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Old 12-05-2008, 05:31 AM   #1
Niraj Kulkarni
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Registered: May 2008
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Kernel panic: VFS: Unable to mount root fs on 1f:00


Hi ,
I am working on ARM processor. Linux is already ported on it , works fine.
I am interfaceing USB Modem (TATAindicom). That needs PPP support to be there in kernel.So I had added that using "make menuconfig"
Network device support-> PPP support also
Network device support-> PPP support for async serial ports and
Network device support-> PPP support for sync tty ports
Along with
USB support -> USB Modem (CDC ACM) support

As my USB Modem is a CDC-ACM device .

But whenever I do the above selection I get a kernel panic , here is the log :
: 800CC800-B13A4FFF [VIRTUAL 800CC800-B13A4FFF] (RO)
RAMDISK driver initialized: 16 RAM disks of 1024K size 1024 blocksize
loop: loaded (max 8 devices)
PPP generic driver version 2.4.2
PPP MPPE compression module registered
Amd/Fujitsu Extended Query Table v1.1 at 0x0040
number of CFI chips: 1
cfi_cmdset_0002: Disabling fast programming due to code brokenness.
Creating 6 MTD partitions on "Physically mapped flash":
0x00000000-0x00020000 : "boot (128K)"
0x00020000-0x000cc800 : "kernel (700K)"
mtd: partition "kernel (700K)" doesn't end on an erase block -- force read-only
0x000cc800-0x0040c800 : "romfs (3000K)"
mtd: partition "romfs (3000K)" extends beyond the end of device "Physically mapped flash" -- size truncated to 0x333800
mtd: partition "romfs (3000K)" doesn't start on an erase block boundary -- force read-only
0x00002000-0x00004000 : "environment (8K)"
0x00000000-0x0040c800 : "complete (4M)"
mtd: partition "complete (4M)" extends beyond the end of device "Physically mapped flash" -- size truncated to 0x400000
0x00000000-0x00400000 : "<NULL>"
usb.c: registered new driver hub
usb.c: registered new driver hiddev
usb.c: registered new driver hid
hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech@suse.cz>
hid-core.c: USB HID support drivers
host/usb-ohci.c: USB OHCI at membase 0xf0100000, IRQ 13
host/usb-ohci.c: usb-s3c2510, usb-ohci
PCI Pool: allocated 76 bytes
PCI Pool: allocated 76 bytes
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
usb.c: registered new driver acm
acm.c: v0.21:USB Abstract Control Model driver for USB modems and ISDN adapters
usb.c: registered new driver audio
audio.c: v1.0.0:USB Audio Class driver
Linux video capture interface: v1.00
wis0: Video RAM: 0x600000 (3145728 bytes)
wis0: Video RAM includes 0x100000 bytes of Audio Ram at 0x800000
Audio: Non-blocking, Video: Non-blocking
Begin Encoder Diag Test Niraj
Encoder Diag Test Result = 0
EncoderRegisterFrameCallback: Entry:0xf4210, Data:0x294000 (1 entries)
AudioRegisterFrameCallback: Entry:0xf41a0, Data:0x294000 (1 entries)
wis0: WIS GO7007SB: Multiformat Multimedia Encoder unit 0
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 1024)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Kernel panic: VFS: Unable to mount root fs on 1f:00



If the selection of
Network device support-> PPP support for async serial ports and
Network device support-> PPP support for sync tty ports
is removed , no panic is seen , but my pppd fail to establish Serial connection.
Please help..
 
  


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