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List: netbsd-current-users
Subject: Re: Module unloading still broken on amd64?
From: Paul Goyette <paul () whooppee ! com>
Date: 2008-12-31 17:47:39
Message-ID: Pine.NEB.4.64.0812310941360.14378 () quicky ! whooppee ! com
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Hmmm, I rebooted the machine. It dutifully took care of fsck'ing my
root partition and rebooted itself. During start-up it got a uvm fault:
uvm_fault(0xffff80004e77a008, 0x0, 2) -> e
kernel: page fault trap 0
Stopped in pid 339.1 (msater) at ffs:ufs_getattr+0x35: movq %rax,0x18(%rbx)
An attempt to get a backtrace fails:
ufs_getattr at ffs_ufs_getattr+0x35
?() at 0x8
Bad frame pointer: 0xffffffff80688fe0
I think I'll go back to my earlier kernel non-MODULAR kernel! :)
On Wed, 31 Dec 2008, Paul Goyette wrote:
> With a kernel built from sources updated just a couple hours ago (13:40:07
> UTC) I got the following panic:
>
> panic: kernel diagnostic assertion "me->flags & UVM_MAP_QUANTUM" failed: file
> "/usr/src/sys/uvm/uvm_map.c", line 820
> fatal breakpoint trap in supervisor mode
> trap type 1 code 0 rip ffffffff80150af5 cs 8 rflags 246 cr2 7f7ffd958d30 cpl
> 0 rsp ffff80004beef9c0
> stopped in pid 0.8 (system) at netbsd:breakpoint+0x5: leave
>
> The backtrace looks like this (transcribed manually):
>
> breakpoint+0x5
> panic+0x24d
> __kernassert_0x2d
> uvm_mapent_allocsplit+0x107
> uvm_map_clip_start+0x2b
> uvm_unmap_remove+0x2f7
> uvm_unmap1+0x68
> kobj_unload+0x58
> module_do_unload+0x10f
> module_thread+0xe9
>
> This is a totally modular kernel, with NO built-in modules.
>
> This was actually the second crash I had (the first one happened while X was
> running, so I didn't get the console info). I had logged in on the console
> and copied a file (approximately 5MB) from an nfs-mounted filesystem to a
> local file, and logged out. Some time later, I logged back in and tried to
> cd to a directory on the nfs-mounted fs, and got the panic immediately -
> before the shell-prompt came back.
>
> The system is totally wedged now, so I can't grab any more debug info from
> this event. Is there something useful that I can add to my
> ddd.commandonenter for the next occurrence?
>
>
>
> -------------------------------------------------------------------------
> | Paul Goyette | PGP DSS Key fingerprint: | E-mail addresses: |
> | Customer Service | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com |
> | Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at juniper.net |
> | | | pgoyette at netbsd.org |
> -------------------------------------------------------------------------
>
> !DSPAM:495badeb1861594415308!
>
>
>
-------------------------------------------------------------------------
| Paul Goyette | PGP DSS Key fingerprint: | E-mail addresses: |
| Customer Service | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at juniper.net |
| | | pgoyette at netbsd.org |
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