Re: Re: fr1-2.16 patch for 2.6.10 kernel

Peter T. Breuer a écrit :
> "Also sprach denis bonnenfant:"
> 
>>it's exactly on this test :
>>
>>if (mddev->pers->hot_add_disk(mddev,rdev)) {
> 
> 
> OK. That's kind of interesting. Can you print, just before that line,
> the value of
> 
>      mddev
> 
> then in another (different) printk, the value of
> 
>     mddev->pers
> 
> then in anther (different) printk, the value of
> 
>    mddev->pers->hot_add_disk
> 

md 3874: ** mddev=f7fd8d80 rdev=f7ff9980
md 3881: ** mddev=f7fd8d80 rdev=f7ff9980
md 3883: ** mddev=f7fd8d80 rdev=f7ff9980
md 3884: ** mddev->pers=f88afb60
md 3885: ** mddev->pers->hot_add_disk=f88ac388
Unable to handle kernel NULL pointer dereference at virtual address 00000004
  printing eip:
f88ac3d7
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: raid1 bitmap md epic100 usbkbd parport_pc lp parport
CPU:    0
EIP:    0060:[<f88ac3d7>]    Not tainted
EFLAGS: 00010083   (2.6.8-enbd-fr1-debug1)
EIP is at raid1_add_disk+0x4f/0xf8 [raid1]
eax: 00000000   ebx: f798aba0   ecx: c0431cdc   edx: f7989e80
esi: f7ff9980   edi: 00000000   ebp: f7fd8d80   esp: f408bf30
ds: 007b   es: 007b   ss: 0068
Process md0_raid1 (pid: 1950, threadinfo=f408a000 task=f4ff2df0)
Stack: f7ff9980 f7fd8d80 f7ff9980 f7fd8d90 00000000 f7989e80 f88b9d17 f7fd8d80
        f7ff9980 f2f44b00 f408a000 f408bfdc f408a000 f7fd8e0c 00000000 f88ac9f5
        f7fd8d80 f2f44b00 f408a000 f408bfdc f408a000 00000000 f4ff2df0 00000000