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Cisco Bug: CSCuq83743 - Sig11 : sn_csp_ctbl_get_card_oper_state() seen twice on standby

Last Modified

Feb 23, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

16.2(0) 16.4.2 17.0.0.56716 17.0.0.56900 17.1.1.58421 17.1.1.58448 18.0.0.58702 18.0.0.59427 18.1.0.59674 18.1.0.59880 19.0.M0.60144 19.0.M0.60306 19.0.M0.60331 19.0.M0.60345

Description (partial)

Symptom:
The following SNMP segmentation fault is seen infrequently:

Fatal Signal 11: Segmentation fault
  PC: [08f048f8/X] sn_csp_ctbl_get_card_oper_state()
  Faulty address: 0x18465a34
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=5 cpu=0 arch=X pid=13939 cpu=~99% argv0=snmp
  Crash time: 2014-Sep-12+08:31:13 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (10200@0xffffb000):
    [08f048f8/X] sn_csp_ctbl_get_card_oper_state() sp=0xffffbf98
    [08f04b98/X] sn_csp_ctbl_is_card_present_and_in_use() sp=0xffffbfb8
    [00b6acac/X] snmp_phy_entity_navigate_pointer_next() sp=0xffffc198
    [00b6b7f3/X] snmp_header_entity_phy_table() sp=0xffffc3d8
    [00b6b8b1/X] var_ceExtEntPhysicalTable() sp=0xffffc428
    [0ad6af24/X] netsnmp_old_api_helper() sp=0xffffcaa8
    [0ad7048c/X] netsnmp_call_handlers() sp=0xffffcaf8
    [0ad51437/X] handle_var_requests() sp=0xffffcb38
    [0ad52174/X] handle_pdu() sp=0xffffcb88
    [0ad52358/X] netsnmp_handle_request() sp=0xffffcbc8
    [0ad52cbc/X] handle_snmp_packet() sp=0xffffcc08
    [0ad092bc/X] _sess_process_packet() sp=0xffffcc68
    [0ad09e83/X] _sess_read() sp=0xffffccd8

Conditions:
Longevity test running with ~4m subs.
SNMP walks/gets happening in background periodically.
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