Dear LVM developers,
I decided to give LVM2 a try but unfortunately it oopses on me.
Software I used:
* Linux kernel 2.5.44
* Device mapper patches from:
http://people.sistina.com/~thornber/patches/2.5-stable
* Device mapper programs from:
ftp://ftp.sistina.com/pub/LVM2/device-mapper/device-mapper-latest.tgz
* LVM2 tools from:
ftp://ftp.sistina.com/pub/LVM2/tools/LVM2.0-latest.tgz
The oops:
Unable to handle kernel NULL pointer dereference at virtual address 00000004
printing eip:
c01f2aca
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0060:[<c01f2aca>] Not tainted
EFLAGS: 00010202
EIP is at device_add+0xea/0x160
eax: cf091560 ebx: c04517d0 ecx: 00000000 edx: 00000000
esi: cf091558 edi: ffffffea ebp: cf091500 esp: cf10def8
ds: 0068 es: 0068 ss: 0068
Process vgchange (pid: 138, threadinfo=cf10c000 task=cfa2e0a0)
Stack: cf091558 00000077 cf091558 00000001 cf0915e1 c016f5b8 cf091558 00000002
c020fa55 0000fe00 00000000 00000000 00000000 cf091400 082480d8 00000002
c0278844 cf091500 c035d01d 00000000 00000000 d28e0000 c027bc78 d28e0022
Call Trace:
[<c016f5b8>] register_disk+0x48/0x170
[<c020fa55>] add_disk+0x75/0x90
[<c0278844>] dm_create+0x124/0x160
[<c027bc78>] create+0x98/0xd0
[<c027c6db>] ctl_ioctl+0xbb/0xf0
[<c027bbe0>] create+0x0/0xd0
[<c0155164>] sys_ioctl+0xf4/0x320
[<c010782b>] syscall_call+0x7/0xb
Code: 89 4a 04 89 11 89 d9 89 46 08 89 40 04 ff 05 d0 17 45 c0 0f
The oops occured when running the command "vgchange -ay". Before that,
the command "vgscan" executed successfully. The system is a Dell laptop
with a 20G LVM volume group created with the LVM1 tools. The metadata
format is "lvm1".
I'd be happy to provide more information or test a patch.
Regards,
Geert Jansen
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