[ovs-discuss] ipfix leads to kernel crash

ZHANG Zhiming zhangzhiming at yunshan.net.cn
Mon Nov 2 14:12:32 UTC 2015


Could someone help me check this kernel crash?
I set ipfix to send report to a collector, and the kernel crashed after several hours.

ovs-vsctl (Open vSwitch) 2.3.1
Compiled Aug 11 2015 05:18:30
DB Schema 7.6.2

kernel version:

crash> bt
PID: 1614   TASK: ffff8817fb7638e0  CPU: 1   COMMAND: "avahi-daemon"
 #0 [ffff8817f78c71e8] machine_kexec at ffffffff8104105b
 #1 [ffff8817f78c7248] crash_kexec at ffffffff810ceec2
 #2 [ffff8817f78c7318] oops_end at ffffffff815e9b08
 #3 [ffff8817f78c7340] die at ffffffff810162ab
 #4 [ffff8817f78c7370] do_trap at ffffffff815e91e0
 #5 [ffff8817f78c73c0] do_invalid_op at ffffffff810130d4
 #6 [ffff8817f78c7470] invalid_op at ffffffff815f2d9e
    [exception RIP: pskb_expand_head+526]
    RIP: ffffffff814c107e  RSP: ffff8817f78c7528  RFLAGS: 00010202
    RAX: 0000000000000002  RBX: ffff8817fb2e1700  RCX: 0000000000000020
    RDX: 00000000000002c0  RSI: 0000000000000000  RDI: ffff8817fb2e1700
    RBP: ffff8817f78c7560   R8: 0000000000000132   R9: 0000000000000000
    R10: 0000000000000100  R11: 0000000000000004  R12: 0000000000000000
    R13: ffff8817fb2e1700  R14: 00000000958819e2  R15: ffff8817fab82500
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #7 [ffff8817f78c7568] skb_checksum_help at ffffffff814cd85b
 #8 [ffff8817f78c7598] queue_userspace_packet at ffffffffa043cf03 [openvswitch]
 #9 [ffff8817f78c7638] ovs_dp_upcall at ffffffffa043e5a5 [openvswitch]
#10 [ffff8817f78c7650] do_execute_actions at ffffffffa043aa0e [openvswitch]
#11 [ffff8817f78c76f0] do_execute_actions at ffffffffa043aa3b [openvswitch]
#12 [ffff8817f78c7790] ovs_execute_actions at ffffffffa043b3f7 [openvswitch]
#13 [ffff8817f78c77c8] ovs_dp_process_packet_with_key at ffffffffa043e64e [openvswitch]
#14 [ffff8817f78c7838] ovs_dp_process_received_packet at ffffffffa043e794 [openvswitch]
#15 [ffff8817f78c7900] ovs_vport_receive at ffffffffa0444d7a [openvswitch]
#16 [ffff8817f78c7910] internal_dev_xmit at ffffffffa0445a4d [openvswitch]
#17 [ffff8817f78c7920] dev_hard_start_xmit at ffffffff814d10f8
#18 [ffff8817f78c7978] dev_queue_xmit at ffffffff814d1680
#19 [ffff8817f78c79c8] ip_finish_output at ffffffff8150d321
#20 [ffff8817f78c7a18] ip_mc_output at ffffffff8150e53a
#21 [ffff8817f78c7a48] ip_local_out at ffffffff8150dec5
#22 [ffff8817f78c7a60] ip_send_skb at ffffffff8150f235
#23 [ffff8817f78c7a78] udp_send_skb at ffffffff81534ea2
#24 [ffff8817f78c7ab8] udp_sendmsg at ffffffff81535e37
#25 [ffff8817f78c7bd8] inet_sendmsg at ffffffff81542074
#26 [ffff8817f78c7c08] sock_sendmsg at ffffffff814b6f30
#27 [ffff8817f78c7d70] ___sys_sendmsg at ffffffff814b7369
#28 [ffff8817f78c7f00] __sys_sendmsg at ffffffff814b8251
#29 [ffff8817f78c7f70] sys_sendmsg at ffffffff814b82a2
#30 [ffff8817f78c7f80] system_call_fastpath at ffffffff815f1659
    RIP: 00007f48906247a0  RSP: 00007fff5ee93768  RFLAGS: 00000207
    RAX: 000000000000002e  RBX: ffffffff815f1659  RCX: 00007f48912d3e20
    RDX: 0000000000000000  RSI: 00007fff5ee93fa0  RDI: 000000000000000c
    RBP: 000000000000000c   R8: 00007fff5ee93f13   R9: 0000000000000004
    R10: 0000000000000019  R11: 0000000000000246  R12: ffffffff814b82a2
    R13: ffff8817f78c7f78  R14: 000000000000000c  R15: 00007fff5ee93fa0
    ORIG_RAX: 000000000000002e  CS: 0033  SS: 002b
crash> sys
      KERNEL: /usr/lib/debug/lib/modules/3.10.0-123.el7.x86_64/vmlinux
        CPUS: 8
        DATE: Fri Oct 23 22:15:37 2015
      UPTIME: 00:00:21
LOAD AVERAGE: 1.01, 0.24, 0.08
       TASKS: 445
    NODENAME: centos131
     RELEASE: 3.10.0-123.el7.x86_64
     VERSION: #1 SMP Tue Jul 14 11:00:37 CST 2015
     MACHINE: x86_64  (2500 Mhz)
      MEMORY: 96 GB
       PANIC: "kernel BUG at net/core/skbuff.c:1060!"

ZHANG Zhiming
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