diff --git a/Common/Thread/ThreadManager.cpp b/Common/Thread/ThreadManager.cpp
index aea8b7558e..98e0b43a57 100644
--- a/Common/Thread/ThreadManager.cpp
+++ b/Common/Thread/ThreadManager.cpp
@@ -304,7 +304,7 @@ void ThreadManager::EnqueueTask(Task *task) {
 void ThreadManager::EnqueueTaskOnThread(int threadNum, Task *task) {
 	_assert_msg_(task->Type() != TaskType::DEDICATED_THREAD, "Dedicated thread tasks can't be put on specific threads");
 
-	_assert_msg_(threadNum >= 0 && threadNum < (int)global_->threads_.size(), "Bad threadnum or not initialized");
+	_assert_msg_(threadNum >= 0 && threadNum < (int)global_->threads_.size(), "Bad threadnum %d(/%d) or not initialized", threadNum, (int)global_->threads_.size());
 	TaskThreadContext *thread = global_->threads_[threadNum];
 	size_t queueIndex = (size_t)task->Priority();
 
diff --git a/Core/ELF/ElfReader.cpp b/Core/ELF/ElfReader.cpp
index f62fcdda5c..e877d0ac7c 100644
--- a/Core/ELF/ElfReader.cpp
+++ b/Core/ELF/ElfReader.cpp
@@ -68,8 +68,8 @@ bool ElfReader::LoadRelocations(const Elf32_Rel *rels, int numRelocs) {
 	std::atomic<int> numErrors;
 	numErrors.store(0);
 
-	ParallelRangeLoop(&g_threadManager, [&](int l, int h) {
-		for (int r = l; r < h; r++) {
+	{
+		for (int r = 0; r < numRelocs; r++) {
 			u32 info = rels[r].r_info;
 			u32 addr = rels[r].r_offset;
 
@@ -100,10 +100,8 @@ bool ElfReader::LoadRelocations(const Elf32_Rel *rels, int numRelocs) {
 
 			relocOps[r] = Memory::ReadUnchecked_Instruction(addr, true).encoding;
 		}
-	}, 0, numRelocs, 128, TaskPriority::HIGH);
 
-	ParallelRangeLoop(&g_threadManager, [&](int l, int h) {
-		for (int r = l; r < h; r++) {
+		for (int r = 0; r < numRelocs; r++) {
 			VERBOSE_LOG(Log::Loader, "Loading reloc %i  (%p)...", r, rels + r);
 			u32 info = rels[r].r_info;
 			u32 addr = rels[r].r_offset;
@@ -233,7 +231,7 @@ bool ElfReader::LoadRelocations(const Elf32_Rel *rels, int numRelocs) {
 			Memory::WriteUnchecked_U32(op, addr);
 			NotifyMemInfo(MemBlockFlags::WRITE, addr, 4, "Relocation");
 		}
-	}, 0, numRelocs, 128, TaskPriority::HIGH);
+	}
 
 	if (numErrors) {
 		WARN_LOG(Log::Loader, "%i bad relocations found!!!", numErrors.load());
diff --git a/Core/HLE/sceKernelModule.cpp b/Core/HLE/sceKernelModule.cpp
index 268b3ce172..748d8c29bd 100644
--- a/Core/HLE/sceKernelModule.cpp
+++ b/Core/HLE/sceKernelModule.cpp
@@ -1085,6 +1085,14 @@ static PSPModule *__KernelLoadELFFromPtr(const u8 *ptr, size_t elfSize, u32 load
 			// In this case it's definitely not compressed. Added assert below.
 		}
 
+		// Don't accept ELFs over 32MB.
+		if (decryptedSize > 32 * 1024 * 1024) {
+			*error_string = StringFromFormat("ELF/PRX corrupt, unreasonable decrypted size: %d", (u32)decryptedSize);
+			// TODO: Might be the wrong error code.
+			error = SCE_KERNEL_ERROR_FILEERR;
+			return nullptr;
+		}
+
 		// decompress if required.
 		if (isGzip) {
 			_dbg_assert_(Read32(ptr + 0x150) != ELF_MAGIC);
diff --git a/Core/Util/PPGeDraw.cpp b/Core/Util/PPGeDraw.cpp
index a442202f43..d83e90b5f1 100644
--- a/Core/Util/PPGeDraw.cpp
+++ b/Core/Util/PPGeDraw.cpp
@@ -1370,7 +1370,7 @@ bool PPGeImage::Load() {
 	width_ = 0;
 	height_ = 0;
 
-	unsigned char *textureData;
+	unsigned char *textureData = nullptr;
 	int success;
 	if (filename_.empty()) {
 		_dbg_assert_(size_ < MAX_VALID_IMAGE_SIZE);
diff --git a/GPU/Common/TextureReplacer.cpp b/GPU/Common/TextureReplacer.cpp
index 41f9a0cc08..9636d104ac 100644
--- a/GPU/Common/TextureReplacer.cpp
+++ b/GPU/Common/TextureReplacer.cpp
@@ -790,6 +790,7 @@ void TextureReplacer::NotifyTextureDecoded(ReplacedTexture *texture, const Repla
 	_assert_msg_(saveEnabled_, "Texture saving not enabled");
 	_assert_(srcPitch >= 0);
 	_assert_(data);
+	_assert_(level >= 0);
 
 	if (!WillSave(replacedInfo)) {
 		// Ignore.