BIRD 2.0.4 segfaulting on ARM

[lorenz at irmhil.de]

Hello again!

I'm new to gdb - thank you for your quick advice.

I ran bird again, about 10 seconds later it segfaulted again and dumped
core.

Looks like some strange metrics?

I tried running bird on another ARM v7-box (Odroid XU4, nearly the same
hardware as the Odroid HC-2) on the same network with a similar config.
That bird doesn't crash. Perhaps something happend on compiling or
installing bird, I'll try recompiling and reinstalling it.

Thanks for any support!

Lorenz


The backtrace is:

--- snip ---

Core was generated by `bird -c bird.conf'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  ea__find (id=1554, e=0x81000601, e at entry=0x0) at nest/rt-attr.c:389
389	      if (e->flags & EALF_BISECT)
(gdb) #0  ea__find (id=1554, e=0x81000601, e at entry=0x0) at nest/rt-attr.c:389
        a = <optimized out>
        l = <optimized out>
        r = <optimized out>
        m = <optimized out>
        a = <optimized out>
        l = <optimized out>
        r = <optimized out>
        m = <optimized out>
#1  ea_find (e=e at entry=0x0, id=id at entry=1554) at nest/rt-attr.c:426
        a = <optimized out>
#2  0x005367ba in nl_send_route (p=p at entry=0x585748, e=e at entry=0x597170, op=op at entry=1536, dest=<optimized out>, nh=<optimized out>, nh at entry=0x5acf3c) at sysdep/linux/netlink.c:1269
        ea = <optimized out>
        net = 0x598174
        a = 0x5acf08
        eattrs = <optimized out>
        bufsize = 284
        priority = <optimized out>
        r = 0xbe90c190
        rsize = 312
        metrics = {16, 0, 0, 3197158292, 12, 5747316, 5862368, 5866468, 3197158468, 5848760, 5480477, 2147483648, 5862680, 5866468, 3197158468, 0}
        ews = {eattrs = 0xfc754f7b, ea = 0xb6fd1968 <__stack_chk_guard>, visited = {5789512, 5862680, 5862420, 8192}}
#3  0x005371b8 in nl_add_rte (e=0x597170, p=0x585748) at sysdep/linux/netlink.c:1351
        a = 0x5acf08
        err = 0
        a = <optimized out>
        err = <optimized out>
        nh = <optimized out>
#4  krt_replace_rte (p=p at entry=0x585748, n=n at entry=0x598174, new=new at entry=0x597170, old=old at entry=0x5974e4) at sysdep/linux/netlink.c:1387
        err = 0
#5  0x0053a4d2 in krt_prune (p=0x585748) at sysdep/unix/krt.c:751
        verdict = 2
        new = <optimized out>
        old = 0x5974e4
        rt_free = 0x0
        fn_ = 0x59817c
        ff_ = 0x584694
        count_ = <optimized out>
        n = <optimized out>
        t = 0x584330
        t = <optimized out>
        fn_ = <optimized out>
        ff_ = <optimized out>
        count_ = <optimized out>
        n = <optimized out>
        verdict = <optimized out>
        new = <optimized out>
        old = <optimized out>
        rt_free = <optimized out>
#6  krt_scan (t=<optimized out>) at sysdep/unix/krt.c:838
        p = 0x585748
        q = 0x5858a8
#7  0x00502b86 in timers_fire (loop=loop at entry=0x57b7f0 <main_timeloop>) at lib/timer.c:235
---Type <return> to continue, or q <return> to quit---        base_time = 55775154043
        t = <optimized out>
#8  0x0053976e in io_loop () at sysdep/unix/io.c:2193
        poll_tout = <optimized out>
        timeout = <optimized out>
        nfds = <optimized out>
        events = 0
        pout = <optimized out>
        t = <optimized out>
        s = <optimized out>
        n = <optimized out>
        fdmax = 256
        pfd = 0x595df0
#9  0x004eabc6 in main (argc=<optimized out>, argv=<optimized out>) at sysdep/unix/main.c:884
        use_uid = <optimized out>
        use_gid = <optimized out>
        conf = <optimized out>
(gdb) quit
--- snap ---




Am 25.04.19 um 23:36 schrieb Maria Matějka:
> Hello!
>
> ulimit -c unlimited
> bird ...
> (after it crashes)
> gdb bird core <<EOF
> backtrace full
> EOF
>
> Or, alternatively, try running it in Valgrind.
> Maria
>
> On April 25, 2019 7:50:32 PM GMT+02:00, lorenz at irmhil.de wrote:
>
>     Hello bird-users,
>
>     bird crashes a few seconds after startup on my Hardkernel ODROID HC-2
>     running Ubuntu. Kernel version is 4.14.111-158.
>
>
>     How can I debug this?
>
>
>     I tried:
>
>
>     $ bird -c bird.conf -d -D debug.log
>
>     --> debug.log is 0 bytes.
>
>
>
>     next try:
>
>     $ bird -c bird.conf
>
>     $ birdc
>
>     # debug all all
>
>     # echo all
>
>     Last lines of output is:
>
>                 MyOSPF: HELLO packet sent via eth0.1000 MyOSPF: HELLO
>                 packet received from nbr 10.99.0.1 on eth0.1000
>                 MyOSPF: HELLO packet received from nbr 10.2.0.0 on
>                 eth0.1000 MyOSPF: LSACK packet sent via eth0.1000
>                 MyOSPF:     length   56 MyOSPF:     router   33.3.0.0
>                 MyOSPF:     LSA      Type: 4005, Id: 0.0.0.1, Rt:
>                 10.99.0.1, Seq: 
>
>     8000068a, Age: 1, Sum: 97a9
>
>                 MyOSPF:     LSA      Type: 0008, Id: 0.0.0.40, Rt:
>                 10.99.0.1, Seq: 
>
>     80000633, Age: 1, Sum: e252
>     Connection closed by server
>
>
>     I would be glad helping fixing this bug.
>
>
>     Thanks a lot,
>
>     Lorenz
>
>
> -- 
> Sent from my Android device with K-9 Mail. Please excuse my brevity. 
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