dhcpcd-discuss

(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x0000ffffbf57d8e8 in __GI_abort () at abort.c:79
#2  0x0000ffffbf588f08 in __assert_fail_base (
    fmt=0xffffbf682f18 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
    assertion=assertion@entry=0xaaaaaaadf9c8 "rt->rt_ifp != NULL",
file=file@entry=0xaaaaaaadf8e8 "route.c",
    line=line@entry=345, function=function@entry=0xaaaaaaadf8b8
<__PRETTY_FUNCTION__.8824> "rt_recvrt")
    at assert.c:92
#3  0x0000ffffbf588f70 in __GI___assert_fail
(assertion=assertion@entry=0xaaaaaaadf9c8 "rt->rt_ifp != NULL",
    file=file@entry=0xaaaaaaadf8e8 "route.c", line=line@entry=345,
    function=function@entry=0xaaaaaaadf8b8 <__PRETTY_FUNCTION__.8824>
"rt_recvrt") at assert.c:101
#4  0x0000aaaaaaabdc48 in rt_recvrt (cmd=cmd@entry=1,
rt=rt@entry=0xffffffffad60) at route.c:370
#5  0x0000aaaaaaac28d0 in _if_initrt (ctx=<optimized out>,
ifp=<optimized out>, nlm=<optimized out>)
    at if-linux.c:1294
#6  0x0000aaaaaaac3064 in get_netlink (ctx=ctx@entry=0xfffffffff308,
iov=iov@entry=0xffffffffaf18,
    ifp=ifp@entry=0x0, fd=fd@entry=9, flags=flags@entry=0,
    callback=callback@entry=0xaaaaaaac2888 <_if_initrt>) at if-linux.c:389
#7  0x0000aaaaaaac3248 in send_netlink (ctx=ctx@entry=0xfffffffff308,
ifp=ifp@entry=0x0,
    protocol=protocol@entry=0, hdr=hdr@entry=0xffffffffef90,
    callback=callback@entry=0xaaaaaaac2888 <_if_initrt>) at if-linux.c:857
#8  0x0000aaaaaaac3bd8 in if_initrt (ctx=0xfffffffff308,
af=af@entry=10) at if-linux.c:1311
#9  0x0000aaaaaaacfde8 in ipv6_start (ifp=0xaaaaaab17020) at ipv6.c:1650
#10 0x0000aaaaaaab3874 in dhcpcd_startinterface (arg=0xaaaaaab17020)
at dhcpcd.c:970
#11 0x0000aaaaaaab5af0 in eloop_start (eloop=0xaaaaaab169c0,
signals=0xfffffffff408) at eloop.c:901
#12 0x0000aaaaaaab09dc in main (argc=<optimized out>,
argv=0xfffffffff6a8) at dhcpcd.c:2102
(gdb)

donald

On Sun, Mar 3, 2019 at 8:19 PM Roy Marples <roy@xxxxxxxxxxxx> wrote:
>
> On 04/03/2019 01:07, Donald Sharp wrote:
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x0000aaaaaaabdb04 in rt_recvrt (cmd=cmd@entry=1,
> > rt=rt@entry=0xffffffffad60) at route.c:345
> > 345 ctx = rt->rt_ifp->ctx;
> > (gdb)
> >
> > (gdb) p rt->rt_ifp
> > $1 = (struct interface *) 0x0
>
> Hmmm, that should never be NULL.
> I've sprinkled some more asserts to trap this.
> Can provide a backtrace from them please?
>
> Roy