Re: UVM Fault

["John R. Shannon" <john%johnrshannon.com@localhost>]

It appears to be fixed. Its working with a kernel built from source 
updated 2008-06-17 14:30:00 UTC

Manuel Bouyer wrote:
> 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 ...


--

John R. Shannon
john%johnrshannon.com@localhost