[Lxc-users] lxc-stop crashes the host

[Daniel Lezcano]

On 10/24/2011 07:46 PM, Ulli Horlacher wrote:
> On Mon 2011-10-24 (12:33), Serge E. Hallyn wrote:
>
>>> http://fex.rus.uni-stuttgart.de/tmp/vms1-crash.png
>>>
>>> It's a pity, but this console server (HP IP console) cannot log ASCII
>>> based, it is GUI only. I can make only screenshots and cannot scroll back,
>>> so the beginning of the kernel crash message is missing.
>>>
>>> Any tips for debugging or even problem solving?
>> Can you use some screencast program to grab the video as the error passes
>> by on the gui?  Then export a .jpg from the screencast video?
> I have now booted vms1 with kernel 2.6.35 instead of 2.6.38 (as before)/
> This kernel crashes also on lxc-stop but it writes something to
> /var/log/kern.log :
>
> 2011-10-24 19:34:40 [  318.526208] br0: port 2(veth2WqDOb) entering forwarding state
> 2011-10-24 19:34:40 [  318.675038] br0: port 2(veth2WqDOb) entering disabled state
> 2011-10-24 19:34:40 [  318.703903] ------------[ cut here ]------------
> 2011-10-24 19:34:40 [  318.703960] kernel BUG at /build/buildd/linux-lts-backport-maverick-2.6.35/net/netfilter/xt_recent.c:609!
> 2011-10-24 19:34:40 [  318.704017] invalid opcode: 0000 [#1] SMP 
> 2011-10-24 19:34:40 [  318.704137] last sysfs file: /sys/devices/system/cpu/cpu3/cache/index1/shared_cpu_map
> 2011-10-24 19:34:40 [  318.704189] CPU 3 
> 2011-10-24 19:34:40 [  318.704231] Modules linked in: xt_recent veth btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs reiserfs nfs fscache pci_stub vboxpci vboxnetadp vboxnetflt vboxdrv nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs ipt_MASQUERADE iptable_nat nf_nat ipt_REJECT kvm_intel kvm nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_LOG xt_tcpudp iptable_filter ip_tables x_tables bridge 8021q garp stp ppdev parport_pc i5000_edac edac_core i5k_amb psmouse serio_raw shpchp lp parport tg3 floppy megaraid_sas
> 2011-10-24 19:34:40 [  318.706762] 
> 2011-10-24 19:34:40 [  318.706806] Pid: 21, comm: netns Not tainted 2.6.35-30-server #60~lucid1-Ubuntu D2119/PRIMERGY RX300 S3   
> 2011-10-24 19:34:40 [  318.706861] RIP: 0010:[<ffffffffa08eb0ac>]  [<ffffffffa08eb0ac>] recent_net_exit+0x3c/0x40 [xt_recent]
> 2011-10-24 19:34:40 [  318.706960] RSP: 0018:ffff880236d67d90  EFLAGS: 00010283
> 2011-10-24 19:34:40 [  318.707008] RAX: ffff88022c0a46e0 RBX: ffffffffa08ec860 RCX: 0200000000000081
> 2011-10-24 19:34:40 [  318.707059] RDX: ffff880235ba5200 RSI: ffff880236d67dd0 RDI: ffff88022a6b8880
> 2011-10-24 19:34:40 [  318.707124] RBP: ffff880236d67d90 R08: fffff000fffff000 R09: 0000000000000000
> 2011-10-24 19:34:40 [  318.707189] R10: ffff88022a6c4000 R11: ffffffc8ffffffc8 R12: ffff88022a6b8880
> 2011-10-24 19:34:40 [  318.707253] R13: ffff880236d67dd0 R14: ffff880001e18dc0 R15: ffff880236d67fd8
> 2011-10-24 19:34:40 [  318.707319] FS:  0000000000000000(0000) GS:ffff880001f80000(0000) knlGS:0000000000000000
> 2011-10-24 19:34:40 [  318.707400] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> 2011-10-24 19:34:40 [  318.707463] CR2: 00007f0c32bf61e0 CR3: 0000000232f69000 CR4: 00000000000006e0
> 2011-10-24 19:34:40 [  318.707528] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> 2011-10-24 19:34:40 [  318.707593] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> 2011-10-24 19:34:40 [  318.707659] Process netns (pid: 21, threadinfo ffff880236d66000, task ffff880236d5c4d0)
> 2011-10-24 19:34:40 [  318.707738] Stack:
> 2011-10-24 19:34:40 [  318.707793]  ffff880236d67dc0 ffffffff814ac4a6 ffff880236d67da0 ffff880236d67dd0
> 2011-10-24 19:34:40 [  318.707970] <0> ffffffffa08ec860 ffffffff814ac780 ffff880236d67e00 ffffffff814ac88b
> 2011-10-24 19:34:40 [  318.708234] <0> ffff88022a6b88a8 ffff88022a6b88a8 ffff88022a6b8898 ffff88022a6b8898
> 2011-10-24 19:34:40 [  318.708547] Call Trace:
> 2011-10-24 19:34:40 [  318.708613]  [<ffffffff814ac4a6>] ops_exit_list+0x36/0x70
> 2011-10-24 19:34:40 [  318.708677]  [<ffffffff814ac780>] ? cleanup_net+0x0/0x1c0
> 2011-10-24 19:34:40 [  318.708741]  [<ffffffff814ac88b>] cleanup_net+0x10b/0x1c0
> 2011-10-24 19:34:40 [  318.708808]  [<ffffffff8107b2a5>] run_workqueue+0xc5/0x1a0
> 2011-10-24 19:34:40 [  318.708872]  [<ffffffff8107b423>] worker_thread+0xa3/0x110
> 2011-10-24 19:34:40 [  318.708936]  [<ffffffff810800d0>] ? autoremove_wake_function+0x0/0x40
> 2011-10-24 19:34:40 [  318.709002]  [<ffffffff8107b380>] ? worker_thread+0x0/0x110
> 2011-10-24 19:34:40 [  318.709066]  [<ffffffff8107fb56>] kthread+0x96/0xa0
> 2011-10-24 19:34:40 [  318.709131]  [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
> 2011-10-24 19:34:40 [  318.709195]  [<ffffffff8107fac0>] ? kthread+0x0/0xa0
> 2011-10-24 19:34:40 [  318.709257]  [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
> 2011-10-24 19:34:40 [  318.709320] Code: 97 48 08 00 00 85 c0 74 1e 3b 02 77 1a 48 98 48 8b 44 c2 10 48 3b 00 75 12 48 c7 c6 52 c6 8e a0 e8 8a b3 8c e0 c9 c3 0f 0b eb fe <0f> 0b eb fe 55 48 89 e5 53 48 83 ec 08 0f 1f 44 00 00 8b 05 74 
> 2011-10-24 19:34:40 [  318.711821] RIP  [<ffffffffa08eb0ac>] recent_net_exit+0x3c/0x40 [xt_recent]
> 2011-10-24 19:34:40 [  318.711924]  RSP <ffff880236d67d90>
> 2011-10-24 19:34:40 [  318.711984] ---[ end trace 20014711382a5389 ]---

Do you have also the "fixing recursive fault but reboot is needed" right
after the "end trace" ?