On 4/26/19 1:08 PM, [email protected] wrote:
> Hello,
>
> after a "make clean", "./configure" and "make" I got this compile-time
> warning:
>
> --- snip ---
>
> sysdep/unix/io.c: In function ‘times_init’:
> sysdep/unix/io.c:135:45: warning: comparison is always false due to limited
> range of data type [-Wtype-limits]
> if ((ts.tv_sec < 0) || (((s64) ts.tv_sec) > ((s64) 1 << 40)))
> ^
> --- snap ---
>
>
> But unfortunately the segmentation fault is still there. Is there anything I
> can do?
Thank you for investigation; anyway I have no clue what may be happening.
I'll try to install a local QEMU host to simulate this and then I'll return
to you off-list if I don't happen to find any problem that may be related to
this.
Sadly, this seems too much to be some strange use-after-free (which may be
caused
by some architecture-specific misbehaviour) which I'm probably unable to debug
only from core.
Thank you
Maria
>
>
> --- 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=0xf1ede200, id=id@entry=1554) at nest/rt-attr.c:426
> a = <optimized out>
> #2 0x005267ba in nl_send_route (p=p@entry=0x575748, e=e@entry=0x587170,
> op=op@entry=1536, dest=<optimized out>, nh=<optimized out>,
> nh@entry=0x59c664) at sysdep/linux/netlink.c:1269
> ea = <optimized out>
> net = 0x588174
> a = 0x59c630
> eattrs = <optimized out>
> bufsize = 284
> priority = <optimized out>
> r = 0xbee4f180
> rsize = 312
> metrics = {16, 0, 0, 3202675588, 12, 5681780, 5796832, 5800932,
> 3202675764, 5783224, 5414941, 2147483648, 5797092, 5800932, 3202675764, 0}
> ews = {eattrs = 0x58e174, ea = 0x52aafb <krt_got_route+574>, visited
> = {5585652, 5797092, 5796884, 5585808}}
> #3 0x005271b8 in nl_add_rte (e=0x587170, p=0x575748) at
> sysdep/linux/netlink.c:1351
> a = 0x59c630
> err = 0
> a = <optimized out>
> err = <optimized out>
> nh = <optimized out>
> #4 krt_replace_rte (p=p@entry=0x575748, n=n@entry=0x588174,
> new=new@entry=0x587170, old=old@entry=0x5874b0) at sysdep/linux/netlink.c:1387
> err = 0
> #5 0x0052a4d2 in krt_prune (p=0x575748) at sysdep/unix/krt.c:751
> verdict = 2
> new = <optimized out>
> old = 0x5874b0
> rt_free = 0x0
> fn_ = 0x58817c
> ff_ = 0x574694
> count_ = <optimized out>
> n = <optimized out>
> t = 0x574330
> 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 = 0x575748
> q = 0x5758a8
> #7 0x004f2b86 in timers_fire (loop=loop@entry=0x56b7f0 <main_timeloop>) at
> lib/timer.c:235
> ---Type <return> to continue, or q <return> to quit--- base_time =
> 74049570330
> t = <optimized out>
> #8 0x0052976e in io_loop () at sysdep/unix/io.c:2193
> poll_tout = <optimized out>
> timeout = <optimized out>
> nfds = <optimized out>
> events = 1
> pout = <optimized out>
> t = <optimized out>
> s = <optimized out>
> n = <optimized out>
> fdmax = 256
> pfd = 0x585df0
> #9 0x004dabc6 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 26.04.19 um 08:09 schrieb [email protected]:
>>
>> 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 ---
>> ...
