Hi,

I am starting to write linux kernel mode code. I am on Ubuntu 20.04. I have written the following code

The line DynPage[i]=0; //CRASH causes a crash. Can you please guide on the reason for the crash?

Thanks a lot in advance,

Lloyd

#pragma GCC push_options
#pragma GCC optimize("O0")
void ClearMem(void)
{
    unsigned int* DynPage=NULL;
    unsigned int i=0;
    DynPage=kmalloc(1024*16,GFP_KERNEL); 
    if(DynPage!=NULL)
    {
        DynPage[i]=0; //CRASH
    }
    kfree(DynPage);
    DynPage=NULL;
    return;
}
#pragma GCC pop_options