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Security Gateway with enabled HTTPS Inspection might crash during high traffic load
Symptoms
  • Security gateway crashes as a result of enabling kernel debug with ssl_insp flag (WS)
  • Function stack during the crash:

    Oops: 0000 [#X]
    ... ... ...
    EIP is at cpas_hk_poll+... [fw_X]
    ... ... ...
    Process wstlsd (pid: N, ti=... task=... task.ti=...)
    ... ... ...
    Call Trace:
    fwtls_handle_ioctl+...
    sim_filterout+...
    kiss_memory_extend_if_needed+...
    _spin_lock_bh+...
    fwdrv_ioctl+...
    _spin_unlock_bh+...
    fwmultik_gconn_lookup+...
    ... ... ...
    EIP: [...] cpas_hk_poll+... [fw_X]
    ... ... ...
    Entering kdb (current=..., pid ...) on processor X Oops: Oops
    ... ... ...
    [X]kdb> bt
    Stack traceback for pid N
    ... ... ...
    [fw_X]cpas_hk_poll+...
    [fw_X]fwtls_handle_ioctl+...
    [fw_X]fwdrv_ioctl+...
    [fw_X]fwdrv_ioctl_wrapper_do+...
    [fw_X]fwdrv_ioctl_wrapper+...
    [fw_X]cpkiomux_ioctl+...
    [fw_X]fw__ioctl+...
    ... ... ...
    Using old style backtrace, unreliable with no arguments
    ... ... ...
    [fw_X]cpas_hk_poll+...
    [fw_X]fwtls_handle_ioctl+...
    [simmod]sim_filterout
    [fw_X]kiss_memory_extend_if_needed+...
    _spin_lock_bh+...
    [fw_X]fwdrv_ioctl+...
    ... ... ...
    
Solution
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