On 2014/10/16 09:47, Eric Faurot wrote:
> On Wed, Oct 15, 2014 at 11:31:12PM -0400, Daniel Dickman wrote:
> > > ping hostname which has slash in the name causes seg fault
> > >
> > > # ping a/aa
> > > Segmentation fault
> > >
> > > ping6 seems to be ok reporting no address associated with name
> > > 5.4 ping is reporting unknown host - ok
> > >
> >
> > Thanks for reporting. Confirmed on -current i386. ping crashes when
> > calling gethostbyname("a/aa"). backtrace below.
> >
> > I'm cc'ing eric@ if he has any thoughts.
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > strlcpy (dst=0x3c0081ac "", src=0x0, siz=4084) at
> > /usr/src/lib/libc/string/strlcpy.c:37
> > 37 if ((*d++ = *s++) == '\0')
> > (gdb) bt
> > #0 strlcpy (dst=0x3c0081ac "", src=0x0, siz=4084) at
> > /usr/src/lib/libc/string/strlcpy.c:37
> > #1 0x1c005089 in _fillhostent (h=0x81274000, r=0x3c008180,
> > buf=Variable "buf" is not available.
> > ) at /usr/src/lib/libc/asr/gethostnamadr.c:73
> > #2 0x1c005320 in gethostbyname2 (name=0xcfbd9404 "a/aa", af=2) at
> > /usr/src/lib/libc/asr/gethostnamadr.c:125
> > #3 0x1c005400 in gethostbyname (name=0xcfbd9404 "a/aa") at
> > /usr/src/lib/libc/asr/gethostnamadr.c:142
> > #4 0x1c002ea3 in main (argc=Variable "argc" is not available.
> > ) at /usr/src/sbin/ping/ping.c:356
>
> Weird... I can't reproduce it here on i386 on a snapshot from sep25.
> And no asr diff was commited in between...
> Can you give more info about your setup? /etc/resolv.conf, /etc/hosts
>
> Eric.
>
I can't reproduce on -current i386, self-built on Tuesday.
I've tried with+without domain/search, single/multiple nameserver
entries.
