6BETA5 panic with ifconfig nge

[Yuriy N. Shkandybin]

Addon rom gdb
#7  0xc0635164 in trap (frame=
      {tf_fs = -415563768, tf_es = 40, tf_ds = 40, tf_edi = -1040566016, tf_esi = 11, tf_ebp = -415499444, tf_isp = -415499480, tf_ebx = 352, tf_edx = 524320, tf_ecx = 55296, tf_eax = 524320, tf_trapno = 12, tf_err = 0, tf_eip = -1068416848, tf_cs = 32, tf_eflags = 66050, tf_esp = 1000000, tf_ss = 0}) at /usr/src/sys/i386/i386/trap.c:442
#8  0xc061aaca in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#9  0xc05140b0 in m_freem (mb=0x80020) at mbuf.h:420
#10 0xc0471478 in nge_stop (sc=0xc1fa3900) at /usr/src/sys/dev/nge/if_nge.c:2125
#11 0xc04719da in nge_init_locked (sc=0xc1fa3900) at /usr/src/sys/dev/nge/if_nge.c:1685
#12 0xc04732a1 in nge_ioctl (ifp=0xc1fb8400, command=2149607696, data=0xc26f61a0 "nge0")
    at /usr/src/sys/dev/nge/if_nge.c:2018
#13 0xc055a8d4 in ifhwioctl (cmd=0, ifp=0xc1fb8400, data=0xc26f61a0 "nge0", td=0x80020) at /usr/src/sys/net/if.c:1272
#14 0xc055b108 in ifioctl (so=0xc25c2858, cmd=2149607696, data=0xc26f61a0 "nge0", td=0xc24c9a80)
    at /usr/src/sys/net/if.c:1506
#15 0xc0502308 in soo_ioctl (fp=0x80020, cmd=2149607696, data=0xc26f61a0, active_cred=0xc2190c00, td=0xc24c9a80)
    at /usr/src/sys/kern/sys_socket.c:214
#16 0xc04fac95 in ioctl (td=0xc24c9a80, uap=0xe73bfd04) at file.h:258
#17 0xc0635643 in syscall (frame=
      {tf_fs = 59, tf_es = 59, tf_ds = -1078001605, tf_edi = 3, tf_esi = 1, tf_ebp = -1077943256, tf_isp = -415498908, tf_ebx = -1077943312, tf_edx = -2145359600, tf_ecx = 134595453, tf_eax = 54, tf_trapno = 12, tf_err = 2, tf_eip = 1208857439, tf_cs = 51, tf_eflags = 583, tf_esp = -1077943332, tf_ss = 59}) at /usr/src/sys/i386/i386/trap.c:986
#18 0xc061ab1f in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:200
#19 0x00000033 in ?? ()