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Cisco Bug: CSCvt66372 - sessmgr restart at sess/mme/mme-app/app/mme_fw.c

Last Modified

May 10, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

Description (partial)

Sessmgr was asserted with below traces, 

Assertion failure at sessmgr
  Function: mme_fsm_event_handler()
  Expression: !fsm_data->mfl_in_eh
  Proclet: sessmgr (f=87000,i=327)
  Process: card=2 cpu=2 arch=X pid=10033 cpu=~4% argv0=sessmgr
  Crash time: 2020-Feb-27+09:01:57 UTC
  Recent errno: 11 Resource temporarily unavailable
  Build_number: 73090
  Stack (131071@0x0xff7cb000, probably truncated):
    [ffffe430/X] __kernel_vsyscall() sp=0xff7cbc48
    [0c9ed314/X] sn_assert() sp=0xff7cbc88
    [08b1f671/X] mme_fsm_event_handler() sp=0xff7cc148
    [08b9fa8f/X] mme_pdn_procedure_callback() sp=0xff7cc198
    [0899ed96/X] mme_end_procedure() sp=0xff7cc228

SGW sends "Delete Bearer Request" , while MME processing "PDN disconnect procedure" at mme application level,
it got aborted but the reentrant flag is set wrongly due to the abort, due to that ASSERT has happened
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