Re: Re: fr1-2.16 patch for 2.6.10 kernel

denis bonnenfant a écrit :
> [email protected] a écrit :
> 
>> Selon [email protected]:
>>
>>
>>> Selon "Peter T. Breuer" <[email protected]>:
>>>
>>>
>>>> "Also sprach denis bonnenfant:"
>>>>
>>>>> I compiled and tested a 2.6.10-fr1 kernel, without any problem.
>>>>> I'm going to stress it a little bit more...
> 
> 
> Well, bad luck, 2.6.10 is broken with my hardware (DELL SC600 servers 
> with CERC megaraid controller)! megaraid driver has changed, and now it 
> doesn't necognise my hardware anymore !
> So I'm going back to 2.6.8 !
> 
> I backported some of the changes made to 2.6.8.
> 
> I'm going to test it now.

this is the result of a

mdadm --manage /dev/md0 --fail /dev/sda1
... some copy md0 ...
mdadm --manage /dev/md0 --add /dev/sda1
.....
I don't wait the end of reconstruction
....
mdadm --manage /dev/md0 --fail /dev/sda1
mdadm --manage /dev/md0 --add /dev/sda1

and then it crashes !


md0: notifying dev 800002 it is now in array
md0: set repair bit to 1 on superblock f7cc1880
md0: md_check_recovery 2: cleared recovery bits on sb f7cc1880
md0: md_check_recovery 2: restored repair bit on sb f7cc1880
Unable to handle kernel NULL pointer dereference at virtual address 00000004
  printing eip:
f88ac3d7
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: raid1 md epic100 usbkbd parport_pc lp parport
CPU:    0
EIP:    0060:[<f88ac3d7>]    Not tainted
EFLAGS: 00010002   (2.6.8-enbd-fr1)
EIP is at raid1_add_disk+0x4f/0xf8 [raid1]
eax: 00000000   ebx: f6985228   ecx: 00000001   edx: f7cd0e80
esi: d0d64540   edi: 00000001   ebp: f7cc1880   esp: d32e1f30
ds: 007b   es: 007b   ss: 0068
Process md0_raid1 (pid: 1658, threadinfo=d32e0000 task=d34f5410)
Stack: d0d64540 f7cc1880 d2e9c800 f7cc1890 00000000 f7cd0e80 f88b9c80 
f7cc1880
        d0d64540 d2975780 d32e0000 d32e1fdc d32e0000 f7cc190c 00000000 
f88ac9f5
        f7cc1880 d2975780 d32e0000 d32e1fdc d32e0000 00000000 d34f5410 
0243d580
Call Trace:
  [<f88b9c80>] md_check_recovery+0x288/0x3b8 [md]
  [<f88ac9f5>] raid1d+0x19/0x1b8 [raid1]
  [<f88b854f>] md_thread+0x14f/0x188 [md]
  [<f88b8400>] md_thread+0x0/0x188 [md]
  [<c01145a8>] autoremove_wake_function+0x0/0x40
  [<c01145a8>] autoremove_wake_function+0x0/0x40
  [<c0102245>] kernel_thread_helper+0x5/0xc
Code: 8b 50 04 8b 46 14 8b 40 04 8b 40 30 39 42 30 75 5f 83 3b 00
  <6>note: md0_raid1[1658] exited with preempt_count 1

Tomorrow, i'm trying to reproduce it.