This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1703401 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/1703401 Title: NULL pointer dereference triggered by openvswitch autopkg testcase Status in linux package in Ubuntu: Incomplete Bug description: Trusty kernel 3.13.0-124.173, current on -proposed, has a regression introduced by the patches for bug#1690094. This is causing the openvswitch autopkgtest testcase to hang: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/amd64/o/openvswitch/20170710_093748_a5f0a@/log.gz because of the following kernel bug: ====================================================================== [ 16.371056] random: nonblocking pool is initialized [ 22.187846] gre: GRE over IPv4 demultiplexor driver [ 22.190604] openvswitch: Open vSwitch switching datapath [ 27.919352] gre: GRE over IPv4 demultiplexor driver [ 27.920959] openvswitch: Open vSwitch switching datapath [ 28.230062] IPv6: ADDRCONF(NETDEV_UP): s1-eth1: link is not ready [ 28.255859] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth1: link becomes ready [ 28.294253] IPv6: ADDRCONF(NETDEV_UP): s1-eth2: link is not ready [ 28.310647] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth2: link becomes ready [ 28.341512] IPv6: ADDRCONF(NETDEV_UP): s1-eth3: link is not ready [ 28.358174] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth3: link becomes ready [ 28.386774] IPv6: ADDRCONF(NETDEV_UP): s1-eth4: link is not ready [ 28.402249] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth4: link becomes ready [ 28.431979] IPv6: ADDRCONF(NETDEV_UP): s1-eth5: link is not ready [ 28.446848] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth5: link becomes ready [ 28.482404] IPv6: ADDRCONF(NETDEV_UP): s1-eth6: link is not ready [ 28.498450] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth6: link becomes ready [ 28.530356] IPv6: ADDRCONF(NETDEV_UP): s1-eth7: link is not ready [ 28.546206] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth7: link becomes ready [ 28.578384] IPv6: ADDRCONF(NETDEV_UP): s2-eth1: link is not ready [ 28.594164] IPv6: ADDRCONF(NETDEV_CHANGE): s2-eth1: link becomes ready [ 28.623885] IPv6: ADDRCONF(NETDEV_UP): s2-eth2: link is not ready [ 28.642570] IPv6: ADDRCONF(NETDEV_CHANGE): s2-eth2: link becomes ready [ 28.669156] IPv6: ADDRCONF(NETDEV_UP): s2-eth3: link is not ready [ 28.683255] IPv6: ADDRCONF(NETDEV_CHANGE): s2-eth3: link becomes ready [ 28.716490] IPv6: ADDRCONF(NETDEV_UP): s2-eth4: link is not ready [ 28.734239] IPv6: ADDRCONF(NETDEV_CHANGE): s2-eth4: link becomes ready [ 28.763779] IPv6: ADDRCONF(NETDEV_UP): s2-eth5: link is not ready [ 28.782221] IPv6: ADDRCONF(NETDEV_CHANGE): s2-eth5: link becomes ready [ 28.810559] IPv6: ADDRCONF(NETDEV_UP): s2-eth6: link is not ready [ 28.826181] IPv6: ADDRCONF(NETDEV_CHANGE): s2-eth6: link becomes ready [ 28.856232] IPv6: ADDRCONF(NETDEV_UP): s2-eth7: link is not ready [ 28.875082] IPv6: ADDRCONF(NETDEV_CHANGE): s2-eth7: link becomes ready [ 28.901120] IPv6: ADDRCONF(NETDEV_UP): s1-eth8: link is not ready [ 28.909372] IPv6: ADDRCONF(NETDEV_CHANGE): s1-eth8: link becomes ready [ 28.986164] device ovs-system entered promiscuous mode [ 29.001788] device s1 entered promiscuous mode [ 29.021015] BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 [ 29.021600] IP: [<ffffffff8163f61b>] if_nlmsg_size+0xfb/0x240 [ 29.021990] PGD 3bfec067 PUD 36c7e067 PMD 0 [ 29.022303] Oops: 0000 [#1] SMP [ 29.022540] Modules linked in: veth openvswitch gre vxlan ip_tunnel libcrc32c 9p ppdev kvm_intel kvm 9pnet_virtio serio_raw 9pnet parport_pc parport i2c_piix4 mac_hid psmouse floppy pata_acpi [last unloaded:] [ 29.023992] CPU: 0 PID: 2255 Comm: ovs-vswitchd Not tainted 3.13.0-124-generic #173-Ubuntu [ 29.024012] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [ 29.024012] task: ffff88003d5f1800 ti: ffff880036c7c000 task.ti: ffff880036c7c000 [ 29.024012] RIP: 0010:[<ffffffff8163f61b>] [<ffffffff8163f61b>] if_nlmsg_size+0xfb/0x240 [ 29.024012] RSP: 0018:ffff880036c7d850 EFLAGS: 00010286 [ 29.024012] RAX: ffff88003bb41000 RBX: ffff88003ac9b000 RCX: 00000000000000d0 [ 29.024012] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88003ac9b000 [ 29.024012] RBP: ffff880036c7d888 R08: 0000000000000000 R09: 0000000000000000 [ 29.024012] R10: 00000000000044ed R11: 006d65747379732d R12: 0000000000000344 [ 29.024012] R13: 0000000000000000 R14: ffffffffa011c000 R15: 0000000000000014 [ 29.024012] FS: 00007f2a595e3980(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000 [ 29.024012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.024012] CR2: 00000000000000a8 CR3: 000000003d5ff000 CR4: 00000000000006f0 [ 29.024012] Stack: [ 29.024012] ffff88003bb41000 0000000000000000 00000000000000d0 0000000000000010 [ 29.024012] ffffffff81cdaf00 0000000000000000 ffff88003ac9b000 ffff880036c7d8d8 [ 29.024012] ffffffff81642f82 735f7265776f6cfa ff00316874652d31 ffff88003ac9b000 [ 29.024012] Call Trace: [ 29.024012] [<ffffffff81642f82>] rtmsg_ifinfo_build_skb+0x32/0xe0 [ 29.024012] [<ffffffff81643046>] rtmsg_ifinfo+0x16/0x50 [ 29.024012] [<ffffffff816430b9>] rtnetlink_event+0x39/0x40 [ 29.024012] [<ffffffff81739f1c>] notifier_call_chain+0x4c/0x70 [ 29.024012] [<ffffffff81093566>] raw_notifier_call_chain+0x16/0x20 [ 29.024012] [<ffffffff8162b085>] call_netdevice_notifiers_info+0x35/0x60 [ 29.024012] [<ffffffff81631f1b>] __netdev_upper_dev_link+0x3fb/0x4a0 [ 29.024012] [<ffffffff81631ff5>] netdev_master_upper_dev_link+0x15/0x20 [ 29.024012] [<ffffffffa015557c>] netdev_create+0xdc/0x170 [openvswitch] [ 29.024012] [<ffffffffa015482a>] ovs_vport_add+0x4a/0xd0 [openvswitch] [ 29.024012] [<ffffffffa014c222>] new_vport+0x12/0x50 [openvswitch] [ 29.024012] [<ffffffffa014ec6a>] ovs_vport_cmd_new+0x12a/0x220 [openvswitch] [ 29.024012] [<ffffffff8165f79d>] genl_family_rcv_msg+0x18d/0x370 [ 29.024012] [<ffffffff8165f980>] ? genl_family_rcv_msg+0x370/0x370 [ 29.024012] [<ffffffff8165fa11>] genl_rcv_msg+0x91/0xd0 [ 29.024012] [<ffffffff8165dab9>] netlink_rcv_skb+0xa9/0xc0 [ 29.024012] [<ffffffff8165dfb8>] genl_rcv+0x28/0x40 [ 29.024012] [<ffffffff8165d1aa>] netlink_unicast+0xda/0x1b0 [ 29.024012] [<ffffffff8165d58e>] netlink_sendmsg+0x30e/0x680 [ 29.024012] [<ffffffff8165a2b4>] ? netlink_rcv_wake+0x44/0x60 [ 29.024012] [<ffffffff8165b367>] ? netlink_recvmsg+0x1c7/0x3c0 [ 29.024012] [<ffffffff8161659b>] sock_sendmsg+0x8b/0xc0 [ 29.024012] [<ffffffff81632d38>] ? __netdev_update_features+0x18/0x380 [ 29.024012] [<ffffffff81634357>] ? ethtool_get_value+0x37/0x60 [ 29.024012] [<ffffffff816362ca>] ? dev_ethtool+0xd5a/0x1c80 [ 29.024012] [<ffffffff816169a9>] ___sys_sendmsg+0x389/0x3a0 [ 29.024012] [<ffffffff8163e4ce>] ? rtnl_unlock+0xe/0x10 [ 29.024012] [<ffffffff81645b0e>] ? dev_ioctl+0x1ce/0x590 [ 29.024012] [<ffffffff8165be43>] ? netlink_table_ungrab+0x33/0x40 [ 29.024012] [<ffffffff8165c755>] ? netlink_insert+0x145/0x240 [ 29.024012] [<ffffffff81613995>] ? sock_do_ioctl+0x45/0x50 [ 29.024012] [<ffffffff81613ec0>] ? sock_ioctl+0x1f0/0x2c0 [ 29.024012] [<ffffffff81617792>] __sys_sendmsg+0x42/0x80 [ 29.024012] [<ffffffff816177e2>] SyS_sendmsg+0x12/0x20 [ 29.024012] [<ffffffff8173e35d>] system_call_fastpath+0x1a/0x1f [ 29.024012] Code: c0 74 10 48 89 df ff d0 83 c0 07 83 e0 fc 48 98 49 01 c7 48 89 df e8 45 b5 fe ff 48 85 c0 0f 84 e9 00 00 00 48 8b 90 08 07 00 00 <48> 8b 8a a8 00 00 00 31 d2 48 85 c9 74 0c 48 89 de 48 89 c [ 29.024012] RIP [<ffffffff8163f61b>] if_nlmsg_size+0xfb/0x240 [ 29.024012] RSP <ffff880036c7d850> [ 29.024012] CR2: 00000000000000a8 [ 29.046589] ---[ end trace 19b0345dcdf6940a ]--- ====================================================================== To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1703401/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp