(gdb) bt
#0  0x420ae169 in wait4 () from /lib/i686/libc.so.6
#1  0x4212a2d0 in __DTOR_END__ () from /lib/i686/libc.so.6
#2  0x42041fc4 in do_system () from /lib/i686/libc.so.6
#3  0x081808ce in smb_panic (why=0x8225b9d "internal error") at lib/util.c:1391
#4  0x08172237 in fault_report (sig=11) at lib/fault.c:41
#5  <signal handler called>
#6  0x42073fe0 in _int_free () from /lib/i686/libc.so.6
#7  0x42074a2c in free () from /lib/i686/libc.so.6
#8  0x081a0260 in free_a_printer_driver (driver={info_3 = 0x4212a2d0, info_6 = 0xbfffede8}, level=4294966784) at printing/nt_printing.c:4124
#9  0x08088e3e in get_printerdrivernumber (snum=16) at smbd/lanman.c:705
#10 0x0808923e in api_DosPrintQGetInfo (conn=0x8350390, vuid=100, param=0x8351b20 "F", data=0x0, mdrcnt=1024, mprcnt=6, rdata=0xbffff7cc,
    rparam=0xbffff7d0, rdata_len=0xbffff7d4, rparam_len=0xbffff7d8) at smbd/lanman.c:773
#11 0x0808eb7b in api_reply (conn=0x8350390, vuid=100, outbuf=0x404c5008 "", data=0x0, params=0x8351b20 "F", tdscnt=0, tpscnt=31,
    mdrcnt=1024, mprcnt=6) at smbd/lanman.c:3569
#12 0x080872ae in reply_trans (conn=0x8350390, inbuf=0x0, outbuf=0x404c5008 "", size=125, bufsize=2920) at smbd/ipc.c:534
#13 0x080b83fd in switch_message (type=37, inbuf=0x404a4008 "", outbuf=0x404c5008 "", size=125, bufsize=2920) at smbd/process.c:767
#14 0x080b855d in construct_reply (inbuf=0x404a4008 "", outbuf=0x404c5008 "", size=125, bufsize=2920) at smbd/process.c:797
#15 0x080b8722 in process_smb (inbuf=0x404a4008 "", outbuf=0x404c5008 "") at smbd/process.c:897
#16 0x080b91e8 in smbd_process () at smbd/process.c:1323
#17 0x081d4720 in main (argc=2, argv=0x1) at smbd/server.c:887
#18 0x420158d4 in __libc_start_main () from /lib/i686/libc.so.6