switch prctl_set_mm_exe_file() to fget_light()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 4 insertions, 4 deletions

diff --git a/kernel/sys.c b/kernel/sys.c
index 241507f23ec..0cb4283df88 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1790,9 +1790,9 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
 {
         struct file *exe_file;
         struct dentry *dentry;
-        int err;
+        int err, fput_needed;
 
-        exe_file = fget(fd);
+        exe_file = fget_light(fd, &fput_needed);
         if (!exe_file)
                 return -EBADF;
 
@@ -1839,12 +1839,12 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
                 goto exit_unlock;
 
         err = 0;
-        set_mm_exe_file(mm, exe_file);
+        set_mm_exe_file(mm, exe_file);  /* this grabs a reference to exe_file */
 exit_unlock:
         up_write(&mm->mmap_sem);
 
 exit:
-        fput(exe_file);
+        fput_light(exe_file, fput_needed);
         return err;
 }