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[209.85.220.41]) by mx.google.com with SMTPS id l23sor7274430uar.46.2019.01.21.04.35.15 for (Google Transport Security); Mon, 21 Jan 2019 04:35:15 -0800 (PST) Received-SPF: pass (google.com: domain of pintu.ping@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=UF2COheU; spf=pass (google.com: domain of pintu.ping@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=pintu.ping@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=k+MSaycj/9KITYA6lfk8QZCRSnahwfifAXAEb5FjW38=; b=UF2COheUoysXjsRSEAmwWvy5ArpkdNfz58fuMsj0CWoKN6ba9PggydnGg8dWNnxGdD 6xNV8hqPBGouluqMMVwCAfevMbvLnz4CkE/80V/tbf82hpdrnJ2eOhqlyJ560TEoeviv hS1PZ5IowjEB0S8s0cb0k+voFynUWiRACHTllvcoiQXgdAeZwPkp0wmy15M9i8bzcj8f xpMDexfrQSPWWR5ZuTjWHqb6unZrPRJeCqMpfCJ0DER/WUX69ez/UNghdh4iwX5ulSQb +uvO8W9H7y7pfSdTKxQGFCs/6HBfoKY939BGG/zfFk/Rq1zuEq4iDiHE7nlofiqJJKaG j1bQ== X-Google-Smtp-Source: ALg8bN7BTMgsv7iqj35UyxppTuxv/Y6UFsAvIzIcZL9zuwtmFozpjinsnmWFAZjBSG8GUGYxUb3A1UBWwOOmUHTeENU= X-Received: by 2002:ab0:4802:: with SMTP id b2mr12152078uad.47.1548074114497; Mon, 21 Jan 2019 04:35:14 -0800 (PST) MIME-Version: 1.0 References: <57ff3437-47b5-fe92-d576-084ce26aa5d8@codeaurora.org> <1ffe2b68-c87b-aa19-08af-b811063b3310@codeaurora.org> In-Reply-To: <1ffe2b68-c87b-aa19-08af-b811063b3310@codeaurora.org> From: Pintu Agarwal Date: Mon, 21 Jan 2019 18:05:03 +0530 Message-ID: Subject: Re: Need help: how to locate failure from irq_chip subsystem To: Sai Prakash Ranjan Cc: open list , linux-arm-kernel@lists.infradead.org, Russell King - ARM Linux , linux-mm@kvack.org, linux-pm@vger.kernel.org, kernelnewbies@kernelnewbies.org Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Message-ID: <20190121123503.93fcAke-HeJUVFx-pncBmwTXHZyYVinb3127EUX-qkY@z> On Fri, Jan 18, 2019 at 5:23 PM Sai Prakash Ranjan wrote: > > On 1/18/2019 4:50 PM, Pintu Agarwal wrote: > >>>> Could you please tell which QCOM SoC this board is based on? > >>>> > >>> > >>> Snapdragon 845 with kernel 4.9.x > >>> I want to know from which subsystem it is triggered:drivers/soc/qcom/ > >>> > >> > >> Irqchip driver is "drivers/irqchip/irq-gic-v3.c". The kernel you are > >> using is msm-4.9 I suppose or some other kernel? > >> > > Yes, I am using customized version of msm-4.9 kernel based on Android. > > And yes the irqchip driver is: irq-gic-v3, which I can see from config. > > > > But, what I wanted to know is, how to find out which driver module > > (hopefully under: /drivers/soc/qcom/) that register with this > > irq_chip, is getting triggered at the time of crash ? > > So, that I can implement irq_hold function for it, which is the cause of crash. > > > > Hmm, since this is a bootup crash, *initcall_debug* should help. > Add "initcall_debug ignore_loglevel" to kernel commandline and > check the last log before crash. > OK thanks Sai, for your suggestions. Yes, I already tried that, but it did not help much. Anyways, I could finally find the culprit driver, from where null reference is coming. So, that issue is fixed. But, now I am looking into another issue. If required, I will post further... Thanks, Pintu