On Tue, Aug 23, 2022 at 7:40 AM Pragya Nand Bhagat < pragya.nand.bhaga...@gmail.com> wrote:
> 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* > > Hi Pragya, What do you mean by "support this"? Are you talking about automatically creating a bridge domain in VPP and adding/removing member interfaces based on netlink messages? Or something else? -Matt > 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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