Kernel doesn't create core for threads

[Zdenek Kabelac]

Hello

Looks to me like the latest 2.4.5-pre1 is not creating
coredump for multithreaded aplications:

----
$ ulimit  -a
core file size (blocks)     unlimited
data seg size (kbytes)      unlimited
file size (blocks)          unlimited
max locked memory (kbytes)  unlimited
max memory size (kbytes)    unlimited
open files                  1024
pipe size (512 bytes)       8
stack size (kbytes)         8192
cpu time (seconds)          unlimited
max user processes          6144
virtual memory (kbytes)     unlimited

$ ./testcore 
Segmentation fault

--- test program --

#include <stdio.h>
#include <pthread.h>

#define TASKS 10

void* thread(void* arg)
{
    printf("yuk %s\n", 0xffff0000);
    return 0;
}

int main(int argc, char *argv[])
{
    pthread_t task[TASKS];
    void* ret;
    int i = 0;
    for(i = 0; i < TASKS; i++)
	pthread_create(&task[i], NULL, thread, 0);
    for(i = 0; i < TASKS; i++)
	pthread_join(task[i], &ret);

    return 0;
}