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Security Gateway might crash when available memory is low
Symptoms
  • Security Gateway might crash when available memory is low.

  • Security Gateway might crash when running 'fw ctl failmem PERCENTAGE_of_ALLOCATIONS_to_FAIL' command per sk100766, which simulates problems with memory.

  • vmcore dump file / KDB mode shows the following function stacks:

    • Function (args) 
      strncpy+...
      malware_res_rep_match_dns_enf_cb+...
      malware_res_rep_rad_process_response_ex+...
      malware_res_rep_rad_process_response+...
      malware_res_rep_rad_query+...
      malware_res_rep_classify_ex+...
      malware_res_rep_dns_http_classify+...
      malware_res_rep_match_dns+...
      malware_res_rep_cmi_match_cb+...
      cmik_loader_fw_context_match_cb+...
      cmi_execute_ex+...
      ... ... ...
      
    • Function (args) 
      strncpy+...
      halloc+...
      malware_res_rep_rad_process_response_ex+...
      malware_res_rep_match_dns_enf_cb
      rad_abs_cache_get_resource_by_service+...
      malware_res_rep_rad_process_response+...
      malware_res_rep_rad_query+...
      fw_failmem_decide+...
      ld_ex_refresh+...
      ... ... ...
      
    • Function (args) 
      appi_session_expiration_handler+...
      appi_session_ghtab_expire_func+...
      kiss_htab_do_expire_one+...
      kiss_htab_expire_table+...
      kiss_htab_expire+...
      fw_filter_ip+...
      fw_filter_locked+...
      fwmultik_process_packet_kernel+...
      ... ... ...
      
    • Function (args) 
      appi_session_expiration_handler+...
      kiss_htab_del_internal+...
      appi_session_ghtab_expire_func+...
      kiss_htab_do_expire_one+...
      kiss_htab_expire_table+...
      kiss_htab_expire+...
      fw_filter_ip+...
      ... ... ...
      
    • Function (args) 
      [simmod]drv_write_lock+...
      [simmod]sim_db_get_conn+...
      [simmod]handle_inbound_packet+...
      [simmod]sim_fromlinux+...
      netif_receive_skb_do+...
      netif_receive_skb+...
      ... ... ...
      
    • Function (args) 
      do_routing()...
      handle_inbound_packet()
      sim_fromlinux()
      netif_receive_skb_do()
      netif_receive_skb()
      ... ... ...
      
Solution
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