$ gdb /usr/lib/chromium/chromium
GNU gdb (GDB) 7.1
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/lib/chromium/chromium...(no debugging symbols found)...done.
(gdb) run http://test-a/
Starting program: /usr/lib/chromium/chromium http://test-a/
[Thread debugging using libthread_db enabled]
[New Thread 0xb6a6cb70 (LWP 15092)]
[New Thread 0xb6102b70 (LWP 15093)]
[New Thread 0xb5901b70 (LWP 15094)]
[New Thread 0xb5100b70 (LWP 15095)]
[New Thread 0xb48ffb70 (LWP 15096)]
[New Thread 0xb40feb70 (LWP 15097)]
[New Thread 0xb38fdb70 (LWP 15098)]
[New Thread 0xb30fcb70 (LWP 15099)]
[New Thread 0xb28fab70 (LWP 15100)]
[New Thread 0xb28d9b70 (LWP 15101)]
[New Thread 0xb28b8b70 (LWP 15102)]
[New Thread 0xb2897b70 (LWP 15103)]
[New Thread 0xb2518b70 (LWP 15108)]
[Thread 0xb2518b70 (LWP 15108) exited]
[New Thread 0xb2518b70 (LWP 15110)]
[Thread 0xb2518b70 (LWP 15110) exited]
[New Thread 0xb2518b70 (LWP 15137)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb28d9b70 (LWP 15101)]
0xb1bcee27 in talloc_strdup () from /lib/libnss_wins.so.2
(gdb) backtrace
#0  0xb1bcee27 in talloc_strdup () from /lib/libnss_wins.so.2
#1  0xb1b3266a in talloc_sub_basic (mem_ctx=0x398, smb_name=0xb1bdcd65 "", 
    domain_name=0xb1c87200 "", str=0xa4629b8 "/var/cache/samba")
    at lib/substitute.c:540
#2  0xb1a069a9 in lp_string (s=0xa4629b8 "/var/cache/samba")
    at param/loadparm.c:5246
#3  0xb1b2a060 in lock_path (name=0xb1c2f3a5 "unexpected.tdb")
    at lib/util.c:2202
#4  0xb1a70211 in receive_unexpected (packet_type=NMB_PACKET, id=17418, 
    mailslot_name=0x0) at libsmb/unexpected.c:191
#5  0xb1a726cd in receive_nmb_packet (fd=61, t=90, trn_id=17418)
    at libsmb/nmblib.c:1138
#6  0xb1a74235 in name_query (fd=61, name=0xb28d8ae0 "cssosrtkel", 
    name_type=0, bcast=true, recurse=true, to_ss=0xb28d8be0, count=0xb28d8c7c, 
    flags=0xb28d8c74, timed_out=0x0) at libsmb/namequery.c:727
#7  0xb1a01e35 in lookup_byname_backend (hostname=0xb107095c "cssosrtkel", 
    he=0xb28d901c, buffer=0xb28d8d50 "\177", buflen=512, h_errnop=0xb28d9b28)
    at ../nsswitch/wins.c:148
#8  _nss_wins_gethostbyname_r (hostname=0xb107095c "cssosrtkel", 
    he=0xb28d901c, buffer=0xb28d8d50 "\177", buflen=512, h_errnop=0xb28d9b28)
    at ../nsswitch/wins.c:349
#9  0xb1a01edf in _nss_wins_gethostbyname2_r (name=0xb107095c "cssosrtkel", 
    af=2, he=0xb28d901c, buffer=0xb28d8d50 "\177", buflen=512, 
---Type <return> to continue, or q <return> to quit---
    h_errnop=0xb28d9b28) at ../nsswitch/wins.c:446
#10 0xb7274775 in gethostbyname2_r@@GLIBC_2.1.2 () from /lib/libc.so.6
#11 0xb7244e63 in gaih_inet () from /lib/libc.so.6
#12 0xb7246ce5 in getaddrinfo () from /lib/libc.so.6
#13 0x087ffd8a in ?? ()
#14 0x087fbd90 in ?? ()
#15 0x087fc489 in ?? ()
#16 0x0939c818 in ?? ()
#17 0x085d20b1 in ?? ()
#18 0xb76038ac in start_thread () from /lib/libpthread.so.0
#19 0xb725d01e in clone () from /lib/libc.so.6
(gdb)