==27446== Syscall param write(buf) points to uninitialised byte(s)
==27446==    at 0x4A7D903: __write_nocancel (in /lib/libc-2.5.so)
==27446==    by 0xA56BA: write_data (util_sock.c:556)
==27446==    by 0x1FD60: write_child (asyncdns.c:187)
==27446==    by 0x1FDB7: queue_dns_query (asyncdns.c:295)
==27446==    by 0x3BFD8: wins_process_name_query_request (nmbd_winsserver.c:1958)
==27446==    by 0x2FC51: run_packet_queue (nmbd_packets.c:1505)
==27446==    by 0x21934: main (nmbd.c:394)
==27446==  Address 0xbeb54a6c is on thread 1's stack
==27446==
==27446== ---- Attach to debugger ? --- [Return/N/n/Y/y/C/c] ---- y
==27446== starting debugger with cmd: xterm -e /usr/bin/gdb -nw /proc/28842/fd/1024 28842

(gdb) bt full
#0  0x040008b2 in ?? ()
No symbol table info available.
#1  0x04a7d903 in ?? ()
No symbol table info available.
#2  0x000f2ff4 in ?? ()
No symbol table info available.
#3  0x000911cb in sys_write (fd=8, buf=0xbeb54a18, count=88)
    at lib/system.c:140
        ret = 0
#4  0x000a56bb in write_data (fd=8, buffer=0xbeb54a18 "BASHIR", N=88)
    at lib/util_sock.c:556
        total = 0
        ret = <value optimized out>
        __FUNCTION__ = "write_data"
#5  0x0001fd61 in write_child (p=<value optimized out>) at nmbd/asyncdns.c:187
        r = {name = {name = "BASHIR\000\000\000\000\000\000\000\000\000",
    scope = '\0' <repeats 63 times>, name_type = 32}, result = {s_addr = 0}}
#6  0x0001fdb8 in queue_dns_query (p=0x4f81d78, question=0x4f81dcc)
    at nmbd/asyncdns.c:295
        __FUNCTION__ = "queue_dns_query"
#7  0x0003bfd9 in wins_process_name_query_request (subrec=0x4d4f9d8,
    p=0x4f81d78) at nmbd/nmbd_winsserver.c:1958
        question = (struct nmb_name *) 0x4f81dcc
        namerec = (struct name_record *) 0x0
        qname = "BASHIR\000\000�\017\000\030K��|�002\000x\035�004", '\0' <repeats 20 times>, "\230\035�004", '\0' <repeats 15 times>
        __FUNCTION__ = "wins_process_name_query_request"
#8  0x0002fc52 in run_packet_queue () at nmbd/nmbd_packets.c:1505
        p = (struct packet_struct *) 0x4f81d78
#9  0x00021935 in main (argc=1213415746, argv=0xbeb55154) at nmbd/nmbd.c:394
        logfile = "/var/log/samba/log.nmbd\000���\000\000\000\000\000\000\000\000\001\000\000\000u\003\000\000\200\205�004��233\004sc�\004\234\230\235\004\220Q�\004\001\000\000\000�001\004\030�233\004\214M���M��e\233\000\004\220Q�\004\214M��\\�001\004\016\000\000\000\200\205�004\001\000\000\000\000\000\000\000\001\000\000\000x/vgpreload_core.so\000\230M��/loc���X�233\004sc�\004ind\001W�223\034\000\000\000\000x/vgpreload_0\204�\004\004\000\000\024 \026�\004", '\0' <repeats 32 times>...
        pc = <value optimized out>
        long_options = {{longName = 0x0, shortName = 0 '\0', argInfo = 4,
    arg = 0x48b60e0, val = 0, descrip = 0xc5a67 "Help options:",
    argDescrip = 0x0}, {longName = 0xc5a75 "daemon", shortName = 68 'D',
    argInfo = 7, arg = 0xfa3a8, val = 1,
    descrip = 0xc5a7c "Become a daemon(default)", argDescrip = 0x0}, {
    longName = 0xc5a95 "interactive", shortName = 105 'i', argInfo = 7,
    arg = 0xfa39c, val = 1,
    descrip = 0xc5ca0 "Run interactive (not a daemon)", argDescrip = 0x0}, {
    longName = 0xc5aa1 "foreground", shortName = 70 'F', argInfo = 7,
    arg = 0xf3484, val = 0,
    descrip = 0xc5cc0 "Run daemon in foreground (for daemontools & etc)",
    argDescrip = 0x0}, {longName = 0xc5aac "no-process-group",
    shortName = 0 '\0', argInfo = 7, arg = 0xfa398, val = 1,
    descrip = 0xc5cf4 "Don't create a new process group", argDescrip = 0x0}, {
    longName = 0xc5abd "log-stdout", shortName = 83 'S', argInfo = 7,
    arg = 0xfa3ac, val = 1, descrip = 0xc5ac8 "Log to stdout",
    argDescrip = 0x0}, {longName = 0xd038a "hosts", shortName = 72 'H',
    argInfo = 1, arg = 0xf3488, val = 72,
    descrip = 0xc5ad6 "Load a netbios hosts file", argDescrip = 0x0}, {
    longName = 0xc5b08 "port", shortName = 112 'p', argInfo = 2,
    arg = 0xf3480, val = 137,
    descrip = 0xc5af0 "Listen on the specified port", argDescrip = 0x0}, {
    longName = 0x0, shortName = 0 '\0', argInfo = 4, arg = 0xfa180, val = 0,
    descrip = 0xc5b0d "Common samba options:", argDescrip = 0x0}, {
    longName = 0x0, shortName = 0 '\0', argInfo = 0, arg = 0x0, val = 0,
    descrip = 0x0, argDescrip = 0x0}}
        opt_interactive = 0
        p_lmhosts = 0xf3ca0 "/etc/samba/lmhosts"
        no_process_group = 0
        __FUNCTION__ = "main"
(gdb) frame 8
#8  0x0002fc52 in run_packet_queue () at nmbd/nmbd_packets.c:1505
1505                                                    wins_process_name_query_request(subrec, p);
(gdb) p *p
$1 = {next = 0x0, prev = 0x0, locked = 0, ip = {s_addr = 341465990},
  port = 137, fd = 11, timestamp = 1204110669, packet_type = NMB_PACKET,
  packet = {nmb = {header = {name_trn_id = 33567, opcode = 0, response = 0,
        nm_flags = {bcast = 0, recursion_available = 0, recursion_desired = 1,
          trunc = 0, authoritative = 0}, rcode = 0, qdcount = 1, ancount = 0,
        nscount = 0, arcount = 0}, question = {question_name = {
          name = "BASHIR\000\000\000\000\000\000\000\000\000",
          scope = '\0' <repeats 63 times>, name_type = 32},
        question_type = 32, question_class = 1}, answers = 0x0, nsrecs = 0x0,
      additional = 0x0}, dgram = {header = {msg_type = 33567, flags = {
          node_type = B_NODE, first = 0, more = 0}, dgm_id = 0, source_ip = {
          s_addr = 1}, source_port = 0, dgm_length = 0, packet_offset = 0},
      source_name = {name = "\001", '\0' <repeats 14 times>,
        scope = "BASHIR", '\0' <repeats 57 times>, name_type = 0},
      dest_name = {name = '\0' <repeats 12 times>, " \000\000",
        scope = " \000\000\000\001", '\0' <repeats 58 times>, name_type = 0},
      datasize = 0, data = '\0' <repeats 575 times>}}}
(gdb) frame 7
#7  0x0003bfd9 in wins_process_name_query_request (subrec=0x4d4f9d8,
    p=0x4f81d78) at nmbd/nmbd_winsserver.c:1958
1958                    queue_dns_query(p, question);
(gdb) p *subrec
$2 = {next = 0x0, prev = 0x0, subnet_name = 0x4d4fa40 "WINS_SERVER_SUBNET",
  type = WINS_SERVER_SUBNET, workgrouplist = 0x0, namelist = 0x4f7efd8,
  responselist = 0x0, namelist_changed = 0, work_changed = 0, bcast_ip = {
    s_addr = 0}, mask_ip = {s_addr = 0}, myip = {s_addr = 0}, nmb_sock = -1,
  dgram_sock = -1}
(gdb) frame 6
#6  0x0001fdb8 in queue_dns_query (p=0x4f81d78, question=0x4f81dcc)
    at nmbd/asyncdns.c:295
295                     if (!write_child(p)) {
(gdb) p *question
$3 = {name = "BASHIR\000\000\000\000\000\000\000\000\000",
  scope = '\0' <repeats 63 times>, name_type = 32}
(gdb) frame 5
#5  0x0001fd61 in write_child (p=<value optimized out>) at nmbd/asyncdns.c:187
187             return write_data(fd_out, (char *)&r, sizeof(r)) == sizeof(r);
(gdb) p r
$4 = {name = {name = "BASHIR\000\000\000\000\000\000\000\000\000",
    scope = '\0' <repeats 63 times>, name_type = 32}, result = {s_addr = 0}}