Do you have the DPDK plugin loaded? It looks like “no”.
If not, it’s likely because the buffer allocator used when DPDK is not loaded
is not yet thread-safe. I’ve done some early work on this but it’s not going to
make it into the open for a while.
For now, don’t enable worker threads if DPDK plugin isn’t loaded.
Chris.
From: <vpp-dev-boun...@lists.fd.io> on behalf of Sreejith Surendran Nair
<sreejith.surendrann...@linaro.org>
Date: Wednesday, June 21, 2017 at 02:33
To: vpp-dev <vpp-dev@lists.fd.io>
Subject: [vpp-dev] Help regarding af_packet worker thread assertion
Hi All,
This regarding running worker threads with af_packet interface on VM ubuntu
16.10.
I have tried configuring the af_packet interface with cpu worker thread support
but I am getting assertion fail not sure if it is due to worker thread getting
scheduled on core 0.
Config :
-----------
startup config:
cpu {
workers 1
}
DBGvpp# sh threads
ID Name Type LWP Sched Policy (Priority) lcore
Core Socket State
0 vpp_main 23372 other (0) 0
0 0
1 vpp_wk_0 workers 23376 other (0) 1
1 0
2 stats 23377 other (0) 0
0 0
DBGvpp# create host-interface name enp0s9 hw-addr 08:00:27:06:00:de
host-enp0s9
DBGvpp# sh int
Name Idx State Counter
Count
host-enp0s9 1 down
local0 0 down
DBGvpp# set int ip address host-enp0s9 192.168.56.104/24
DBGvpp# set int state host-enp0s9 up
GDB:
---------
1:
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/buffer_funcs.h:224
(vlib_buffer_set_known_state) assertion `vlib_get_thread_index () == 0' fails
Failed to save post-mortem API trace to /tmp/api_post_mortem.23372
Thread 2 "vpp_wk_0" received signal SIGABRT, Aborted.
[Switching to Thread 0x7fff93493700 (LWP 23376)]
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
58 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb)
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58
#1 0x00007ffff5e203ea in __GI_abort () at abort.c:89
#2 0x000055555555c29c in os_panic () at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vpp/vnet/main.c:263
#3 0x00007ffff6601959 in debugger () at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vppinfra/error.c:84
#4 0x00007ffff6601d61 in _clib_error (how_to_die=2, function_name=0x0,
line_number=0, fmt=0x7ffff797b000 "%s:%d (%s) assertion `%s' fails")
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vppinfra/error.c:143
#5 0x00007ffff78b58d2 in vlib_buffer_set_known_state (vm=0x7fffb5f046f8,
buffer_index=68, state=VLIB_BUFFER_KNOWN_FREE)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/buffer_funcs.h:224
#6 0x00007ffff78b87e8 in fill_free_list (vm=0x7fffb5f046f8, fl=0x7fffb6072140,
min_free_buffers=256)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/buffer.c:556
#7 0x00007ffff78b8938 in alloc_from_free_list (vm=0x7fffb5f046f8,
free_list=0x7fffb6072140, alloc_buffers=0x7fffb6483464, n_alloc_buffers=256)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/buffer.c:592
#8 0x00007ffff78b8b7c in vlib_buffer_alloc_internal (vm=0x7fffb5f046f8,
buffers=0x7fffb6483464, n_buffers=256)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/buffer.c:620
#9 0x00007ffff73c15b4 in vlib_buffer_alloc (vm=0x7fffb5f046f8,
buffers=0x7fffb6483464, n_buffers=256)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/buffer_funcs.h:251
#10 0x00007ffff73c2be0 in af_packet_device_input_fn (vm=0x7fffb5f046f8,
node=0x7fffb6079d9c, frame=0x0, apif=0x7fffb5495a80)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vnet/devices/af_packet/node.c:141
#11 0x00007ffff73c3337 in af_packet_input_fn (vm=0x7fffb5f046f8,
node=0x7fffb6079d9c, frame=0x0)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vnet/devices/af_packet/node.c:259
#12 0x00007ffff78f2fe6 in dispatch_node (vm=0x7fffb5f046f8,
node=0x7fffb6079d9c, type=VLIB_NODE_TYPE_INPUT,
dispatch_state=VLIB_NODE_STATE_INTERRUPT, frame=0x0,
last_time_stamp=237041860335868) at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/main.c:1016
#13 0x00007ffff78f4f5f in vlib_main_or_worker_loop (vm=0x7fffb5f046f8,
is_main=0) at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/main.c:1552
#14 0x00007ffff78f570f in vlib_worker_loop (vm=0x7fffb5f046f8) at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/main.c:1650
#15 0x00007ffff793ef94 in vlib_worker_thread_fn (arg=0x7fffb5694e40) at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/threads.c:1378
#16 0x00007ffff6624edc in clib_calljmp () at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vppinfra/longjmp.S:110
#17 0x00007fff93492ed0 in ?? ()
#18 0x00007ffff793a4a5 in vlib_worker_thread_bootstrap_fn (arg=0x7fffb5694e40)
at
/home/sreejith/Downloads/sachin_odp4vpp/odp4vpp/build-data/../src/vlib/threads.c:464
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb)
It is not clear if I missed any needed config in the startup file configuration
or an issue with an environment. I also tried on different Centos native
machine but saw assertion.
If possible could you please suggest if anything I missed out.
Thanks & Regards,
Sreejith
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