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Sir,

uname -r

3.10.0-123.13.2.el7.x86_64

I have stopped iptables services since the start. So, should I still 
follow what they have mentioned in the 5th comment?

Thanks,

Priyanka


On Tuesday 02 June 2015 11:49 AM, Matt Taylor wrote:
> Hi Priyanka,
>
> Are you using an old kernel ('uname -r' please)? I've seen issues with 
> unlink_anon_vmas in Fedora, so this is rather interesting.
>
> In regards to the 2nd kernel panic, it indicates that it's due to 
> iptables and get_counters.
>
> It's possibly related to this:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1089569
>
> Might be worth trying what was mentioned in the 5th comment.
>
> Regards,
> Matt.
>
> On 2/06/2015 15:14, Priyanka wrote:
>> Hi,
>>
>> I have an Openstack Juno setup with one controller node and 3 compute
>> nodes. I installed it using packstack on centOS 7. One of the compute
>> node crashed twice. First crash was two days back and second one today.
>> It automatically restarts after the crash. The crash log in /var/crash
>> were different in both the instances.
>>
>> Crash 1 log:
>>
>> |CPU:  5  PID:  16617  Comm:  pickupNot 
>> tainted3.10.0-123.13.2.el7.x86_64#1
>> [11971.208387]  Hardware  name:  Intel  Corporation S2600CP/S2600CP,  
>> BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
>> [11971.208389]   ffff8807de2b1cc800000000a2deb902 ffff8807de2b1c80 
>> ffffffff815e232c
>> [11971.208392]   ffff8807de2b1cb8 ffffffff8105dee1 ffff8807f8e85f50 
>> ffff8807f8e85f40
>> [11971.208394]   ffff8807f90db0c0 ffff8807f8e85f50 ffff8807f90db0c0 
>> ffff8807de2b1d20
>> [11971.208396]  Call  Trace:
>> [11971.208401]   [<ffffffff815e232c>] dump_stack+0x19/0x1b
>> [11971.208405]   [<ffffffff8105dee1>] warn_slowpath_common+0x61/0x80
>> [11971.208408]   [<ffffffff8105df5c>] warn_slowpath_fmt+0x5c/0x80
>> [11971.208410]   [<ffffffff812cff82>] __list_del_entry+0x82/0xd0
>> [11971.208412]   [<ffffffff812cffdd>]  list_del+0xd/0x30
>> [11971.208415]   [<ffffffff811776a3>] unlink_anon_vmas+0x93/0x180
>> [11971.208418]   [<ffffffff81168b88>] free_pgtables+0xa8/0x120
>> [11971.208420]   [<ffffffff81173556>] exit_mmap+0xc6/0x1a0
>> [11971.208422]   [<ffffffff8105b187>]  mmput+0x67/0xf0
>> [11971.208424]   [<ffffffff81063dac>]  do_exit+0x28c/0xa60
>> [11971.208426]   [<ffffffff810645ff>] do_group_exit+0x3f/0xa0
>> [11971.208428]   [<ffffffff81064674>] SyS_exit_group+0x14/0x20
>> [11971.208431]   [<ffffffff815f2a19>] system_call_fastpath+0x16/0x1b
>> [11971.208432]  ---[  end  trace ebed116bce4ce8eb]---
>> [11971.208437]  BUG:  unable to handle kernel NULL pointer 
>> dereference at(null)
>> [11971.208471]  IP:  [<ffffffff81177663>] unlink_anon_vmas+0x53/0x180
>> [11971.208493]  PGD0
>> [11971.208502]  Oops:  0000  [#1] SMP|
>>
>> Crash 2 log:
>>
>> |[321808.123092]  BUG:  unable to handle kernel paging request at 
>> ffffc90017456008
>> [321808.123122]  IP:  [<ffffffffa03a8521>] get_counters+0x91/0xd0  
>> [ip_tables]
>> [321808.123146]  PGD81d437067  PUD81d4a4067  PMD7ec309067  PTE0
>> [321808.123167]  Oops:  0002  [#1] SMP
>> [321808.123179]  Modules  linkedin:  dummy vhost_net macvtap macvlan 
>> tun iptable_nat nf_nat_ipv4 nf_nat iptable_raw iptable_filter 
>> ip_tables nf_conntrack_ipv6 nf_defrag_ipv6 xt_mac xt_physdev xt_set 
>> ip_set_hash_ip ip_set nfnetlink veth ip6table_filter ip6_tables 
>> ebtable_nat ebtables openvswitch vxlan ip_tunnel gre sg ipt_REJECT 
>> xt_comment xt_conntrack xt_multiport nf_conntrack_ipv4 nf_defrag_ipv4 
>> nf_conntrack coretemp kvm_intel kvm crct10dif_pclmul iTCO_wdt 
>> iTCO_vendor_support crc32_pclmul crc32c_intel ghash_clmulni_intel 
>> sb_edac edac_core pcspkr lpc_ich ioatdma i2c_i801 mfd_core 
>> aesni_intel lrw gf128mul glue_helper ablk_helper cryptd mei_me mei 
>> shpchp wmi acpi_cpufreq mperf nfsd auth_rpcgss nfs_acl lockd sunrpc 
>> bridge stp llc xfs libcrc32c sd_mod crc_t10di
>>   f crct10d
>>
>> if_common mgag200 syscopyarea sysfillrect
>> [321808.123452]   sysimgblt drm_kms_helper ttm isci igb ahci drm 
>> libsas libahci ptp scsi_transport_sas pps_core dca libata 
>> i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod[last  
>> unloaded:  ip_tables]
>> [321808.123521]  CPU:  10  PID:  110268  Comm: iptables-saveNot  
>> tainted3.10.0-123.13.2.el7.x86_64#1
>> [321808.123547]  Hardware  name:  Intel  Corporation 
>> S2600CP/S2600CP,  BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
>> [321808.123577]  task:  ffff88080a8f38e0 ti:  ffff8807ed398000 
>> task.ti:  ffff8807ed398000
>> [321808.123599]  RIP:  0010:[<ffffffffa03a8521>] 
>> [<ffffffffa03a8521>]  get_counters+0x91/0xd0  [ip_tables]
>> [321808.123627]  RSP:  0018:ffff8807ed399da8  EFLAGS:  00010286
>> [321808.123643]  RAX:  ffffc90014ab72e8 RBX:  0000000000010380 RCX:  
>> ffffc90017456000
>> [321808.123664]  RDX:  0000000000000054  RSI:  0000000000000000 RDI:  
>> ffff88081e290380
>> [321808.123685]  RBP:  ffff8807ed399dc8 R08:  0000000000000101 R09:  
>> ffff8807ed96caa0
>> [321808.123706]  R10:  0000000000000000  R11:  ffffffff8117b2e8 R12:  
>> ffffffff819e4aa0
>> [321808.123727]  R13:  ffff8807ed96c800 R14:  ffffc90017455000 R15:  
>> ffff88080c961ba0
>> [321808.123748]  FS:   00007fdcc2078740(0000) 
>> GS:ffff88081d940000(0000)  knlGS:0000000000000000
>> [321808.123772]  CS:   0010  DS:  0000  ES:  0000  CR0: 0000000080050033
>> ||[321808.123789] CR2: ffffc90017456008 CR3: 00000007ec30e000 CR4: 
>> 00000000001427e0
>> [321808.123810] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 
>> 0000000000000000
>> [321808.123831] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 
>> 0000000000000400
>> |
>>
>> I am not able to debug the problem. The setup was working fine till now.
>> I am unable to understand what is cuasing such a behaviour. Please help.
>>
>>
>> Thanks,
>>
>> Priyanka
>>
>>
>>
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