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Old 06-28-2005, 12:06 PM   #1
prital
LQ Newbie
 
Registered: Dec 2004
Posts: 24

Rep: Reputation: 15
kernel stack overflow


Hello,
I run the following user application 'test' :
void main()
{
int n=0;
FILE * fp = fopen ("/log_file" , "w");

while(1)
{
fprintf(fp,"\nStart loop %d", n++);
fflush(fp);
sleep(60);
}
fclose(fp);
}

AFter some hours, I get the following message:

Kernel stack overflow in process c785c000, r1=c785c4c0
NIP: C000FDCC XER: 20000000 LR: C000F404 SP: C785C4C0 REGS: c785c410 TRAP: 0800
Not tainted
MSR: 00009030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DEAR: 206661A7, ESR: 00000000
TASK = c785c000[129] 'test' Last syscall: 54

How can I solve this problem?
Thank you very much.
 
Old 06-29-2005, 05:06 AM   #2
freegianghu
Member
 
Registered: Oct 2004
Location: somewhere in the street
Distribution: Window$
Posts: 192

Rep: Reputation: 30
Re: kernel stack overflow

Quote:
Originally posted by prital
Hello,
I run the following user application 'test' :
void main()
{
int n=0;
FILE * fp = fopen ("/log_file" , "w");

while(1)
{
fprintf(fp,"\nStart loop %d", n++);
fflush(fp);
sleep(60);
}
fclose(fp);
}

AFter some hours, I get the following message:

Kernel stack overflow in process c785c000, r1=c785c4c0
NIP: C000FDCC XER: 20000000 LR: C000F404 SP: C785C4C0 REGS: c785c410 TRAP: 0800
Not tainted
MSR: 00009030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DEAR: 206661A7, ESR: 00000000
TASK = c785c000[129] 'test' Last syscall: 54

How can I solve this problem?
Thank you very much.
Do you think something going wrong with your hardware? (comment out sleep(60); to running test again)

GH
 
Old 06-29-2005, 09:12 AM   #3
lordofring
Member
 
Registered: Feb 2005
Posts: 91

Rep: Reputation: 15
#include <stdio.h>

int main()
{
int i = 0 ;
FILE * fd = fopen("./log", "w") ;

while(1)
{
fprintf(fd, "n is %d\t", i++) ;
fflush(fd) ;
sleep(1) ;
}
fclose(fd) ;

return 0 ;
}


I run the program from yesterday afternoon. I stopped it on the morning. The last number in my log file is 62581. It runs fine in 17 hours. So your code should be fine.
 
  


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