Not all jumbo AVF tests are affected, first seen in geneve tests.
An example core from verify job: [0]. The same job shows dpdk plugin passes. Some AVF tests with jumbo frames fail due to CSIT-1885 (tests do not set up high enough max_mtu properly), but not by VPP crashing.
Repeated tests show the crash can happen at different [1] unrelated [2] places [3], so this may be some kind of memory corruption.

[0] https://s3-logs.fd.io/vex-yul-rot-jenkins-1/csit-vpp-perf-verify-master-2n-clx/1226/log.html.gz#s1-s1-s1-s1-s1-t1-k3-k4-k1
[1] https://s3-logs.fd.io/vex-yul-rot-jenkins-1/csit-vpp-perf-verify-master-2n-clx/1227/log.html.gz#s1-s1-s1-s1-s1-t1-k3-k4-k1
[2] https://s3-logs.fd.io/vex-yul-rot-jenkins-1/vpp-csit-verify-perf-master-ubuntu2204-x86_64-2n-clx/47/csit_parent/0/log.html.gz#s1-s1-s1-s1-s1-t1-k3-k4-k1
[3] https://s3-logs.fd.io/vex-yul-rot-jenkins-1/vpp-csit-verify-perf-master-ubuntu2204-x86_64-2n-clx/48/csit_parent/0/log.html.gz#s1-s1-s1-s1-s1-t1-k3-k4-k1