Hello.

My driver detect and initialise several instances of the device, a FPGA IP core.

When I run the driver, and i do an ifconfig on a specific interface, it works :

Jul 22 15:22:09    5    10     0 men-z087
Jul 22 15:22:09    5    10     0 Vendor .............. 0x1172
Jul 22 15:22:09    5    10     0 Device .............. 0x4d45
Jul 22 15:22:09    5    10     0 Revision ............ 0x0
Jul 22 15:22:09    5    10     0 Interrupt ........... 0xa
Jul 22 15:22:09    5    10     0 MAC address ......... 00c03a 9cc018
Jul 22 15:22:10    5    10     0 men-z087
Jul 22 15:22:10    5    10     0 Vendor .............. 0x1172
Jul 22 15:22:10    5    10     0 Device .............. 0x4d45
Jul 22 15:22:10    5    10     0 Revision ............ 0x0
Jul 22 15:22:10    5    10     0 Interrupt ........... 0xa
Jul 22 15:22:10    5    10     0 Interrupt ........... 0x0
Jul 22 15:22:10    5    10     0 MAC address ......... 00c03a 9cd018
Jul 22 15:22:12    5    14     0 men-z087 : link 0 up (100 BaseT Half Duplex)
Jul 22 15:22:13    5    14     0 men-z087 : link 1 up (100 BaseT Full Duplex)
#
# ifconfig men0
men0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
Jul 22 15:47:21    0    14     0 ifmedia_ioctl(ifp = 8154478,ifr = 824f01c,&dev->bsd_mii.mii_media = 815485c,cmd = 
3223873846)
        address: 00:c0:3a:9c:c0:18
Jul 22 15:47:21    0    14     0 ifmedia_ioctl(ifp = 8154478,ifr = 825281c,&dev->bsd_mii.mii_media = 815485c,cmd = 
3223873846)
        media: Ethernet autoselect (100baseTX)
Jul 22 15:47:21    0    14     0 ifmedia_ioctl(ifp = 8154478,ifr = 825201c,&dev->bsd_mii.mii_media = 815485c,cmd = 
3223873846)
        status: active
#
#
#
# ifconfig men1
men1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
Jul 22 15:47:38    0    14     0 ifmedia_ioctl(ifp = 815e798,ifr = 825981c,&dev->bsd_mii.mii_media = 815eb7c,cmd = 
3223873846)
        address: 00:c0:3a:9c:d0:18
Jul 22 15:47:38    0    14     0 ifmedia_ioctl(ifp = 815e798,ifr = 825981c,&dev->bsd_mii.mii_media = 815eb7c,cmd = 
3223873846)
        media: Ethernet autoselect (100baseTX full-duplex)
Jul 22 15:47:38    0    14     0 ifmedia_ioctl(ifp = 815e798,ifr = 825981c,&dev->bsd_mii.mii_media = 815eb7c,cmd = 
3223873846)
        status: active
#


But if I do an ifconfig without specifying the interface the driver crashes while trying to access the media state:

#
# ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33192
        inet 127.0.0.1 netmask 0xff000000
men0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
Jul 22 16:13:34    0    14     0 ifmedia_ioctl(ifp = 8154478,ifr = 812541293,&dev->bsd_mii.mii_media = 0,cmd = 0)
Jul 22 16:13:34    5    14     0 men-z087 : destroy the driver
Jul 22 16:13:34    5    21     0 run fault pid 790571 tid 2 signal 11 code 1 ip 0xb0328476 tmp/io-pkt-v4-
hcgvarlet12482704615876
        address: 00:c0:3a:9c:c0:18

The debuger show me that the crash is done on the second call of ifmedia_ioctl() because MAC address can be displayed.

Do you have any idea of the source of the bug ?

Thanks.
Guillaume.