On Wednesday 16 March 2005 18:20, Keir Fraser wrote:
> Someone is attempting to set _PAGE_GLOBAL bit in one of the page-table
> entries.
> XenLinux should never do this -- do you have any suspicious-looking
> modules installed in your kernel that may need fixing?
Nothing that doesn't come with the vanilla sources; lsmod says:
Module Size Used by
pppoatm 4640 1
nfsd 92328 9
exportfs 5024 1 nfsd
lockd 61416 2 nfsd
sunrpc 132676 12 nfsd,lockd
ipt_MASQUERADE 2528 1
iptable_nat 23240 2 ipt_MASQUERADE
ip_conntrack 40340 2 ipt_MASQUERADE,iptable_nat
ipt_REJECT 5632 9
iptable_filter 2752 1
ip_tables 16640 4
ipt_MASQUERADE,iptable_nat,ipt_REJECT,iptable_filter
bridge 45944 0
speedtch 10600 0
firmware_class 7552 1 speedtch
usb_atm 13360 2 speedtch
uhci_hcd 30736 0
usbcore 106616 4 speedtch,usb_atm,uhci_hcd
br2684 7236 0
atm 37528 5 pppoatm,usb_atm,br2684
ppp_generic 21396 5 pppoatm
slhc 6304 1 ppp_generic
loop 12968 0
> It would be interesting to know, if you kill the test that fails above
> in the Xen code, whether your problems all go away. It's the test that
> starts:
> if ( unlikely(l1v & (_PAGE_GLOBAL|_PAGE_PAT)) )
I commented out that part of memory.c, and it still crashes. This time the end
of the output is:
open("/usr/lib/wine/apphelp.dll.so", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No
suchfile or directory)
rt_sigprocmask(SIG_BLOCK, NULL, [RTMIN], 8) = 0
(XEN) (file=extable.c, line=71) Pre-exception: fc530a7e -> fc530b34
(XEN) (file=traps.c, line=463) Page fault: fc530b49 -> fc505d30
(XEN) BUG at domain.c:143
(XEN) CPU: 0
(XEN) EIP: 0808:[<fc505e0e>]
(XEN) EFLAGS: 00011296
(XEN) eax: 00000000 ebx: fcff99e0 ecx: 00000000 edx: 00000000
(XEN) esi: 000e0003 edi: c010a960 ebp: 77acdfa0 esp: fc503f9c
(XEN) ds: 0810 es: 0810 fs: 0810 gs: 0810 ss: 0810
(XEN) Stack trace from ESP=fc503f9c:
(XEN) fc5323c8 fc532467 0000008f 000e0003 [fc505d30] fcff99e0 000e0003
77ef5ca4
(XEN) 0000007b 00000000 ffffffff c010a960 77acdfa0 00000000 000e0003
c0109904
(XEN) 00000061 00011246 d2411000 00000069 0000007b 0000007b 0000003b
00000033
(XEN) fcff99e0
(XEN) Call Trace from ESP=fc503f9c: [<fc505d30>]
****************************************
CPU0 FATAL TRAP: vector = 6 (invalid operand)
[error_code=0000]
Aieee! CPU0 is toast...
****************************************
Reboot in five seconds...
- Peter.
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