Re: 2.5.6-pre3 Kernel panic: VFS: Unable to mount root fs on 03:02

From: Voluspa (voluspa@bigfoot.com)
Date: Thu Mar 07 2002 - 04:21:50 EST


On Thu, 7 Mar 2002 03:42:32 -0500 (EST)
Alexander Viro <viro@math.psu.edu> wrote:

> > mount() -> -14
> > VFS: Cannot open root device "302" or 03:02
>
> Bloody hell... 14 is EFAULT. And that - from sys_mount() called by

Hey, you're talking to pure user land here (but I guess it's meant for the other kernel hackers :-)

> task that has KERNEL_DS as addr_limit. What options do you pass to kernel
> and what filesystems are compiled in?

No options at all, except what lilo provides:

loke:loke:/proc$ cat cmdline
BOOT_IMAGE=2.4-Linux-test ro root=302 ramdisk=0

(Exchange 2.4-Linux-test with 2.5-Linux-test)

File systems compiled in:

loke:loke:/proc$ cat filesystems
nodev rootfs
nodev bdev
nodev proc
nodev sockfs
nodev tmpfs
nodev pipefs
nodev binfmt_misc
        ext2
        minix
        msdos
        vfat
        iso9660
nodev nfs

Not changed in 2.5 (preempt enabled there shouldn't make a difference)

> Actually, adding printk("%s\n", p);
> in the same place might give some hints...

I interpret that as printk("mount() -> %d\n", err); can be swapped with printk("%s\n", p); and I'll do that right away. Last compile, then I must rush to work.

Regards,
Mats Johannesson
Sweden
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