[Tom Alsberg <alsbergt@xxxxxxxxxxxxx>]

Sorry, correction here...  In this trace there is no thread appearance
(except calling the _r function), but I saw something in another trace
(I'll post when I see).  And ldd shows ethereal linked with 
libpthread...

  -- Tom

On Thu, Sep 30, 2004 at 06:11:59PM +0200, Tom Alsberg wrote:
> Hi there.
> 
> Is there a way to avoid Ethereal hanging when looking up hostnames?
> (I read http://www.ethereal.com/faq.html#q5.45, but please read on)
> 
> I now built a new version of Ethereal (0.10.6) on i386-pc-linux-gnu,
> and trying to open some capture files I had, after a while of reading 
> it hangs.  I know it's a DNS thing because if I disable resolution
> while opening the files, it works smoothly.  But... for one, it does
> not seem to get out of the hang (even after 10 minutes, it's still 
> stuck exactly in the same place), and, for another, looking up the IP
> address manually (using nslookup) responds with NXDOMAIN immediately,
> and ping to it works...
> 
> Also, it seems to hang after returning from some thread switch:
> 
> ---Type <return> to continue, or q <return> to quit---
> #0  0x4116ce52 in loser_poll () from /lib/libc.so.6
> (gdb) bt
> #0  0x4116ce52 in loser_poll () from /lib/libc.so.6
> #1  0x41531e45 in send_dg () from /lib/libresolv.so.2
> #2  0x41531272 in __libc_res_nsend () from /lib/libresolv.so.2
> #3  0x4152ffa0 in __libc_res_nquery () from /lib/libresolv.so.2
> #4  0x41525392 in _nss_dns_gethostbyaddr_r () from /lib/libnss_dns.so.2
> #5  0x41189b39 in gethostbyaddr_r@@GLIBC_2.1.2 () from /lib/libc.so.6
> #6  0x41189965 in gethostbyaddr () from /lib/libc.so.6
> #7  0x4019b21c in host_name_lookup (addr=3291566909, found=0xbfffc5e0)
>     at ../../../ethereal-0.10.6/epan/addr_resolv.c:382
> #8  0x4019cfdd in get_hostname (addr=3291566909)
>     at ../../../ethereal-0.10.6/epan/addr_resolv.c:1541
> #9  0x403750e8 in dissect_ip (tvb=0x8562e58, pinfo=0x85602d0, tree=0x8505308)
>     at ../../../../ethereal-0.10.6/epan/dissectors/packet-ip.c:984
> #10 0x401a4cbc in call_dissector_through_handle (handle=0x8284d48, 
>     tvb=0x8562e58, pinfo=0x85602d0, tree=0x8505308)
>     at ../../../ethereal-0.10.6/epan/packet.c:363
> 
> even though I built it with --disable-threads...
> 
> I'd appreciate some help with this problem.  If any more details are
> needed, I can trace some more specifically with gdb.  I couldn't really
> see the problem - it seemed like a plain call to gethostbyaddr(), but
> perhaps some thread thing messed up there.
> 
>   Thanks, any help appreciated,
>   -- Tom
> 
> P.S., would appreciate a Cc: to me in the reply, as I'm not sure how long
> I would keep checking the archives for an answer...
> 
> -- 
>   Tom Alsberg - hacker (being the best description fitting this space)
>   Web page:	http://www.cs.huji.ac.il/~alsbergt/
> DISCLAIMER:  The above message does not even necessarily represent what
> my fingers have typed on the keyboard, save anything further.

-- 
  Tom Alsberg - hacker (being the best description fitting this space)
  Web page:	http://www.cs.huji.ac.il/~alsbergt/
DISCLAIMER:  The above message does not even necessarily represent what
my fingers have typed on the keyboard, save anything further.