Hi Florin, Thanks for a quick response. Looks like the WK pointer is invalid causing the segmentation fault. Sure, I will try with a debug image and check the tcp_main data structure
On Tue, May 3, 2022 at 12:06 PM Florin Coras <fcoras.li...@gmail.com> wrote: > Hi Vijay, > > Error seems unrelated to the patch. Hard to say from the trace what’s > going on. If f5 is to be believed, wrk pointer looks corrupted. Hard to say > why that happened given that tcp_get_worker should not fail. Maybe inspect > &tcp_main.wrk_ctx[thread_index] or run a debug image. > > Regards, > Florin > > On May 2, 2022, at 10:54 PM, Vijay Kumar <vjkumar2...@gmail.com> wrote: > > Hi experts, > > I am seeing the below pasted call stack. We are using vpp 21.06. The crash > is in tcp_update_time_now() called inside tcp46_input_inline. I had not > done any changes to *tcp46_input_inline *graph node. All I did was add > this patch mentioned below. This patch was applied recently in the function* > tcp46_listen_inline()* to increment error counters. > > https://gerrit.fd.io/r/c/vpp/+/35654/ > > NOTE > ======= > The VPP was working fine for a long time even after applying the above > patch but recently we added more features and the crash may be happening as > a side-effect of the new code we added. > > Pls let me know if you have seen this crash or if you may have some > suggestions for this crash??? > > > Call stack > ============= > #0 0x00007f59ccfc888c in __pthread_kill_implementation () from > /lib64/libc.so.6 > #1 0x00007f59ccf7b6a6 in raise () from /lib64/libc.so.6 > #2 0x00007f59ccf65865 in abort () from /lib64/libc.so.6 > #3 0x000055bf7f28d30a in os_exit (code=<optimized out>) at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vpp/vnet/main.c:477 > #4 <signal handler called> > #5 0x00007f59cdf7bb23 in tcp_update_time_now (wrk=0xa640) at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vnet/tcp/tcp_inlines.h:226 > #6 tcp46_input_inline (is_nolookup=0 '\000', is_ip4=0, frame=<optimized > out>, node=<optimized out>, vm=0x7f58ab281e00) > at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vnet/tcp/tcp_input.c:2876 > #7 tcp6_input_node_fn_skx (vm=0x7f58ab281e00, node=0x7f584e33c440, > from_frame=0x7f58ab49e900) > at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vnet/tcp/tcp_input.c:3051 > #8 0x00007f59cd30bc05 in dispatch_node (last_time_stamp=<optimized out>, > frame=<optimized out>, dispatch_state=VLIB_NODE_STATE_POLLING, > type=VLIB_NODE_TYPE_INTERNAL, node=0x7f584e33c440, vm=0x7f58ab281e00) > at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vlib/main.c:1063 > #9 dispatch_pending_node (vm=vm@entry=0x7f58ab281e00, > pending_frame_index=pending_frame_index@entry=6, > last_time_stamp=<optimized out>) > at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vlib/main.c:1243 > #10 0x00007f59cd30d9b7 in vlib_main_or_worker_loop (is_main=0, > vm=0x7f58ab281e00) > at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vlib/main.c:1832 > #11 vlib_worker_loop (vm=0x7f58ab281e00) at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vlib/main.c:1966 > #12 0x00007f59cd28261c in clib_calljmp () at > /usr/src/debug/vpp-21.06.0-5~gfad0b64b3_dirty.x86_64/src/vppinfra/longjmp.S:123 > #13 0x00007f54837fdc80 in ?? () > #14 0x00007f584847b1e9 in eal_thread_loop.cold () from > /usr/lib/vpp_plugins/dpdk_plugin.so > #15 0x0000000000000000 in ?? () > > > > > Regards, > Vijay Kumar N > > > > >
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