kernel module seg fault

kernel module seg fault

[manomugdha biswas]

Hi,
I have written a kernel module and I can load (insmod)
it without any error. But when i run my module it gets
seg fault at interruptible_sleep_on_timeout();

I have used this function in the following way:

DECLARE_WAIT_QUEUE_HEAD(wq);
init_waitqueue_head(&wq);
interruptible_sleep_on_timeout(&wq, 2);

I am using redhat version 9.0 and kernel version
2.4.20-8.
Could you please give some light on this issue?

Manomugdha Biswas


	

	
		
____________________________________________________
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Re: kernel module seg fault

[linux-os (Dick Johnson)]

On Tue, 23 Aug 2005, manomugdha biswas wrote:

> Hi,
> I have written a kernel module and I can load (insmod)
> it without any error. But when i run my module it gets
> seg fault at interruptible_sleep_on_timeout();
>
> I have used this function in the following way:
>
> DECLARE_WAIT_QUEUE_HEAD(wq);
> init_waitqueue_head(&wq);
> interruptible_sleep_on_timeout(&wq, 2);
>
> I am using redhat version 9.0 and kernel version
> 2.4.20-8.
> Could you please give some light on this issue?
>
> Manomugdha Biswas

"seg fault"??  You meen you get a kernel panic? Please
show us what it says. Note you can't sleep with a spin-lock
held.


Cheers,
Dick Johnson
Penguin : Linux version 2.6.12.5 on an i686 machine (5537.79 BogoMips).
Warning : 98.36% of all statistics are fiction.
.
I apologize for the following. I tried to kill it with the above dot :

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Thank you.

RE: kernel module seg fault

[bunnans]

Hi Biswas,

You need to post the complete kernel dump message and body of your
source code.

-Bunnan
 
-----Original Message-----
From: linux-kernel-owner@vger.kernel.org
[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of manomugdha
biswas
Sent: Tuesday, August 23, 2005 3:13 PM
To: linux-kernel@vger.kernel.org
Subject: kernel module seg fault

Hi,
I have written a kernel module and I can load (insmod)
it without any error. But when i run my module it gets
seg fault at interruptible_sleep_on_timeout();

I have used this function in the following way:

DECLARE_WAIT_QUEUE_HEAD(wq);
init_waitqueue_head(&wq);
interruptible_sleep_on_timeout(&wq, 2);

I am using redhat version 9.0 and kernel version
2.4.20-8.
Could you please give some light on this issue?

Manomugdha Biswas


	

	
		
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RE: kernel module seg fault

[manomugdha biswas]

Hi,
This is the code where i am getting this problem. 

static byte4
VNICClientStart(unsigned long arg)
{
  VNICClientCfgCreateInfo_t  clientConfig;
  struct socket        *sock      = NULL;
  ubyte4               status     = 0;
  ubyte4               retryCnt   =
VNIC_CLIENT_MAX_CONN_RETRY_CNT;
  ubyte4               ret        = 0;
  byte4                len        = 0;
  struct net_device    *dev       = NULL;
  VNICConnMap_t        *connMap    = NULL;
  byte4                error      = 0;
  VNICHdrForm_t      vnicHdr;
  VNICVirtMirrIfaceAndServIPList_t  *ifaceIPNode =
NULL;
                                                      
                         
  DECLARE_WAIT_QUEUE_HEAD(wq);
  init_waitqueue_head(&wq);
                                                      
                         
  EnterFunction("VNICClientStart");


   memset(&vnicHdr, 0, sizeof(vnicHdr));
  while (retryCnt) {
        --retryCnt;
                                                      
                       
   if (!retryCnt) {
     return VNIC_CLIENT_SERVER_RESPONSE_TIMEOUT;
   }
                                                      
                         
   /* wait for small */
   interruptible_sleep_on_timeout(&wq, 2);
  } /* end while (retryCnt)*/

  LeaveFunction("VNICClientStart");
  return VNIC_CLIENT_SERVER_SUCCESS; /* for success */
} /* end VNICClientStart() */

I commneted out all the other functionalities of this
function to make it simple but still it is getting
kernel panic.
   
This function gets called when i invoke ioctl() from
my user application and gets kernel panic.

Regards,
Manomugdha



--- bunnans@yahoo.com wrote:

> Hi Biswas,
> 
> You need to post the complete kernel dump message
> and body of your
> source code.
> 
> -Bunnan
>  
> -----Original Message-----
> From: linux-kernel-owner@vger.kernel.org
> [mailto:linux-kernel-owner@vger.kernel.org] On
> Behalf Of manomugdha
> biswas
> Sent: Tuesday, August 23, 2005 3:13 PM
> To: linux-kernel@vger.kernel.org
> Subject: kernel module seg fault
> 
> Hi,
> I have written a kernel module and I can load
> (insmod)
> it without any error. But when i run my module it
> gets
> seg fault at interruptible_sleep_on_timeout();
> 
> I have used this function in the following way:
> 
> DECLARE_WAIT_QUEUE_HEAD(wq);
> init_waitqueue_head(&wq);
> interruptible_sleep_on_timeout(&wq, 2);
> 
> I am using redhat version 9.0 and kernel version
> 2.4.20-8.
> Could you please give some light on this issue?
> 
> Manomugdha Biswas
> 
> 
> 	
> 
> 	
> 		
> ____________________________________________________
> Send a rakhi to your brother, buy gifts and win
> attractive prizes. Log
> on to http://in.promos.yahoo.com/rakhi/index.html
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> To unsubscribe from this list: send the line
> "unsubscribe linux-kernel"
> in
> the body of a message to majordomo@vger.kernel.org
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> Please read the FAQ at  http://www.tux.org/lkml/
> 
> 
> -
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> Please read the FAQ at  http://www.tux.org/lkml/
> 


Manomugdha Biswas


	

	
		
____________________________________________________
Send a rakhi to your brother, buy gifts and win attractive prizes. Log on to http://in.promos.yahoo.com/rakhi/index.html

Re: kernel module seg fault

[Sam Ravnborg]

You do hide a lot of info.
Without the Makefile we cannot see if you compile this in a decent way.
We cannot see the implmentation of EnterFunction() etc.

A quick grep in the kernel tree revealed very few users
of DECLARE_WIATQUEUE_HEAD, and interruptible_sllep_on_timeout() are
deprecated.
So maybe bringing the driver up to modern state would help.

PS. Ever read CodingStyle?

	Sam

On Tue, Aug 23, 2005 at 05:34:21PM +0100, manomugdha biswas wrote:
> Hi,
> This is the code where i am getting this problem. 
> 
> static byte4
> VNICClientStart(unsigned long arg)
> {
>   VNICClientCfgCreateInfo_t  clientConfig;
>   struct socket        *sock      = NULL;
>   ubyte4               status     = 0;
>   ubyte4               retryCnt   =
> VNIC_CLIENT_MAX_CONN_RETRY_CNT;
>   ubyte4               ret        = 0;
>   byte4                len        = 0;
>   struct net_device    *dev       = NULL;
>   VNICConnMap_t        *connMap    = NULL;
>   byte4                error      = 0;
>   VNICHdrForm_t      vnicHdr;
>   VNICVirtMirrIfaceAndServIPList_t  *ifaceIPNode =
> NULL;
>                                                       
>                          
>   DECLARE_WAIT_QUEUE_HEAD(wq);
>   init_waitqueue_head(&wq);
>                                                       
>                          
>   EnterFunction("VNICClientStart");
> 
> 
>    memset(&vnicHdr, 0, sizeof(vnicHdr));
>   while (retryCnt) {
>         --retryCnt;
>                                                       
>                        
>    if (!retryCnt) {
>      return VNIC_CLIENT_SERVER_RESPONSE_TIMEOUT;
>    }
>                                                       
>                          
>    /* wait for small */
>    interruptible_sleep_on_timeout(&wq, 2);
>   } /* end while (retryCnt)*/
> 
>   LeaveFunction("VNICClientStart");
>   return VNIC_CLIENT_SERVER_SUCCESS; /* for success */
> } /* end VNICClientStart() */
> 
> I commneted out all the other functionalities of this
> function to make it simple but still it is getting
> kernel panic.
>    
> This function gets called when i invoke ioctl() from
> my user application and gets kernel panic.
> 
> Regards,
> Manomugdha
> 
> 
> 
> --- bunnans@yahoo.com wrote:
> 
> > Hi Biswas,
> > 
> > You need to post the complete kernel dump message
> > and body of your
> > source code.
> > 
> > -Bunnan
> >  
> > -----Original Message-----
> > From: linux-kernel-owner@vger.kernel.org
> > [mailto:linux-kernel-owner@vger.kernel.org] On
> > Behalf Of manomugdha
> > biswas
> > Sent: Tuesday, August 23, 2005 3:13 PM
> > To: linux-kernel@vger.kernel.org
> > Subject: kernel module seg fault
> > 
> > Hi,
> > I have written a kernel module and I can load
> > (insmod)
> > it without any error. But when i run my module it
> > gets
> > seg fault at interruptible_sleep_on_timeout();
> > 
> > I have used this function in the following way:
> > 
> > DECLARE_WAIT_QUEUE_HEAD(wq);
> > init_waitqueue_head(&wq);
> > interruptible_sleep_on_timeout(&wq, 2);
> > 
> > I am using redhat version 9.0 and kernel version
> > 2.4.20-8.
> > Could you please give some light on this issue?
> > 
> > Manomugdha Biswas
> > 
> > 
> > 	
> > 
> > 	
> > 		
> > ____________________________________________________
> > Send a rakhi to your brother, buy gifts and win
> > attractive prizes. Log
> > on to http://in.promos.yahoo.com/rakhi/index.html
> > -
> > To unsubscribe from this list: send the line
> > "unsubscribe linux-kernel"
> > in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at 
> > http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at  http://www.tux.org/lkml/
> > 
> > 
> > -
> > To unsubscribe from this list: send the line
> > "unsubscribe linux-kernel" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at 
> > http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at  http://www.tux.org/lkml/
> > 
> 
> 
> Manomugdha Biswas
> 
> 
> 	
> 
> 	
> 		
> ____________________________________________________
> Send a rakhi to your brother, buy gifts and win attractive prizes. Log on to http://in.promos.yahoo.com/rakhi/index.html
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/