net/rtpengine/patches/07-always-dynamically-allocate-buffer-for-kernel-mod.patch

   1 --- a/kernel-module/xt_RTPENGINE.c
   2 +++ b/kernel-module/xt_RTPENGINE.c
   3 @@ -3781,7 +3781,6 @@ static inline ssize_t proc_control_read_
   4         struct rtpengine_table *t;
   5         int err;
   6         enum rtpengine_command cmd;
   7 -       char scratchbuf[512];
   8         size_t readlen, writelen, writeoffset;
   9         int i;
  10
  11 @@ -3823,13 +3822,9 @@ static inline ssize_t proc_control_read_
  12                 return -ERANGE;
  13
  14         // do we need an extra large storage buffer?
  15 -       if (buflen > sizeof(scratchbuf)) {
  16 -               msg.storage = kmalloc(buflen, GFP_KERNEL);
  17 -               if (!msg.storage)
  18 -                       return -ENOMEM;
  19 -       }
  20 -       else
  21 -               msg.storage = scratchbuf;
  22 +       msg.storage = kmalloc(buflen, GFP_KERNEL);
  23 +       if (!msg.storage)
  24 +               return -ENOMEM;
  25
  26         // get our table
  27         inode = file->f_path.dentry->d_inode;
  28 @@ -3942,16 +3937,14 @@ static inline ssize_t proc_control_read_
  29                         goto err_free;
  30         }
  31
  32 -       if (msg.storage != scratchbuf)
  33 -               kfree(msg.storage);
  34 +       kfree(msg.storage);
  35
  36         return buflen;
  37
  38  err_table_free:
  39         table_put(t);
  40  err_free:
  41 -       if (msg.storage != scratchbuf)
  42 -               kfree(msg.storage);
  43 +       kfree(msg.storage);
  44         return err;
  45  }
  46  static ssize_t proc_control_write(struct file *file, const char __user *ubuf, size_t buflen, loff_t *off) {