Re: [Xen-devel] Xen 4.0.1 & kernel Oops: 0000 [#1] SMP

["Olivier B." <xen.list@xxxxxxxxx>]

Sorry, here is the full trace :

Jul 11 00:34:38 keron kernel: [10801.850551]   alloc irq_desc for 1198 
on node 0
Jul 11 00:34:38 keron kernel: [10801.850554]   alloc kstat_irqs on node 0

Jul 11 00:34:38 keron kernel: [10802.030686] BUG: unable to handle 
kernel NULL pointer dereference at 0000000000000110
Jul 11 00:34:38 keron kernel: [10802.031365] IP: [<ffffffff8121d070>] 
netback_uevent+0x90/0xb9
Jul 11 00:34:38 keron kernel: [10802.031721] PGD 3880e067 PUD 3ef5c067 
PMD 0
Jul 11 00:34:38 keron kernel: [10802.032082] Oops: 0000 [#1] SMP
Jul 11 00:34:38 keron kernel: [10802.032442] last sysfs file: 
/sys/devices/vif-1-0/uevent
Jul 11 00:34:38 keron kernel: [10802.032772] CPU 1
Jul 11 00:34:38 keron kernel: [10802.033093] Modules linked in: 8021q 
garp [last unloaded: scsi_wait_scan]
Jul 11 00:34:38 keron kernel: [10802.033459] Pid: 4998, comm: udevd Not 
tainted 2.6.32.16-dae-dom0-gb97a312 #1 S5520HC
Jul 11 00:34:38 keron kernel: [10802.034113] RIP: 
e030:[<ffffffff8121d070>]  [<ffffffff8121d070>] netback_uevent+0x90/0xb9
Jul 11 00:34:38 keron kernel: [10802.034816] RSP: e02b:ffff88003773de08  
EFLAGS: 00010246
Jul 11 00:34:38 keron kernel: [10802.035156] RAX: 0000000000000000 RBX: 
ffff8800370ad200 RCX: ffff880038809154
Jul 11 00:34:38 keron kernel: [10802.035500] RDX: 000000000000002f RSI: 
ffff8800377e5620 RDI: ffff880038809000
Jul 11 00:34:38 keron kernel: [10802.035848] RBP: ffff880038809000 R08: 
000000000000000a R09: ffff880038809904
Jul 11 00:34:38 keron kernel: [10802.036190] R10: ffff880038809154 R11: 
00c0ade35678d607 R12: 0000000000000000
Jul 11 00:34:38 keron kernel: [10802.036534] R13: ffff8800377e5620 R14: 
ffff88003d123000 R15: ffffffff81618590
Jul 11 00:34:38 keron kernel: [10802.036884] FS:  00007fd3004287a0(0000) 
GS:ffff880002134000(0000) knlGS:0000000000000000
Jul 11 00:34:38 keron kernel: [10802.037561] CS:  e033 DS: 0000 ES: 0000 
CR0: 000000008005003b
Jul 11 00:34:38 keron kernel: [10802.037906] CR2: 0000000000000110 CR3: 
0000000038b2e000 CR4: 0000000000002660
Jul 11 00:34:38 keron kernel: [10802.038265] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Jul 11 00:34:38 keron kernel: [10802.038626] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Jul 11 00:34:38 keron kernel: [10802.038966] Process udevd (pid: 4998, 
threadinfo ffff88003773c000, task ffff880037232240)
Jul 11 00:34:38 keron kernel: [10802.039632] Stack:
Jul 11 00:34:38 keron kernel: [10802.039969]  0000000000000001 
ffff8800370ad240 ffff880038809000 ffff88003fc47340
Jul 11 00:34:38 keron kernel: [10802.040345] <0> ffff8800370ad250 
ffffffff81245d22 ffffffff8100e1ff ffffffff810a0d4b
Jul 11 00:34:38 keron kernel: [10802.041024] <0> ffffffff81618560 
0000000000000000 ffff880038809000 ffffffff812469d5
Jul 11 00:34:38 keron kernel: [10802.042070] Call Trace:
Jul 11 00:34:38 keron kernel: [10802.042406]  [<ffffffff81245d22>] ? 
dev_uevent+0xff/0x141
Jul 11 00:34:38 keron kernel: [10802.042764]  [<ffffffff8100e1ff>] ? 
xen_restore_fl_direct_end+0x0/0x1
Jul 11 00:34:38 keron kernel: [10802.043126]  [<ffffffff810a0d4b>] ? 
__kmalloc+0xac/0xce
Jul 11 00:34:38 keron kernel: [10802.043467]  [<ffffffff812469d5>] ? 
show_uevent+0x7e/0xd1
Jul 11 00:34:38 keron kernel: [10802.043813]  [<ffffffff81245a08>] ? 
dev_attr_show+0x1e/0x44
Jul 11 00:34:38 keron kernel: [10802.044157]  [<ffffffff8107c0b2>] ? 
__get_free_pages+0x9/0x46
Jul 11 00:34:38 keron kernel: [10802.044506]  [<ffffffff810eb4f2>] ? 
sysfs_read_file+0xab/0x131
Jul 11 00:34:38 keron kernel: [10802.044873]  [<ffffffff810a696a>] ? 
vfs_read+0xa1/0xfc
Jul 11 00:34:38 keron kernel: [10802.045219]  [<ffffffff810a6a78>] ? 
sys_read+0x45/0x6b
Jul 11 00:34:38 keron kernel: [10802.045561]  [<ffffffff81010a02>] ? 
system_call_fastpath+0x16/0x1b
Jul 11 00:34:38 keron kernel: [10802.045916] Code: 81 31 c0 48 89 ef e8 
50 93 f9 ff 85 c0 74 0f 4c 89 ef bd f4 ff ff ff e8 49 2d e8 ff eb 2c 4c 
89 ef e8 3f 2d e8 ff 48 89 ef 31 c0 <49> 8b 94 24 10 01 00 00 48 c7 c6 
6c 0b 55 81 bd f4 ff ff ff e8
Jul 11 00:34:38 keron kernel: [10802.047250] RIP  [<ffffffff8121d070>] 
netback_uevent+0x90/0xb9
Jul 11 00:34:38 keron kernel: [10802.047597]  RSP <ffff88003773de08>
Jul 11 00:34:38 keron kernel: [10802.047918] CR2: 0000000000000110
Jul 11 00:34:38 keron kernel: [10802.048551] ---[ end trace 
0461e99cbca015f5 ]---
Jul 11 00:34:38 keron kernel: [10802.067905]   alloc irq_desc for 1197 
on node 0
Jul 11 00:34:38 keron kernel: [10802.068277]   alloc kstat_irqs on node 0
Jul 11 00:34:38 keron kernel: [10802.119171] device vif1.0 entered 
promiscuous mode
Jul 11 00:34:38 keron kernel: [10802.119071] eth0: port 2(vif1.0) 
entering forwarding state

Le 11/07/2010 00:42, Olivier B. a écrit :
> Hi,
>
> I'm using Xen 4 (version 4.0.1~rc3-1 from Debian sid), with a 
> 2.6.32.16-*-gb97a312 pv-ops kernel (the stable-2.6.32 branch) ; on a 
> Debian Squeeze amd64 system, with udev version 158.
> When I try to create a DomU, with a bridge setup, I obtain that :
>
> # time xm create /etc/xen/slhoka.cfg
> Using config file "/etc/xen/slhoka.cfg".
>
> Message from syslogd@keron at Jul 11 00:34:38 ...
>  kernel:[10802.032082] Oops: 0000 [#1] SMP
>
> Message from syslogd@keron at Jul 11 00:34:38 ...
>  kernel:[10802.032442] last sysfs file: /sys/devices/vif-1-0/uevent
>
> Message from syslogd@keron at Jul 11 00:34:38 ...
>  kernel:[10802.039632] Stack:
>
> Message from syslogd@keron at Jul 11 00:34:38 ...
>  kernel:[10802.042070] Call Trace:
>
> Message from syslogd@keron at Jul 11 00:34:38 ...
>  kernel:[10802.045916] Code: 81 31 c0 48 89 ef e8 50 93 f9 ff 85 c0 74 
> 0f 4c 89 ef bd f4 ff ff ff e8 49 2d e8 ff eb 2c 4c 89 ef e8 3f 2d e8 
> ff 48 89 ef 31 c0 <49> 8b 94 24 10 01 00 00 48 c7 c6 6c 0b 55 81 bd f4 
> ff ff ff e8
> Message from syslogd@keron at Jul 11 00:34:38 ...
>  kernel:[10802.047918] CR2: 0000000000000110
>
> Error: Device 2048 (vbd) could not be connected. Hotplug scripts not 
> working.
> real    1m41.546s
> user    0m0.084s
> sys    0m0.040s
>
> The "hotplug" error is probably thrown because of my udev version 
> (158), no ? But the kernel oops seem strange to me.
> If that can help, it's a "recent" CPU :
>
> processor    : 0
> vendor_id    : GenuineIntel
> cpu family    : 6
> model        : 44
> model name    : Intel(R) Xeon(R) CPU           X5650  @ 2.67GHz
> stepping    : 2
> cpu MHz        : 2666.700
> cache size    : 12288 KB
> fpu        : yes
> fpu_exception    : yes
> cpuid level    : 11
> wp        : yes
> flags        : fpu de tsc msr pae mce cx8 apic sep mtrr mca cmov pat 
> clflush acpi mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc 
> rep_good nonstop_tsc aperfmperf pni pclmulqdq est ssse3 cx16 sse4_1 
> sse4_2 popcnt aes hypervisor lahf_lm ida arat
> bogomips    : 5333.40
> clflush size    : 64
> cache_alignment    : 64
> address sizes    : 40 bits physical, 48 bits virtual
> power management:
>
>
> Thanks for any advice,
> Olivier B.
>
>
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> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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