RE: kernel module seg fault

From: manomugdha biswas
Date: Tue Aug 23 2005 - 11:34:47 EST


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@xxxxxxxxx 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@xxxxxxxxxxxxxxx
> [mailto:linux-kernel-owner@xxxxxxxxxxxxxxx] On
> Behalf Of manomugdha
> biswas
> Sent: Tuesday, August 23, 2005 3:13 PM
> To: linux-kernel@xxxxxxxxxxxxxxx
> 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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Manomugdha Biswas






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