diff --git a/NEWS b/NEWS
index 1970cdfc567f7..a4a170eccb806 100644
--- a/NEWS
+++ b/NEWS
@@ -15,6 +15,10 @@ PHP                                                                        NEWS
   . Fixed bug GH-17609 (Typo in error message: Dom\NO_DEFAULT_NS instead of
     Dom\HTML_NO_DEFAULT_NS). (nielsdos)
 
+- Opcache:
+  . Fixed bug GH-17654 (Multiple classes using same trait causes function
+    JIT crash). (nielsdos)
+
 - PHPDBG:
   . Partially fixed bug GH-17387 (Trivial crash in phpdbg lexer). (nielsdos)
   . Fix memory leak in phpdbg calling registered function. (nielsdos)
diff --git a/ext/opcache/jit/zend_jit_ir.c b/ext/opcache/jit/zend_jit_ir.c
index 0aea4eab2bff7..dd75c1f37f63d 100644
--- a/ext/opcache/jit/zend_jit_ir.c
+++ b/ext/opcache/jit/zend_jit_ir.c
@@ -9871,9 +9871,9 @@ static int zend_jit_do_fcall(zend_jit_ctx *jit, const zend_op *opline, const zen
 			func = call_info->callee_func;
 		}
 		if ((op_array->fn_flags & ZEND_ACC_TRAIT_CLONE)
-		 && JIT_G(current_frame)
-		 && JIT_G(current_frame)->call
-		 && !JIT_G(current_frame)->call->func) {
+		 && (!JIT_G(current_frame)
+		  || !JIT_G(current_frame)->call
+		  || !JIT_G(current_frame)->call->func)) {
 			call_info = NULL; func = NULL; /* megamorphic call from trait */
 		}
 	}
diff --git a/ext/opcache/tests/jit/gh17654.phpt b/ext/opcache/tests/jit/gh17654.phpt
new file mode 100644
index 0000000000000..59d9205b37f2a
--- /dev/null
+++ b/ext/opcache/tests/jit/gh17654.phpt
@@ -0,0 +1,38 @@
+--TEST--
+GH-17654 (Multiple classes using same trait causes function JIT crash)
+--EXTENSIONS--
+opcache
+--INI--
+opcache.jit=1214
+opcache.jit_buffer_size=16M
+--FILE--
+<?php
+trait TestTrait {
+	public function addUnit(string $x) {
+		self::addRawUnit($this, $x);
+	}
+
+	public function addRawUnit(self $data, string $x) {
+		var_dump($x);
+	}
+}
+
+class Test {
+	use TestTrait;
+}
+
+class Test2 {
+	use TestTrait;
+}
+
+function main()
+{
+	(new Test2)->addUnit("test2");
+	(new Test)->addUnit("test");
+}
+
+main();
+?>
+--EXPECT--
+string(5) "test2"
+string(4) "test"