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Cisco Bug: CSCvw03127 - Frequent sessmgr crash on acs_flush_ttl_aged_entries_from_ip_pools

Last Modified

Oct 23, 2020

Products (1)

  • Cisco PGW Packet Data Network Gateway

Known Affected Releases

21.17.1

Description (partial)

Symptom:
sessmgr crash

SW Version          : 21.17.1
Similar Crash Count : 11
Time of First Crash : 2020-Jul-20+13:09:50

Fatal Signal 11: 11
  PC: [09f6960e/X] acs_flush_ttl_aged_entries_from_ip_pools()
  Faulty address: 0x8
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=1 cpu=1 arch=X pid=4293 cpu=~27% argv0=sessmgr
  Crash time: 2020-Sep-13+10:33:28 UTC
  Recent errno: 11 Resource temporarily unavailable
  Build_number: 74081
  Stack (3480@0x0xffd36000):
    [09f6960e/X] acs_flush_ttl_aged_entries_from_ip_pools() sp=0xffd366d8
    [098029a7/X] acs_dns_periodic_timeout() sp=0xffd36748
    [05f8dbce/X] tlib_serv() sp=0xffd36798
    [05f8d813/X] tlib_tmr_tick() sp=0xffd367e8
    [05408032/X] snx_timer_service() sp=0xffd367f8
    [05405f2f/X] snx_fast_service() sp=0xffd36828
    [067f0b5a/X] sessmgr_snx_tick_callback() sp=0xffd36868
    [0ccc4ac2/X] sn_loop_run() sp=0xffd36d18
    [0c998ee5/X] main() sp=0xffd36d88

Conditions:
using dns snooping
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