rtpengine: add patch fixing compilation warning for kernel module

Add patch fixing compilation warning for kernel module.
Always dynamically allocate buffer for proc_control_read_write.
Fix compilation warning:
/builder/shared-workdir/build/build_dir/target-arm_cortex-a8+vfpv3_musl_eabi/rtpengine-no-transcode/rtpengine-mr10.5.2.6/kernel-module/xt_RTPENGINE.c: In function 'proc_control_read_write':
/builder/shared-workdir/build/build_dir/target-arm_cortex-a8+vfpv3_musl_eabi/rtpengine-no-transcode/rtpengine-mr10.5.2.6/kernel-module/xt_RTPENGINE.c:3573:1: error: the frame size of 1272 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
 3573 | }
      | ^

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/net/rtpengine/patches/07-always-dynamically-allocate-buffer-for-kernel-mod.patch b/net/rtpengine/patches/07-always-dynamically-allocate-buffer-for-kernel-mod.patch
new file mode 100644 (file)
index 0000000..6f42c17
--- /dev/null
+++ b/net/rtpengine/patches/07-always-dynamically-allocate-buffer-for-kernel-mod.patch
@@ -0,0 +1,36 @@
+--- a/kernel-module/xt_RTPENGINE.c
++++ b/kernel-module/xt_RTPENGINE.c
+@@ -3455,14 +3455,11 @@ static inline ssize_t proc_control_read_
+       struct inode *inode;
+       uint32_t id;
+       struct rtpengine_table *t;
+-      struct rtpengine_message msgbuf;
+       struct rtpengine_message *msg;
+       int err;
+ 
+       if (buflen < sizeof(*msg))
+               return -EIO;
+-      if (buflen == sizeof(*msg))
+-              msg = &msgbuf;
+       else { /* > */
+               msg = kmalloc(buflen, GFP_KERNEL);
+               if (!msg)
+@@ -3559,16 +3556,14 @@ static inline ssize_t proc_control_read_
+                       goto out;
+       }
+ 
+-      if (msg != &msgbuf)
+-              kfree(msg);
++      kfree(msg);
+ 
+       return buflen;
+ 
+ err:
+       table_put(t);
+ out:
+-      if (msg != &msgbuf)
+-              kfree(msg);
++      kfree(msg);
+       return err;
+ }
+ static ssize_t proc_control_write(struct file *file, const char __user *ubuf, size_t buflen, loff_t *off) {