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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 21243C33CB1 for ; Tue, 14 Jan 2020 10:12:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E2204207FF for ; Tue, 14 Jan 2020 10:12:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578996762; bh=znToujCv4gKXyI2WE/bFFctzaBTLhDmy1kAXPqx8/Ys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=scLY5/X812HFVZ69HkDULFzA0k9L7XnWlzmTlsYYsesdu2Ur7aDb7plwnNXHCQxGq imDHBizx/BqhyRUvDfhBVFvXMLoP3UpSnfYkY/OcaOqn6VYD70HjnSKrWjnnvMrr/Q OipqZtTKnFL36OzE4fVB2qsxkNNqE8mW8HXwgM3g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733093AbgANKMk (ORCPT ); Tue, 14 Jan 2020 05:12:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:49290 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733089AbgANKMk (ORCPT ); Tue, 14 Jan 2020 05:12:40 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 CD0EA24676; Tue, 14 Jan 2020 10:12:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578996760; bh=znToujCv4gKXyI2WE/bFFctzaBTLhDmy1kAXPqx8/Ys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZKE3iQWsEJcHc2KFNFpxDQN8e1DKotZfJUTxnM8Ac9aJzqeYRm9YOb4dyxRPLO13y bHW1L/i9NHCz1ijuSW9vmLczxc7oxGkC7qf6sIYVgqv2KNNeGB97n1udfAjHsSC50p uRnex2paiNpuGzpFJDmSBVnR7UVAXjBYMo2JS7dI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, kbuild test robot , "Steven Rostedt (VMware)" Subject: [PATCH 4.4 06/28] tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined Date: Tue, 14 Jan 2020 11:02:08 +0100 Message-Id: <20200114094340.793885089@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200114094336.845958665@linuxfoundation.org> References: <20200114094336.845958665@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Steven Rostedt (VMware) commit b8299d362d0837ae39e87e9019ebe6b736e0f035 upstream. On some archs with some configurations, MCOUNT_INSN_SIZE is not defined, and this makes the stack tracer fail to compile. Just define it to zero in this case. Link: https://lore.kernel.org/r/202001020219.zvE3vsty%lkp@intel.com Cc: stable@vger.kernel.org Fixes: 4df297129f622 ("tracing: Remove most or all of stack tracer stack size from stack_max_size") Reported-by: kbuild test robot Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace_stack.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -197,6 +197,11 @@ check_stack(unsigned long ip, unsigned l local_irq_restore(flags); } +/* Some archs may not define MCOUNT_INSN_SIZE */ +#ifndef MCOUNT_INSN_SIZE +# define MCOUNT_INSN_SIZE 0 +#endif + static void stack_trace_call(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *op, struct pt_regs *pt_regs)