kern/41169: RC3 page faults every few hours

[rtr%calculon.in.omicron-persei-8.net@localhost]

>Number:         41169
>Category:       kern
>Synopsis:       RC3 page faults every few hours
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Apr 07 21:40:00 +0000 2009
>Originator:     rtr%netbsd.org@localhost
>Release:        NetBSD 5.0_RC3
>Organization:
netbsd
>Environment:
System: NetBSD calculon.in.omicron-persei-8.net 5.0_RC3 NetBSD 5.0_RC3 
(XEN3_DOM0) #0: Fri Mar 20 07:11:29 UTC 2009 
builds%b6.netbsd.org@localhost:/home/builds/ab/netbsd-5-0-RC3/amd64/200903200521Z-obj/home/builds/ab/netbsd-5-0-RC3/src/sys/arch/amd64/compile/XEN3_DOM0
 amd64
Architecture: x86_64
Machine: amd64
>Description:

netbsd drops me into ddb every few hours with a page fault trap. ran fine
for a week when it had no network load. after moving dhcpd and named services
to the box it now crashes every few hours.

this is entirely RC3 kernel and userland, no compat stuff all obtained from
ftp.netbsd.org.

please let me know what other info to provide on the next crash and how to
get it.

thanks

(the following is finger pasted)

fffa00009dd7a68
kernel: page fault trap, code=0
Stopped in pid 0.2 (system) at  netbsd:rnd_add_uint32+0x1f:     testb   
$0x2,0x25(%r12)
rnd_add_uint32() at netbsd:rnd_add_uint32+0x1f
pckbcintr() at netbsd:pckbcintr+0x6e
Xresume_xenev6() at netbsd:Xresume_xenev6+0x55
--- interrupt ---
Xspllower() at netbsd:Xspllower+0xe
idle_loop() at netbsd:idle_loop+0xba
ds              0
es              0xe008
fs              0x43a3
gs              0x7a68
rdi             0x10
rsi             0x3d08
rbp             0xffffa00009dd7a98
rbx             0x8
rdx             0x60
rcx             0
rax             0x8
r8              0xffffffff80b55b80      cpu_info_primary
r9              0x1
r10             0xffffa00009dd7be0
r11             0xffffffff80295d10      pckbcintr
r12             0x20
r13             0xffffffff80be0560      pckbc_consdata
r14             0x3d08
r15             0
rip             0xffffffff803d3b0f      rnd_add_uint32+0x1f
cs              0xe030
rflags          0x10282
rsp             0xffffa00009dd7a68
ss              0xe02b
netbsd:rnd_add_uint32+0x1f:             testb   $0x2,0x25(%r12)
db> bt
rnd_add_uint32() at netbsd:rnd_add_uint32+0x1f
pckbcintr() at netbsd:pckbcintr+0x6e
Xresume_xenev6() at netbsd:Xresume_xenev6+0x55
--- interrupt ---
Xspllower() at netbsd:Xspllower+0xe
idle_loop() at netbsd:idle_loop+0xba
db>

>How-To-Repeat:
boot it, run it with some network traffic.

>Fix:
none