Roberto Gonzalez Azevedo
2006-Aug-10 15:40 UTC
[Xen-users] Error with NFS and XEN Unstable (High network load)
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Error with NFS and XEN Unstable (High network load):
On domU machine:
root@domU:# mount -t nfs real-machine-not-xen-or-any-virtual:/mnt /data
[ok]
Crash:
root@domU:# time dd if=/dev/zero of=/data/test.txt bs=16k count=16384
[NOT OK]
My hardware is Dell PowerEdge 1850, network card module e1000.
Here is the crash:
root@dom0:# xm console machine
"
Unable to handle kernel NULL pointer dereference at virtual address 00000115
printing eip:
*pde = ma 00000000 pa fffff000
Oops: 0002 [#1]
SMP
Modules linked in:
CPU: 0
EIP: 0061:[<c02f9f99>] Not tainted VLI
EFLAGS: 00010086 (2.6.16.27-xenU_09-08-2006 #3)
EIP is at network_tx_buf_gc+0xdb/0x277
eax: 00000095 ebx: 00000087 ecx: c0508c54 edx: 00000000
esi: c0508380 edi: 00000085 ebp: c0499e98 esp: c0499e70
ds: 007b es: 007b ss: 0069
Process swapper (pid: 0, threadinfo=c0498000 task=c0434500)
Stack: <0>c0508c54 00000000 c0498000 c0508000 00026c3f 00026c8b 00026c6e
00000000
c0508408 c0508380 c0499eac c02fa230 c7d98a40 00000000 00000000
c0499ed4
c013c911 00000107 c0508000 c0499f3c c0499f3c 00000107 00008380
c048d780
Call Trace:
[<c0105580>] show_stack_log_lvl+0xb9/0x103
[<c0105766>] show_registers+0x19c/0x232
[<c0105a64>] die+0x116/0x233
[<c01112ca>] do_page_fault+0x4e8/0x8cc
[<c0104ff7>] error_code+0x2b/0x30
[<c02fa230>] netif_int+0x29/0x121
[<c013c911>] handle_IRQ_event+0x3c/0xac
[<c013ca0d>] __do_IRQ+0x8c/0xef
[<c0106a62>] do_IRQ+0x1d/0x29
[<c02ee27b>] evtchn_do_upcall+0x94/0xc8
[<c0105039>] hypervisor_callback+0x3d/0x48
[<c010382f>] xen_idle+0x2d/0x53
[<c01038c0>] cpu_idle+0x6b/0xb6
[<c0102035>] rest_init+0x35/0x37
[<c049a4ed>] start_kernel+0x2e7/0x392
[<c010006f>] 0xc010006f
Code: 89 44 24 04 89 14 24 e8 cf 54 ff ff c7 84 9e d8 08 00 00 00 00 00
00 8b 86 d0 00 00 00 89 84 9e d0 00 00 00 89 9e d0 00 00 00 90 <ff> 8f
90 00 00 00 0f 94 c0 84 c0 75 4e 8b 4e 74 83 45 f0 01 8b
<0>Kernel panic - not syncing: Fatal exception in interrupt
"
And the domU dies ...
Is it a bug ?
- --
- ----------------------------
Roberto Gonzalez Azevedo
Xen Unstable, Kernel 2.6.16.27
(dom0 = Ubuntu 6.0.6 Dapper, domU = Slackware 10.2)
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