diff --git a/sycl/source/detail/graph_impl.cpp b/sycl/source/detail/graph_impl.cpp
index 6d59b47fda71d..3382e65328322 100644
--- a/sycl/source/detail/graph_impl.cpp
+++ b/sycl/source/detail/graph_impl.cpp
@@ -155,7 +155,7 @@ graph_impl::add(const std::vector<sycl::detail::EventImplPtr> Events) {
   std::vector<std::shared_ptr<node_impl>> Deps;
 
   // Add any nodes specified by event dependencies into the dependency list
-  for (auto Dep : Events) {
+  for (const auto &Dep : Events) {
     if (auto NodeImpl = MEventsMap.find(Dep); NodeImpl != MEventsMap.end()) {
       Deps.push_back(NodeImpl->second);
     } else {
@@ -312,7 +312,7 @@ void exec_graph_impl::createCommandBuffers(sycl::device Device) {
   MPiCommandBuffers[Device] = OutCommandBuffer;
 
   // TODO extract kernel bundle logic from enqueueImpKernel
-  for (auto Node : MSchedule) {
+  for (const auto &Node : MSchedule) {
     sycl::detail::CG::CGTYPE type = Node->MCGType;
     // If the node is a kernel with no special requirements we can enqueue it
     // directly.
@@ -357,7 +357,7 @@ exec_graph_impl::~exec_graph_impl() {
     Event->wait(Event);
   }
 
-  for (auto Iter : MPiCommandBuffers) {
+  for (const auto &Iter : MPiCommandBuffers) {
     if (auto CmdBuf = Iter.second; CmdBuf) {
       pi_result Res = Plugin->call_nocheck<
           sycl::detail::PiApiKind::piextCommandBufferRelease>(CmdBuf);
@@ -609,7 +609,7 @@ void executable_command_graph::finalizeImpl() {
   impl->schedule();
 
   auto Context = impl->getContext();
-  for (auto Device : Context.get_devices()) {
+  for (const auto &Device : Context.get_devices()) {
     bool CmdBufSupport =
         Device.get_info<
             ext::oneapi::experimental::info::device::graph_support>() ==
diff --git a/sycl/source/detail/scheduler/commands.cpp b/sycl/source/detail/scheduler/commands.cpp
index e7e24ecb536f8..d4e46c9d78fed 100644
--- a/sycl/source/detail/scheduler/commands.cpp
+++ b/sycl/source/detail/scheduler/commands.cpp
@@ -2385,7 +2385,7 @@ pi_int32 enqueueImpCommandBufferKernel(
   pi_program PiProgram = nullptr;
 
   auto Kernel = CommandGroup.MSyclKernel;
-  const KernelArgMask *EliminatedArgMask;
+  const KernelArgMask *EliminatedArgMask = nullptr;
   if (Kernel != nullptr) {
     PiKernel = Kernel->getHandleRef();
   } else {
diff --git a/sycl/source/detail/scheduler/scheduler.cpp b/sycl/source/detail/scheduler/scheduler.cpp
index b674c3a820a00..3205d5c407f7a 100644
--- a/sycl/source/detail/scheduler/scheduler.cpp
+++ b/sycl/source/detail/scheduler/scheduler.cpp
@@ -151,7 +151,7 @@ EventImplPtr Scheduler::addCG(
   if (ShouldEnqueue) {
     enqueueCommandForCG(NewEvent, AuxiliaryCmds);
 
-    for (auto StreamImplPtr : Streams) {
+    for (const auto &StreamImplPtr : Streams) {
       StreamImplPtr->flush(NewEvent);
     }