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Memory gradually drops by up to 20% every 7 days Technical Level
Symptoms
  • Free memory gradually decreased on Security Gateway by up to 20% every 7 days.

  • Security Gateway needs to be rebooted about once a month to recover memory, as it does become slow when available memory decreases.

  • Memory leak detection procedure (sk35496) shows the following leaks:
    FW-1: In fw_salloc_report_leaks fw_drv_fini: N bytes allocated by 'fwmspi.c:LINE' leaked ...
    fw_drv_fini: N bytes allocated by 'fwlddist_put_kbufs' leaked at ...
    FW-1: fw_smem_stat_report: total unfreed smem allocations: X, bytes N
    FW-1: SMEM Leak in: fwmspi.c:LINE: smem bytes N ...
    FW-1: SMEM Leak in: fwlddist_put_kbufs: smem bytes N ...
    
Cause

Issue is related to VPN kernel modules $FWDIR/boot/modules/vpn*mod*.o.


Solution
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