Hi Pragya, This patch should fix it - https://gerrit.fd.io/r/c/vpp/+/36961. Can you apply it to your build and confirm whether it resolves the issue?
Thanks, -Matt On Wed, Aug 17, 2022 at 6:55 AM Pragya Nand Bhagat < pragya.nand.bhaga...@gmail.com> wrote: > Hi All, > > I'm seeing a crash in VPP when we try to add a port to a bridge . > VPP is running with the lcp plugin. > > > lcp default netns '<unset>' > lcp lcp-auto-subint off > lcp lcp-sync on > lcp del-static-on-link-down off > lcp del-dynamic-on-link-down off > > itf-pair: [0] port0/0 tap1 Ethernet0 96 type tap > Following are the steps to recreate : > > > > 1. create a bridge [ brctl addbr 100] > 2. try adding a interface to it [ brctl addif 100 Ethernet0 ] > 3. VPP crashes > > We got the following stack trace . > > > Thread 1 "vpp_main" received signal SIGSEGV, Segmentation fault. > 0x00007f1239448c30 in nl_addr_get_family () from > /lib/x86_64-linux-gnu/libnl-3.so.200 > (gdb) bt > #0 0x00007f1239448c30 in nl_addr_get_family () from > /lib/x86_64-linux-gnu/libnl-3.so.200 > #1 0x00007f12393b9025 in lcp_router_mk_addr (rna=0x0, ia=0x7f123703ade0) > at /vpp/src/plugins/linux-cp/lcp_router.c:589 > #2 lcp_router_neigh_add (rn=0x674b80) at > /vpp/src/plugins/linux-cp/lcp_router.c:763 > #3 0x00007f12393c2bcd in nl_neigh_add (rn=0x674b80, arg=<optimized out>) > at /vpp/src/plugins/linux-cp/lcp_nl.c:232 > #4 nl_route_dispatch (obj=0x674b80, arg=<optimized out>) at > /vpp/src/plugins/linux-cp/lcp_nl.c:311 > #5 0x00007f123944e8ee in ?? () from /lib/x86_64-linux-gnu/libnl-3.so.200 > #6 0x00007f1239404bb4 in ?? () from > /lib/x86_64-linux-gnu/libnl-route-3.so.200 > #7 0x00007f123944b5c3 in nl_cache_parse () from > /lib/x86_64-linux-gnu/libnl-3.so.200 > #8 0x00007f12394502cb in nl_msg_parse () from > /lib/x86_64-linux-gnu/libnl-3.so.200 > #9 0x00007f12393c2033 in nl_route_process_msgs () at > /vpp/src/plugins/linux-cp/lcp_nl.c:344 > #10 nl_route_process (vm=0x7f123ac6d700, node=<optimized out>, > frame=<optimized out>) at /vpp/src/plugins/linux-cp/lcp_nl.c:557 > #11 0x00007f127b1dbbe7 in vlib_process_bootstrap (_a=<optimized out>) at > /vpp/src/vlib/main.c:1222 > #12 0x00007f127b0e4258 in clib_calljmp () at > /vpp/src/vppinfra/longjmp.S:123 > #13 0x00007f1239245d60 in ?? () > #14 0x00007f127b1d38b0 in vlib_process_startup (vm=0x7f123ac6d700, > p=0x7f123c12bd80, f=0x0) at /vpp/src/vlib/main.c:1247 > #15 dispatch_process (vm=0x7f123ac6d700, p=0x7f123c12bd80, f=0x0, > last_time_stamp=<optimized out>) at /vpp/src/vlib/main.c:1303 > #16 0x0000000000000000 in ?? () > > > Looks like interface netlink event is not handled for scenarios when an > interface is added to bridge. > Please revert if any other information is required. > > > > Thank You > > Pragya Nand > > > >
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