[Squashfs-devel] Kernel panic at boot

[Lluis <xs...@gm...>]

Hi all!

I've been having some fun with an embedded device, with squashfs as its root
fs, but now that i've upgraded kernel and squashfs, the system crashes at
bootup

Some details:
Device: AP with an WL11000 board (linuxAP-eh)
Kernel: 2.4.20 -> 2.6.{6,8.1}
Squashfs: 1.3r2 -> 2.0r2

The error i get on bootup:
VFS: Cannot open root device "<NULL>" or unknown-block(31,0)
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on unknown-block(31,0)

And some messages i put to debug the 2.6.6 bootup process (very ugly... :P)

DEBUG: do_mount: do_mount(/dev/root, /root, squashfs, 32769, 0)
DEBUG: do_add_mount 3
DEBUG: do_kern_mount: do_kern_mount(squashfs, 32769, /dev/root, 0)
DEBUG: do_kern_mount: 5
DEBUG: get_sb_bdev: 1
DEBUG: fs/block_dev.c: 557: do_open
DEBUG: fs/block_dev.c: 562
DEBUG: get_sb_bdev: fffffffa = open_bdev_excl(/dev/root, 32769,
fs_type->squashfs)
DEBUG: do_kern_mount: type->get_sb(type->squashfs, 32769, /dev/root,
0)=fffffffa
DEBUG: do_mount: do_add_mount=-6
DEBUG: mount_block_root: do_mount_root(/dev/root, squashfs, 32769, 0)=-6
VFS: Cannot open root device "<NULL>" or unknown-block(31,0)
Please append a correct "root=" boot option
DEBUG: fs_names=squashfs
Kernel panic: VFS: Unable to mount root fs on unknown-block(31,0)

Does anybody have a hint on this?

Thanks a lot!
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