Linux coredump

int main(void)
{

    char *ptr = NULL;

    *ptr = 'A'; // This will cause a segmentation fault 

    return 0;

}

root@A9x28:/# ulimit -a | grep core

-c: core file size (blocks)        unlimited

root@A9x28:/# sysctl -a

fs.suid_dumpable = 2

kernel.core_pattern = /data/core

root@A9x28:/# cat /proc/sys/kernel/core_pattern

/data/core

root@A9x28:/# ./create_coredump

Segmentation fault (core dumped)