Re: Kernel crash before login prompt

Below are the values you asked for


Just after dpcpu_init() in initarm()

--------In initarm and pcpup->pc_dynamic = 0x2886480
--------In initarm and dpcpu_off[0] = 0x2886480
--------In initarm and DPCPU_START = 0xffff000000681b80
--------In initarm and DPCPU_STOP = 0xffff000000687300
--------In initarm and DPCPU_BYTES = 0x5780
--------In initarm and DPCPU_SIZE = 0x6000
--------In initarm and PAGE_SIZE = 0x1000
--------In initarm and pcpu = 0xffff00000095bd80
--------In initarm and pcpu_entry_timerstate is 0xffff00000068ac80----
--------In initarm and __start_set_pcpu is 0----
--------In initarm and pcpu_entry_tdq is 0xffff00000068ac80----
---<<BOOT>>---


Below are after it crashes on db prompt:

db> p __start_set_pcpu
ffff000000681b80
db> p __stop_set_pcpu
ffff000000687300
db>  show dpcpu_off
dpcpu_off[ 0] = 0x2886480 (+ DPCPU_START = 0xffff000002f08000)
db> p pcpu_entry_tdq
ffff000000681c80

Regards
Faisal




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From: [email protected] <[email protected]> on behalf of Andrew Turner <[email protected]>
Date: Thursday, 29 June 2023 at 15:27
To: Sha Faisal <[email protected]>
Cc: [email protected] <[email protected]>, Steve Kiernan <[email protected]>, Mahesh Vardhamanaiah <[email protected]>
Subject: Re: Kernel crash before login prompt
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It looks like that exception is due to DPCPU_ID_PTR calculating an invalid pointer.

Can you print the contents of the dpcpu_off array, and the addresses of __start_set_pcpu and pcpu_entry_tdq.

Andrew


On 28 Jun 2023, at 19:45, Sha Faisal <[email protected]> wrote:

Hello Andrew,
Attached is the boot log,  also at the end I have pasted the remote gdb backtrace

Regards
faisal




Juniper Business Use Only
From: Andrew Turner <[email protected]<mailto:[email protected]>>
Date: Wednesday, 28 June 2023 at 20:47
To: Sha Faisal <[email protected]<mailto:[email protected]>>
Cc: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>>, Steve Kiernan <[email protected]<mailto:[email protected]>>, Mahesh Vardhamanaiah <[email protected]<mailto:[email protected]>>
Subject: Re: Kernel crash before login prompt

[External Email. Be cautious of content]


On 28 Jun 2023, at 13:18, Sha Faisal <[email protected]> wrote:



Hello FreeBSD team,


We have upgraded our FreeBSD kernel from 12 to main branch and with latest main branch one of our boxes with
Broadcom iProc Northstar2 BCM5871X SoC (Quad-core ARM Cortex-A57 64-bit 2GHz ARMv8-A CPU architecture) is crashing at mtx_spin_lock_flags(), with data_abort exception.
Sometimes the exception is raised at DPCPCU_PTR() functions.


Has anyone tried to boot freeBSD14 on the above mentioned BCM SoC?


Please share your inputs and comment

I don’t know of any issues with either of these, and don’t know of anyone running FreeBSD on this SoC.

Can you provide more details on what is failing, e.g. the boot log?

Andrew