Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/cleanup_in_tsd_destructor.c

@@ -0,0 +1,46 @@
+// Regression test for thread lifetime tracking. Thread data should be
+// considered live during the thread's termination, at least until the
+// user-installed TSD destructors have finished running (since they may contain
+// additional cleanup tasks). LSan doesn't actually meet that goal 100%, but it
+// makes its best effort.
+// RUN: LSAN_BASE="report_objects=1:use_registers=0:use_stacks=0:use_globals=0"
+// RUN: %clang_lsan %s -o %t
+// RUN: %env_lsan_opts=$LSAN_BASE:use_tls=1 %run %t
+// RUN: %env_lsan_opts=$LSAN_BASE:use_tls=0 not %run %t 2>&1 | FileCheck %s
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "sanitizer/lsan_interface.h"
+#include "sanitizer_common/print_address.h"
+
+pthread_key_t key;
+__thread void *p;
+
+void key_destructor(void *arg) {
+  // Generally this may happen on a different thread.
+  __lsan_do_leak_check();
+}
+
+void *thread_func(void *arg) {
+  p = malloc(1337);
+  print_address("Test alloc: ", 1, p);
+  int res = pthread_setspecific(key, (void*)1);
+  assert(res == 0);
+  return 0;
+}
+
+int main() {
+  int res = pthread_key_create(&key, &key_destructor);
+  assert(res == 0);
+  pthread_t thread_id;
+  res = pthread_create(&thread_id, 0, thread_func, 0);
+  assert(res == 0);
+  res = pthread_join(thread_id, 0);
+  assert(res == 0);
+  return 0;
+}
+// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
+// CHECK: [[ADDR]] (1337 bytes)

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/disabler_in_tsd_destructor.c

@@ -0,0 +1,39 @@
+// Regression test. Disabler should not depend on TSD validity.
+// RUN: LSAN_BASE="report_objects=1:use_registers=0:use_stacks=0:use_globals=0:use_tls=1:use_ld_allocations=0"
+// RUN: %clang_lsan %s -o %t
+// RUN: %env_lsan_opts=$LSAN_BASE %run %t
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "sanitizer/lsan_interface.h"
+
+pthread_key_t key;
+
+void key_destructor(void *arg) {
+  __lsan_disable();
+  void *p = malloc(1337);
+  // Break optimization.
+  fprintf(stderr, "Test alloc: %p.\n", p);
+  pthread_setspecific(key, 0);
+  __lsan_enable();
+}
+
+void *thread_func(void *arg) {
+  int res = pthread_setspecific(key, (void*)1);
+  assert(res == 0);
+  return 0;
+}
+
+int main() {
+  int res = pthread_key_create(&key, &key_destructor);
+  assert(res == 0);
+  pthread_t thread_id;
+  res = pthread_create(&thread_id, 0, thread_func, 0);
+  assert(res == 0);
+  res = pthread_join(thread_id, 0);
+  assert(res == 0);
+  return 0;
+}

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/fork.cc

@@ -0,0 +1,24 @@
+// Test that thread local data is handled correctly after forking without exec().
+// RUN: %clangxx_lsan %s -o %t
+// RUN: %run %t 2>&1
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+__thread void *thread_local_var;
+
+int main() {
+  int status = 0;
+  thread_local_var = malloc(1337);
+  pid_t pid = fork();
+  assert(pid >= 0);
+  if (pid > 0) {
+    waitpid(pid, &status, 0);
+    assert(WIFEXITED(status));
+    return WEXITSTATUS(status);
+  }
+  return 0;
+}

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/fork_threaded.cc

@@ -0,0 +1,43 @@
+// Test that thread local data is handled correctly after forking without
+// exec(). In this test leak checking is initiated from a non-main thread.
+// RUN: %clangxx_lsan %s -o %t
+// RUN: %run %t 2>&1
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+__thread void *thread_local_var;
+
+void *exit_thread_func(void *arg) {
+  exit(0);
+}
+
+void ExitFromThread() {
+  pthread_t tid;
+  int res;
+  res = pthread_create(&tid, 0, exit_thread_func, 0);
+  assert(res == 0);
+  pthread_join(tid, 0);
+}
+
+int main() {
+  int status = 0;
+  thread_local_var = malloc(1337);
+  pid_t pid = fork();
+  assert(pid >= 0);
+  if (pid > 0) {
+    waitpid(pid, &status, 0);
+    assert(WIFEXITED(status));
+    return WEXITSTATUS(status);
+  } else {
+    // Spawn a thread and call exit() from there, to check that we track main
+    // thread's pid correctly even if leak checking is initiated from another
+    // thread.
+    ExitFromThread();
+  }
+  return 0;
+}

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/guard-page.c

@@ -0,0 +1,61 @@
+// Check that if LSan finds that SP doesn't point into thread stack (e.g.
+// if swapcontext is used), LSan will not hit the guard page.
+// RUN: %clang_lsan %s -o %t && %run %t
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <ucontext.h>
+
+pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+int ctxfunc_started = 0;
+
+static void die(const char* msg, int err) {
+  if (err == 0)
+    err = errno;
+  fprintf(stderr, "%s: %s\n", msg, strerror(err));
+  exit(EXIT_FAILURE);
+}
+
+static void ctxfunc() {
+  pthread_mutex_lock(&mutex);
+  ctxfunc_started = 1;
+  // printf("ctxfunc\n");
+  pthread_cond_signal(&cond);
+  pthread_mutex_unlock(&mutex);
+  // Leave this context alive when the program exits.
+  for (;;);
+}
+
+static void* thread(void* arg) {
+  (void)arg;
+  ucontext_t ctx;
+  void* stack;
+
+  if (getcontext(&ctx) < 0)
+    die("getcontext", 0);
+  stack = malloc(1 << 11);
+  if (stack == NULL)
+    die("malloc", 0);
+  ctx.uc_stack.ss_sp = stack;
+  ctx.uc_stack.ss_size = 1 << 11;
+  makecontext(&ctx, ctxfunc, 0);
+  setcontext(&ctx);
+  die("setcontext", 0);
+  return NULL;
+}
+
+int main() {
+  pthread_t tid;
+  int i;
+
+  pthread_mutex_lock(&mutex);
+  i = pthread_create(&tid, NULL, thread, NULL);
+  if (i != 0)
+    die("pthread_create", i);
+  while (!ctxfunc_started) pthread_cond_wait(&cond, &mutex);
+  pthread_mutex_unlock(&mutex);
+  return 0;
+}

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/lit.local.cfg

@@ -0,0 +1,9 @@
+def getRoot(config):
+  if not config.parent:
+    return config
+  return getRoot(config.parent)
+
+root = getRoot(config)
+
+if root.host_os not in ['Linux']:
+  config.unsupported = True

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/use_tls_dynamic.cc

@@ -0,0 +1,52 @@
+// Test that dynamically allocated TLS space is included in the root set.
+// RUN: LSAN_BASE="report_objects=1:use_stacks=0:use_registers=0:use_ld_allocations=0"
+// RUN: %clangxx %s -DBUILD_DSO -fPIC -shared -o %t-so.so
+// RUN: %clangxx_lsan %s -o %t
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=0" not %run %t 2>&1 | FileCheck %s
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=1" %run %t 2>&1
+// RUN: %env_lsan_opts="" %run %t 2>&1
+// UNSUPPORTED: i386-linux,arm
+
+#ifndef BUILD_DSO
+#include <assert.h>
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string>
+#include "sanitizer_common/print_address.h"
+
+int main(int argc, char *argv[]) {
+  std::string path = std::string(argv[0]) + "-so.so";
+
+  void *handle = dlopen(path.c_str(), RTLD_LAZY);
+  assert(handle != 0);
+  typedef void **(* store_t)(void *p);
+  store_t StoreToTLS = (store_t)dlsym(handle, "StoreToTLS");
+  assert(dlerror() == 0);
+
+  void *p = malloc(1337);
+  // If we don't  know about dynamic TLS, we will return a false leak above.
+  void **p_in_tls = StoreToTLS(p);
+  assert(*p_in_tls == p);
+  print_address("Test alloc: ", 1, p);
+  return 0;
+}
+// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
+// CHECK: LeakSanitizer: detected memory leaks
+// CHECK: [[ADDR]] (1337 bytes)
+// CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer:
+
+#else  // BUILD_DSO
+// A loadable module with a large thread local section, which would require
+// allocation of a new TLS storage chunk when loaded with dlopen(). We use it
+// to test the reachability of such chunks in LSan tests.
+
+// This must be large enough that it doesn't fit into preallocated static TLS
+// space (see STATIC_TLS_SURPLUS in glibc).
+__thread void *huge_thread_local_array[(1 << 20) / sizeof(void *)]; // NOLINT
+
+extern "C" void **StoreToTLS(void *p) {
+  huge_thread_local_array[0] = p;
+  return &huge_thread_local_array[0];
+}
+#endif  // BUILD_DSO

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/use_tls_pthread_specific_dynamic.cc

@@ -0,0 +1,38 @@
+// Test that dynamically allocated thread-specific storage is included in the root set.
+// RUN: LSAN_BASE="report_objects=1:use_stacks=0:use_registers=0"
+// RUN: %clangxx_lsan %s -o %t
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=0" not %run %t 2>&1 | FileCheck %s
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=1" %run %t 2>&1
+// RUN: %env_lsan_opts="" %run %t 2>&1
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "sanitizer_common/print_address.h"
+
+// From glibc: this many keys are stored in the thread descriptor directly.
+const unsigned PTHREAD_KEY_2NDLEVEL_SIZE = 32;
+
+int main() {
+  static const unsigned kDummyKeysCount = PTHREAD_KEY_2NDLEVEL_SIZE;
+  int res;
+  pthread_key_t dummy_keys[kDummyKeysCount];
+  for (unsigned i = 0; i < kDummyKeysCount; i++) {
+    res = pthread_key_create(&dummy_keys[i], NULL);
+    assert(res == 0);
+  }
+  pthread_key_t key;
+  res = pthread_key_create(&key, NULL);
+  assert(key >= PTHREAD_KEY_2NDLEVEL_SIZE);
+  assert(res == 0);
+  void *p  = malloc(1337);
+  res = pthread_setspecific(key, p);
+  assert(res == 0);
+  print_address("Test alloc: ", 1, p);
+  return 0;
+}
+// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
+// CHECK: LeakSanitizer: detected memory leaks
+// CHECK: [[ADDR]] (1337 bytes)
+// CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer:

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/use_tls_pthread_specific_static.cc

@@ -0,0 +1,32 @@
+// Test that statically allocated thread-specific storage is included in the root set.
+// RUN: LSAN_BASE="report_objects=1:use_stacks=0:use_registers=0"
+// RUN: %clangxx_lsan %s -o %t
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=0" not %run %t 2>&1 | FileCheck %s
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=1" %run %t 2>&1
+// RUN: %env_lsan_opts="" %run %t 2>&1
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "sanitizer_common/print_address.h"
+
+// From glibc: this many keys are stored in the thread descriptor directly.
+const unsigned PTHREAD_KEY_2NDLEVEL_SIZE = 32;
+
+int main() {
+  pthread_key_t key;
+  int res;
+  res = pthread_key_create(&key, NULL);
+  assert(res == 0);
+  assert(key < PTHREAD_KEY_2NDLEVEL_SIZE);
+  void *p = malloc(1337);
+  res = pthread_setspecific(key, p);
+  assert(res == 0);
+  print_address("Test alloc: ", 1, p);
+  return 0;
+}
+// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
+// CHECK: LeakSanitizer: detected memory leaks
+// CHECK: [[ADDR]] (1337 bytes)
+// CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer:

external/llvm-project/compiler-rt/test/lsan/TestCases/Linux/use_tls_static.cc

@@ -0,0 +1,22 @@
+// Test that statically allocated TLS space is included in the root set.
+// RUN: LSAN_BASE="report_objects=1:use_stacks=0:use_registers=0"
+// RUN: %clangxx_lsan %s -o %t
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=0" not %run %t 2>&1 | FileCheck %s
+// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=1" %run %t 2>&1
+// RUN: %env_lsan_opts="" %run %t 2>&1
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "sanitizer_common/print_address.h"
+
+__thread void *tls_var;
+
+int main() {
+  tls_var = malloc(1337);
+  print_address("Test alloc: ", 1, tls_var);
+  return 0;
+}
+// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
+// CHECK: LeakSanitizer: detected memory leaks
+// CHECK: [[ADDR]] (1337 bytes)
+// CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer: