[SOLVED] Re: Kernel Panic On Boot after r327979

[Pete Wright]

On 01/15/2018 09:26, Pete Wright wrote:
> Hello,
>
> I updated an amd64 system last night to r327979 and it panics into gdb 
> after rc attempts to mount local filesystems.
>
> The panic line is:
> Fatal trap 12: page fault while in kernel mode
>
> gdb states that it stopped at:
> Stopped at    prison_allow+0x4    movq    0x30(%rdi),%rax
>
>
> Is this a known issue?  This is my primary workstation - so I'm going 
> to revert back to an older kernel, but if more info is needed I can 
> put some cycles into debugging today.
>
closing the loop on this.  it looks like the panic was due to debugfs 
being mounted on my system.  debugfs is part of the drm-next-kmod port 
which enables i915 gfx on recent intel GPU's, and debugfs doesn't *need* 
to be mounted but is quite useful and fun to play with.

anywho - the fix on my end is to:
- remove the drm-next-kmod port/pkg
- build and install latest kernel+world
- reboot and build/install the drm-next-kmod port/pkg
- reboot and enjoy i915 graphics

i'm kinda interested in what prison_allow does now as i haven't run 
across it before.  is this part of the jails infrastrucutre?

cheers,
-p

-- 
Pete Wright
pete at nomadlogic.org
@nomadlogicLA