[Lxc-users] LXC container SSH X forwarding kernel crash

[Daniel Lezcano]

On 07/26/2010 11:34 AM, Ferenc Holzhauser wrote:
> On 26 July 2010 10:56, Daniel Lezcano<daniel.lezcano at free.fr>  wrote:
>    
>> On 07/26/2010 08:57 AM, Ferenc Holzhauser wrote:
>>      
>>> Hi,
>>>
>>> I beileve I can reproduce it and get a crash image.
>>> Then apport or crash could possibly show something useful.
>>>
>>> Would that help?
>>>
>>>        
>> Arie gave a JPG image of the kernel crash which is in ip_rcv_finish, a good
>> indication.
>> Yes, that would be great if you can check if the bug is raised in the same
>> place.
>> If possible, that would be nice to check if the bug happens with a 2.6.34.1
>> or 2.6.35-rc6 kernel too.
>>
>> As I have the same hardware than Arie, I was expecting to reproduce the bug
>> easily :(
>>
>> Is *tc* used on your system or any specific network configuration ?
>>
>> Thanks
>>     -- Daniel
>>
>>
>>
>>
>>
>>
>>      
> Daniel,
>
> I've already searched for a known issue based on the crash information
> I have, with no luck.
> I don't think I have anything special. Attached my interfaces and
> lxc-config files as well as lspci and lsmod output.
>    

Thanks.

> Below is the information I have from a crash, perhaps you can spot
> something more in this.
>
> [  177.390249] BUG: unable to handle kernel NULL pointer dereference at (null)
> [  177.390975] IP: [<(null)>] (null)
> [  177.391362] PGD 0
> [  177.391649] Oops: 0010 [#1] SMP
> [  177.392110] last sysfs file:
> /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor
> [  177.392632] CPU 1
> [  177.392917] Modules linked in: veth bridge stp fbcon tileblit font
> bitblit softcursor vga16fb vgastate serio_raw ioatdma lp parport
> raid10 raid456 async_raid6_recov async_pq usbhid hid raid6_pq
> async_xor mptsas mptscsih xor async_memcpy mptbase async_tx ahci igb
> raid1 scsi_transport_sas dca raid0 multipath linear
> [  177.398732] Pid: 0, comm: swapper Not tainted 2.6.32-22-server
> #36-Ubuntu SUN FIRE X4170 SERVER
> [  177.399353] RIP: 0010:[<0000000000000000>]  [<(null)>] (null)
> [  177.399939] RSP: 0018:ffff880010e23d38  EFLAGS: 00010293
> [  177.400355] RAX: ffff8802739ccec0 RBX: ffff8802757a9b00 RCX: 0000000000000000
> [  177.400820] RDX: 0000000000000000 RSI: ffff8802757a9b00 RDI: ffff8802757a9b00
> [  177.401284] RBP: ffff880010e23d70 R08: ffffffff8149f0a0 R09: ffff880010e23d38
> [  177.401748] R10: ffff88027728d080 R11: 0000000000000000 R12: ffff8802674e1050
> [  177.402212] R13: ffff8802757a9b00 R14: 0000000000000008 R15: ffffffff8185eca0
> [  177.402679] FS:  0000000000000000(0000) GS:ffff880010e20000(0000)
> knlGS:0000000000000000
> [  177.403227] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> [  177.403621] CR2: 0000000000000000 CR3: 0000000001001000 CR4: 00000000000006e0
> [  177.404086] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [  177.404550] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [  177.418610] Process swapper (pid: 0, threadinfo ffff88027710c000,
> task ffff8802771044d0)
> [  177.447188] Stack:
> [  177.447190]  ffffffff8149f1cd 0000000000000002 ffff8802757a9b00
> ffff8802757a9b00
> [  177.447193]<0>  ffff88024d92b800 ffff8802757a9b00 0000000000000008
> ffff880010e23db0
> [  177.447196]<0>  ffffffff8149f755 0000000080000000 ffff880273381158
> ffff8802733f8000
> [  177.447199] Call Trace:
> [  177.447201]<IRQ>
> [  177.447207]  [<ffffffff8149f1cd>] ? ip_rcv_finish+0x12d/0x440
> [  177.447210]  [<ffffffff8149f755>] ip_rcv+0x275/0x360
> [  177.447216]  [<ffffffff8146ffea>] netif_receive_skb+0x38a/0x5d0
> [  177.447219]  [<ffffffff814702b3>] process_backlog+0x83/0xe0
> [  177.447225]  [<ffffffff810880c2>] ? enqueue_hrtimer+0x82/0xd0
> [  177.447229]  [<ffffffff81470adf>] net_rx_action+0x10f/0x250
> [  177.447233]  [<ffffffff8106e257>] __do_softirq+0xb7/0x1e0
> [  177.447237]  [<ffffffff810c4880>] ? handle_IRQ_event+0x60/0x170
> [  177.447242]  [<ffffffff810142ec>] call_softirq+0x1c/0x30
> [  177.447245]  [<ffffffff81015cb5>] do_softirq+0x65/0xa0
> [  177.447247]  [<ffffffff8106e0f5>] irq_exit+0x85/0x90
> [  177.447252]  [<ffffffff8155c675>] do_IRQ+0x75/0xf0
> [  177.447255]  [<ffffffff81013b13>] ret_from_intr+0x0/0x11
> [  177.447256]<EOI>
> [  177.447261]  [<ffffffff8130ccd7>] ? acpi_idle_enter_bm+0x28a/0x2be
> [  177.447265]  [<ffffffff8130ccd0>] ? acpi_idle_enter_bm+0x283/0x2be
> [  177.447270]  [<ffffffff81449297>] ? cpuidle_idle_call+0xa7/0x140
> [  177.447278]  [<ffffffff81011e63>] ? cpu_idle+0xb3/0x110
> [  177.447283]  [<ffffffff8154f5e0>] ? start_secondary+0xa8/0xaa
> [  177.447284] Code:  Bad RIP value.
> [  177.447290] RIP  [<(null)>] (null)
> [  177.447292]  RSP<ffff880010e23d38>
> [  177.447293] CR2: 0000000000000000
>    

It is the same stack as Arie. Do you have iptables rules set on your 
system ?