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Date: Thu, 15 Apr 2021 18:41:04 +0000
From: Dmitry Chagin <dchagin@freebsd.org>
To: Lev Serebryakov <lev@freebsd.org>
Cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re:
 FreeBSD-14.0-CURRENT-amd64-20210408-15dc713ceb5-245885-memstick.img fails to
 boot on Haswell-based laptop.
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On Thu, Apr 15, 2021 at 06:04:55PM +0300, Lev Serebryakov wrote:
> 
>   I'm trying to install CURRENT (FreeBSD-14.0-CURRENT-amd64-20210408-15dc713ceb5-245885-memstick.img) snapshot onto Lenovo Thinkpad T540p, i7-4700 based laptop.
> 
>   Kernel traps on boot with "Fatal trap 9" and this stack trace (hand-copied):
> 
> calltrap()
> --- trap 0x9
> run_interrupt_driven_config_hooks()
> boot_run_interrupt_driven_config_hooks()
> mi_startup()
> 
>   It is 100% reproducible, and I cannot issue commands to kernel debugger, keyboard is dead.
> 
>   Enabling verbose boot helps, with verbose boot it boots to installer.
> 
>   Looks like some race condition.
> 
>   Is it known problem?

try to boot verbose

> 
> -- 
> // Lev Serebryakov
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