libsanitizer: merge from upstream (3185e47b5a8444e9fd).

17 files changed, 587 insertions, 160 deletions

diff --git a/libsanitizer/tsan/tsan_external.cpp b/libsanitizer/tsan/tsan_external.cpp
index 19ae174..98abff5 100644
--- a/libsanitizer/tsan/tsan_external.cpp
+++ b/libsanitizer/tsan/tsan_external.cpp
@@ -46,10 +46,6 @@ const char *GetReportHeaderFromTag(uptr tag) {
   return tag_data ? tag_data->header : nullptr;
 }
 
-void InsertShadowStackFrameForTag(ThreadState *thr, uptr tag) {
-  FuncEntry(thr, (uptr)&registered_tags[tag]);
-}
-
 uptr TagFromShadowStackFrame(uptr pc) {
   uptr tag_count = atomic_load(&used_tags, memory_order_relaxed);
   void *pc_ptr = (void *)pc;
@@ -60,15 +56,26 @@ uptr TagFromShadowStackFrame(uptr pc) {
 
 #if !SANITIZER_GO
 
-void ExternalAccess(void *addr, uptr caller_pc, void *tag, AccessType typ) {
+// We need to track tags for individual memory accesses, but there is no space
+// in the shadow cells for them.  Instead we push/pop them onto the thread
+// traces and ignore the extra tag frames when printing reports.
+static void PushTag(ThreadState *thr, uptr tag) {
+  FuncEntry(thr, (uptr)&registered_tags[tag]);
+}
+static void PopTag(ThreadState *thr) { FuncExit(thr); }
+
+static void ExternalAccess(void *addr, uptr caller_pc, uptr tsan_caller_pc,
+                           void *tag, AccessType typ) {
   CHECK_LT(tag, atomic_load(&used_tags, memory_order_relaxed));
+  bool in_ignored_lib;
+  if (caller_pc && libignore()->IsIgnored(caller_pc, &in_ignored_lib))
+    return;
+
   ThreadState *thr = cur_thread();
   if (caller_pc) FuncEntry(thr, caller_pc);
-  InsertShadowStackFrameForTag(thr, (uptr)tag);
-  bool in_ignored_lib;
-  if (!caller_pc || !libignore()->IsIgnored(caller_pc, &in_ignored_lib))
-    MemoryAccess(thr, CALLERPC, (uptr)addr, 1, typ);
-  FuncExit(thr);
+  PushTag(thr, (uptr)tag);
+  MemoryAccess(thr, tsan_caller_pc, (uptr)addr, 1, typ);
+  PopTag(thr);
   if (caller_pc) FuncExit(thr);
 }
 
@@ -112,12 +119,12 @@ void __tsan_external_assign_tag(void *addr, void *tag) {
 
 SANITIZER_INTERFACE_ATTRIBUTE
 void __tsan_external_read(void *addr, void *caller_pc, void *tag) {
-  ExternalAccess(addr, STRIP_PAC_PC(caller_pc), tag, kAccessRead);
+  ExternalAccess(addr, STRIP_PAC_PC(caller_pc), CALLERPC, tag, kAccessRead);
 }
 
 SANITIZER_INTERFACE_ATTRIBUTE
 void __tsan_external_write(void *addr, void *caller_pc, void *tag) {
-  ExternalAccess(addr, STRIP_PAC_PC(caller_pc), tag, kAccessWrite);
+  ExternalAccess(addr, STRIP_PAC_PC(caller_pc), CALLERPC, tag, kAccessWrite);
 }
 }  // extern "C"
 
diff --git a/libsanitizer/tsan/tsan_flags.cpp b/libsanitizer/tsan/tsan_flags.cpp
index ee78f25..3fd58f4 100644
--- a/libsanitizer/tsan/tsan_flags.cpp
+++ b/libsanitizer/tsan/tsan_flags.cpp
@@ -10,19 +10,21 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "sanitizer_common/sanitizer_flags.h"
+#include "tsan_flags.h"
+
 #include "sanitizer_common/sanitizer_flag_parser.h"
+#include "sanitizer_common/sanitizer_flags.h"
 #include "sanitizer_common/sanitizer_libc.h"
-#include "tsan_flags.h"
-#include "tsan_rtl.h"
+#include "tsan_interface.h"
 #include "tsan_mman.h"
+#include "tsan_rtl.h"
 #include "ubsan/ubsan_flags.h"
 
 namespace __tsan {
 
 // Can be overriden in frontend.
 #ifdef TSAN_EXTERNAL_HOOKS
-extern "C" const char* __tsan_default_options();
+extern "C" const char *__tsan_default_options();
 #else
 SANITIZER_WEAK_DEFAULT_IMPL
 const char *__tsan_default_options() {
diff --git a/libsanitizer/tsan/tsan_interceptors_mac.cpp b/libsanitizer/tsan/tsan_interceptors_mac.cpp
index 1ee47bc..e4f9e29 100644
--- a/libsanitizer/tsan/tsan_interceptors_mac.cpp
+++ b/libsanitizer/tsan/tsan_interceptors_mac.cpp
@@ -18,6 +18,7 @@
 #include "tsan_interceptors.h"
 #include "tsan_interface.h"
 #include "tsan_interface_ann.h"
+#include "tsan_spinlock_defs_mac.h"
 #include "sanitizer_common/sanitizer_addrhashmap.h"
 
 #include <errno.h>
diff --git a/libsanitizer/tsan/tsan_interceptors_posix.cpp b/libsanitizer/tsan/tsan_interceptors_posix.cpp
index c557d5d..6ac6ac6 100644
--- a/libsanitizer/tsan/tsan_interceptors_posix.cpp
+++ b/libsanitizer/tsan/tsan_interceptors_posix.cpp
@@ -76,6 +76,8 @@ struct ucontext_t {
 #define PTHREAD_ABI_BASE  "GLIBC_2.3.2"
 #elif defined(__aarch64__) || SANITIZER_PPC64V2
 #define PTHREAD_ABI_BASE  "GLIBC_2.17"
+#elif SANITIZER_LOONGARCH64
+#define PTHREAD_ABI_BASE  "GLIBC_2.36"
 #endif
 
 extern "C" int pthread_attr_init(void *attr);
@@ -126,6 +128,7 @@ const int SIGSYS = 12;
 const int SIGBUS = 7;
 const int SIGSYS = 31;
 #endif
+const int SI_TIMER = -2;
 void *const MAP_FAILED = (void*)-1;
 #if SANITIZER_NETBSD
 const int PTHREAD_BARRIER_SERIAL_THREAD = 1234567;
@@ -247,13 +250,21 @@ SANITIZER_WEAK_CXX_DEFAULT_IMPL void OnPotentiallyBlockingRegionEnd() {}
 }  // namespace __tsan
 
 static ThreadSignalContext *SigCtx(ThreadState *thr) {
-  ThreadSignalContext *ctx = (ThreadSignalContext*)thr->signal_ctx;
+  // This function may be called reentrantly if it is interrupted by a signal
+  // handler. Use CAS to handle the race.
+  uptr ctx = atomic_load(&thr->signal_ctx, memory_order_relaxed);
   if (ctx == 0 && !thr->is_dead) {
-    ctx = (ThreadSignalContext*)MmapOrDie(sizeof(*ctx), "ThreadSignalContext");
-    MemoryResetRange(thr, (uptr)&SigCtx, (uptr)ctx, sizeof(*ctx));
-    thr->signal_ctx = ctx;
+    uptr pctx =
+        (uptr)MmapOrDie(sizeof(ThreadSignalContext), "ThreadSignalContext");
+    MemoryResetRange(thr, (uptr)&SigCtx, pctx, sizeof(ThreadSignalContext));
+    if (atomic_compare_exchange_strong(&thr->signal_ctx, &ctx, pctx,
+                                       memory_order_relaxed)) {
+      ctx = pctx;
+    } else {
+      UnmapOrDie((ThreadSignalContext *)pctx, sizeof(ThreadSignalContext));
+    }
   }
-  return ctx;
+  return (ThreadSignalContext *)ctx;
 }
 
 ScopedInterceptor::ScopedInterceptor(ThreadState *thr, const char *fname,
@@ -968,9 +979,10 @@ void DestroyThreadState() {
 }
 
 void PlatformCleanUpThreadState(ThreadState *thr) {
-  ThreadSignalContext *sctx = thr->signal_ctx;
+  ThreadSignalContext *sctx = (ThreadSignalContext *)atomic_load(
+      &thr->signal_ctx, memory_order_relaxed);
   if (sctx) {
-    thr->signal_ctx = 0;
+    atomic_store(&thr->signal_ctx, 0, memory_order_relaxed);
     UnmapOrDie(sctx, sizeof(*sctx));
   }
 }
@@ -1351,6 +1363,19 @@ TSAN_INTERCEPTOR(int, pthread_mutex_destroy, void *m) {
   return res;
 }
 
+TSAN_INTERCEPTOR(int, pthread_mutex_lock, void *m) {
+  SCOPED_TSAN_INTERCEPTOR(pthread_mutex_lock, m);
+  MutexPreLock(thr, pc, (uptr)m);
+  int res = REAL(pthread_mutex_lock)(m);
+  if (res == errno_EOWNERDEAD)
+    MutexRepair(thr, pc, (uptr)m);
+  if (res == 0 || res == errno_EOWNERDEAD)
+    MutexPostLock(thr, pc, (uptr)m);
+  if (res == errno_EINVAL)
+    MutexInvalidAccess(thr, pc, (uptr)m);
+  return res;
+}
+
 TSAN_INTERCEPTOR(int, pthread_mutex_trylock, void *m) {
   SCOPED_TSAN_INTERCEPTOR(pthread_mutex_trylock, m);
   int res = REAL(pthread_mutex_trylock)(m);
@@ -1372,6 +1397,43 @@ TSAN_INTERCEPTOR(int, pthread_mutex_timedlock, void *m, void *abstime) {
 }
 #endif
 
+TSAN_INTERCEPTOR(int, pthread_mutex_unlock, void *m) {
+  SCOPED_TSAN_INTERCEPTOR(pthread_mutex_unlock, m);
+  MutexUnlock(thr, pc, (uptr)m);
+  int res = REAL(pthread_mutex_unlock)(m);
+  if (res == errno_EINVAL)
+    MutexInvalidAccess(thr, pc, (uptr)m);
+  return res;
+}
+
+#if SANITIZER_GLIBC
+#  if !__GLIBC_PREREQ(2, 34)
+// glibc 2.34 applies a non-default version for the two functions. They are no
+// longer expected to be intercepted by programs.
+TSAN_INTERCEPTOR(int, __pthread_mutex_lock, void *m) {
+  SCOPED_TSAN_INTERCEPTOR(__pthread_mutex_lock, m);
+  MutexPreLock(thr, pc, (uptr)m);
+  int res = REAL(__pthread_mutex_lock)(m);
+  if (res == errno_EOWNERDEAD)
+    MutexRepair(thr, pc, (uptr)m);
+  if (res == 0 || res == errno_EOWNERDEAD)
+    MutexPostLock(thr, pc, (uptr)m);
+  if (res == errno_EINVAL)
+    MutexInvalidAccess(thr, pc, (uptr)m);
+  return res;
+}
+
+TSAN_INTERCEPTOR(int, __pthread_mutex_unlock, void *m) {
+  SCOPED_TSAN_INTERCEPTOR(__pthread_mutex_unlock, m);
+  MutexUnlock(thr, pc, (uptr)m);
+  int res = REAL(__pthread_mutex_unlock)(m);
+  if (res == errno_EINVAL)
+    MutexInvalidAccess(thr, pc, (uptr)m);
+  return res;
+}
+#  endif
+#endif
+
 #if !SANITIZER_APPLE
 TSAN_INTERCEPTOR(int, pthread_spin_init, void *m, int pshared) {
   SCOPED_TSAN_INTERCEPTOR(pthread_spin_init, m, pshared);
@@ -1943,12 +2005,34 @@ TSAN_INTERCEPTOR(int, epoll_pwait, int epfd, void *ev, int cnt, int timeout,
   return res;
 }
 
-#define TSAN_MAYBE_INTERCEPT_EPOLL \
-    TSAN_INTERCEPT(epoll_create); \
-    TSAN_INTERCEPT(epoll_create1); \
-    TSAN_INTERCEPT(epoll_ctl); \
-    TSAN_INTERCEPT(epoll_wait); \
-    TSAN_INTERCEPT(epoll_pwait)
+TSAN_INTERCEPTOR(int, epoll_pwait2, int epfd, void *ev, int cnt, void *timeout,
+                 void *sigmask) {
+  SCOPED_INTERCEPTOR_RAW(epoll_pwait2, epfd, ev, cnt, timeout, sigmask);
+  // This function is new and may not be present in libc and/or kernel.
+  // Since we effectively add it to libc (as will be probed by the program
+  // using dlsym or a weak function pointer) we need to handle the case
+  // when it's not present in the actual libc.
+  if (!REAL(epoll_pwait2)) {
+    errno = errno_ENOSYS;
+    return -1;
+  }
+  if (MustIgnoreInterceptor(thr))
+    REAL(epoll_pwait2)(epfd, ev, cnt, timeout, sigmask);
+  if (epfd >= 0)
+    FdAccess(thr, pc, epfd);
+  int res = BLOCK_REAL(epoll_pwait2)(epfd, ev, cnt, timeout, sigmask);
+  if (res > 0 && epfd >= 0)
+    FdAcquire(thr, pc, epfd);
+  return res;
+}
+
+#  define TSAN_MAYBE_INTERCEPT_EPOLL \
+    TSAN_INTERCEPT(epoll_create);    \
+    TSAN_INTERCEPT(epoll_create1);   \
+    TSAN_INTERCEPT(epoll_ctl);       \
+    TSAN_INTERCEPT(epoll_wait);      \
+    TSAN_INTERCEPT(epoll_pwait);     \
+    TSAN_INTERCEPT(epoll_pwait2)
 #else
 #define TSAN_MAYBE_INTERCEPT_EPOLL
 #endif
@@ -2082,11 +2166,19 @@ void ProcessPendingSignalsImpl(ThreadState *thr) {
 
 }  // namespace __tsan
 
-static bool is_sync_signal(ThreadSignalContext *sctx, int sig) {
+static bool is_sync_signal(ThreadSignalContext *sctx, int sig,
+                           __sanitizer_siginfo *info) {
+  // If we are sending signal to ourselves, we must process it now.
+  if (sctx && sig == sctx->int_signal_send)
+    return true;
+#if SANITIZER_HAS_SIGINFO
+  // POSIX timers can be configured to send any kind of signal; however, it
+  // doesn't make any sense to consider a timer signal as synchronous!
+  if (info->si_code == SI_TIMER)
+    return false;
+#endif
   return sig == SIGSEGV || sig == SIGBUS || sig == SIGILL || sig == SIGTRAP ||
-         sig == SIGABRT || sig == SIGFPE || sig == SIGPIPE || sig == SIGSYS ||
-         // If we are sending signal to ourselves, we must process it now.
-         (sctx && sig == sctx->int_signal_send);
+         sig == SIGABRT || sig == SIGFPE || sig == SIGPIPE || sig == SIGSYS;
 }
 
 void sighandler(int sig, __sanitizer_siginfo *info, void *ctx) {
@@ -2097,7 +2189,7 @@ void sighandler(int sig, __sanitizer_siginfo *info, void *ctx) {
     return;
   }
   // Don't mess with synchronous signals.
-  const bool sync = is_sync_signal(sctx, sig);
+  const bool sync = is_sync_signal(sctx, sig, info);
   if (sync ||
       // If we are in blocking function, we can safely process it now
       // (but check if we are in a recursive interceptor,
@@ -2405,11 +2497,21 @@ static void HandleRecvmsg(ThreadState *thr, uptr pc,
     res;                                          \
   })
 
+// Ignore interceptors in OnLibraryLoaded()/Unloaded().  These hooks use code
+// (ListOfModules::init, MemoryMappingLayout::DumpListOfModules) that make
+// intercepted calls, which can cause deadlockes with ReportRace() which also
+// uses this code.
 #define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle) \
-  libignore()->OnLibraryLoaded(filename)
+  ({                                                        \
+    ScopedIgnoreInterceptors ignore_interceptors;           \
+    libignore()->OnLibraryLoaded(filename);                 \
+  })
 
-#define COMMON_INTERCEPTOR_LIBRARY_UNLOADED() \
-  libignore()->OnLibraryUnloaded()
+#define COMMON_INTERCEPTOR_LIBRARY_UNLOADED()     \
+  ({                                              \
+    ScopedIgnoreInterceptors ignore_interceptors; \
+    libignore()->OnLibraryUnloaded();             \
+  })
 
 #define COMMON_INTERCEPTOR_ACQUIRE(ctx, u) \
   Acquire(((TsanInterceptorContext *) ctx)->thr, pc, u)
@@ -2446,26 +2548,6 @@ static void HandleRecvmsg(ThreadState *thr, uptr pc,
 #define COMMON_INTERCEPTOR_ON_EXIT(ctx) \
   OnExit(((TsanInterceptorContext *) ctx)->thr)
 
-#define COMMON_INTERCEPTOR_MUTEX_PRE_LOCK(ctx, m) \
-  MutexPreLock(((TsanInterceptorContext *)ctx)->thr, \
-            ((TsanInterceptorContext *)ctx)->pc, (uptr)m)
-
-#define COMMON_INTERCEPTOR_MUTEX_POST_LOCK(ctx, m) \
-  MutexPostLock(((TsanInterceptorContext *)ctx)->thr, \
-            ((TsanInterceptorContext *)ctx)->pc, (uptr)m)
-
-#define COMMON_INTERCEPTOR_MUTEX_UNLOCK(ctx, m) \
-  MutexUnlock(((TsanInterceptorContext *)ctx)->thr, \
-            ((TsanInterceptorContext *)ctx)->pc, (uptr)m)
-
-#define COMMON_INTERCEPTOR_MUTEX_REPAIR(ctx, m) \
-  MutexRepair(((TsanInterceptorContext *)ctx)->thr, \
-            ((TsanInterceptorContext *)ctx)->pc, (uptr)m)
-
-#define COMMON_INTERCEPTOR_MUTEX_INVALID(ctx, m) \
-  MutexInvalidAccess(((TsanInterceptorContext *)ctx)->thr, \
-                     ((TsanInterceptorContext *)ctx)->pc, (uptr)m)
-
 #define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd,  \
                                      off)                                   \
   do {                                                                      \
@@ -2762,7 +2844,9 @@ TSAN_INTERCEPTOR_NETBSD_ALIAS(int, cond_wait, void *c, void *m)
 TSAN_INTERCEPTOR_NETBSD_ALIAS(int, cond_destroy, void *c)
 TSAN_INTERCEPTOR_NETBSD_ALIAS(int, mutex_init, void *m, void *a)
 TSAN_INTERCEPTOR_NETBSD_ALIAS(int, mutex_destroy, void *m)
+TSAN_INTERCEPTOR_NETBSD_ALIAS(int, mutex_lock, void *m)
 TSAN_INTERCEPTOR_NETBSD_ALIAS(int, mutex_trylock, void *m)
+TSAN_INTERCEPTOR_NETBSD_ALIAS(int, mutex_unlock, void *m)
 TSAN_INTERCEPTOR_NETBSD_ALIAS(int, rwlock_init, void *m, void *a)
 TSAN_INTERCEPTOR_NETBSD_ALIAS(int, rwlock_destroy, void *m)
 TSAN_INTERCEPTOR_NETBSD_ALIAS(int, rwlock_rdlock, void *m)
@@ -2864,8 +2948,16 @@ void InitializeInterceptors() {
 
   TSAN_INTERCEPT(pthread_mutex_init);
   TSAN_INTERCEPT(pthread_mutex_destroy);
+  TSAN_INTERCEPT(pthread_mutex_lock);
   TSAN_INTERCEPT(pthread_mutex_trylock);
   TSAN_INTERCEPT(pthread_mutex_timedlock);
+  TSAN_INTERCEPT(pthread_mutex_unlock);
+#if SANITIZER_GLIBC
+#  if !__GLIBC_PREREQ(2, 34)
+  TSAN_INTERCEPT(__pthread_mutex_lock);
+  TSAN_INTERCEPT(__pthread_mutex_unlock);
+#  endif
+#endif
 
   TSAN_INTERCEPT(pthread_spin_init);
   TSAN_INTERCEPT(pthread_spin_destroy);
@@ -3010,7 +3102,9 @@ void InitializeInterceptors() {
   TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(cond_destroy);
   TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(mutex_init);
   TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(mutex_destroy);
+  TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(mutex_lock);
   TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(mutex_trylock);
+  TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(mutex_unlock);
   TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(rwlock_init);
   TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(rwlock_destroy);
   TSAN_MAYBE_INTERCEPT_NETBSD_ALIAS(rwlock_rdlock);
diff --git a/libsanitizer/tsan/tsan_interface.h b/libsanitizer/tsan/tsan_interface.h
index 5b9d664..d53c1e3 100644
--- a/libsanitizer/tsan/tsan_interface.h
+++ b/libsanitizer/tsan/tsan_interface.h
@@ -32,6 +32,9 @@ extern "C" {
 // before any instrumented code is executed and before any call to malloc.
 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_init();
 
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE const char *
+__tsan_default_options();
+
 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_flush_memory();
 
 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read1(void *addr);
@@ -85,6 +88,8 @@ SANITIZER_INTERFACE_ATTRIBUTE void __tsan_func_exit();
 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_begin();
 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_end();
 
+SANITIZER_INTERFACE_ATTRIBUTE void __tsan_on_thread_idle();
+
 SANITIZER_INTERFACE_ATTRIBUTE
 void *__tsan_external_register_tag(const char *object_type);
 SANITIZER_INTERFACE_ATTRIBUTE
diff --git a/libsanitizer/tsan/tsan_mman.cpp b/libsanitizer/tsan/tsan_mman.cpp
index 0937e52..e5271cf 100644
--- a/libsanitizer/tsan/tsan_mman.cpp
+++ b/libsanitizer/tsan/tsan_mman.cpp
@@ -15,6 +15,7 @@
 #include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_common/sanitizer_errno.h"
 #include "sanitizer_common/sanitizer_placement_new.h"
+#include "tsan_interface.h"
 #include "tsan_mman.h"
 #include "tsan_rtl.h"
 #include "tsan_report.h"
@@ -351,6 +352,20 @@ void *user_pvalloc(ThreadState *thr, uptr pc, uptr sz) {
   return SetErrnoOnNull(user_alloc_internal(thr, pc, sz, PageSize));
 }
 
+static const void *user_alloc_begin(const void *p) {
+  if (p == nullptr || !IsAppMem((uptr)p))
+    return nullptr;
+  void *beg = allocator()->GetBlockBegin(p);
+  if (!beg)
+    return nullptr;
+
+  MBlock *b = ctx->metamap.GetBlock((uptr)beg);
+  if (!b)
+    return nullptr;  // Not a valid pointer.
+
+  return (const void *)beg;
+}
+
 uptr user_alloc_usable_size(const void *p) {
   if (p == 0 || !IsAppMem((uptr)p))
     return 0;
@@ -429,6 +444,10 @@ int __sanitizer_get_ownership(const void *p) {
   return allocator()->GetBlockBegin(p) != 0;
 }
 
+const void *__sanitizer_get_allocated_begin(const void *p) {
+  return user_alloc_begin(p);
+}
+
 uptr __sanitizer_get_allocated_size(const void *p) {
   return user_alloc_usable_size(p);
 }
diff --git a/libsanitizer/tsan/tsan_platform.h b/libsanitizer/tsan/tsan_platform.h
index 7c13c73..f0cdaf4 100644
--- a/libsanitizer/tsan/tsan_platform.h
+++ b/libsanitizer/tsan/tsan_platform.h
@@ -34,6 +34,14 @@ enum {
   // This is bad and can lead to unpredictable memory corruptions, etc
   // because range access functions assume linearity.
   kBrokenLinearity = 1 << 2,
+  // Meta for an app region overlaps with the meta of another app region.
+  // This is determined by recomputing the individual meta regions for
+  // each app region.
+  //
+  // N.B. There is no "kBrokenReverseMetaMapping" constant because there
+  // is no MetaToMem function. However, note that (!kBrokenLinearity
+  // && !kBrokenAliasedMetas) implies that MemToMeta is invertible.
+  kBrokenAliasedMetas = 1 << 3,
 };
 
 /*
@@ -42,8 +50,8 @@ C/C++ on linux/x86_64 and freebsd/x86_64
 0040 0000 0000 - 0100 0000 0000: -
 0100 0000 0000 - 1000 0000 0000: shadow
 1000 0000 0000 - 3000 0000 0000: -
-3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
-4000 0000 0000 - 5500 0000 0000: -
+3000 0000 0000 - 3400 0000 0000: metainfo (memory blocks and sync objects)
+3400 0000 0000 - 5500 0000 0000: -
 5500 0000 0000 - 5680 0000 0000: pie binaries without ASLR or on 4.1+ kernels
 5680 0000 0000 - 7d00 0000 0000: -
 7b00 0000 0000 - 7c00 0000 0000: heap
@@ -147,88 +155,133 @@ struct MappingAppleAarch64 {
 
 /*
 C/C++ on linux/aarch64 (39-bit VMA)
-0000 0010 00 - 0100 0000 00: main binary
-0100 0000 00 - 0400 0000 00: -
-0400 0000 00 - 1000 0000 00: shadow memory
-2000 0000 00 - 3100 0000 00: -
-3100 0000 00 - 3400 0000 00: metainfo
-3400 0000 00 - 5500 0000 00: -
-5500 0000 00 - 5600 0000 00: main binary (PIE)
+0000 0010 00 - 0500 0000 00: main binary                    (20 GB)
+0100 0000 00 - 2000 0000 00: -
+2000 0000 00 - 4000 0000 00: shadow memory                 (128 GB)
+4000 0000 00 - 4800 0000 00: metainfo                       (32 GB)
+4800 0000 00 - 5500 0000 00: -
+5500 0000 00 - 5a00 0000 00: main binary (PIE)              (20 GB)
 5600 0000 00 - 7c00 0000 00: -
-7c00 0000 00 - 7d00 0000 00: heap
-7d00 0000 00 - 7fff ffff ff: modules and main thread stack
+7a00 0000 00 - 7d00 0000 00: heap                           (12 GB)
+7d00 0000 00 - 7fff ffff ff: modules and main thread stack  (12 GB)
 */
 struct MappingAarch64_39 {
   static const uptr kLoAppMemBeg   = 0x0000001000ull;
-  static const uptr kLoAppMemEnd   = 0x0100000000ull;
-  static const uptr kShadowBeg = 0x0400000000ull;
-  static const uptr kShadowEnd = 0x1000000000ull;
-  static const uptr kMetaShadowBeg = 0x3100000000ull;
-  static const uptr kMetaShadowEnd = 0x3400000000ull;
+  static const uptr kLoAppMemEnd   = 0x0500000000ull;
+  static const uptr kShadowBeg     = 0x2000000000ull;
+  static const uptr kShadowEnd     = 0x4000000000ull;
+  static const uptr kMetaShadowBeg = 0x4000000000ull;
+  static const uptr kMetaShadowEnd = 0x4800000000ull;
   static const uptr kMidAppMemBeg  = 0x5500000000ull;
-  static const uptr kMidAppMemEnd = 0x5600000000ull;
-  static const uptr kHeapMemBeg    = 0x7c00000000ull;
+  static const uptr kMidAppMemEnd  = 0x5a00000000ull;
+  static const uptr kHeapMemBeg    = 0x7a00000000ull;
   static const uptr kHeapMemEnd    = 0x7d00000000ull;
-  static const uptr kHiAppMemBeg   = 0x7e00000000ull;
+  static const uptr kHiAppMemBeg   = 0x7d00000000ull;
   static const uptr kHiAppMemEnd   = 0x7fffffffffull;
-  static const uptr kShadowMsk = 0x7800000000ull;
-  static const uptr kShadowXor = 0x0200000000ull;
-  static const uptr kShadowAdd = 0x0000000000ull;
+  static const uptr kShadowMsk     = 0x7000000000ull;
+  static const uptr kShadowXor     = 0x1000000000ull;
+  static const uptr kShadowAdd     = 0x0000000000ull;
   static const uptr kVdsoBeg       = 0x7f00000000ull;
 };
 
 /*
 C/C++ on linux/aarch64 (42-bit VMA)
-00000 0010 00 - 01000 0000 00: main binary
-01000 0000 00 - 08000 0000 00: -
-08000 0000 00 - 10000 0000 00: shadow memory
-10000 0000 00 - 26000 0000 00: -
-26000 0000 00 - 28000 0000 00: metainfo
-28000 0000 00 - 2aa00 0000 00: -
-2aa00 0000 00 - 2ab00 0000 00: main binary (PIE)
-2ab00 0000 00 - 3e000 0000 00: -
-3e000 0000 00 - 3f000 0000 00: heap
-3f000 0000 00 - 3ffff ffff ff: modules and main thread stack
+00000 0010 00 - 02000 0000 00: main binary                   (128 GB)
+02000 0000 00 - 08000 0000 00: -
+10000 0000 00 - 20000 0000 00: shadow memory                (1024 GB)
+20000 0000 00 - 24000 0000 00: metainfo                      (256 GB)
+24000 0000 00 - 2aa00 0000 00: -
+2aa00 0000 00 - 2c000 0000 00: main binary (PIE)              (88 GB)
+2c000 0000 00 - 3c000 0000 00: -
+3c000 0000 00 - 3f000 0000 00: heap                          (192 GB)
+3f000 0000 00 - 3ffff ffff ff: modules and main thread stack  (64 GB)
 */
 struct MappingAarch64_42 {
-  static const uptr kBroken = kBrokenReverseMapping;
   static const uptr kLoAppMemBeg   = 0x00000001000ull;
-  static const uptr kLoAppMemEnd   = 0x01000000000ull;
-  static const uptr kShadowBeg = 0x08000000000ull;
-  static const uptr kShadowEnd = 0x10000000000ull;
-  static const uptr kMetaShadowBeg = 0x26000000000ull;
-  static const uptr kMetaShadowEnd = 0x28000000000ull;
+  static const uptr kLoAppMemEnd   = 0x02000000000ull;
+  static const uptr kShadowBeg     = 0x10000000000ull;
+  static const uptr kShadowEnd     = 0x20000000000ull;
+  static const uptr kMetaShadowBeg = 0x20000000000ull;
+  static const uptr kMetaShadowEnd = 0x24000000000ull;
   static const uptr kMidAppMemBeg  = 0x2aa00000000ull;
-  static const uptr kMidAppMemEnd = 0x2ab00000000ull;
-  static const uptr kHeapMemBeg    = 0x3e000000000ull;
+  static const uptr kMidAppMemEnd  = 0x2c000000000ull;
+  static const uptr kHeapMemBeg    = 0x3c000000000ull;
   static const uptr kHeapMemEnd    = 0x3f000000000ull;
   static const uptr kHiAppMemBeg   = 0x3f000000000ull;
   static const uptr kHiAppMemEnd   = 0x3ffffffffffull;
-  static const uptr kShadowMsk = 0x3c000000000ull;
-  static const uptr kShadowXor = 0x04000000000ull;
-  static const uptr kShadowAdd = 0x00000000000ull;
+  static const uptr kShadowMsk     = 0x38000000000ull;
+  static const uptr kShadowXor     = 0x08000000000ull;
+  static const uptr kShadowAdd     = 0x00000000000ull;
   static const uptr kVdsoBeg       = 0x37f00000000ull;
 };
 
+/*
+C/C++ on linux/aarch64 (48-bit VMA)
+0000 0000 1000 - 0a00 0000 0000: main binary                   (10240 GB)
+0a00 0000 1000 - 1554 0000 0000: -
+1554 0000 1000 - 5400 0000 0000: shadow memory                 (64176 GB)
+5400 0000 1000 - 8000 0000 0000: -
+8000 0000 1000 - 0a00 0000 0000: metainfo                      (32768 GB)
+a000 0000 1000 - aaaa 0000 0000: -
+aaaa 0000 1000 - ac00 0000 0000: main binary (PIE)              (1368 GB)
+ac00 0000 1000 - fc00 0000 0000: -
+fc00 0000 1000 - ffff ffff ffff: modules and main thread stack  (4096 GB)
+
+N.B. the shadow memory region has a strange start address, because it
+contains the shadows for the mid, high and low app regions (in this
+unusual order).
+*/
 struct MappingAarch64_48 {
   static const uptr kLoAppMemBeg   = 0x0000000001000ull;
-  static const uptr kLoAppMemEnd   = 0x0000200000000ull;
-  static const uptr kShadowBeg = 0x0001000000000ull;
-  static const uptr kShadowEnd = 0x0002000000000ull;
-  static const uptr kMetaShadowBeg = 0x0005000000000ull;
-  static const uptr kMetaShadowEnd = 0x0006000000000ull;
+  static const uptr kLoAppMemEnd   = 0x00a0000000000ull;
+  static const uptr kShadowBeg     = 0x0155400000000ull;
+  static const uptr kShadowEnd     = 0x0540000000000ull;
+  static const uptr kMetaShadowBeg = 0x0800000000000ull;
+  static const uptr kMetaShadowEnd = 0x0a00000000000ull;
   static const uptr kMidAppMemBeg  = 0x0aaaa00000000ull;
-  static const uptr kMidAppMemEnd = 0x0aaaf00000000ull;
-  static const uptr kHeapMemBeg    = 0x0ffff00000000ull;
-  static const uptr kHeapMemEnd    = 0x0ffff00000000ull;
-  static const uptr kHiAppMemBeg   = 0x0ffff00000000ull;
+  static const uptr kMidAppMemEnd  = 0x0ac0000000000ull;
+  static const uptr kHiAppMemBeg   = 0x0fc0000000000ull;
   static const uptr kHiAppMemEnd   = 0x1000000000000ull;
-  static const uptr kShadowMsk = 0x0fff800000000ull;
-  static const uptr kShadowXor = 0x0000800000000ull;
-  static const uptr kShadowAdd = 0x0000000000000ull;
+  static const uptr kHeapMemBeg    = 0x0fc0000000000ull;
+  static const uptr kHeapMemEnd    = 0x0fc0000000000ull;
+  static const uptr kShadowMsk     = 0x0c00000000000ull;
+  static const uptr kShadowXor     = 0x0200000000000ull;
+  static const uptr kShadowAdd     = 0x0000000000000ull;
   static const uptr kVdsoBeg       = 0xffff000000000ull;
 };
 
+/* C/C++ on linux/loongarch64 (47-bit VMA)
+0000 0000 4000 - 0080 0000 0000: main binary
+0080 0000 0000 - 0100 0000 0000: -
+0100 0000 0000 - 1000 0000 0000: shadow memory
+1000 0000 0000 - 3000 0000 0000: -
+3000 0000 0000 - 3400 0000 0000: metainfo
+3400 0000 0000 - 5555 0000 0000: -
+5555 0000 0000 - 5556 0000 0000: main binary (PIE)
+5556 0000 0000 - 7ffe 0000 0000: -
+7ffe 0000 0000 - 7fff 0000 0000: heap
+7fff 0000 0000 - 7fff 8000 0000: -
+7fff 8000 0000 - 8000 0000 0000: modules and main thread stack
+*/
+struct MappingLoongArch64_47 {
+  static const uptr kMetaShadowBeg = 0x300000000000ull;
+  static const uptr kMetaShadowEnd = 0x340000000000ull;
+  static const uptr kShadowBeg     = 0x010000000000ull;
+  static const uptr kShadowEnd     = 0x100000000000ull;
+  static const uptr kHeapMemBeg    = 0x7ffe00000000ull;
+  static const uptr kHeapMemEnd    = 0x7fff00000000ull;
+  static const uptr kLoAppMemBeg   = 0x000000004000ull;
+  static const uptr kLoAppMemEnd   = 0x008000000000ull;
+  static const uptr kMidAppMemBeg  = 0x555500000000ull;
+  static const uptr kMidAppMemEnd  = 0x555600000000ull;
+  static const uptr kHiAppMemBeg   = 0x7fff80000000ull;
+  static const uptr kHiAppMemEnd   = 0x800000000000ull;
+  static const uptr kShadowMsk     = 0x780000000000ull;
+  static const uptr kShadowXor     = 0x040000000000ull;
+  static const uptr kShadowAdd     = 0x000000000000ull;
+  static const uptr kVdsoBeg       = 0x7fffffffc000ull;
+};
+
 /*
 C/C++ on linux/powerpc64 (44-bit VMA)
 0000 0000 0100 - 0001 0000 0000: main binary
@@ -242,8 +295,8 @@ C/C++ on linux/powerpc64 (44-bit VMA)
 0f60 0000 0000 - 1000 0000 0000: modules and main thread stack
 */
 struct MappingPPC64_44 {
-  static const uptr kBroken =
-      kBrokenMapping | kBrokenReverseMapping | kBrokenLinearity;
+  static const uptr kBroken = kBrokenMapping | kBrokenReverseMapping |
+                              kBrokenLinearity | kBrokenAliasedMetas;
   static const uptr kMetaShadowBeg = 0x0b0000000000ull;
   static const uptr kMetaShadowEnd = 0x0d0000000000ull;
   static const uptr kShadowBeg     = 0x000100000000ull;
@@ -599,6 +652,8 @@ ALWAYS_INLINE auto SelectMapping(Arg arg) {
     case 48:
       return Func::template Apply<MappingAarch64_48>(arg);
   }
+#  elif SANITIZER_LOONGARCH64
+  return Func::template Apply<MappingLoongArch64_47>(arg);
 #  elif defined(__powerpc64__)
   switch (vmaSize) {
     case 44:
@@ -627,6 +682,7 @@ void ForEachMapping() {
   Func::template Apply<MappingAarch64_39>();
   Func::template Apply<MappingAarch64_42>();
   Func::template Apply<MappingAarch64_48>();
+  Func::template Apply<MappingLoongArch64_47>();
   Func::template Apply<MappingPPC64_44>();
   Func::template Apply<MappingPPC64_46>();
   Func::template Apply<MappingPPC64_47>();
diff --git a/libsanitizer/tsan/tsan_platform_linux.cpp b/libsanitizer/tsan/tsan_platform_linux.cpp
index 807f6be..384a443 100644
--- a/libsanitizer/tsan/tsan_platform_linux.cpp
+++ b/libsanitizer/tsan/tsan_platform_linux.cpp
@@ -66,7 +66,8 @@ extern "C" void *__libc_stack_end;
 void *__libc_stack_end = 0;
 #endif
 
-#if SANITIZER_LINUX && defined(__aarch64__) && !SANITIZER_GO
+#if SANITIZER_LINUX && (defined(__aarch64__) || defined(__loongarch_lp64)) && \
+    !SANITIZER_GO
 # define INIT_LONGJMP_XOR_KEY 1
 #else
 # define INIT_LONGJMP_XOR_KEY 0
@@ -230,6 +231,14 @@ void InitializePlatformEarly() {
     Die();
   }
 #endif
+#elif SANITIZER_LOONGARCH64
+# if !SANITIZER_GO
+  if (vmaSize != 47) {
+    Printf("FATAL: ThreadSanitizer: unsupported VMA range\n");
+    Printf("FATAL: Found %zd - Supported 47\n", vmaSize);
+    Die();
+  }
+# endif
 #elif defined(__powerpc64__)
 # if !SANITIZER_GO
   if (vmaSize != 44 && vmaSize != 46 && vmaSize != 47) {
@@ -290,11 +299,12 @@ void InitializePlatform() {
       SetAddressSpaceUnlimited();
       reexec = true;
     }
-#if SANITIZER_LINUX && defined(__aarch64__)
+#if SANITIZER_ANDROID && (defined(__aarch64__) || defined(__x86_64__))
     // After patch "arm64: mm: support ARCH_MMAP_RND_BITS." is introduced in
     // linux kernel, the random gap between stack and mapped area is increased
     // from 128M to 36G on 39-bit aarch64. As it is almost impossible to cover
     // this big range, we should disable randomized virtual space on aarch64.
+    // ASLR personality check.
     int old_personality = personality(0xffffffff);
     if (old_personality != -1 && (old_personality & ADDR_NO_RANDOMIZE) == 0) {
       VReport(1, "WARNING: Program is run with randomized virtual address "
@@ -303,6 +313,9 @@ void InitializePlatform() {
       CHECK_NE(personality(old_personality | ADDR_NO_RANDOMIZE), -1);
       reexec = true;
     }
+
+#endif
+#if SANITIZER_LINUX && (defined(__aarch64__) || defined(__loongarch_lp64))
     // Initialize the xor key used in {sig}{set,long}jump.
     InitializeLongjmpXorKey();
 #endif
@@ -375,6 +388,8 @@ static uptr UnmangleLongJmpSp(uptr mangled_sp) {
 # else
   return mangled_sp;
 # endif
+#elif defined(__loongarch_lp64)
+  return mangled_sp ^ longjmp_xor_key;
 #elif defined(__powerpc64__)
   // Reverse of:
   //   ld   r4, -28696(r13)
@@ -410,6 +425,8 @@ static uptr UnmangleLongJmpSp(uptr mangled_sp) {
 #elif SANITIZER_LINUX
 # ifdef __aarch64__
 #  define LONG_JMP_SP_ENV_SLOT 13
+# elif defined(__loongarch__)
+#  define LONG_JMP_SP_ENV_SLOT 1
 # elif defined(__mips64)
 #  define LONG_JMP_SP_ENV_SLOT 1
 # elif defined(__s390x__)
@@ -436,7 +453,11 @@ static void InitializeLongjmpXorKey() {
 
   // 2. Retrieve vanilla/mangled SP.
   uptr sp;
+#ifdef __loongarch__
+  asm("move  %0, $sp" : "=r" (sp));
+#else
   asm("mov  %0, sp" : "=r" (sp));
+#endif
   uptr mangled_sp = ((uptr *)&env)[LONG_JMP_SP_ENV_SLOT];
 
   // 3. xor SPs to obtain key.
diff --git a/libsanitizer/tsan/tsan_platform_posix.cpp b/libsanitizer/tsan/tsan_platform_posix.cpp
index 71874aa..e7dcd66 100644
--- a/libsanitizer/tsan/tsan_platform_posix.cpp
+++ b/libsanitizer/tsan/tsan_platform_posix.cpp
@@ -32,7 +32,7 @@ static const char kShadowMemoryMappingHint[] =
     "TSAN_OPTIONS=%s=0\n";
 
 #  if !SANITIZER_GO
-static void DontDumpShadow(uptr addr, uptr size) {
+void DontDumpShadow(uptr addr, uptr size) {
   if (common_flags()->use_madv_dontdump)
     if (!DontDumpShadowMemory(addr, size)) {
       Printf(kShadowMemoryMappingWarning, SanitizerToolName, addr, addr + size,
diff --git a/libsanitizer/tsan/tsan_rtl.cpp b/libsanitizer/tsan/tsan_rtl.cpp
index db3d945..6b1ec1d 100644
--- a/libsanitizer/tsan/tsan_rtl.cpp
+++ b/libsanitizer/tsan/tsan_rtl.cpp
@@ -213,6 +213,9 @@ static void DoResetImpl(uptr epoch) {
 #else
   auto resetFailed =
       !MmapFixedSuperNoReserve(shadow_begin, shadow_end-shadow_begin, "shadow");
+#  if !SANITIZER_GO
+  DontDumpShadow(shadow_begin, shadow_end - shadow_begin);
+#  endif
 #endif
   if (resetFailed) {
     Printf("failed to reset shadow memory\n");
diff --git a/libsanitizer/tsan/tsan_rtl.h b/libsanitizer/tsan/tsan_rtl.h
index f0918d8..a5606db 100644
--- a/libsanitizer/tsan/tsan_rtl.h
+++ b/libsanitizer/tsan/tsan_rtl.h
@@ -56,7 +56,8 @@ namespace __tsan {
 
 #if !SANITIZER_GO
 struct MapUnmapCallback;
-#if defined(__mips64) || defined(__aarch64__) || defined(__powerpc__)
+#if defined(__mips64) || defined(__aarch64__) || defined(__loongarch__) || \
+    defined(__powerpc__)
 
 struct AP32 {
   static const uptr kSpaceBeg = 0;
@@ -219,7 +220,7 @@ struct ThreadState {
 #endif
 
   atomic_uintptr_t in_signal_handler;
-  ThreadSignalContext *signal_ctx;
+  atomic_uintptr_t signal_ctx;
 
 #if !SANITIZER_GO
   StackID last_sleep_stack_id;
@@ -483,6 +484,7 @@ void MapThreadTrace(uptr addr, uptr size, const char *name);
 void DontNeedShadowFor(uptr addr, uptr size);
 void UnmapShadow(ThreadState *thr, uptr addr, uptr size);
 void InitializeShadowMemory();
+void DontDumpShadow(uptr addr, uptr size);
 void InitializeInterceptors();
 void InitializeLibIgnore();
 void InitializeDynamicAnnotations();
@@ -678,8 +680,9 @@ ALWAYS_INLINE
 void LazyInitialize(ThreadState *thr) {
   // If we can use .preinit_array, assume that __tsan_init
   // called from .preinit_array initializes runtime before
-  // any instrumented code except ANDROID.
-#if (!SANITIZER_CAN_USE_PREINIT_ARRAY || defined(__ANDROID__))
+  // any instrumented code except when tsan is used as a 
+  // shared library.
+#if (!SANITIZER_CAN_USE_PREINIT_ARRAY || defined(SANITIZER_SHARED))
   if (UNLIKELY(!is_initialized))
     Initialize(thr);
 #endif
diff --git a/libsanitizer/tsan/tsan_rtl_aarch64.S b/libsanitizer/tsan/tsan_rtl_aarch64.S
index e0b4c71..c616265 100644
--- a/libsanitizer/tsan/tsan_rtl_aarch64.S
+++ b/libsanitizer/tsan/tsan_rtl_aarch64.S
@@ -3,28 +3,6 @@
 
 #include "sanitizer_common/sanitizer_asm.h"
 
-#if defined(__APPLE__)
-.align  2
-
-.section  __DATA,__nl_symbol_ptr,non_lazy_symbol_pointers
-.long _setjmp$non_lazy_ptr
-_setjmp$non_lazy_ptr:
-.indirect_symbol _setjmp
-.long 0
-
-.section  __DATA,__nl_symbol_ptr,non_lazy_symbol_pointers
-.long __setjmp$non_lazy_ptr
-__setjmp$non_lazy_ptr:
-.indirect_symbol __setjmp
-.long 0
-
-.section  __DATA,__nl_symbol_ptr,non_lazy_symbol_pointers
-.long _sigsetjmp$non_lazy_ptr
-_sigsetjmp$non_lazy_ptr:
-.indirect_symbol _sigsetjmp
-.long 0
-#endif
-
 #if !defined(__APPLE__)
 .section .text
 #else
@@ -75,9 +53,8 @@ ASM_SYMBOL_INTERCEPTOR(setjmp):
   ldr     x1, [x1, #:got_lo12:_ZN14__interception11real_setjmpE]
   ldr     x1, [x1]
 #else
-  adrp    x1, _setjmp$non_lazy_ptr@page
-  add     x1, x1, _setjmp$non_lazy_ptr@pageoff
-  ldr     x1, [x1]
+  adrp    x1, _setjmp@GOTPAGE
+  ldr     x1, [x1, _setjmp@GOTPAGEOFF]
 #endif
   br      x1
 
@@ -126,9 +103,8 @@ ASM_SYMBOL_INTERCEPTOR(_setjmp):
   ldr     x1, [x1, #:got_lo12:_ZN14__interception12real__setjmpE]
   ldr     x1, [x1]
 #else
-  adrp    x1, __setjmp$non_lazy_ptr@page
-  add     x1, x1, __setjmp$non_lazy_ptr@pageoff
-  ldr     x1, [x1]
+  adrp    x1, __setjmp@GOTPAGE
+  ldr     x1, [x1, __setjmp@GOTPAGEOFF]
 #endif
   br      x1
 
@@ -179,9 +155,8 @@ ASM_SYMBOL_INTERCEPTOR(sigsetjmp):
   ldr     x2, [x2, #:got_lo12:_ZN14__interception14real_sigsetjmpE]
   ldr     x2, [x2]
 #else
-  adrp    x2, _sigsetjmp$non_lazy_ptr@page
-  add     x2, x2, _sigsetjmp$non_lazy_ptr@pageoff
-  ldr     x2, [x2]
+  adrp    x2, _sigsetjmp@GOTPAGE
+  ldr     x2, [x2, _sigsetjmp@GOTPAGEOFF]
 #endif
   br      x2
   CFI_ENDPROC
diff --git a/libsanitizer/tsan/tsan_rtl_loongarch64.S b/libsanitizer/tsan/tsan_rtl_loongarch64.S
new file mode 100644
index 0000000..12856bd
--- /dev/null
+++ b/libsanitizer/tsan/tsan_rtl_loongarch64.S
@@ -0,0 +1,196 @@
+#include "sanitizer_common/sanitizer_asm.h"
+
+.section .text
+
+ASM_HIDDEN(__tsan_setjmp)
+.comm _ZN14__interception11real_setjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(setjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(setjmp))
+ASM_SYMBOL_INTERCEPTOR(setjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception11real_setjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(setjmp))
+
+.comm _ZN14__interception12real__setjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(_setjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(_setjmp))
+ASM_SYMBOL_INTERCEPTOR(_setjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception12real__setjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(_setjmp))
+
+.comm _ZN14__interception14real_sigsetjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(sigsetjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))
+ASM_SYMBOL_INTERCEPTOR(sigsetjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception14real_sigsetjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))
+
+.comm _ZN14__interception16real___sigsetjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(__sigsetjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))
+ASM_SYMBOL_INTERCEPTOR(__sigsetjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception16real___sigsetjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))
diff --git a/libsanitizer/tsan/tsan_rtl_ppc64.S b/libsanitizer/tsan/tsan_rtl_ppc64.S
index 9e533a7..8285e21 100644
--- a/libsanitizer/tsan/tsan_rtl_ppc64.S
+++ b/libsanitizer/tsan/tsan_rtl_ppc64.S
@@ -1,6 +1,5 @@
 #include "tsan_ppc_regs.h"
 
-        .machine altivec
         .section .text
         .hidden __tsan_setjmp
         .globl _setjmp
diff --git a/libsanitizer/tsan/tsan_rtl_report.cpp b/libsanitizer/tsan/tsan_rtl_report.cpp
index c2cff60..0311df5 100644
--- a/libsanitizer/tsan/tsan_rtl_report.cpp
+++ b/libsanitizer/tsan/tsan_rtl_report.cpp
@@ -10,20 +10,20 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_common/sanitizer_libc.h"
 #include "sanitizer_common/sanitizer_placement_new.h"
 #include "sanitizer_common/sanitizer_stackdepot.h"
-#include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_common/sanitizer_stacktrace.h"
+#include "tsan_fd.h"
+#include "tsan_flags.h"
+#include "tsan_mman.h"
 #include "tsan_platform.h"
+#include "tsan_report.h"
 #include "tsan_rtl.h"
 #include "tsan_suppressions.h"
 #include "tsan_symbolize.h"
-#include "tsan_report.h"
 #include "tsan_sync.h"
-#include "tsan_mman.h"
-#include "tsan_flags.h"
-#include "tsan_fd.h"
 
 namespace __tsan {
 
diff --git a/libsanitizer/tsan/tsan_spinlock_defs_mac.h b/libsanitizer/tsan/tsan_spinlock_defs_mac.h
new file mode 100644
index 0000000..1a99a81
--- /dev/null
+++ b/libsanitizer/tsan/tsan_spinlock_defs_mac.h
@@ -0,0 +1,45 @@
+//===-- tsan_spinlock_defs_mac.h -------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer (TSan), a race detector.
+//
+// Mac-specific forward-declared function defintions that may be
+// deprecated in later versions of the OS.
+// These are needed for interceptors.
+//
+//===----------------------------------------------------------------------===//
+
+#if SANITIZER_APPLE
+
+#ifndef TSAN_SPINLOCK_DEFS_MAC_H
+#define TSAN_SPINLOCK_DEFS_MAC_H
+
+#include <stdint.h>
+
+extern "C" {
+
+/*
+Provides forward declarations related to OSSpinLocks on Darwin. These functions are
+deprecated on macOS version 10.12 and later,
+and are no longer included in the system headers.
+
+However, the symbols are still available on the system, so we provide these forward
+declarations to prevent compilation errors in tsan_interceptors_mac.cpp, which
+references these functions when defining TSAN interceptor functions.
+*/
+
+typedef int32_t OSSpinLock;
+
+void OSSpinLockLock(volatile OSSpinLock *__lock);
+void OSSpinLockUnlock(volatile OSSpinLock *__lock);
+bool OSSpinLockTry(volatile OSSpinLock *__lock);
+
+}
+
+#endif //TSAN_SPINLOCK_DEFS_MAC_H
+#endif // SANITIZER_APPLE
diff --git a/libsanitizer/tsan/tsan_suppressions.cpp b/libsanitizer/tsan/tsan_suppressions.cpp
index a1c1bf8..9cdfa32 100644
--- a/libsanitizer/tsan/tsan_suppressions.cpp
+++ b/libsanitizer/tsan/tsan_suppressions.cpp
@@ -10,15 +10,16 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "tsan_suppressions.h"
+
 #include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_common/sanitizer_libc.h"
 #include "sanitizer_common/sanitizer_placement_new.h"
 #include "sanitizer_common/sanitizer_suppressions.h"
-#include "tsan_suppressions.h"
-#include "tsan_rtl.h"
 #include "tsan_flags.h"
 #include "tsan_mman.h"
 #include "tsan_platform.h"
+#include "tsan_rtl.h"
 
 #if !SANITIZER_GO
 // Suppressions for true/false positives in standard libraries.