[Xorp-users] Bugs? recursive malloc, fib2mrib doesn't update nexthop vif, and PIM RP never initiates a Register-Stop

[A.H.T]

On 8/15/06, Pavlin Radoslavov <pavlin at icir.org> wrote:
> > I am using XORP 1.3-Release for PIM-SMv6 and Zebra 0.95 for unicast
> > routing on FreeBSD 6.1.
> > The situations are:
> > 1. xorpsh sometimes issues recursive malloc calls, causing segmentation fault.
>
> Is the problem reproducible?
> If "yes", can you provide detailed instructions how to trigger it.
> If "no", can you send a backtrace of the coredump.
It sometimes happened after I gave "show pim6 join"  or "show pim6 mrib"

the XORP was not compiled with -ggdb on, so the backtrace after the
"show pim6 join" is
#0  0x284d4363 in kill () from /lib/libc.so.6
(gdb) bt
#0  0x284d4363 in kill () from /lib/libc.so.6
#1  0x284d4300 in raise () from /lib/libc.so.6
#2  0x284d3014 in abort () from /lib/libc.so.6
#3  0x284794d3 in _UTF8_init () from /lib/libc.so.6
#4  0xbfbfed98 in ?? ()
#5  0x284da4c9 in sys_nsig () from /lib/libc.so.6
#6  0x284da3d7 in sys_nsig () from /lib/libc.so.6
#7  0x284da49b in sys_nsig () from /lib/libc.so.6
#8  0x00000000 in ?? ()
#9  0x284e4508 in ?? () from /lib/libc.so.6
#10 0xbfbec2c8 in ?? ()
#11 0x28479501 in _UTF8_init () from /lib/libc.so.6
#12 0x284e4508 in ?? () from /lib/libc.so.6
#13 0x08230564 in vtable for __cxxabiv1::__class_type_info ()
#14 0xbfbec378 in ?? ()
#15 0x2847a588 in _UTF8_init () from /lib/libc.so.6
#16 0x00000020 in ?? ()
Previous frame inner to this frame (corrupt stack?)



>
> > 2. XORP doesn't update its nexthop vif on multicast routing table If
> > Zebra updates a routing entry.
> >     show route table ipv6 multicast fib2mrib shows that the nexthop
> > vif is not  changed even though the nexthop address is.
> >   I am not sure whether this problem is intermittent or not.
>
> Can you trigger the same problem by using userland commands like
> "route delete" and "route add". If "yes", could you provide the
> sequence of those commands.

Here's the snippet of the ndp command on my router
fe80::2e0:81ff:fe20:afc2%fxp0        0:e0:81:20:af:c2    fxp0 16h26m32s S R
fe80::207:e9ff:fe05:ba6f%fxp1        0:7:e9:5:ba:6f      fxp1 17s       R R

a. after
route -n add -inet6 A:B:C:D::/64 fe80::2e0:81ff:fe20:afc2%fxp0

show pim6 mrib shows
A:B:C:D::/64 fe80::2e0:81ff:fe20:afc2 fxp0    0               254  65535

b. after
route -n change -inet6 A:B:C:D::/64 fe80::207:e9ff:fe05:ba6f%fxp1
show pim6 mrib shows
A:B:C:D::/64 fe80::207:e9ff:fe05:ba6f fxp0    0               254  65535

c. deleting the A:B:C:D::/64 and then
route -n add -inet6 A:B:C:D::/64 fe80::207:e9ff:fe05:ba6f%fxp1
gives the same result

show pim6 mrib shows
A:B:C:D::/64 fe80::207:e9ff:fe05:ba6f fxp0    0               254  65535



Thank you for your explanation on point 3.

regards

-- 
<husni>