[Openipmi-developer] Re: [BUG] 2.6.6-rc2 kernel OOPS

[Corey M. <cmi...@mv...>]

Thanks for the bug report.  I looked at the code in question and I 
couldn't find anything that looks like it could be a problem.  Can you 
reproduce this?

-Corey

Louis Zhuang wrote:

>Dear Corey,
>	That's a oops I found in recent 2.6 kernel. I just wonder if it is a
>bug in IPMI driver or general kernel. 
> 
>--------------------------------------------------------------------- 
>Unable to handle kernel NULL pointer dereference at virtual address
>00000000
> printing eip:
>c01457a9
>*pde = 00000000
>Oops: 0000 [#2]
>PREEMPT SMP 
>CPU:    0
>EIP:    0060:[<c01457a9>]    Tainted: P  
>EFLAGS: 00210086   (2.6.6-rc2) 
>EIP is at kfree+0x39/0x70
>eax: 00000000   ebx: ffffffea   ecx: db245000   edx: 00000000
>esi: 01030000   edi: 00200206   ebp: da87be60   esp: da87be4c
>ds: 007b   es: 007b   ss: 0068
>Process lt-ipmi_ui (pid: 7348, threadinfo=da87a000 task=d4bb5910)
>Stack: bffff020 00000005 ffffffea da87bf60 da87be8c da87bec8 c02507da
>01030000 
>       da87be8c 0812fb98 da87bf6c 00000000 00000000 ffffffff 00000000
>01030000 
>       00000002 0800000f d4d60000 d4d60000 da87beac 00000000 da87bf60
>da87bec8 
>Call Trace:
> [<c02507da>] handle_send_req+0x10a/0x120
> [<c0202297>] copy_from_user+0x47/0x70
> [<c0250d74>] ipmi_ioctl+0x584/0x600
> [<c016f5e0>] __pollwait+0x0/0xb0
> [<c016eed7>] sys_ioctl+0x127/0x2b0
> [<c010521f>] syscall_call+0x7/0xb
>
>Code: 8b 1c 82 8b 03 3b 43 04 73 15 89 74 83 10 ff 03 57 9d 8b 5d 
>
>  
>