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++ Lina running on low memory mostly used by global shared pool: Free memory: 504180750 bytes ( 4%) Used memory: 12172147104 bytes (96%) ------------- ------------------ Total memory: 12676327854 bytes (100%) ------------------ show memory detail ------------------ Heap Memory: Free Memory: Heapcache Pool: 162834992 bytes ( 1% ) Global Shared Pool: 214358560 bytes ( 2% ) Message Layer Pool: 14237824 bytes ( 0% ) Message Layer HB Pool: 198928 bytes ( 0% ) System: 169322926 bytes ( 1% ) Used Memory: Heapcache Pool: 1984648656 bytes ( 16% ) Global Shared Pool: 8238978528 bytes ( 65% ) <--- Reserved (Size of DMA Pool): 1073741824 bytes ( 8% ) Reserved for messaging: 2277248 bytes ( 0% ) Reserved for HB messaging: 63216 bytes ( 0% ) MMAP usage: 70969522 bytes ( 1% ) System Overhead: 744957774 bytes ( 6% ) ------------------------------------- ---------------- Total Memory: 12676327854 bytes ( 100% ) ++ Console: 22024-01-15 09:06:33 1/15/2024 9:6:32 [error] ccs_chmclient - Mem allocation failed, no more memory. 2024-01-15 09:06:33 1/15/2024 9:6:32 [error] ccs_clnt_mgr - Failed to send hw notification 2024-01-15 09:06:34 lina_io_open "/tmp/ssp_ntpd/.ssptime2asa.pipe": ERROR - failed IO device allocation 2024-01-15 09:06:34 lina_io_open "/tmp/ssp_tz/.ssptz2asa.pipe": ERROR - failed IO device allocation 2024-01-15 09:06:38 1/15/2024 9:6:37 [error] ccs_chmclient - Mem allocation failed, no more memory. 2024-01-15 09:06:38 1/15/2024 9:6:37 [error] ccs_clnt_mgr - Failed to send hw notification
Reported on FP4110 with FTD 7.2.4 The issue is triggered by a failover.
Disable dnscrypt https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/720/management-center-device-config-72/access-dns.html
The problem appears to be instigated by triggering failover. Certain information from the umbrella flow is not being efficiently replicated to the standby unit. Consequently, the "dnscrypt key cache" associated with that umbrella flow is not being released as it should be. Resulting to potential Memory leak situation.
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