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174 lines
6.1 KiB
174 lines
6.1 KiB
Partial backport of: |
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commit 7d3db434f910c23591f748a6d0ac3548af1048bb |
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Author: Florian Weimer <fweimer@redhat.com> |
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Date: Thu Oct 17 08:51:21 2019 +0200 |
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Rename and split elf/tst-dlopen-aout collection of tests |
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From the beginning, elf/tst-dlopen-aout has exercised two different |
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bugs: (a) failure to report errors for a dlopen of the executable |
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itself in some cases (bug 24900) and (b) incorrect rollback of the |
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TLS modid allocation in case of a dlopen failure (bug 16634). |
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This commit replaces the test with elf/tst-dlopen-self for (a) and |
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elf/tst-dlopen-tlsmodid for (b). The latter tests use the |
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elf/tst-dlopen-self binaries (or iconv) with dlopen, so they are |
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no longer self-dlopen tests. |
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Tested on x86_64-linux-gnu and i686-linux-gnu, with a toolchain that |
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does not default to PIE. |
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Only the non-PIE, non-container test elf/tst-dlopen-tlsmodid is |
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included. The reason is that the self-dlopen fixes and the PIE TLS |
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modid fix have not been backported, and that container testing support |
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is missing downstream. The test binary is adjusted to tst-tls10 |
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because tst-dlopen-self does not exist in the backport. |
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diff --git a/elf/Makefile b/elf/Makefile |
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index cfd039fc9dfb0be7..c22008b54afc91f5 100644 |
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--- a/elf/Makefile |
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+++ b/elf/Makefile |
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@@ -153,7 +153,7 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \ |
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tst-stackguard1 tst-addr1 tst-thrlock \ |
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tst-unique1 tst-unique2 tst-unique3 tst-unique4 \ |
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tst-initorder tst-initorder2 tst-relsort1 tst-ptrguard1 \ |
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- tst-big-note |
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+ tst-big-note tst-dlopen-tlsmodid |
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# reldep9 |
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test-srcs = tst-pathopt |
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selinux-enabled := $(shell cat /selinux/enforce 2> /dev/null) |
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@@ -1101,6 +1101,9 @@ $(objpfx)tst-addr1: $(libdl) |
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$(objpfx)tst-thrlock: $(libdl) $(shared-thread-library) |
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+$(objpfx)tst-dlopen-tlsmodid: $(libdl) $(shared-thread-library) |
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+$(objpfx)tst-dlopen-tlsmodid.out: $(objpfx)tst-tls10 |
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+ |
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CFLAGS-ifuncmain1pic.c += $(pic-ccflag) |
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CFLAGS-ifuncmain1picstatic.c += $(pic-ccflag) |
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CFLAGS-ifuncmain1staticpic.c += $(pic-ccflag) |
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diff --git a/elf/tst-dlopen-tlsmodid.c b/elf/tst-dlopen-tlsmodid.c |
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new file mode 100644 |
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index 0000000000000000..c5b1c39369aa610c |
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--- /dev/null |
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+++ b/elf/tst-dlopen-tlsmodid.c |
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@@ -0,0 +1,25 @@ |
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+/* Test case for BZ #16634. Non-PIE version. |
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+ |
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+ Verify that incorrectly dlopen()ing an executable without |
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+ __RTLD_OPENEXEC does not cause assertion in ld.so, and that it |
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+ actually results in an error. |
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+ |
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+ Copyright (C) 2014-2019 Free Software Foundation, Inc. |
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+ This file is part of the GNU C Library. |
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+ |
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+ The GNU C Library is free software; you can redistribute it and/or |
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+ modify it under the terms of the GNU Lesser General Public |
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+ License as published by the Free Software Foundation; either |
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+ version 2.1 of the License, or (at your option) any later version. |
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+ |
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+ The GNU C Library is distributed in the hope that it will be useful, |
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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+ Lesser General Public License for more details. |
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+ |
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+ You should have received a copy of the GNU Lesser General Public |
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+ License along with the GNU C Library; if not, see |
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+ <https://www.gnu.org/licenses/>. */ |
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+ |
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+#define TST_DLOPEN_TLSMODID_PATH "tst-tls10" |
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+#include "tst-dlopen-tlsmodid.h" |
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diff --git a/elf/tst-dlopen-tlsmodid.h b/elf/tst-dlopen-tlsmodid.h |
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new file mode 100644 |
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index 0000000000000000..c747cb14911c72fa |
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--- /dev/null |
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+++ b/elf/tst-dlopen-tlsmodid.h |
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@@ -0,0 +1,87 @@ |
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+/* Common code for tst-dlopen-tlsmodid, tst-dlopen-tlsmodid-pie, |
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+ tst-dlopen-tlsmodid-container. |
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+ |
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+ Verify that incorrectly dlopen()ing an executable without |
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+ __RTLD_OPENEXEC does not cause assertion in ld.so, and that it |
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+ actually results in an error. |
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+ |
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+ Copyright (C) 2014-2019 Free Software Foundation, Inc. |
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+ This file is part of the GNU C Library. |
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+ |
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+ The GNU C Library is free software; you can redistribute it and/or |
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+ modify it under the terms of the GNU Lesser General Public |
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+ License as published by the Free Software Foundation; either |
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+ version 2.1 of the License, or (at your option) any later version. |
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+ |
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+ The GNU C Library is distributed in the hope that it will be useful, |
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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+ Lesser General Public License for more details. |
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+ |
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+ You should have received a copy of the GNU Lesser General Public |
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+ License along with the GNU C Library; if not, see |
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+ <https://www.gnu.org/licenses/>. */ |
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+ |
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+/* Before including this file, the macro TST_DLOPEN_TLSMODID_PATH must |
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+ be defined, to specify the path used for the open operation. */ |
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+ |
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+#include <dlfcn.h> |
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+#include <pthread.h> |
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+#include <stdio.h> |
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+#include <stdlib.h> |
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+#include <string.h> |
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+#include <support/check.h> |
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+#include <support/support.h> |
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+#include <support/xthread.h> |
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+ |
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+__thread int x; |
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+ |
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+void * |
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+fn (void *p) |
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+{ |
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+ return p; |
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+} |
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+ |
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+/* Call dlopen and check that fails with an error message indicating |
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+ an attempt to open an ET_EXEC or PIE object. */ |
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+static void |
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+check_dlopen_failure (void) |
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+{ |
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+ void *handle = dlopen (TST_DLOPEN_TLSMODID_PATH, RTLD_LAZY); |
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+ if (handle != NULL) |
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+ FAIL_EXIT1 ("dlopen succeeded unexpectedly: %s", TST_DLOPEN_TLSMODID_PATH); |
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+ |
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+ const char *message = dlerror (); |
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+ TEST_VERIFY_EXIT (message != NULL); |
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+ if ((strstr (message, |
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+ "cannot dynamically load position-independent executable") |
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+ == NULL) |
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+ && strstr (message, "cannot dynamically load executable") == NULL) |
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+ FAIL_EXIT1 ("invalid dlopen error message: \"%s\"", message); |
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+} |
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+ |
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+static int |
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+do_test (int argc, char *argv[]) |
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+{ |
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+ int j; |
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+ |
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+ for (j = 0; j < 100; ++j) |
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+ { |
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+ pthread_t thr; |
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+ |
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+ check_dlopen_failure (); |
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+ |
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+ /* We create threads to force TLS allocation, which triggers |
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+ the original bug i.e. running out of surplus slotinfo entries |
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+ for TLS. */ |
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+ thr = xpthread_create (NULL, fn, NULL); |
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+ xpthread_join (thr); |
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+ } |
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+ |
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+ check_dlopen_failure (); |
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+ |
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+ return 0; |
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+} |
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+ |
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+#define TEST_FUNCTION_ARGV do_test |
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+#include <support/test-driver.c>
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