Building cloop for kernel 2.6.x

[kawazu]

Hi all;...

...just saw that Knoppix 3.6 also features kenel 2.6.7, so cloop seems to be working with 2.6, after all. Anyhow, I am constantly failing to get cloop 2.01 to work with any of the 2.6 kernels by now. Basically, it fails in a reproducible way:


cloop: Initializing cloop v2.01
Unable to handle kernel NULL pointer dereference at virtual address 0000003e
printing eip:
c022bde0
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: cloop snd_mixer_oss msr cpuid sd_mod ds parport_pc lp parport thermal fan button battery ac snd_via82xx snd_ac97_codec snd_pcm snd_timer snd_ page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore usbhid eth13 94 ehci_hcd uhci_hcd usbcore ohci1394 ieee1394 yenta_socket pcmcia_core via_agp agpgart evdev dm_mod via_rhine powernow_k7 freq_table processor
CPU: 0
EIP: 0060:[<c022bde0>] Not tainted
EFLAGS: 00010246 (2.6.7)
EIP is at strlcpy+0x20/0x80
eax: 00000000 ebx: 00000010 ecx: ffffffff edx: 0000003e
esi: c13ae2a8 edi: 0000003e ebp: c13ae2b0 esp: ca12bf0c
ds: 007b es: 007b ss: 0068
Process insmod (pid: 2418, threadinfo=ca12a000 task=caf2e2d0)
Stack: 00000000 cec601dc c13ae2a8 00000000 ca12bfa0 c0274809 00000000 c042c1e0
00000246 0000003e 000007c0 00000000 00000001 ca12bfa0 cec3108f 000000f0
cec601dc cec601dc 00000000 00000000 00000000 00000008 cec61c88 0000000e
Call Trace:
[<c0274809>] register_blkdev+0x79/0x150
[<cec3108f>] cloop_init+0x8f/0x333 [cloop]
[<c0128e23>] sys_init_module+0xf3/0x1c0
[<c0145bcf>] filp_close+0x4f/0x80
[<c0103cfb>] syscall_call+0x7/0xb

Code: f2 ae f7 d1 49 85 db 89 0c 24 74 2e 39 d9 8d 43 ff 89 cb 0f


Any ideas?


Thanks and bye,
Kris

[kelmo]

kawazu,

Apply these two patches (in same order) to your kernel source before compilation:-

http://users.tpg.com.au/sigm/2.6.8-filemap.patch
http://users.tpg.com.au/sigm/2.6.8-cloop.patch

Cloop is now in your kernel, so no need to compile it externally. Just enable it as a module in your config.

I use squashfs instead of cloop now. It has much better compression, but involves some miniroot modifications.

The patches will be there for a couple of days only.

[kawazu]

...
Cloop is now in your kernel, so no need to compile it externally. Just enable it as a module in your config.
...
I use squashfs instead of cloop now. It has much better compression, but involves some miniroot modifications.
...

Okay, thanks for your hint. Actually, I am also into getting Knoppix sort of "remastered" based on squashedfs because I prefer its way of handling file systems, but I needed to access a cloop-compressed image, first.

Thanks and bye,
Kris

[daniel]

...
Cloop is now in your kernel, so no need to compile it externally. Just enable it as a module in your config.
...
I use squashfs instead of cloop now. It has much better compression, but involves some miniroot modifications.
...

Okay, thanks for your hint. Actually, I am also into getting Knoppix sort of "remastered" based on squashedfs because I prefer its way of handling file systems, but I needed to access a cloop-compressed image, first.

Thanks and bye,
Kris

I'm trying to update the kernel of my knoppix based router and pbx PC to 2.6.8 in order to get my webcam connected - but I experienced the same troubles with cloop...

In short: I'd like to get those patches as well, but I can't find them anywhere on the net. Would you please give me an url where I can get the patch?

Bye,
Daniel