Hi Matthew, Thanks for looking into this issue. After applying the patch the crash is not seen.
However as mentioned earlier, we have faced this issue when configuring the bridge domain and adding a member port to it. 1. create a bridge [ brctl addbr 100] 2. try adding a interface to it [ brctl addif 100 Ethernet0 ] *Is there any plan to support this in VPP Linux cp* If there is any existing solution, could you please guide us? Thanks Pragya Nand Bhagat On Sat, Aug 20, 2022 at 2:13 AM Matthew Smith via lists.fd.io <mgsmith= netgate....@lists.fd.io> wrote: > > 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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