From: yamamoto@valinux.co.jp (YAMAMOTO Takashi)

It seems that procfs-task-exe-symlink.patch broke the case of dup_mmap
failure.  ie.  mm->exe_file is copied by memcpy from oldmm and then be fput'ed
by mmput/set_mm_exe_file.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/fork.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN kernel/fork.c~procfs-task-exe-symlink-fix-3 kernel/fork.c
--- a/kernel/fork.c~procfs-task-exe-symlink-fix-3
+++ a/kernel/fork.c
@@ -523,11 +523,12 @@ static struct mm_struct *dup_mm(struct t
 	if (init_new_context(tsk, mm))
 		goto fail_nocontext;
 
+	dup_mm_exe_file(oldmm, mm);
+
 	err = dup_mmap(mm, oldmm);
 	if (err)
 		goto free_pt;
 
-	dup_mm_exe_file(oldmm, mm);
 	mm->hiwater_rss = get_mm_rss(mm);
 	mm->hiwater_vm = mm->total_vm;
 
_