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Security Gateway might crash rarely when inspecting URLs
Symptoms
  • Security Gateway / Active cluster member might crash rarely when one of the following blades is enabled: IPS, URL Filtering, Application Control, Anti-Bot.

  • VMCORE dump file (see sk44186) contains the following stack:

    crash> bt 
     #0 [...] crash_kexec at ...
     #1 [...] kdb_main_loop at ...
     #2 [...] kdb_save_running at ...
     #3 [...] kdba_main_loop at ...
     #4 [...] kdb at ...
     #5 [...] die at ...
     #6 [...] do_page_fault at ...
     #7 [...] error_code (via page_fault) at ...
     #8 [...] [fw_1] psl_get_cdir(streamh=NULL) at psl.c
     #9 [...] [fw_1] ws_passive_primitives_cb(...) at ws_connection_passive.c:
    #10 [...] [fw_1] ws_http_session_set_barrier(...) at ws_session.c
    #11 [...] [fw_1] ws_http_session_perform_hold_ex(...) at ws_session.c:
    #12 [...] [fw_1] ws_module_perform_hold__legacy__(...) at ws_module.c
    #13 [...] [fw_1] appi_transaction_handle_async_rb_match(...) at appi_transaction.c
    #14 [...] [fw_1] appi_transaction_http_process_rb_match_result(...) at appi_transaction_http.c
    #15 [...] [fw_1] appi_transaction_exe_rulebase(...) at appi_transaction.c
    #16 [...] [fw_1] appi_transaction_http_app_found_event(...) at appi_transaction_http.c
    ... ... ...
    crash>
    
Solution
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