Re: kernel trap 12

[Robert Garrett <rg70@xxxxxxxxxxxxx>]

Matthew Dillon wrote:

> 
> :from dmesg
> :
> :acd1: CD-RW <SONY CD-RW CRX175E> at ata1-slave PIO4
> :Mounting root from ufs:/dev/ad0s3a
> :kernel trap 12 with interrupts disabled
> :kernel trap 12 with interrupts disabled
> :kernel trap 12 with interrupts disabled
> :kernel trap 12 with interrupts disabled
> :kernel trap 12 with interrupts disabled
> :
> :
> :I'm not sure what this means or where it comes from,
> :but I thought I would point it out as well. However the
> :system comes up and operates normally.
> :
> :Robert Garrett
> 
>     The kernel is accessing data from userspace via subyte() and taking
>     a page fault with interrupts disabled.  It's during the start_init()
>     code and occurs because I threw a CLI in fork_trampoline that doesn't
>     need to be there.  It's harmless.
> 
>     Here's a patch that removes the CLI. I'll commit this tomorrow after
>     I make sure SMP doesn't hicup on it.
> 
> -Matt
> Matthew Dillon
> <dillon@xxxxxxxxxxxxx>
<patch snipped>

Thanks again Matt. This works but  I don't have a smp box to
test on.

Rob