Hi, In my UDP application , I am using VPP host stack to receive packets and memIf to transmit packets. There are a total 6 application connected to VPP. if I stop the application(s) then VPP is crashing. In vpp configuration , 4 worker threads are configured. If there is no worker thread configured then I do not see this crash. Here is the VPP task trace - (gdb) bt #0 0x00007ffff51818df in raise () from /lib64/libc.so.6 #1 0x00007ffff516bcf5 in abort () from /lib64/libc.so.6 #2 0x000055555555c123 in os_panic () at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vpp/vnet/main.c:366 #3 0x00007ffff6b466bb in vlib_worker_thread_barrier_sync_int (vm=0x7ffff6d78200 <vlib_global_main>, func_name=<optimized out>) at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vlib/threads.c:1529 #4 0x00007ffff7bc5ef0 in vl_msg_api_handler_with_vm_node (am=am@entry=0x7ffff7dd2ea0 <api_global_main>, vlib_rp=vlib_rp@entry=0x7fee7c001000, the_msg=0x7fee7c02bbd8, vm=vm@entry=0x7ffff6d78200 <vlib_global_main>, node=node@entry=0x7fffb6295000, is_private=is_private@entry=1 '\001') at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vlibapi/api_shared.c:596 #5 0x00007ffff7bb000f in void_mem_api_handle_msg_i (is_private=1 '\001', node=0x7fffb6295000, vm=0x7ffff6d78200 <vlib_global_main>, vlib_rp=0x7fee7c001000, am=0x7ffff7dd2ea0 <api_global_main>) at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vlibmemory/memory_api.c:698 #6 vl_mem_api_handle_msg_private (vm=vm@entry=0x7ffff6d78200 <vlib_global_main>, node=node@entry=0x7fffb6295000, reg_index=<optimized out>) at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vlibmemory/memory_api.c:762 #7 0x00007ffff7bbe346 in vl_api_clnt_process (vm=<optimized out>, node=0x7fffb6295000, f=<optimized out>) at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vlibmemory/vlib_api.c:370 #8 0x00007ffff6b161d6 in vlib_process_bootstrap (_a=<optimized out>) at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vlib/main.c:1502 #9 0x00007ffff602ac0c in clib_calljmp () from /lib64/libvppinfra.so.20.05 #10 0x00007fffb5e93dd0 in ?? () #11 0x00007ffff6b19821 in dispatch_process (vm=0x7ffff6d78200 <vlib_global_main>, p=0x7fffb6295000, last_time_stamp=15931923011231136, f=0x0) at /usr/src/debug/vpp-20.05-9~g0bf9c294c_dirty.x86_64/src/vppinfra/types.h:133 #12 0x7f0f660000009024 in ?? ()
Thanks, -Raj
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