diff --git a/src/core/libraries/kernel/file_system.cpp b/src/core/libraries/kernel/file_system.cpp
index c4f1e479..d0ffa21c 100644
--- a/src/core/libraries/kernel/file_system.cpp
+++ b/src/core/libraries/kernel/file_system.cpp
@@ -502,7 +502,7 @@ s32 PS4_SYSV_ABI sceKernelFsync(int fd) {
 s32 PS4_SYSV_ABI posix_fsync(int fd) {
     s32 result = sceKernelFsync(fd);
     if (result < 0) {
-        LOG_ERROR(Kernel_Pthread, "posix_fstat: error = {}", result);
+        LOG_ERROR(Kernel_Pthread, "posix_fsync: error = {}", result);
         ErrSceToPosix(result);
         return -1;
     }
diff --git a/src/core/libraries/kernel/memory.cpp b/src/core/libraries/kernel/memory.cpp
index 13b3a9f4..4d55fc2a 100644
--- a/src/core/libraries/kernel/memory.cpp
+++ b/src/core/libraries/kernel/memory.cpp
@@ -10,6 +10,7 @@
 #include "common/singleton.h"
 #include "core/file_sys/fs.h"
 #include "core/libraries/error_codes.h"
+#include "core/libraries/kernel/kernel.h"
 #include "core/libraries/kernel/memory.h"
 #include "core/libraries/libs.h"
 #include "core/linker.h"
@@ -495,6 +496,16 @@ int PS4_SYSV_ABI sceKernelMunmap(void* addr, size_t len) {
     return SCE_OK;
 }
 
+int PS4_SYSV_ABI posix_munmap(void* addr, size_t len) {
+    int result = sceKernelMunmap(addr, len);
+    if (result < 0) {
+        LOG_ERROR(Kernel_Pthread, "posix_munmap: error = {}", result);
+        ErrSceToPosix(result);
+        return -1;
+    }
+    return result;
+}
+
 void RegisterMemory(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("rTXw65xmLIA", "libkernel", 1, "libkernel", 1, 1, sceKernelAllocateDirectMemory);
     LIB_FUNCTION("B+vc2AO2Zrc", "libkernel", 1, "libkernel", 1, 1,
@@ -517,6 +528,8 @@ void RegisterMemory(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("mL8NDH86iQI", "libkernel", 1, "libkernel", 1, 1, sceKernelMapNamedFlexibleMemory);
     LIB_FUNCTION("aNz11fnnzi4", "libkernel", 1, "libkernel", 1, 1,
                  sceKernelAvailableFlexibleMemorySize);
+    LIB_FUNCTION("aNz11fnnzi4", "libkernel_avlfmem", 1, "libkernel", 1, 1,
+                 sceKernelAvailableFlexibleMemorySize);
     LIB_FUNCTION("IWIBBdTHit4", "libkernel", 1, "libkernel", 1, 1, sceKernelMapFlexibleMemory);
     LIB_FUNCTION("p5EcQeEeJAE", "libkernel", 1, "libkernel", 1, 1,
                  _sceKernelRtldSetApplicationHeapAPI);
@@ -537,6 +550,8 @@ void RegisterMemory(Core::Loader::SymbolsResolver* sym) {
 
     LIB_FUNCTION("BPE9s9vQQXo", "libkernel", 1, "libkernel", 1, 1, posix_mmap);
     LIB_FUNCTION("BPE9s9vQQXo", "libScePosix", 1, "libkernel", 1, 1, posix_mmap);
+    LIB_FUNCTION("UqDGjXA5yUM", "libkernel", 1, "libkernel", 1, 1, posix_munmap);
+    LIB_FUNCTION("UqDGjXA5yUM", "libScePosix", 1, "libkernel", 1, 1, posix_munmap);
 }
 
 } // namespace Libraries::Kernel
diff --git a/src/core/libraries/kernel/threads/pthread.cpp b/src/core/libraries/kernel/threads/pthread.cpp
index 28e2be06..18ddcb9b 100644
--- a/src/core/libraries/kernel/threads/pthread.cpp
+++ b/src/core/libraries/kernel/threads/pthread.cpp
@@ -421,29 +421,27 @@ int PS4_SYSV_ABI scePthreadGetprio(PthreadT thread, int* priority) {
     return 0;
 }
 
-int PS4_SYSV_ABI scePthreadSetprio(PthreadT thread, int prio) {
+int PS4_SYSV_ABI posix_pthread_setprio(PthreadT thread, int prio) {
     SchedParam param;
-    int ret;
 
     param.sched_priority = prio;
 
     auto* thread_state = ThrState::Instance();
     if (thread == g_curthread) {
         g_curthread->lock.lock();
-    } else if (int ret = thread_state->FindThread(thread, /*include dead*/ 0)) {
+    } else if (int ret = thread_state->FindThread(thread, /*include dead*/ 0); ret != 0) {
         return ret;
     }
 
     if (thread->attr.sched_policy == SchedPolicy::Other || thread->attr.prio == prio) {
         thread->attr.prio = prio;
-        ret = 0;
     } else {
         // TODO: _thr_setscheduler
         thread->attr.prio = prio;
     }
 
     thread->lock.unlock();
-    return ret;
+    return 0;
 }
 
 enum class PthreadCancelState : u32 {
@@ -495,6 +493,8 @@ void RegisterThread(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("OxhIB8LB-PQ", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_create);
     LIB_FUNCTION("Jmi+9w9u0E4", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_create_name_np);
     LIB_FUNCTION("lZzFeSxPl08", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_setcancelstate);
+    LIB_FUNCTION("a2P9wYGeZvc", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_setprio);
+    LIB_FUNCTION("FIs3-UQT9sg", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_getschedparam);
     LIB_FUNCTION("6XG4B33N09g", "libScePosix", 1, "libkernel", 1, 1, sched_yield);
 
     // Posix-Kernel
@@ -517,7 +517,7 @@ void RegisterThread(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("T72hz6ffq08", "libkernel", 1, "libkernel", 1, 1, posix_pthread_yield);
     LIB_FUNCTION("EI-5-jlq2dE", "libkernel", 1, "libkernel", 1, 1, posix_pthread_getthreadid_np);
     LIB_FUNCTION("1tKyG7RlMJo", "libkernel", 1, "libkernel", 1, 1, scePthreadGetprio);
-    LIB_FUNCTION("W0Hpm2X0uPE", "libkernel", 1, "libkernel", 1, 1, scePthreadSetprio);
+    LIB_FUNCTION("W0Hpm2X0uPE", "libkernel", 1, "libkernel", 1, 1, ORBIS(posix_pthread_setprio));
     LIB_FUNCTION("rNhWz+lvOMU", "libkernel", 1, "libkernel", 1, 1, _sceKernelSetThreadDtors);
     LIB_FUNCTION("6XG4B33N09g", "libkernel", 1, "libkernel", 1, 1, sched_yield);
 }
diff --git a/src/core/libraries/kernel/threads/pthread_attr.cpp b/src/core/libraries/kernel/threads/pthread_attr.cpp
index db32fa3d..ead0ff7d 100644
--- a/src/core/libraries/kernel/threads/pthread_attr.cpp
+++ b/src/core/libraries/kernel/threads/pthread_attr.cpp
@@ -303,6 +303,8 @@ void RegisterThreadAttr(Core::Loader::SymbolsResolver* sym) {
                  posix_pthread_attr_getstacksize);
     LIB_FUNCTION("VUT1ZSrHT0I", "libScePosix", 1, "libkernel", 1, 1,
                  posix_pthread_attr_getdetachstate);
+    LIB_FUNCTION("JKyG3SWyA10", "libScePosix", 1, "libkernel", 1, 1,
+                 posix_pthread_attr_setguardsize);
 
     // Orbis
     LIB_FUNCTION("4+h9EzwKF4I", "libkernel", 1, "libkernel", 1, 1,
diff --git a/src/core/libraries/kernel/threads/pthread_spec.cpp b/src/core/libraries/kernel/threads/pthread_spec.cpp
index 3d6b0f4d..f0803b67 100644
--- a/src/core/libraries/kernel/threads/pthread_spec.cpp
+++ b/src/core/libraries/kernel/threads/pthread_spec.cpp
@@ -150,6 +150,7 @@ void RegisterSpec(Core::Loader::SymbolsResolver* sym) {
 
     // Orbis
     LIB_FUNCTION("geDaqgH9lTg", "libkernel", 1, "libkernel", 1, 1, ORBIS(posix_pthread_key_create));
+    LIB_FUNCTION("PrdHuuDekhY", "libkernel", 1, "libkernel", 1, 1, ORBIS(posix_pthread_key_delete));
     LIB_FUNCTION("eoht7mQOCmo", "libkernel", 1, "libkernel", 1, 1, posix_pthread_getspecific);
     LIB_FUNCTION("+BzXYkqYeLE", "libkernel", 1, "libkernel", 1, 1,
                  ORBIS(posix_pthread_setspecific));