diff options
Diffstat (limited to 'meta/recipes-core/glibc/glibc/0033-elf-Add-test-case-for-BZ-19329.patch')
| -rw-r--r-- | meta/recipes-core/glibc/glibc/0033-elf-Add-test-case-for-BZ-19329.patch | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/meta/recipes-core/glibc/glibc/0033-elf-Add-test-case-for-BZ-19329.patch b/meta/recipes-core/glibc/glibc/0033-elf-Add-test-case-for-BZ-19329.patch new file mode 100644 index 0000000000..f22e52ea99 --- /dev/null +++ b/meta/recipes-core/glibc/glibc/0033-elf-Add-test-case-for-BZ-19329.patch @@ -0,0 +1,144 @@ +From 9d0e30329c23b5ad736fda3f174208c25970dbce Mon Sep 17 00:00:00 2001 +From: Szabolcs Nagy <szabolcs.nagy@arm.com> +Date: Tue, 13 Dec 2016 12:28:41 +0000 +Subject: [PATCH] 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> +--- + elf/Makefile | 9 ++++-- + elf/tst-tls21.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++ + elf/tst-tls21mod.c | 1 + + 3 files changed, 76 insertions(+), 2 deletions(-) + create mode 100644 elf/tst-tls21.c + create mode 100644 elf/tst-tls21mod.c +--- +Upstream-Status: Backport [https://sourceware.org/git/?p=glibc.git;a=patch;h=9d0e30329c23b5ad736fda3f174208c25970dbce] +Comment: Hunks from elf/Makefile are refreshed as per glibc 2.31 codebase. +Signed-off-by: Akash Hadke <akash.hadke@kpit.com> +Signed-off-by: Akash Hadke <hadkeakash4@gmail.com> +--- +diff --git a/elf/Makefile b/elf/Makefile +index d3e909637a..3241cb6046 100644 +--- a/elf/Makefile ++++ b/elf/Makefile +@@ -201,7 +201,7 @@ + tst-unwind-ctor tst-unwind-main tst-audit13 \ + tst-sonamemove-link tst-sonamemove-dlopen tst-dlopen-tlsmodid \ + tst-dlopen-self tst-auditmany tst-initfinilazyfail tst-dlopenfail \ +- tst-dlopenfail-2 ++ tst-dlopenfail-2 tst-tls21 + # reldep9 + tests-internal += loadtest unload unload2 circleload1 \ + neededtest neededtest2 neededtest3 neededtest4 \ +@@ -312,7 +312,7 @@ + tst-auditmanymod7 tst-auditmanymod8 tst-auditmanymod9 \ + tst-initlazyfailmod tst-finilazyfailmod \ + tst-dlopenfailmod1 tst-dlopenfaillinkmod tst-dlopenfailmod2 \ +- tst-dlopenfailmod3 tst-ldconfig-ld-mod ++ tst-dlopenfailmod3 tst-ldconfig-ld-mod tst-tls21mod + # Most modules build with _ISOMAC defined, but those filtered out + # depend on internal headers. + modules-names-tests = $(filter-out ifuncmod% tst-libc_dlvsym-dso tst-tlsmod%,\ +@@ -1697,5 +1697,10 @@ + $(objpfx)tst-dlopen-nodelete-reloc-mod16.so + LDFLAGS-tst-dlopen-nodelete-reloc-mod17.so = -Wl,--no-as-needed + ++# Reuses tst-tls-many-dynamic-modules ++$(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) ++ + $(objpfx)tst-ldconfig-ld_so_conf-update.out: $(objpfx)tst-ldconfig-ld-mod.so + $(objpfx)tst-ldconfig-ld_so_conf-update: $(libdl) +diff --git a/elf/tst-tls21.c b/elf/tst-tls21.c +new file mode 100644 +index 0000000000..560bf5813a +--- /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 0000000000..206ece4fb3 +--- /dev/null ++++ b/elf/tst-tls21mod.c +@@ -0,0 +1 @@ ++int __thread x; +-- +2.27.0 |