Please configure DDB and INVARIANTS in your kernel when you 
use this patch, and send me output from the "trace" command
in DDB when it panics.


In message <[EMAIL PROTECTED]>, Robert Drehmel writes:
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>In <84513.966631292@critter>, Poul-Henning Kamp <[EMAIL PROTECTED]>
>> Please look at, test and review:
>When booting the kernel built from a sys tree patched with
>the above patch, i get the following: (dmesg.out is attached)
>Mounting root from ufs:/dev/ad0s1a
>devfs_mount(mp = 0xc0b2be00)
>devfs_mount: root vp = 0xc6f66b00
>devfs_statfs(mp = 0xc0b2be00)
>devfs_mount: at /dev
>cloned ad0s1b -> 0xc0b31b80
>Fatal trap 12: page fault while in kernel mode
>fault virtual address   = 0xe8
>fault code              = supervisor write, page not present
>instruction pointer     = 0x8:0xc024176c
>stack pointer           = 0x10:0xc7560e3c
>frame pointer           = 0x10:0xc7560e54
>code segment            = base 0x0, limit 0xfffff, type 0x1b
>                        = DPL 0, pres 1, def32 1, gran 1
>processor eflags        = interrupt enabled, resume, IOPL = 0
>current process         = 16 (swapon)
>interrupt mask          = none
>trap number             = 12
>panic: page fault

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
[EMAIL PROTECTED]         | TCP/IP since RFC 956
FreeBSD coreteam member | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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