Re: [next] [arm64] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000068

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On Tue, 15 Jun 2021 at 16:49, Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote:
>
> Following kernel crash reported while booting linux next 20210615 tag
> on qemu_arm64.

Similar crash reported while booting Linux next 20210615 tag kernel on
the qemu arm.

https://lkft.validation.linaro.org/scheduler/job/2901326#L441

>
> Crash log:
> -------------
> [    0.767379] Unable to handle kernel NULL pointer dereference at
> virtual address 0000000000000068
> [    0.769815] Mem abort info:
> [    0.770735]   ESR = 0x96000004
> [    0.771598]   EC = 0x25: DABT (current EL), IL = 32 bits
> [    0.773008]   SET = 0, FnV = 0
> [    0.773865]   EA = 0, S1PTW = 0
> [    0.774844]   FSC = 0x04: level 0 translation fault
> [    0.776195] Data abort info:
> [    0.776968]   ISV = 0, ISS = 0x00000004
> [    0.778010]   CM = 0, WnR = 0
> [    0.778961] [0000000000000068] user address but active_mm is swapper
> [    0.780643] Internal error: Oops: 96000004 [#1] PREEMPT SMP
> [    0.782189] Modules linked in:
> [    0.783098] CPU: 2 PID: 1 Comm: swapper/0 Not tainted
> 5.13.0-rc6-next-20210615 #1
> [    0.785239] Hardware name: linux,dummy-virt (DT)
> [    0.786626] pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--)
> [    0.788352] pc : blk_finish_plug+0x88/0x270
> [    0.789598] lr : blk_queue_write_cache+0x34/0x80
d.com/1tyksDCCPiTvc0x6psxC3JvSWqJ/config

- Naresh



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