[dev] Memory Leak observed in Type2 EVPN processing on FRR 8.5.1

Wed Jul 16 20:07:01 UTC 2025

Hi Everyone,

We are currently testing EVPN VXLAN on SONiC 202311, which includes FRR
version 8.5.1.

As part of our testing, we're simulating EVPN VXLAN with continuous MAC
mobility. This simulates Type 2 EVPN message handling. We see the memory
usage of the BGP container increases continuously and the memory is not
returned after the test is complete.

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 66 frr 20 0 8846072
8.2g 8420 S 0.0 52.6 37:53.37 bgpd 33 frr 20 0 818176 78192 7936 S 0.0 0.5
104:45.77 zebra 73 root 20 0 121212 30580 15204 S 0.0 0.2 2:17.50 bgpcfgd
Regards,
Angu
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