Re: Module problem on amd64

[Paul Goyette <paul%whooppee.com@localhost>]

On Thu, 27 Nov 2008, Christoph Egger wrote:

> This problem is known. See PR 32816.
> Workaround: move or rename /stand/amd64/5.99.03 to something else,
> so that no modules can be found.

In this case, making the modules "not found" wouldn't work, since there 
are no filesystems or anything else in the kernel itself;  everything 
_is_ a module.  Without the ffs module I wouldn't even get my root 
partition mounted.  :)

> Christoph
>
>
> Paul Goyette wrote:
> > I've built a amd64 kernel without any file systems or compat code in the
> > kernel itself;  all of those options lines are commented out in the
> > config file.
> >
> > I've installed the new kernel and the 5.99.03/modules and the new /boot
> > (from /usr/mdec/boot).
> >
> > Shortly after booting, while the various /etc/rc.d/ stuff is still going
> > on, the system panics.  Unfortunately, it seems to happen just as soon
> > as xdm takes over the console/display.
> >
> > So, I rebooted in single-user mode, and of course I needed to run fsck
> > on my root partition.  During the fsck, I got the following panic:
> >
> > panic: kernel diagnostic assertion "end <= VM_MAX_KERNEL_ADDRESS"
> > failed: file "/build/netbsd-local/src/sys/uvm/uvm_km.c", line 473
> > fatal breakpoint trap in supervisor mode
> > trap type 1 code 0 rip ffffffff80151565 cs 8 rflags 246 cr2 f0cbc9 cpl 0
> > rsp ffff80004bedaa90
> > Stopped in pid 0.8 (system) at netbsd:breakpoint+0x5:   leave
> > 0x1
> >
> > A backtrace produces
> >
> > breakpoint()+0x5
> > panic()+0x260
> > __kernassert()+0x2d
> > uvm_km_pgremove_intrsafe()+0x198
> > uvm_km_free()+0xb5
> > kobj_unload()+0x58
> > module_do_unload()+0xcd
> > module_thread()+0xe9
> >
> > The config file and dmesg output (from equivalent 5.99.02 boot) are
> > attached.
> >
> > ----------------------------------------------------------------------
> > |   Paul Goyette   | PGP DSS Key fingerprint: |  E-mail addresses:   |
> > | Customer Service | FA29 0E3B 35AF E8AE 6651 |  paul%whooppee.com@localhost   |
> > | Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette%juniper.net@localhost |
> > ----------------------------------------------------------------------
>
>
> !DSPAM:492e562d132441508863277!

----------------------------------------------------------------------
|   Paul Goyette   | PGP DSS Key fingerprint: |  E-mail addresses:   |
| Customer Service | FA29 0E3B 35AF E8AE 6651 |  paul%whooppee.com@localhost   |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette%juniper.net@localhost |
----------------------------------------------------------------------