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@entry=0x0) at nest/rt-attr.c:389
389	      if (e->flags & EALF_BISECT)
(gdb) #0  ea__find (id=1554, e=0x81000601, e@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@entry=0x0, id=id@entry=1554) at nest/rt-attr.c:426
        a = <optimized out>
#2  0x005367ba in nl_send_route (p=p@entry=0x585748, e=e@entry=0x597170, op=op@entry=1536, dest=<optimized out>, nh=<optimized out>, nh@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@entry=0x585748, n=n@entry=0x598174, new=new@entry=0x597170, old=old@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@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 ---

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@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.