Security Gateway / Active cluster member freezes / locks up randomly.
During the issue, even a console access is not responsive.
After rebooting the frozen Security Gateway / cluster member, the /var/log/messages file showed these lines for the time of the issue:
kernel: Call Trace: kernel: [<...>] :fw_0:h_hash+... kernel: [<...>] :fw_0:h_delete+... kernel: [<...>] :fw_0:ld_del_ex+... kernel: [<...>] :fw_0:ld2_get_wto_ttl_aggr+... kernel: [<...>] :fw_0:fwconn_conn6_remove_conn__legacy__+... kernel: [<...>] :fw_0:fwconn_del_compound_tree__legacy__+... kernel: [<...>] :fw_0:fwh323_cpas_free_func+... kernel: [<...>] :fw_0:cpas_end_h+... kernel: [<...>] :fw_0:cpas_glue_end_h+... kernel: [<...>] :fw_0:fwconn_freefunc+... kernel: [<...>] :fw_0:hi_deleted+... kernel: [<...>] :fw_0:h_delete_item+... kernel: [<...>] :fw_0:h_delete+... kernel: [<...>] :fw_0:ld_del_ex+... kernel: [<...>] :fw_0:fwconn_ent_eligible_for_del+... ... ... ...
kernel: Call Trace: kernel: [<...>] :fw_0:fwconn_record_conn+... kernel: [<...>] :fw_0:nrb_handle_abs_lst_free+... kernel: [<...>] :fw_0:b_get+... kernel: [<...>] :fw_0:fw_kfunc_record_conn+... kernel: [<...>] :fw_0:fw_runfilter_ex+... kernel: [<...>] :fw_0:fwconn_chain_get_kbuf_buf+... kernel: [<...>] :fw_0:fwx_key_get_client_conn_key+... kernel: [<...>] :fw_0:fwx_get_original_conn_key_ex+... kernel: [<...>] :fw_0:vm_exec_filter+... kernel: [<...>] :fw_0:fw_handle_first_packet+... kernel: [<...>] :fw_0:b_get+... kernel: [<...>] :fw_0:sd_resolve_attr_value+... kernel: [<...>] :fw_0:fw_filter_chain+... ... ...