pthread: Move some join tests from nptl to sysdeps/pthread

So they can be checked with htl too.

7 files changed, 516 insertions, 0 deletions

diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index c102f45b6a..396f2b18bf 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -51,6 +51,7 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
 	 tst-cond14 tst-cond15 tst-cond16 tst-cond17 tst-cond18 tst-cond19 \
 	 tst-cond23 tst-cond24 tst-cond25 \
 	 tst-cond-except \
+	 tst-join1 tst-join4 tst-join5 tst-join6 tst-join7 \
 	 tst-key1 tst-key2 tst-key3 tst-key4 \
 	 tst-mutex1 tst-mutex2 tst-mutex3 tst-mutex4 tst-mutex6 tst-mutex10 \
 	 tst-once1 tst-once2 tst-once3 tst-once4 \
@@ -62,6 +63,8 @@ tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
 
 tests += tst-oncex3 tst-oncex4
 
+modules-names += tst-join7mod
+
 ifeq ($(build-shared),yes)
 tests-static += tst-cond8-static
 tests += tst-cond8-static
@@ -70,4 +73,9 @@ endif
 CFLAGS-tst-oncex3.c += -fexceptions
 CFLAGS-tst-oncex4.c += -fexceptions
 
+$(objpfx)tst-join7: $(libdl) $(shared-thread-library)
+$(objpfx)tst-join7.out: $(objpfx)tst-join7mod.so
+$(objpfx)tst-join7mod.so: $(shared-thread-library)
+LDFLAGS-tst-join7mod.so = -Wl,-soname,tst-join7mod.so
+
 endif
diff --git a/sysdeps/pthread/tst-join1.c b/sysdeps/pthread/tst-join1.c
new file mode 100644
index 0000000000..05bf5e4faa
--- /dev/null
+++ b/sysdeps/pthread/tst-join1.c
@@ -0,0 +1,82 @@
+/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+
+
+static void *
+tf (void *arg)
+{
+  pthread_t mh = (pthread_t) arg;
+  void *result;
+
+  if (pthread_mutex_unlock (&lock) != 0)
+    {
+      puts ("unlock failed");
+      exit (1);
+    }
+
+  if (pthread_join (mh, &result) != 0)
+    {
+      puts ("join failed");
+      exit (1);
+    }
+
+  if (result != (void *) 42l)
+    {
+      printf ("result wrong: expected %p, got %p\n", (void *) 42, result);
+      exit (1);
+    }
+
+  exit (0);
+}
+
+
+static int
+do_test (void)
+{
+  pthread_t th;
+
+  if (pthread_mutex_lock (&lock) != 0)
+    {
+      puts ("1st lock failed");
+      exit (1);
+    }
+
+  if (pthread_create (&th, NULL, tf, (void *) pthread_self ()) != 0)
+    {
+      puts ("create failed");
+      exit (1);
+    }
+
+  if (pthread_mutex_lock (&lock) != 0)
+    {
+      puts ("2nd lock failed");
+      exit (1);
+    }
+
+  pthread_exit ((void *) 42);
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/sysdeps/pthread/tst-join4.c b/sysdeps/pthread/tst-join4.c
new file mode 100644
index 0000000000..18af45aaf8
--- /dev/null
+++ b/sysdeps/pthread/tst-join4.c
@@ -0,0 +1,124 @@
+/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static pthread_barrier_t bar;
+
+
+static void *
+tf (void *arg)
+{
+  if (pthread_barrier_wait (&bar) != 0)
+    {
+      puts ("tf: barrier_wait failed");
+      exit (1);
+    }
+
+  return (void *) 1l;
+}
+
+
+static int
+do_test (void)
+{
+  if (pthread_barrier_init (&bar, NULL, 3) != 0)
+    {
+      puts ("barrier_init failed");
+      exit (1);
+    }
+
+  pthread_attr_t a;
+
+  if (pthread_attr_init (&a) != 0)
+    {
+      puts ("attr_init failed");
+      exit (1);
+    }
+
+  if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0)
+    {
+      puts ("attr_setstacksize failed");
+      return 1;
+    }
+
+  pthread_t th[2];
+
+  if (pthread_create (&th[0], &a, tf, NULL) != 0)
+    {
+      puts ("1st create failed");
+      exit (1);
+    }
+
+  if (pthread_attr_setdetachstate (&a, PTHREAD_CREATE_DETACHED) != 0)
+    {
+      puts ("attr_setdetachstate failed");
+      exit (1);
+    }
+
+  if (pthread_create (&th[1], &a, tf, NULL) != 0)
+    {
+      puts ("1st create failed");
+      exit (1);
+    }
+
+  if (pthread_attr_destroy (&a) != 0)
+    {
+      puts ("attr_destroy failed");
+      exit (1);
+    }
+
+  if (pthread_detach (th[0]) != 0)
+    {
+      puts ("could not detach 1st thread");
+      exit (1);
+    }
+
+  int err = pthread_detach (th[0]);
+  if (err == 0)
+    {
+      puts ("second detach of 1st thread succeeded");
+      exit (1);
+    }
+  if (err != EINVAL)
+    {
+      printf ("second detach of 1st thread returned %d, not EINVAL\n", err);
+      exit (1);
+    }
+
+  err = pthread_detach (th[1]);
+  if (err == 0)
+    {
+      puts ("detach of 2nd thread succeeded");
+      exit (1);
+    }
+  if (err != EINVAL)
+    {
+      printf ("detach of 2nd thread returned %d, not EINVAL\n", err);
+      exit (1);
+    }
+
+  exit (0);
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/sysdeps/pthread/tst-join5.c b/sysdeps/pthread/tst-join5.c
new file mode 100644
index 0000000000..acdc365c05
--- /dev/null
+++ b/sysdeps/pthread/tst-join5.c
@@ -0,0 +1,191 @@
+/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <support/check.h>
+#include <support/timespec.h>
+#include <support/xthread.h>
+#include <support/xtime.h>
+
+static void
+wait_code (void)
+{
+  struct timespec ts = { .tv_sec = 0, .tv_nsec = 200000000 };
+  while (nanosleep (&ts, &ts) < 0)
+    ;
+}
+
+
+#ifdef WAIT_IN_CHILD
+static pthread_barrier_t b;
+#endif
+
+static int
+thread_join (pthread_t thread, void **retval)
+{
+#if defined USE_PTHREAD_TIMEDJOIN_NP
+  const struct timespec ts = timespec_add (xclock_now (CLOCK_REALTIME),
+                                           make_timespec (1000, 0));
+  return pthread_timedjoin_np (thread, retval, &ts);
+#elif defined USE_PTHREAD_CLOCKJOIN_NP_REALTIME
+  const struct timespec ts = timespec_add (xclock_now (CLOCK_REALTIME),
+                                           make_timespec (1000, 0));
+  return pthread_clockjoin_np (thread, retval, CLOCK_REALTIME, &ts);
+#elif defined USE_PTHREAD_CLOCKJOIN_NP_MONOTONIC
+  const struct timespec ts = timespec_add (xclock_now (CLOCK_MONOTONIC),
+                                           make_timespec (1000, 0));
+  return pthread_clockjoin_np (thread, retval, CLOCK_MONOTONIC, &ts);
+#else
+  return pthread_join (thread, retval);
+#endif
+}
+
+
+static void *
+tf1 (void *arg)
+{
+#ifdef WAIT_IN_CHILD
+  xpthread_barrier_wait (&b);
+
+  wait_code ();
+#endif
+
+  thread_join ((pthread_t) arg, NULL);
+
+  exit (42);
+}
+
+
+static void *
+tf2 (void *arg)
+{
+#ifdef WAIT_IN_CHILD
+  xpthread_barrier_wait (&b);
+
+  wait_code ();
+#endif
+
+  thread_join ((pthread_t) arg, NULL);
+
+  exit (43);
+}
+
+
+static int
+do_test (void)
+{
+#ifdef WAIT_IN_CHILD
+  xpthread_barrier_init (&b, NULL, 2);
+#endif
+
+  pthread_t th;
+
+  int err = thread_join (pthread_self (), NULL);
+  if (err == 0)
+    {
+      puts ("1st circular join succeeded");
+      return 1;
+    }
+  if (err != EDEADLK)
+    {
+      printf ("1st circular join %d, not EDEADLK\n", err);
+      return 1;
+    }
+
+  th = xpthread_create (NULL, tf1, (void *) pthread_self ());
+
+#ifndef WAIT_IN_CHILD
+  wait_code ();
+#endif
+
+  xpthread_cancel (th);
+
+#ifdef WAIT_IN_CHILD
+  xpthread_barrier_wait (&b);
+#endif
+
+  void *r;
+  err = thread_join (th, &r);
+  if (err != 0)
+    {
+      printf ("cannot join 1st thread: %d\n", err);
+      return 1;
+    }
+  if (r != PTHREAD_CANCELED)
+    {
+      puts ("1st thread not canceled");
+      return 1;
+    }
+
+  err = thread_join (pthread_self (), NULL);
+  if (err == 0)
+    {
+      puts ("2nd circular join succeeded");
+      return 1;
+    }
+  if (err != EDEADLK)
+    {
+      printf ("2nd circular join %d, not EDEADLK\n", err);
+      return 1;
+    }
+
+  th = xpthread_create (NULL, tf2, (void *) pthread_self ());
+
+#ifndef WAIT_IN_CHILD
+  wait_code ();
+#endif
+
+  xpthread_cancel (th);
+
+#ifdef WAIT_IN_CHILD
+  xpthread_barrier_wait (&b);
+#endif
+
+  if (thread_join (th, &r) != 0)
+    {
+      puts ("cannot join 2nd thread");
+      return 1;
+    }
+  if (r != PTHREAD_CANCELED)
+    {
+      puts ("2nd thread not canceled");
+      return 1;
+    }
+
+  err = thread_join (pthread_self (), NULL);
+  if (err == 0)
+    {
+      puts ("3rd circular join succeeded");
+      return 1;
+    }
+  if (err != EDEADLK)
+    {
+      printf ("3rd circular join %d, not EDEADLK\n", err);
+      return 1;
+    }
+
+  return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysdeps/pthread/tst-join6.c b/sysdeps/pthread/tst-join6.c
new file mode 100644
index 0000000000..0c9e7c056b
--- /dev/null
+++ b/sysdeps/pthread/tst-join6.c
@@ -0,0 +1,2 @@
+#define WAIT_IN_CHILD 1
+#include "tst-join5.c"
diff --git a/sysdeps/pthread/tst-join7.c b/sysdeps/pthread/tst-join7.c
new file mode 100644
index 0000000000..c077d3cee3
--- /dev/null
+++ b/sysdeps/pthread/tst-join7.c
@@ -0,0 +1,46 @@
+/* Verify that TLS access in separate thread in a dlopened library does not
+   deadlock.
+   Copyright (C) 2015-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <dlfcn.h>
+
+/* When one dynamically loads a module, which spawns a thread to perform some
+   activities, it could be possible that TLS storage is accessed for the first
+   time in that thread.  This results in an allocation request within the
+   thread, which could result in an attempt to take the rtld load_lock.  This
+   is a problem because it would then deadlock with the dlopen (which owns the
+   lock), if the main thread is waiting for the spawned thread to exit.  We can
+   at least ensure that this problem does not occur due to accesses within
+   libc.so, by marking TLS variables within libc.so as IE.  The problem of an
+   arbitrary variable being accessed and constructed within such a thread still
+   exists but this test case does not verify that.  */
+
+int
+do_test (void)
+{
+  void *f = dlopen ("tst-join7mod.so", RTLD_NOW | RTLD_GLOBAL);
+  if (f)
+    dlclose (f);
+  else
+    return 1;
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/sysdeps/pthread/tst-join7mod.c b/sysdeps/pthread/tst-join7mod.c
new file mode 100644
index 0000000000..934087dcc6
--- /dev/null
+++ b/sysdeps/pthread/tst-join7mod.c
@@ -0,0 +1,63 @@
+/* Verify that TLS access in separate thread in a dlopened library does not
+   deadlock - the module.
+   Copyright (C) 2015-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <atomic.h>
+
+static pthread_t th;
+static int running = 1;
+
+static void *
+test_run (void *p)
+{
+  while (atomic_load_relaxed (&running))
+    printf ("Test running\n");
+  printf ("Test finished\n");
+  return NULL;
+}
+
+static void __attribute__ ((constructor))
+do_init (void)
+{
+  int ret = pthread_create (&th, NULL, test_run, NULL);
+
+  if (ret != 0)
+    {
+      printf ("failed to create thread: %s (%d)\n", strerror (ret), ret);
+      exit (1);
+    }
+}
+
+static void __attribute__ ((destructor))
+do_end (void)
+{
+  atomic_store_relaxed (&running, 0);
+  int ret = pthread_join (th, NULL);
+
+  if (ret != 0)
+    {
+      printf ("pthread_join: %s(%d)\n", strerror (ret), ret);
+      exit (1);
+    }
+
+  printf ("Thread joined\n");
+}