Re: yet another kernel panic
On 2004-10-09, Matthew Dillon <dillon@apollo.backplane.com> wrote:
>
>:On 2004-09-06, Matthew Dillon <dillon@apollo.backplane.com> wrote:
>:>:im running almost latest current (from yesterday) with that patch and am
>:>:wondering if there are any test apps to check if the patch works or should i
>:>:just wait if it shows up by itself?
>:...
>:
>:i got another kernel panic, dont know if its related or not, but i uploaded the
>:memory dump to leaf:~rumko/memory_dumps/8.10.2004/
>
> Rum, you aren't running that patch I emailed you last time (which has
> since gone into the tree). I verified it by disassembling vm_waitproc():
>
> 0xc02c81bc <vm_waitproc>: push %ebp
> 0xc02c81bd <vm_waitproc+1>: mov %esp,%ebp
> 0xc02c81bf <vm_waitproc+3>: push %ebx
> 0xc02c81c0 <vm_waitproc+4>: mov 0x8(%ebp),%ebx
> 0xc02c81c3 <vm_waitproc+7>: push %ebx
> 0xc02c81c4 <vm_waitproc+8>: call 0xc0362bec <cpu_proc_wait>
> 0xc02c81c9 <vm_waitproc+13>: push %ebx
> 0xc02c81ca <vm_waitproc+14>: call 0xc02c90a0 <vmspace_exitfree>
> 0xc02c81cf <vm_waitproc+19>: mov 0xfffffffc(%ebp),%ebx
> 0xc02c81d2 <vm_waitproc+22>: leave
> 0xc02c81d3 <vm_waitproc+23>: ret
>
> There should be a 'movl $0x0,0x1c(%ebx)' in there that corresponds
> to the 'p->p_stats = NULL' line that was added to vm_waitproc() in
> vm/vm_glue.c 1.28, and there isn't.
>
> I recommend upgrading to DragonFly_Stable. It has that patch plus a
> number of other bugs fixes.
>
> -Matt
> Matthew Dillon
> <dillon@backplane.com>
but i should have that patch
copy/pasted from the source file:
vm_waitproc(struct proc *p)
{
p->p_stats = NULL;
cpu_proc_wait(p);
vmspace_exitfree(p); /* and clean-out the vmspace */
}
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