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=-8.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 881CCC43387 for ; Fri, 11 Jan 2019 14:21:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5094D2183F for ; Fri, 11 Jan 2019 14:21:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547216467; bh=7ct6IFvTvpHHRB+lDLFl7365LkRR7Zv0O54hCicmnoU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=ZOBNI/d0wJQdYrCD7OsJucdyLl0Gc0XAiahMzpTjy04+idg7o9uNQw5Szenpf0aHR To1LdJzl01OVt5mmpxP1r6yw4QjXlPdWLq6FwdSpmPNZrbloTt9mzu++CO3Ui2Hjpc 7XnU+teCLiAuJnyG/L5ItjCXhPxYwhTaB0slK4KA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732520AbfAKOVG (ORCPT ); Fri, 11 Jan 2019 09:21:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:39152 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731427AbfAKOVE (ORCPT ); Fri, 11 Jan 2019 09:21:04 -0500 Received: from devbox (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D12972177B; Fri, 11 Jan 2019 14:21:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1547216464; bh=7ct6IFvTvpHHRB+lDLFl7365LkRR7Zv0O54hCicmnoU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=jmVc0UQeTIZEkw77dTvEpM0Xr4sDGZv/pl2KcVlog0y+TPEKT4/0gsyBLJON/Ky3n hNCGxYb5yl5jSa/erurEiwzMdlGGdjaklLD6ShqnnCvS7stYMWui+3VMIwUc14mqGq e9Naq2plC3xJBIfPVu4V4ISI1PfNx7+eszdyATIU= Date: Fri, 11 Jan 2019 23:21:01 +0900 From: Masami Hiramatsu To: Steven Rostedt Cc: Ingo Molnar , peterz@infradead.org, Mathieu Desnoyers , linux-kernel , Andrea Righi , stable@vger.kernel.org Subject: Re: [PATCH 6/9] kprobes: Prohibit probing on hardirq tracers Message-Id: <20190111232101.572db64cd592c43f20efdf95@kernel.org> In-Reply-To: <20190110121231.446b3396@gandalf.local.home> References: <154708884117.6325.4454464467156828009.stgit@devbox> <154708901305.6325.18088274750877716004.stgit@devbox> <20190110121231.446b3396@gandalf.local.home> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 10 Jan 2019 12:12:31 -0500 Steven Rostedt wrote: > On Thu, 10 Jan 2019 11:56:53 +0900 > Masami Hiramatsu wrote: > > > Since kprobes breakpoint handling involves hardirq tracer, > > probing these functions cause breakpoint recursion problem. > > > > Prohibit probing on those functions. > > > > Signed-off-by: Masami Hiramatsu > > --- > > kernel/trace/trace_irqsoff.c | 9 +++++++-- > > kernel/trace/trace_preemptirq.c | 5 +++++ > > 2 files changed, 12 insertions(+), 2 deletions(-) > > > > > Acked-by: Steven Rostedt (VMware) Thank you for your Ack! > > -- Steve -- Masami Hiramatsu