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Cisco Bug: CSCus29873 - Active RP Crash on EoGRE Session Scale

Last Modified

Aug 15, 2017

Products (16)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
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Known Affected Releases

15.5(2)S

Description (partial)

Symptom:
Active RP crashed during the session scale test of secure and open subscriber on EoGRE tunnel interface

Conditions:
The issue seems to be happenning because of addition and deletion of static routes   
happenning in the same process context.
This happens when there are duplicate static routes added by both IPSUB and          
DHCP-process.The following crash is seen in the IP-STATIC Process context when       
timer triggers the deletion of the DHCP sessions.

UNIX-EXT-SIGNAL: Segmentation fault(11), Process = static
-Traceback= 1#a63a0ff64bc70c93327f669c236625f0  :7FE136AC6000+853E6E7                
:7FE136AC6000+853E2D4 :7FE136AC6000+853C3F3 :7FE136AC6000+853BCEC                   
:7FE136AC6000+853BC4D 

Below are the crash-decodes :-

%  0x7f7cc073b468 : __be_ipstatic_dlink_link + 40 (self)
%  0x7f7cc07463e1 : __be_ip_static_update_dupkey_sre + 401 (self)
%  0x7f7cc0745cec : __be_ipstatic_process_workq + 124 (self)
%  0x7f7cc0745c4d : __be_ip_static_route + 573 (self)
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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