You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
134 lines
4.2 KiB
134 lines
4.2 KiB
2 years ago
|
commit 9d0e30329c23b5ad736fda3f174208c25970dbce
|
||
|
|
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
|
||
|
|
Date: Tue Dec 13 12:28:41 2016 +0000
|
||
|
|
|
||
|
|
elf: Add test case for [BZ #19329]
|
||
|
|
|
||
|
|
Test concurrent dlopen and pthread_create when the loaded modules have
|
||
|
|
TLS. This triggers dl-tls assertion failures more reliably than the
|
||
|
|
nptl/tst-stack4 test.
|
||
|
|
|
||
|
|
The dlopened module has 100 DT_NEEDED dependencies with TLS, they were
|
||
|
|
reused from an existing TLS test. The number of created threads during
|
||
|
|
dlopen depends on filesystem speed and hardware, but at most 3 threads
|
||
|
|
are alive at a time to limit resource usage.
|
||
|
|
|
||
|
|
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
||
|
|
|
||
|
|
Conflicts:
|
||
|
|
elf/Makefile
|
||
|
|
(usual testing differences)
|
||
|
|
|
||
|
|
diff --git a/elf/Makefile b/elf/Makefile
|
||
|
|
index 0995d810b57d0dda..be40e3761cf91c4a 100644
|
||
|
|
--- a/elf/Makefile
|
||
|
|
+++ b/elf/Makefile
|
||
|
|
@@ -210,7 +210,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
|
||
|
|
tst-tls-ie tst-tls-ie-dlmopen \
|
||
|
|
argv0test \
|
||
|
|
tst-glibc-hwcaps tst-glibc-hwcaps-prepend tst-glibc-hwcaps-mask \
|
||
|
|
- tst-tls20
|
||
|
|
+ tst-tls20 tst-tls21
|
||
|
|
# reldep9
|
||
|
|
tests-internal += loadtest unload unload2 circleload1 \
|
||
|
|
neededtest neededtest2 neededtest3 neededtest4 \
|
||
|
|
@@ -333,7 +333,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
|
||
|
|
libmarkermod2-1 libmarkermod2-2 \
|
||
|
|
libmarkermod3-1 libmarkermod3-2 libmarkermod3-3 \
|
||
|
|
libmarkermod4-1 libmarkermod4-2 libmarkermod4-3 libmarkermod4-4 \
|
||
|
|
- tst-tls20mod-bad
|
||
|
|
+ tst-tls20mod-bad tst-tls21mod \
|
||
|
|
|
||
|
|
# Most modules build with _ISOMAC defined, but those filtered out
|
||
|
|
# depend on internal headers.
|
||
|
|
@@ -1836,3 +1836,8 @@ tst-tls20mod-bad.so-no-z-defs = yes
|
||
|
|
$(objpfx)tst-tls20: $(libdl) $(shared-thread-library)
|
||
|
|
$(objpfx)tst-tls20.out: $(objpfx)tst-tls20mod-bad.so \
|
||
|
|
$(tst-tls-many-dynamic-modules:%=$(objpfx)%.so)
|
||
|
|
+
|
||
|
|
+# Reuses tst-tls-many-dynamic-modules
|
||
|
|
+$(objpfx)tst-tls21: $(libdl) $(shared-thread-library)
|
||
|
|
+$(objpfx)tst-tls21.out: $(objpfx)tst-tls21mod.so
|
||
|
|
+$(objpfx)tst-tls21mod.so: $(tst-tls-many-dynamic-modules:%=$(objpfx)%.so)
|
||
|
|
diff --git a/elf/tst-tls21.c b/elf/tst-tls21.c
|
||
|
|
new file mode 100644
|
||
|
|
index 0000000000000000..560bf5813a746417
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/elf/tst-tls21.c
|
||
|
|
@@ -0,0 +1,68 @@
|
||
|
|
+/* Test concurrent dlopen and pthread_create: BZ 19329.
|
||
|
|
+ Copyright (C) 2021 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
|
||
|
|
+ <http://www.gnu.org/licenses/>. */
|
||
|
|
+
|
||
|
|
+#include <dlfcn.h>
|
||
|
|
+#include <pthread.h>
|
||
|
|
+#include <stdio.h>
|
||
|
|
+#include <stdatomic.h>
|
||
|
|
+#include <support/xdlfcn.h>
|
||
|
|
+#include <support/xthread.h>
|
||
|
|
+
|
||
|
|
+#define THREADS 10000
|
||
|
|
+
|
||
|
|
+static atomic_int done;
|
||
|
|
+
|
||
|
|
+static void *
|
||
|
|
+start (void *a)
|
||
|
|
+{
|
||
|
|
+ /* Load a module with many dependencies that each have TLS. */
|
||
|
|
+ xdlopen ("tst-tls21mod.so", RTLD_LAZY);
|
||
|
|
+ atomic_store_explicit (&done, 1, memory_order_release);
|
||
|
|
+ return 0;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+static void *
|
||
|
|
+nop (void *a)
|
||
|
|
+{
|
||
|
|
+ return 0;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+static int
|
||
|
|
+do_test (void)
|
||
|
|
+{
|
||
|
|
+ pthread_t t1, t2;
|
||
|
|
+ int i;
|
||
|
|
+
|
||
|
|
+ /* Load a module with lots of dependencies and TLS. */
|
||
|
|
+ t1 = xpthread_create (0, start, 0);
|
||
|
|
+
|
||
|
|
+ /* Concurrently create lots of threads until dlopen is observably done. */
|
||
|
|
+ for (i = 0; i < THREADS; i++)
|
||
|
|
+ {
|
||
|
|
+ if (atomic_load_explicit (&done, memory_order_acquire) != 0)
|
||
|
|
+ break;
|
||
|
|
+ t2 = xpthread_create (0, nop, 0);
|
||
|
|
+ xpthread_join (t2);
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ xpthread_join (t1);
|
||
|
|
+ printf ("threads created during dlopen: %d\n", i);
|
||
|
|
+ return 0;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+#include <support/test-driver.c>
|
||
|
|
diff --git a/elf/tst-tls21mod.c b/elf/tst-tls21mod.c
|
||
|
|
new file mode 100644
|
||
|
|
index 0000000000000000..206ece4fb34622a9
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/elf/tst-tls21mod.c
|
||
|
|
@@ -0,0 +1 @@
|
||
|
|
+int __thread x;
|