Hi, I am getting segmentation fault in VPP when using VCL VPPCOM_PROTO_UDP *C* socket. This issue is observed with both UDP sender and UDP receiver application.
However, both UDP sender and receiver works fine with VPPCOM_PROTO_UDP. Here is the stack trace - (gdb) bt #0 0x0000000000000000 in ?? () #1 0x00007ffff775da59 in session_open_vc (app_wrk_index=1, rmt=0x7fffb5e34cc0, opaque=0) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vnet/session/session.c:1217 #2 0x00007ffff7779257 in session_mq_connect_handler (data=0x7fffb676e7a8) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vnet/session/session_node.c:138 #3 0x00007ffff7780f48 in session_event_dispatch_ctrl (elt=0x7fffb643f51c, wrk=0x7fffb650a640) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vnet/session/session.h:262 #4 session_queue_node_fn (vm=<optimized out>, node=<optimized out>, frame=<optimized out>) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vnet/session/session_node.c:1409 #5 0x00007ffff6b214c1 in dispatch_node (last_time_stamp=<optimized out>, frame=0x0, dispatch_state=VLIB_NODE_STATE_POLLING, type=VLIB_NODE_TYPE_INPUT, node=0x7fffb5a9a980, vm=0x7ffff6d7c200 <vlib_global_main>) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vlib/main.c:1235 #6 vlib_main_or_worker_loop (is_main=1, vm=0x7ffff6d7c200 <vlib_global_main>) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vlib/main.c:1815 #7 vlib_main_loop (vm=0x7ffff6d7c200 <vlib_global_main>) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vlib/main.c:1990 #8 vlib_main (vm=<optimized out>, vm@entry=0x7ffff6d7c200 <vlib_global_main>, input=input@entry=0x7fffb5e34fa0) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vlib/main.c:2236 #9 0x00007ffff6b61756 in thread0 (arg=140737334723072) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vlib/unix/main.c:658 #10 0x00007ffff602fc0c in clib_calljmp () from /lib64/libvppinfra.so.20.05 #11 0x00007fffffffd1e0 in ?? () #12 0x00007ffff6b627ed in vlib_unix_main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/vpp-20.05-rc0~748_g83d129837.x86_64/src/vlib/unix/main.c:730 Earlier , I tested this functionality with VPP 20.01 release with the following patches and it worked perfectly. https://gerrit.fd.io/r/c/vpp/+/24332 https://gerrit.fd.io/r/c/vpp/+/24334 https://gerrit.fd.io/r/c/vpp/+/24462 Thanks, -Raj
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