Messages in this thread | | | Subject | Re: Need help: how to locate failure from irq_chip subsystem | From | Sai Prakash Ranjan <> | Date | Fri, 18 Jan 2019 16:33:38 +0530 |
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On 1/18/2019 4:18 PM, Pintu Agarwal wrote: > On Fri, Jan 18, 2019 at 3:54 PM Sai Prakash Ranjan > <saiprakash.ranjan@codeaurora.org> wrote: >> >> 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? >> > > 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?
- Sai -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
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