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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 761A7C5ACC6 for ; Tue, 16 Oct 2018 19:01:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C7F22098A for ; Tue, 16 Oct 2018 19:01:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="KwyhqadK"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="d6yJ9Yuh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C7F22098A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727623AbeJQCxH (ORCPT ); Tue, 16 Oct 2018 22:53:07 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:60846 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727061AbeJQCxF (ORCPT ); Tue, 16 Oct 2018 22:53:05 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 387E961307; Tue, 16 Oct 2018 19:01:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1539716475; bh=L04Rvh1baOpx1IXfJ6wZKE29LSgZ6u9EBmctQrPBWzY=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=KwyhqadKsoOwnUyLgrF7JDUdbKaAJ17uQzKOtYJygCLdS0zbiwrY7hTMpsH9K/LfV 8ohDMoKZGPyHM5mJnvd0Z02luR7pbGKr011SnimRrUzDBAP/DqDPf7/Yj+lqg3jtho lFExx83iDx92Kdi3WSer8CX95xfWfSK323qBFpuE= Received: from [192.168.43.47] (unknown [223.227.22.91]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: saiprakash.ranjan@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 92A92606DD; Tue, 16 Oct 2018 19:01:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1539716474; bh=L04Rvh1baOpx1IXfJ6wZKE29LSgZ6u9EBmctQrPBWzY=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=d6yJ9Yuh6MQdz0ugkBSatj1LRF8YX/5vASjmLsbtiu3xilHSK5W2m2MtvU828TO7Z 2arDxwNPTsjnBug/fIcbxjorUaMe9D7g2wOKD30SLmCR3RcGMnBbbSqe1Pl9uTh+4L +RKTFS4IfX0L3v3L1U+GzBlAM1VYiYrLrpGmoatM= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 92A92606DD Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=saiprakash.ranjan@codeaurora.org Subject: Re: Crash in msm serial on dragonboard with ftrace bootargs To: Steven Rostedt Cc: Stephen Boyd , Bjorn Andersson , Andy Gross , David Brown , Jiri Slaby , Kees Cook , "Joel Fernandes (Google)" , Geliang Tang , Greg Kroah-Hartman , Pramod Gurav , linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Rajendra Nayak , Vivek Gautam , Sibi Sankar References: <1cae8f10-55f5-20ce-9105-30af6f88bd6e@codeaurora.org> <20181016112928.4b52afb5@gandalf.local.home> <8c2fb318-813d-81f1-1e2f-cdbc68353077@codeaurora.org> <20181016125721.236ada82@gandalf.local.home> <20181016134803.1b9260c1@gandalf.local.home> <472db11e-49a6-a1ee-e298-791ee1bbb10b@codeaurora.org> <20181016141610.639b9000@gandalf.local.home> <20181016144123.24c47b38@gandalf.local.home> From: Sai Prakash Ranjan Message-ID: <7781815e-cba2-9e36-db6d-268298747876@codeaurora.org> Date: Wed, 17 Oct 2018 00:31:03 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181016144123.24c47b38@gandalf.local.home> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/17/2018 12:11 AM, Steven Rostedt wrote: > On Tue, 16 Oct 2018 23:55:14 +0530 > Sai Prakash Ranjan wrote: > >> On 10/16/2018 11:46 PM, Steven Rostedt wrote: >>> >>> [ Removed ivan.ivanov@linaro.org due to getting mail delivery errors ] >>> >>> On Tue, 16 Oct 2018 23:35:00 +0530 >>> Sai Prakash Ranjan wrote: >>> >>>> Ok got it, this sounds fun. I'll give it a try. >>> >>> Awesome, I'm looking forward to seeing what you come up with. >>> >> >> Now, I can trigger this crash reboot with "ftrace=function >> ftrace_filter=f*,g*,h*,i*,j*,k*,l*,m*,n*,o*,p*,q*" > > Does it crash with just "f*" or "g*" or any singularity of the above? > > Hmm, I wonder if it is from tracing msm_read? > Haa seems like you are right! With "ftrace=function ftrace_filter=msm_read" , I can trigger the crash, but sadly "ftrace_notrace=msm_read" also crashes. -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation