Hello All,
In *19.08** VPP version* we are seeing a crash while accessing the
*load_balance_pool* in *load_balanc_get*() function. This is happening
after *enabling worker threads*.
As such the FIB programming is happening in the main thread and in one of
the worker threads we see this crash.
Also, this is seen when we *scale to 300K+ ipv4 routes.*
Here is the complete stack,
Thread 10 "vpp_wk_0" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fbe4aa8e700 (LWP 333)]
0x00007fbef10636f8 in clib_bitmap_get (ai=0x1313131313131313, i=61) at
/home/ubuntu/Scale/libvpp/src/vppinfra/bitmap.h:201
201 return i0 < vec_len (ai) && 0 != ((ai[i0] >> i1) & 1);
Thread 10 (Thread 0x7fbe4aa8e700 (LWP 333)):
#0 0x00007fbef10636f8 in clib_bitmap_get (ai=0x1313131313131313, i=61) at
/home/ubuntu/Scale/libvpp/src/vppinfra/bitmap.h:201
#1 0x00007fbef10676a8 in load_balance_get (lbi=61) at
/home/ubuntu/Scale/libvpp/src/vnet/dpo/load_balance.h:222
#2 0x00007fbef106890c in ip4_lookup_inline (vm=0x7fbe8a5aa080,
node=0x7fbe8b3fd380, frame=0x7fbe8a5edb40) at
/home/ubuntu/Scale/libvpp/src/vnet/ip/ip4_forward.h:369
#3 0x00007fbef1068ead in ip4_lookup_node_fn_avx2 (vm=0x7fbe8a5aa080,
node=0x7fbe8b3fd380, frame=0x7fbe8a5edb40)
at /home/ubuntu/Scale/libvpp/src/vnet/ip/ip4_forward.c:95
#4 0x00007fbef0c6afec in dispatch_node (vm=0x7fbe8a5aa080,
node=0x7fbe8b3fd380, type=VLIB_NODE_TYPE_INTERNAL,
dispatch_state=VLIB_NODE_STATE_POLLING,
frame=0x7fbe8a5edb40, last_time_stamp=381215594286358) at
/home/ubuntu/Scale/libvpp/src/vlib/main.c:1207
#5 0x00007fbef0c6b7ad in dispatch_pending_node (vm=0x7fbe8a5aa080,
pending_frame_index=2, last_time_stamp=381215594286358)
at /home/ubuntu/Scale/libvpp/src/vlib/main.c:1375
#6 0x00007fbef0c6d3f0 in vlib_main_or_worker_loop (vm=0x7fbe8a5aa080,
is_main=0) at /home/ubuntu/Scale/libvpp/src/vlib/main.c:1826
#7 0x00007fbef0c6dc73 in vlib_worker_loop (vm=0x7fbe8a5aa080) at
/home/ubuntu/Scale/libvpp/src/vlib/main.c:1934
#8 0x00007fbef0cac791 in vlib_worker_thread_fn (arg=0x7fbe8de2a340) at
/home/ubuntu/Scale/libvpp/src/vlib/threads.c:1754
#9 0x00007fbef092da48 in clib_calljmp () from
/home/ubuntu/Scale/libvpp/build-root/install-vpp_debug-native/vpp/lib/libvppinfra.so.1.0.1
#10 0x00007fbe4aa8dec0 in ?? ()
#11 0x00007fbef0ca700c in vlib_worker_thread_bootstrap_fn
(arg=0x7fbe8de2a340) at /home/ubuntu/Scale/libvpp/src/vlib/threads.c:573
Thanks in Advance,
Rajith
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