Re: IPMI hangup in 2.6.6-rc3

[Corey Minyard <minyard@acm.org>]

I cannot figure out from the traceback what is wrong, and I haven't been 
able to reproduce this, even with ipmitool.

What kernel version are you running?  Can you verify that the attached 
patch is in your code?

--- linux-2.6.7-rc3-full/drivers/char/ipmi/ipmi_devintf.c.orig	Wed Jun  9 12:08:23 2004
+++ linux-2.6.7-rc3-full/drivers/char/ipmi/ipmi_devintf.c	Wed Jun  9 12:07:09 2004
@@ -199,7 +199,7 @@ static int handle_send_req(ipmi_user_t  
 			goto out;
 		}
 
-		if (copy_from_user(&msgdata,
+		if (copy_from_user(msgdata,
 				   req->msg.data,
 				   req->msg.data_len))
 		{


If that doesn't help, can you upgrade to 2.6.7-rc3-mm2 and re-try this 
patch?

If that doesn't help, Can you turn on frame pointers and try again?  
This will give a cleaner backtrace.

-Corey

Holger Kiehl wrote:

>On Wed, 16 Jun 2004, Holger Kiehl wrote:
>
>  
>
>>On Wed, 16 Jun 2004, Corey Minyard wrote:
>>
>>    
>>
>>>I missed a part of the patch, here is a new one with the include file changes.
>>>
>>>-Corey
>>>
>>>Corey Minyard wrote:
>>>
>>>      
>>>
>>>>Unfortuantely, that fix has some problems, but it was on the right track.  I
>>>>have a new patch attached; can you try it out?  Also, the kernel interface
>>>>has not changed.  It should be exactly the same as before.
>>>>
>>>>-Corey
>>>>        
>>>>
>>Yes, with this patch it no longer hangs. But ipmitool still crashes
>>
>>    root@apollo:~# ipmitool -I open sdr list
>>    Segmentation fault
>>
>>    
>>
>Just when I send the mail I noticed that each time I call ipmitool I get
>an oops:
>
>Jun 16 18:43:40 apollo kernel:  <1>Unable to handle kernel paging request at virtual address 00100104
>Jun 16 18:43:40 apollo kernel:  printing eip:
>Jun 16 18:43:40 apollo kernel: c013ba4a
>Jun 16 18:43:40 apollo kernel: *pde = 00000000
>Jun 16 18:43:40 apollo kernel: Oops: 0000 [#54]
>Jun 16 18:43:40 apollo kernel: SMP 
>Jun 16 18:43:40 apollo kernel: Modules linked in: bonding
>Jun 16 18:43:40 apollo kernel: CPU:    1
>Jun 16 18:43:40 apollo kernel: EIP:    0060:[<c013ba4a>]    Not tainted
>Jun 16 18:43:40 apollo kernel: EFLAGS: 00010086   (2.6.7) 
>Jun 16 18:43:40 apollo kernel: EIP is at kfree+0x37/0x66
>Jun 16 18:43:40 apollo kernel: eax: 00000001   ebx: ffffffea   ecx: 00100100   edx: c1000000
>Jun 16 18:43:40 apollo kernel: esi: 000015ec   edi: 00000202   ebp: ffffffff   esp: f6dcce84
>Jun 16 18:43:40 apollo kernel: ds: 007b   es: 007b   ss: 0068
>Jun 16 18:43:40 apollo kernel: Process ipmitool (pid: 19786, threadinfo=f6dcc000 task=c2269360)
>Jun 16 18:43:40 apollo kernel: Stack: ffffffea f6dccf6c f6dcceb0 c01dedca f6dccf78 00000000 00000000 ffffffff 
>Jun 16 18:43:40 apollo kernel:        00000000 f7b8f7c8 000015ec 00000500 c000000f f61ebd80 00000282 f7c8be2c 
>Jun 16 18:43:40 apollo kernel:        c02e9600 f6e8b008 f6e8b008 00000000 00000004 f6dccf6c bffff2c0 f6dccf6c 
>Jun 16 18:43:40 apollo kernel: Call Trace:
>Jun 16 18:43:40 apollo kernel:  [<c01dedca>] handle_send_req+0xd3/0xe7
>Jun 16 18:43:40 apollo kernel:  [<c01df205>] ipmi_ioctl+0x427/0x474
>Jun 16 18:43:40 apollo kernel:  [<c015ece7>] sys_select+0x21c/0x482
>Jun 16 18:43:40 apollo kernel:  [<c015e036>] sys_ioctl+0xef/0x223
>Jun 16 18:43:40 apollo kernel:  [<c0104cf1>] sysenter_past_esp+0x52/0x71
>Jun 16 18:43:40 apollo kernel: 
>Jun 16 18:43:40 apollo kernel: Code: 8b 1c 81 8b 03 3b 43 04 73 18 89 74 83 10 83 03 01 57 9d 8b
>
>
>  
>
>>>EIP; c013ba4a No symbols available   <=====
>>>      
>>>
>
>Trace; c01dedca No symbols available
>Trace; c01df205 No symbols available
>Trace; c015ece7 No symbols available
>Trace; c015e036 No symbols available
>Trace; c0104cf1 No symbols available
>
>Code;  c013ba4a No symbols available
>00000000 <_EIP>:
>Code;  c013ba4a No symbols available   <=====
>   0:   8b 1c 81                  mov    (%ecx,%eax,4),%ebx   <=====
>Code;  c013ba4d No symbols available
>   3:   8b 03                     mov    (%ebx),%eax
>Code;  c013ba4f No symbols available
>   5:   3b 43 04                  cmp    0x4(%ebx),%eax
>Code;  c013ba52 No symbols available
>   8:   73 18                     jae    22 <_EIP+0x22>
>Code;  c013ba54 No symbols available
>   a:   89 74 83 10               mov    %esi,0x10(%ebx,%eax,4)
>Code;  c013ba58 No symbols available
>   e:   83 03 01                  addl   $0x1,(%ebx)
>Code;  c013ba5b No symbols available
>  11:   57                        push   %edi
>Code;  c013ba5c No symbols available
>  12:   9d                        popf   
>Code;  c013ba5d No symbols available
>  13:   8b 00                     mov    (%eax),%eax
>
>This must be the reason why ipmitool crashes.
>
>Holger
>  
>