From: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To: Pintu Agarwal <pintu.ping@gmail.com>,
open list <linux-kernel@vger.kernel.org>,
linux-arm-kernel@lists.infradead.org,
Russell King - ARM Linux <linux@armlinux.org.uk>,
linux-mm@kvack.org, linux-pm@vger.kernel.org,
kernelnewbies@kernelnewbies.org
Subject: Re: Need help: how to locate failure from irq_chip subsystem
Date: Fri, 18 Jan 2019 15:54:33 +0530 [thread overview]
Message-ID: <bceb32be-d508-c2a4-fa81-ab8b90323d3f@codeaurora.org> (raw)
In-Reply-To: <CAOuPNLj4QzNDt0npZn2LhZTFgDNJ1CsWPw3=wvUuxnGtQW308g@mail.gmail.com>
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] [<ffffff9469f8d2e0>] __ipipe_dispatch_irq+0x78/0x340
> [ 7.253469] [<ffffff9469e81564>] __ipipe_grab_irq+0x5c/0xd0
> [ 7.341538] [<ffffff9469e81d68>] 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
--
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next prev parent reply other threads:[~2019-01-18 17:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-18 10:08 Need help: how to locate failure from irq_chip subsystem Pintu Agarwal
2019-01-18 10:24 ` Sai Prakash Ranjan [this message]
2019-01-18 10:48 ` Pintu Agarwal
2019-01-18 11:03 ` Sai Prakash Ranjan
2019-01-18 11:20 ` Pintu Agarwal
2019-01-18 11:53 ` Sai Prakash Ranjan
2019-01-21 12:35 ` Pintu Agarwal
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