diff --git a/userspace/programs/DynamicLoader/main.cpp b/userspace/programs/DynamicLoader/main.cpp
index dc7ed670..0459a79c 100644
--- a/userspace/programs/DynamicLoader/main.cpp
+++ b/userspace/programs/DynamicLoader/main.cpp
@@ -4,6 +4,8 @@
 #include <LibELF/Types.h>
 #include <LibELF/Values.h>
 
+#include <BAN/Atomic.h>
+
 #include <dlfcn.h>
 #include <fcntl.h>
 #include <limits.h>
@@ -210,8 +212,34 @@ static size_t s_loaded_file_count = 0;
 
 static const char* s_ld_library_path = nullptr;
 
+static BAN::Atomic<pthread_t> s_global_locker = 0;
+static uint32_t s_global_lock_depth = 0;
+
 constexpr uintptr_t SYM_NOT_FOUND = -1;
 
+static void lock_global_lock()
+{
+	const pthread_t tid = syscall<>(SYS_PTHREAD_SELF);
+
+	pthread_t expected = 0;
+	while (!s_global_locker.compare_exchange(expected, tid))
+	{
+		if (expected == tid)
+			break;
+		syscall<>(SYS_YIELD);
+		expected = 0;
+	}
+
+	s_global_lock_depth++;
+}
+
+static void unlock_global_lock()
+{
+	s_global_lock_depth--;
+	if (s_global_lock_depth == 0)
+		s_global_locker.store(false);
+}
+
 static uint32_t elf_hash(const char* name)
 {
 	uint32_t h = 0, g;
@@ -725,11 +753,24 @@ extern "C"
 __attribute__((used))
 uintptr_t resolve_symbol(const LoadedElf& elf, uintptr_t plt_entry)
 {
-	if (elf.pltrel == DT_REL)
-		return handle_relocation(elf, *reinterpret_cast<ElfNativeRelocation*>(elf.jmprel + plt_entry), true);
-	if (elf.pltrel == DT_RELA)
-		return handle_relocation(elf, reinterpret_cast<ElfNativeRelocationA*>(elf.jmprel)[plt_entry], true);
-	print_error_and_exit("invalid value for DT_PLTREL", 0);
+	lock_global_lock();
+
+	uintptr_t result;
+	switch (elf.pltrel)
+	{
+		case DT_REL:
+			result = handle_relocation(elf, *reinterpret_cast<ElfNativeRelocation*>(elf.jmprel + plt_entry), true);
+			break;
+		case DT_RELA:
+			result = handle_relocation(elf, reinterpret_cast<ElfNativeRelocationA*>(elf.jmprel)[plt_entry], true);
+			break;
+		default:
+			print_error_and_exit("invalid value for DT_PLTREL", 0);
+	}
+
+	unlock_global_lock();
+
+	return result;
 }
 
 static LoadedElf& load_elf(const char* path, int fd);
@@ -1022,9 +1063,16 @@ static bool load_symbol_table(LoadedElf& elf)
 
 static LoadedElf& load_elf(const char* path, int fd)
 {
+	lock_global_lock();
+
 	for (size_t i = 0; i < s_loaded_file_count; i++)
+	{
 		if (strcmp(s_loaded_files[i].path, path) == 0)
+		{
+			unlock_global_lock();
 			return s_loaded_files[i];
+		}
+	}
 
 	if (fd == -1 && (fd = syscall(SYS_OPENAT, AT_FDCWD, path, O_RDONLY)) < 0)
 		print_error_and_exit("could not open library", fd);
@@ -1167,6 +1215,8 @@ static LoadedElf& load_elf(const char* path, int fd)
 
 	load_symbol_table(elf);
 
+	unlock_global_lock();
+
 	return elf;
 }