Hi experts,
We are seeing a crash on our setup, below is the call stack. We have not
seen this call stack earlier.
The crash is seen when the packet is enqueued to thread.
Does anyone know why we are hitting the ipsec_handoff() flow though we
have only one worker in the cluster?
vpp# show threads
ID Name Type LWP Sched Policy (Priority)
lcore Core Socket %CPU
0 vpp_main 88 other (0) 1
0 0 0
1 vpp_wk_0 workers 95 other (0) 2
0 0 0
vpp#
Crash backtrace
===========
Thread 3 "vpp_wk_0" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f4cce9fe640 (LWP 96)]
vlib_get_frame_queue_elt (index=32592, frame_queue_index=<optimized out>)
at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/threads.h:560
560 new_tail = clib_atomic_add_fetch (&fq->tail, 1);
(gdb) bt
#0 vlib_get_frame_queue_elt (index=32592, frame_queue_index=<optimized
out>) at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/threads.h:560
#1 vlib_get_worker_handoff_queue_elt
(handoff_queue_elt_by_worker_index=0x7f50bee27fb0, vlib_worker_index=32592,
frame_queue_index=<optimized out>)
at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/threads.h:621
#2 vlib_buffer_enqueue_to_thread_an (drops=0x0, drop_on_congestion=1,
n_packets=1, thread_indices=0x7f50c54c8c40, buffer_indices=0x7f50bdc35390,
frame_queue_index=<optimized out>,
vm=0x7f50c54ca540) at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/buffer_node.h:539
#3 vlib_buffer_enqueue_to_thread (drop_on_congestion=1, n_packets=1,
thread_indices=0x7f50c54c8c40, buffer_indices=<optimized out>,
frame_queue_index=<optimized out>, vm=0x7f50c54ca540)
at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/buffer_node.h:607
#4 ipsec_handoff (is_enc=true, fq_index=<optimized out>,
frame=0x7f50bdc35380, node=0x7f50c5718680, vm=<optimized out>)
at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vnet/ipsec/ipsec_handoff.c:174
#5 esp4_encrypt_tun_handoff_fn_skx (vm=<optimized out>,
node=0x7f50c5718680, from_frame=0x7f50bdc35380) at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vnet/ipsec/ipsec_handoff.c:209
#6 0x00007f50fda3db49 in dispatch_node (last_time_stamp=<optimized out>,
frame=0x7f50bdc35380, dispatch_state=VLIB_NODE_STATE_POLLING,
type=VLIB_NODE_TYPE_INTERNAL, node=0x7f50c5718680,
vm=0x7f50c54ca540) at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/main.c:1271
#7 dispatch_pending_node (vm=vm@entry=0x7f50c54ca540,
pending_frame_index=pending_frame_index@entry=16,
last_time_stamp=<optimized out>)
at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/main.c:1460
#8 0x00007f50fda3f51f in vlib_main_or_worker_loop (is_main=0,
vm=0x7f50c54ca540) at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/main.c:2016
#9 vlib_worker_loop (vm=0x7f50c54ca540) at
/usr/src/debug/vpp-20.05.1-2~g54d3cdad5_dirty.x86_64/src/vlib/main.c:2150
#10 0x00007f50fd927470 in clib_calljmp () from /lib64/libvppinfra.so.20.05.1
#11 0x00007f4cce9fdc80 in ?? ()
#12 0x00007f50b94deac1 in eal_thread_loop.cold () from
/usr/lib/vpp_plugins/dpdk_plugin.so
#13 0x0000000000000000 in ?? ()
(gdb)
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