[BProc] child processes dying

[Luke P. <lop...@wi...>]

Hello,

I've noticed some daemons having trouble running on bproc nodes, usually
complaining about child processes dying.  I'm running pre6 with 2.6.7,
libraries via an NFS mount.

Attached is a simple pthreads test program.  It runs fine on the master,
but segfaults when running via bpsh.  I've attached the last few lines
of an strace of the test program.  Looks fishy.

Would others mind trying this test program, and commenting on their
findings?

Thanks
-Luke

clone(child_stack=0x40817b08,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|CLONE_DETACHED, parent_tidptr=0x40817bf8, {entry_number:6, base_addr:0x40817bb0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}, child_tidptr=0x40817bf8) = -1 EFAULT (Bad address)
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++



#include <iostream>
#include <pthread.h>
#include <stdlib.h>

using namespace std;

void *task(void *arg) {
  for (;;) { 
    cout << (char *)arg;
    cout.flush();
  }
  return NULL;
}

int main() {
  pthread_t t1;
  if ( pthread_create(&t1, NULL, task, (void *)"1") != 0 ) {
    cout << "pthread_create() error" << endl;
    abort();
  }
  task((void *)"2");
}