From 094ad862e7b54e1f0a0fa5338c00fd299de6653b Mon Sep 17 00:00:00 2001
From: Antonio SJ Musumeci <trapexit@spawn.link>
Date: Sun, 11 Dec 2022 14:44:19 -0500
Subject: [PATCH] Fix regression testing for implemented functions

---
 libfuse/lib/fuse_lowlevel.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libfuse/lib/fuse_lowlevel.c b/libfuse/lib/fuse_lowlevel.c
index c78e7dd9..98f622a5 100644
--- a/libfuse/lib/fuse_lowlevel.c
+++ b/libfuse/lib/fuse_lowlevel.c
@@ -1999,6 +1999,8 @@ fuse_ll_process_buf(void                  *data,
   err = ENOSYS;
   if(in->opcode >= FUSE_MAXOP)
     goto reply_err;
+  if(fuse_ll_ops[in->opcode].func == NULL)
+    goto reply_err;
 
   fuse_ll_ops[in->opcode].func(req, in);