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=-0.8 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 7DB27C5AC81 for ; Fri, 18 Jan 2019 17:59:45 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2C2E520850 for ; Fri, 18 Jan 2019 17:59:45 +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="kYZfn6ld"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="kYZfn6ld" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C2E520850 Authentication-Results: mail.kernel.org; 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Fri, 18 Jan 2019 10:24:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1547807078; bh=inbUf2rQzWW+lxUgtiTxzNvPxjd2jbLX8rRSJp03ZEI=; h=Subject:To:References:From:Date:In-Reply-To:From; b=kYZfn6ldrO9XZ96OOJ1sOK1P5ZIRzbRez2oylv0CPrDsuEoUjQxYMx9NWfZfhZpVs jF4NKbPhO0Pw7H+CAI64++mQUiAZOQcwJpDd2VkePsOTSr32QIWHxFIOZuh0qTYRay T8u8yySW3x0mu+H8vJMaWJXUNaEltjGrtuhksGIc= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 011D26024C 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: Need help: how to locate failure from irq_chip subsystem To: Pintu Agarwal , open list , linux-arm-kernel@lists.infradead.org, Russell King - ARM Linux , linux-mm@kvack.org, linux-pm@vger.kernel.org, kernelnewbies@kernelnewbies.org References: From: Sai Prakash Ranjan Message-ID: Date: Fri, 18 Jan 2019 15:54:33 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Mailman-Approved-At: Fri, 18 Jan 2019 12:59:17 -0500 X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: kernelnewbies-bounces@kernelnewbies.org Hi Pintu-san, On 1/18/2019 3:38 PM, Pintu Agarwal wrote: > Hi All, > > Currently, I am trying to debug a boot up crash on some qualcomm > snapdragon arm64 board with kernel 4.9. > I could find the cause of the failure, but I am unable to locate from > which subsystem/drivers this is getting triggered. > If you have any ideas or suggestions to locate the issue, please let me know. > > This is the snapshot of crash logs: > [ 6.907065] Unable to handle kernel NULL pointer dereference at > virtual address 00000000 > [ 6.973938] PC is at 0x0 > [ 6.976503] LR is at __ipipe_ack_fasteoi_irq+0x28/0x38 > [ 7.151078] Process qmp_aop (pid: 24, stack limit = 0xfffffffbedc18000) > [ 7.242668] [< (null)>] (null) > [ 7.247416] [] __ipipe_dispatch_irq+0x78/0x340 > [ 7.253469] [] __ipipe_grab_irq+0x5c/0xd0 > [ 7.341538] [] gic_handle_irq+0xc0/0x154 > > [ 6.288581] [PINTU]: __ipipe_ack_fasteoi_irq - called > [ 6.293698] [PINTU]: __ipipe_ack_fasteoi_irq: > desc->irq_data.chip->irq_hold is NULL > > When I check, I found that the irq_hold implementation is missing in > one of the irq_chip driver (expected by ipipe), which I am supposed to > implement. > > But I am unable to locate which irq_chip driver. > If there are any good techniques to locate this in kernel, please help. > Could you please tell which QCOM SoC this board is based on? Thanks, Sai -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies