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Security Gateway might crash in some scenarios when inspecting H.323 traffic
Symptoms
  • Security Gateway might crash in some scenarios when inspecting H.323 traffic.

  • The following function stack might appear on the console during the crash and in vmcore dump file:

    EIP: [<...>] cpas_tcp_write+... [fw_<N>] SS:ESP ...:...
    Stack traceback for pid ...
    0x... ... 0x... *fw_worker_0
    esp eip Function (args)
    0x... 0x... [fw_<N>]cpas_tcp_write+... (...)
    0x... 0x... [fw_<N>]cpas_write+... (...)
    0x... 0x... [fw_<N>]fwh323_cpas_write+... (...)
    0x... 0x... [fw_<N>]fwh225_cpas_analyze_msg+... (...)
    0x... 0x... [fw_<N>]fwh323_cpas_read_handler+... (...)
    0x... 0x... [fw_<N>]cpas_mloop+... (...)
    0x... 0x... [fw_<N>]tcp_input+... (...)
    0x... 0x... [fw_<N>]cpas_pkt_h+... (...)
    0x... 0x... [fw_<N>]cpas_glue_pkt_h_in+... (...)
    0x... 0x... [fw_<N>]fwchain_do_ex+... (...)
    0x... 0x... [fw_<N>]fw_filter_ip+... (...)
    0x... 0x... [fw_<N>]fw_filter_locked+... (...)
    0x... 0x... [fw_<N>]fwmultik_process_packet_kernel+... (...)
    0x... 0x... [fw_<N>]fwmultik_process_entry+... (...)
    0x... 0x... [fw_<N>]fwmultik_queue_async_dequeue_cb+... (...)
    0x... 0x... [fw_<N>]kernel_thread_run+... (...)
    0x... 0x... [fw_<N>]kiss_kthread_run+... (...)
    
Solution
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