Hi, We are very inconsistently seeing a VPP crash while try to access node_by_name hash, it looks like the node_by_name is getting corrupted.
The bt looks like below * Frame 01: /lib64/libvppinfra.so.20.05.1(hash_memory+0x34) [0x7f1dae34c8a4] * Frame 02: /lib64/libvppinfra.so.20.05.1(+0x23ce0) [0x7f1dae34cce0] * Frame 03: /lib64/libvppinfra.so.20.05.1(_hash_set3+0xfd) [0x7f1dae34ddfd] * Frame 04: /lib64/libvppinfra.so.20.05.1(+0x24c71) [0x7f1dae34dc71] * Frame 05: /lib64/libvlib.so.20.05.1(vlib_node_rename+0xa9) [0x7f1dae4eab49] * Frame 06: /lib64/libvnet.so.20.05.1(vnet_delete_hw_interface+0x4eb) [0x7f1daf4d7b9b] * Frame 07: /lib64/libvnet.so.20.05.1(ethernet_delete_interface+0x713) [0x7f1daf508273] * Frame 08: /lib64/libvnet.so.20.05.1(vnet_delete_loopback_interface+0x119) [0x7f1daf509d69] * Frame 09: /lib64/libvnet.so.20.05.1(+0xf7d2b4) [0x7f1daf4e42b4] * Frame 10: /lib64/libvlibmemory.so.20.05.1(vl_msg_api_socket_handler+0x11c) [0x7f1dafd9401c] * Frame 11: /lib64/libvlibmemory.so.20.05.1(vl_socket_process_api_msg+0x18) [0x7f1dafd819b8] * Frame 12: /lib64/libvlibmemory.so.20.05.1(+0x14241) [0x7f1dafd86241] * Frame 13: /lib64/libvlib.so.20.05.1(+0x111c27) [0x7f1dae4e8c27] * Frame 14: /lib64/libvppinfra.so.20.05.1(+0x296f4) [0x7f1dae3526f4] >From our custom plugin codes we are not trying to modify this hash, all we use >is "vlib_get_node_by_name()" function. All node registration will happen during initialization. Only loopback interface can be added/deleted dynamically, for which we use standard VAPI functions which internally calls register_node() and in case of loopback delete it calls vlib_node_rename(). Can you someone give any clue when this "node_by_name" hash may get corrupted ? Regards, Sontu
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