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Cisco Bug: CSCul01628 - MCP: CPUHOG on Remote PRE! Proc: "CR10K HA chkpt entity"

Last Modified

Jan 31, 2017

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases

15.3(3)S

Description (partial)

Symptom:
When standby SUP booting up, CPU HOG observed on Proc: "CR10K HA chkpt entity"
HOG traceback decode:
0x4297C58C:t3_select_column_memory(0x4297c2b0)+0x2dc
0x4297A510:c10k_ttcm_write(0x42979f98)+0x578
0x42958014:c10k_tt_direct_write_mac(0x42957d30)+0x2e4
0x4296BD38:cr10k_mfib_update_reg_midb_event(0x4296b828)+0x510
0x4296C0E0:cr10k_mfib_update_midb_event(0x4296be78)+0x268
0x4296C6B8:cr10k_mfib_update_sh_midb(0x4296c600)+0xb8
0x42969BFC:c10k_mfib_midb_update(0x42969af0)+0x10c
0x4296A9C0:cr10k_force_midb_update(0x4296a8dc)+0xe4
0x4296AA04:cr10k_force_midb_update_wrapper(0x4296a9dc)+0x28
0x4296142C:cr10k_mfib_table_walk(0x429612bc)+0x170
0x4296E784:cr10k_mfib_force_midb_update_cmts_v4(0x4296e5c0)+0x1c4
0x4078A558:cmts_mcast_force_midb_update(0x4078a510)+0x48
0x4078EE5C:cmts_mcast_get_statindex(0x4078e7d4)+0x688
0x4079DA0C:cmts_mcast_add_dsid_entry(0x4079cbdc)+0xe30
0x406870AC:cr10k_rp_ha_parse_mdsid(0x40686cb8)+0x3f4
0x40687938:cr10k_rp_ha_parse_sync(0x40687344)+0x5f4

Conditions:
1. Lots of multicast sessions
and 
2. do stby-PRE reboot, either initial or PRE SO.
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