Regarding segmantation violation

[Tito]

On Friday 01 June 2007 14:47:08 you wrote:
> Used calloc and bzero and tried , but couldn't get resolved .
> 
>  
> 
> Thanks & Regards ,
> 
> Sekhar Pedamallu
BTW.: your code works fine here on my box x86.

Why are you thinking that the SEGV happens at malloc/memset/free stage?

munmap(0x30017000, 64)                  = 0
gettimeofday({18672, 446432}, NULL)     = 0
brk(0)                                  = 0x10012000
brk(0x10033000)                         = 0x10033000
gettimeofday({18672, 454484}, NULL)     = 0
fstat64(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(204, 46), ...}) = 0
ioctl(1, TCGETS, {B115200 opost isig icanon echo ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) 

gettimeofday({18755, 138465}, NULL)     = 0
brk(0)                                  = 0x10012000
brk(0x10033000)                         = 0x10033000
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Process 267 detached


Looks to me that it happens at the stage of the second gettimeofday call....
Did you try the same code without all this timer stuff

int main(int argc, char **argv)
{
	free(memset(malloc(10000), 0, 10000));
	return 0
}

Hope this helps.

Ciao,
Tito



> From: Tito [mailto:farmatito at tiscali.it] 
> Sent: Friday, June 01, 2007 6:05 PM
> To: busybox at busybox.net; sekhar.pedamallu at patni.com
> Subject: Re: Regarding segmantation violation
> 
>  
> 
> On Friday 01 June 2007 13:21:09 Sekhar Pedamallu wrote:
> 
> for(l_iIndex = 0; l_iIndex < l_iCount ; l_iIndex++)
> 
> {
> 
> l_pcTemp = (char *)malloc(l_iSize); 
> 
> if(NULL == l_pcTemp)
> 
> {
> 
> printf("Memory allocation failed \n"); 
> 
> exit(1);
> 
> }
> 
> // printf(" Start Address %p \n",l_pcTemp);
> 
> // printf(" End Address %p \n",l_pcTemp+l_iSize-1); 
> 
> ====> memset(l_pcTemp,0,l_iSize); maybe memset(l_pcTemp,0,strlen(l_pcTemp));
> will work better???
> 
> free(l_pcTemp);
> 
> } 
> 
> BTW: you can use calloc() instead of malloc() + memset()
> 
> Ciao,
> 
> Tito
> 
> 
> http://www.patni.com
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