kernel-packages team mailing list archive

[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1497048

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: trusty

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1497048

Title:
  Trusty - Null pointer dereference at queue_userspace_packet+0x1f/0x2d0
  [openvswitch]

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  A user has reported to us the following crash stack trace.

  _________________________________________________________________________________________
  [415165.417433] BUG: unable to handle kernel NULL pointer dereference at 00000000000000a3
  [415165.417759] IP: [<ffffffffa015e24f>] queue_userspace_packet+0x1f/0x2d0 [openvswitch]
  [415165.418073] PGD 0 
  [415165.418161] Oops: 0000 [#1] SMP 
  [415165.418299] Modules linked in: l2tp_eth l2tp_netlink l2tp_core vhost_net vhost macvtap macvlan xt_conntrack ipt_REJECT dccp_diag dccp tcp_diag udp_diag inet_diag unix_diag veth xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp ip6table_filter ip6_tables iptable_filter ip_tables x_tables nbd ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi openvswitch gre vxlan ip_tunnel dm_crypt gpio_ich dm_multipath bridge scsi_dh stp llc intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel joydev kvm shpchp sb_edac ipmi_si edac_core acpi_power_meter lpc_ich mac_hid xfs btrfs xor raid6_pq libcrc32c ses enclosure hid_generic crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
  [415165.421570]  aesni_intel ixgbe igb aes_x86_64 lrw dca gf128mul glue_helper ptp ablk_helper usbhid cryptd megaraid_sas pps_core hid mdio i2c_algo_bit wmi
  [415165.427942] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.13.0-53-generic #89-Ubuntu
  [415165.440183] Hardware name: Cisco Systems Inc UCSC-C240-M3S/UCSC-C240-M3S, BIOS C240M3.2.0.1a.0.042820140036 04/28/2014
  [415165.452693] task: ffff882012d01800 ti: ffff882012cfc000 task.ti: ffff882012cfc000
  [415165.465847] RIP: 0010:[<ffffffffa015e24f>]  [<ffffffffa015e24f>] queue_userspace_packet+0x1f/0x2d0 [openvswitch]
  [415165.480003] RSP: 0018:ffff88203fce3b88  EFLAGS: 00010296
  [415165.487411] RAX: 0000000000000000 RBX: ffff88203fce3ce8 RCX: ffff88203fce3ce8
  [415165.502430] RDX: 0000000000000000 RSI: 000000000000000e RDI: ffffffff81cdab00
  [415165.517448] RBP: ffff88203fce3bc8 R08: 0000000000000001 R09: 0000000000000000
  [415165.532701] R10: 0000000000410000 R11: 000000000f9365e3 R12: ffff88203fce3ce8
  [415165.548698] R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000000e
  [415165.564653] FS:  0000000000000000(0000) GS:ffff88203fce0000(0000) knlGS:0000000000000000
  [415165.580681] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [415165.588725] CR2: 00000000000000a3 CR3: 0000000001c0e000 CR4: 00000000000427e0
  [415165.604495] Stack:
  [415165.612127]  ffffffff81d1ca68 ffff881fbd6c6c00 0000000000000009 0000000000000000
  [415165.627360]  ffff88203fce3ce8 0000000000000000 000000000000000e 0000000000000000
  [415165.642642]  ffff88203fce3cb8 ffffffffa015e5a1 0000000000000010 ffffffff81cdab00
  [415165.657955] Call Trace:
  [415165.665405]  <IRQ> 
  [415165.665500] 
  [415165.672684]  [<ffffffffa015e5a1>] queue_gso_packets+0xa1/0x1f0 [openvswitch]
  [415165.680015]  [<ffffffffa015de7b>] ? ovs_execute_actions+0x2b/0x30 [openvswitch]
  [415165.694425]  [<ffffffffa01607f5>] ovs_dp_upcall+0xe5/0xf0 [openvswitch]
  [415165.701807]  [<ffffffffa016090f>] ovs_dp_process_received_packet+0x10f/0x120 [openvswitch]
  [415165.716228]  [<ffffffffa0166aca>] ovs_vport_receive+0x2a/0x30 [openvswitch]
  [415165.723591]  [<ffffffffa0167391>] netdev_frame_hook+0xc1/0x120 [openvswitch]
  [415165.730799]  [<ffffffff81626892>] __netif_receive_skb_core+0x262/0x840
  [415165.737909]  [<ffffffff81626e88>] __netif_receive_skb+0x18/0x60
  [415165.744824]  [<ffffffff81627a1e>] process_backlog+0xae/0x1a0
  [415165.751644]  [<ffffffff81627272>] net_rx_action+0x152/0x250
  [415165.758248]  [<ffffffff8106cc6c>] __do_softirq+0xec/0x2c0
  [415165.764694]  [<ffffffff8106d1b5>] irq_exit+0x105/0x110
  [415165.770968]  [<ffffffff81735c26>] do_IRQ+0x56/0xc0
  [415165.777058]  [<ffffffff8172b32d>] common_interrupt+0x6d/0x6d
  [415165.783041]  <EOI> 
  [415165.783127] 
  [415165.788840]  [<ffffffff815d523f>] ? cpuidle_enter_state+0x4f/0xc0
  [415165.794659]  [<ffffffff815d5369>] cpuidle_idle_call+0xb9/0x1f0
  [415165.800468]  [<ffffffff8101d34e>] arch_cpu_idle+0xe/0x30
  [415165.806126]  [<ffffffff810bf0a5>] cpu_startup_entry+0xc5/0x290
  [415165.811862]  [<ffffffff810414dd>] start_secondary+0x21d/0x2d0
  [415165.817479] Code: 32 74 04 48 89 71 08 5b 5d c3 66 90 66 66 66 66 90 55 48 89 e5 41 57 41 89 f7 41 56 49 89 d6 41 55 41 54 53 48 89 cb 48 83 ec 18 <f6> 82 a3 00 00 00 10 48 89 7d c8 48 c7 45 d0 00 00 00 00 0f 85 
  [415165.834611] RIP  [<ffffffffa015e24f>] queue_userspace_packet+0x1f/0x2d0 [openvswitch]
  [415165.845643]  RSP <ffff88203fce3b88>
  [415165.851171] CR2: 00000000000000a3
  _________________________________________________________________________________________

  After analysis we provided a 3.13 kernel patched with commit 1e16aa3ddf863c6b9f37eddf52503230a62dedb3 and 
  330966e501ffe282d7184fde4518d5e0c24bc7f8.  As a result the fairly consistent crash is no longer occuring.

  We attempted to push the patch through the stable process here 
  http://marc.info/?l=linux-netdev&m=143631594021618&w=2
  and again
  http://marc.info/?l=linux-netdev&m=143951671004053&w=2
  Unfortunately upstream stable has yet to accept these upstream.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1497048/+subscriptions