Re: UVM Fault

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Jun 16, 2008 at 12:15:12PM +1000, Sarton O'Brien wrote:
> On Sat, 14 Jun 2008 06:37:25 pm Mike Pumford wrote:
> > John R. Shannon wrote:
> > > Started happening immediately upon upgrade to 4.99.64:
> > > 
> > 
> > > 
> > > DOMU runs squid proxy. Repeatable fault occurs on forst web access via
> > > squid. Works if previous 4.99.63 kernel is used in DOMU.
> > > 
> > Seeing something similar here on a quad core 4.99.64 on amd64.
> 
> Here's the trace with registers as requested:
> 
> 
> Jun 16 12:04:59 squid[12711]: Squid Parent: child process 21641 started
> uvm_fault(0xffffa000141a1720, 0x0, 1) -> e
> fatal page fault in supervisor mode
> trap type 6 code 0 rip ffffffff803a34a6 cs e030 rflags 10282 cr2  0 cpl 0 rsp 
> ffffa00013be7810
> kernel: page fault trap, code=0
> Stopped in pid 16282.1 (pinger) at      netbsd:rb_tree_insert_node+0x26:      
>   
> m
> ovq     0(%rax),%r14
> rb_tree_insert_node() at netbsd:rb_tree_insert_node+0x26
> uvm_pagealloc_strat() at netbsd:uvm_pagealloc_strat+0x2d2

I've seen some commits from yamt@ about UVM and rb_tree. Maybe this is fixed
now ...

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--