Hi Chetan, The null-node should not be encountered under normal operation. The null-node always has an index/value of 0, therefore if the previous node has not been properly configured, or the arc taken from that node was wrong, then the packet can likely end up at the null-node. To debug this I would suggest you run a debug image and enable the packet trajectory tracer (grep VLIB_BUFFER_TRACE_TRAJECTORY) so you can see where these packets originate from.
Regards, Neale De : <vpp-dev@lists.fd.io> au nom de chetan bhasin <chetan.bhasin...@gmail.com> Date : mercredi 21 novembre 2018 à 06:16 À : "Dave Barach (dbarach)" <dbar...@cisco.com> Cc : "vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io> Objet : Re: [vpp-dev] Getting crash while running load on VPP18.01 for 6 hours Hi Dave, Thanks a lot. one more query ,what is the purpose of null_node ? and when this scenario will be provoked that null_node is hit? Thanks, Chetan Bhasin On Tue, Nov 20, 2018 at 10:57 PM Dave Barach (dbarach) <dbar...@cisco.com<mailto:dbar...@cisco.com>> wrote: See https://wiki.fd.io/view/VPP/Pulling,_Building,_Running,_Hacking_and_Pushing_VPP_Code#Pushing_Code_with_git_review From: chetan bhasin <chetan.bhasin...@gmail.com<mailto:chetan.bhasin...@gmail.com>> Sent: Tuesday, November 20, 2018 11:43 AM To: Dave Barach (dbarach) <dbar...@cisco.com<mailto:dbar...@cisco.com>> Subject: Re: [vpp-dev] Getting crash while running load on VPP18.01 for 6 hours Thanks Dave! I will try with DEBUG too. Just want to understand the procedure to check in the patches, actually we have done several fixes in VPP, so we are planning to Check-in all patches. Thanks, Chetan Bhasin On Tue, Nov 20, 2018, 18:02 Dave Barach (dbarach) <dbar...@cisco.com<mailto:dbar...@cisco.com> wrote: Several suggestions: · Try a debug image (PLATFORM=vpp TAG=vpp_debug) so the crash will be more enlightening · Switch to 18.10. 18.01 is no longer supported. We don’t use the mheap.c memory allocator anymore, and so on and so forth. · See https://wiki.fd.io/view/VPP/BugReports From: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io> <vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>> On Behalf Of chetan bhasin Sent: Tuesday, November 20, 2018 5:31 AM To: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io> Subject: [vpp-dev] Getting crash while running load on VPP18.01 for 6 hours Hi Vpp-dev, We are facing issues while running load for ~6 hours . getting below crash. Your Suggestion is really appreciated. #1 0x00002b00b990e8f8 in __GI_abort () at abort.c:90 #2 0x0000000000405f23 in os_panic () at /bfs-build/build-area.49/builds/LinuxNBngp_7.X_RH7/2018-11-16-0505/third-party/vpp/vpp_1801/build-data/../src/vpp/vnet/main.c:268 #3 0x00002b00b8d60710 in mheap_put (v=0x2b00ba3d8000, uoffset=2382207096) at /bfs-build/build-area.49/builds/LinuxNBngp_7.X_RH7/2018-11-16-0505/third-party/vpp/vpp_1801/build-data/../src/vppinfra/mheap.c:798 #4 0x00002b00b8d8959e in clib_mem_free (p=0x2b00c8ba84a0) at /bfs-build/build-area.49/builds/LinuxNBngp_7.X_RH7/2018-11-16-0505/third-party/vpp/vpp_1801/build-data/../src/vppinfra/mem.h:213 #5 vec_resize_allocate_memory (v=<optimized out>, length_increment=length_increment@entry=1, data_bytes=<optimized out>, header_bytes=<optimized out>, header_bytes@entry=0, data_align=data_align@entry=4) at /bfs-build/build-area.49/builds/LinuxNBngp_7.X_RH7/2018-11-16-0505/third-party/vpp/vpp_1801/build-data/../src/vppinfra/vec.c:96 #6 0x00002b00b79e899d in _vec_resize (data_align=<optimized out>, header_bytes=<optimized out>, data_bytes=<optimized out>, length_increment=<optimized out>, v=<optimized out>) at /nfs-bfs/workspace/build-data/../src/vppinfra/vec.h:142 #7 get_frame_size_info (n_scalar_bytes=<optimized out>, n_vector_bytes=<optimized out>, nm=0x2b00c87a3160, nm=0x2b00c87a3160) at /nfs-bfs/workspace//build-data/../src/vlib/main.c:107 #8 0x00002b00b79e8d79 in vlib_frame_free (vm=vm@entry=0x2b00c87a3050, r=r@entry=0x2b00c86ca368, f=f@entry=0x2b014b2ecb80) at /nfs-bfs//vpp_1801/build-data/../src/vlib/main.c:221 #9 0x00002b00b79fe6e6 in null_node_fn (vm=0x2b00c87a3050, node=0x2b00c86ca368, frame=0x2b014b2ecb80) at /nfs-bfs/workspace/build-data/../src/vlib/node.c:512 Thanks, Chetan
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