei.com ([45.249.212.189]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uW6lQ-00000001F0M-3Omj for linux-arm-kernel@lists.infradead.org; Mon, 30 Jun 2025 05:09:10 +0000 Received: from mail.maildlp.com (unknown [172.19.163.48]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4bVvGy0t8TzdbkC; Mon, 30 Jun 2025 13:04:58 +0800 (CST) Received: from kwepemk200017.china.huawei.com (unknown [7.202.194.83]) by mail.maildlp.com (Postfix) with ESMTPS id 1079E180064; Mon, 30 Jun 2025 13:08:58 +0800 (CST) Received: from [10.174.178.219] (10.174.178.219) by kwepemk200017.china.huawei.com (7.202.194.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 30 Jun 2025 13:08:57 +0800 Subject: Re: [report] WARN_ON_ONCE() was triggered with pseudo NMI enabled To: Will Deacon CC: , Catalin Marinas , Mark Rutland References: From: Zenghui Yu Message-ID: Date: Mon, 30 Jun 2025 13:08:56 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.178.219] X-ClientProxiedBy: kwepems100002.china.huawei.com (7.221.188.206) To kwepemk200017.china.huawei.com (7.202.194.83) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250629_220909_013009_04623DE3 X-CRM114-Status: UNSURE ( 8.94 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2025/6/27 23:48, Will Deacon wrote: > On Wed, Mar 12, 2025 at 05:27:50PM +0800, Zenghui Yu wrote: > > With pseudo NMI enabled, I can trigger the following splat when running > > selftests (e.g., arm64/signal/fake_sigreturn_bad_magic, which will issue > > a BRK instruction). > > > > ------------[ cut here ]------------ > > WARNING: CPU: 5 PID: 386876 at ./arch/arm64/include/asm/irqflags.h:34 send_user_sigtrap+0xc8/0xd0 > > This is fixed by Ada's series: > > https://lore.kernel.org/r/20250620211207.773980-1-ada.coupriediaz@arm.com Thanks for the heads-up! Zenghui