Processing of tcsh stops due to wait for getting a lock

Issue

• Processing of tcsh stops due to wait for getting a lock for main_arena of malloc.
• According to the following backtrace of tcsh core, it seems that tcsh cannot get the lock for main_arena of malloc though it is trying to get the lock in the fork function.

  (gdb) bt
  #0  0x00000038032e027e in __lll_lock_wait_private () from /data/inc/incoming/014-0916-1680/cocore/libc.so.6
  #1  0x0000003803276c45 in _L_lock_57 () at malloc.c:6205
  #2  0x000000380326f4e3 in ptmalloc_lock_all () at arena.c:290
  #3  0x000000380329a5c6 in __libc_fork () at ../nptl/sysdeps/unix/sysv/linux/fork.c:92
  #4  0x000000000041e554 in inet_addr () at inet_addr.c:93
  #5  0x0000000000414bd9 in inet_addr () at inet_addr.c:93
   :
  #13 0x000000000040f658 in inet_addr () at inet_addr.c:93
  #14 0x000000000040eb5d in inet_addr () at inet_addr.c:93