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| author | Maxim Ostapenko <m.ostapenko@partner.samsung.com> | 2015-08-10 10:47:54 +0300 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2015-08-11 10:13:22 +0200 |
| commit | f25238ffe0455013174438376b3ee88df496f9d1 (patch) | |
| tree | 6cd3e27f694193ddc4f45258d09f1f4fb9f17801 /elf/Makefile | |
| parent | dc8a7ff24dfd1fd97a50b4b83a715958b31e4b92 (diff) | |
| download | glibc-f25238ffe0455013174438376b3ee88df496f9d1.tar.gz | |
Clear DF_1_NODELETE flag only for failed to load library.
https://sourceware.org/bugzilla/show_bug.cgi?id=18778
If dlopen fails to load an object that has triggered loading libpthread it
causes ld.so to unload libpthread because its DF_1_NODELETE flags has been
forcefully cleared. The next call to __rtdl_unlock_lock_recursive will crash
since pthread_mutex_unlock no longer exists.
This patch moves l->l_flags_1 &= ~DF_1_NODELETE out of loop through all loaded
libraries and performs the action only on inconsistent one.
[BZ #18778]
* elf/Makefile (tests): Add Add tst-nodelete2.
(modules-names): Add tst-nodelete2mod.
(tst-nodelete2mod.so-no-z-defs): New.
($(objpfx)tst-nodelete2): Likewise.
($(objpfx)tst-nodelete2.out): Likewise.
(LDFLAGS-tst-nodelete2): Likewise.
* elf/dl-close.c (_dl_close_worker): Move DF_1_NODELETE clearing
out of loop through all loaded libraries.
* elf/tst-nodelete2.c: New file.
* elf/tst-nodelete2mod.c: Likewise.
Diffstat (limited to 'elf/Makefile')
| -rw-r--r-- | elf/Makefile | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/elf/Makefile b/elf/Makefile index 4ceeaf89be..71a18a1ec4 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -148,7 +148,8 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \ tst-unique1 tst-unique2 $(if $(CXX),tst-unique3 tst-unique4 \ tst-nodelete) \ tst-initorder tst-initorder2 tst-relsort1 tst-null-argv \ - tst-ptrguard1 tst-tlsalign tst-tlsalign-extern tst-nodelete-opened + tst-ptrguard1 tst-tlsalign tst-tlsalign-extern tst-nodelete-opened \ + tst-nodelete2 # reldep9 ifeq ($(build-hardcoded-path-in-tests),yes) tests += tst-dlopen-aout @@ -218,7 +219,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ tst-initorder2d \ tst-relsort1mod1 tst-relsort1mod2 tst-array2dep \ tst-array5dep tst-null-argv-lib \ - tst-tlsalign-lib tst-nodelete-opened-lib + tst-tlsalign-lib tst-nodelete-opened-lib tst-nodelete2mod ifeq (yes,$(have-protected-data)) modules-names += tst-protected1moda tst-protected1modb tests += tst-protected1a tst-protected1b @@ -594,6 +595,7 @@ tst-auditmod9b.so-no-z-defs = yes tst-nodelete-uniquemod.so-no-z-defs = yes tst-nodelete-rtldmod.so-no-z-defs = yes tst-nodelete-zmod.so-no-z-defs = yes +tst-nodelete2mod.so-no-z-defs = yes ifeq ($(build-shared),yes) # Build all the modules even when not actually running test programs. @@ -1164,6 +1166,11 @@ $(objpfx)tst-nodelete.out: $(objpfx)tst-nodelete-uniquemod.so \ LDFLAGS-tst-nodelete = -rdynamic LDFLAGS-tst-nodelete-zmod.so = -Wl,--enable-new-dtags,-z,nodelete +$(objpfx)tst-nodelete2: $(libdl) +$(objpfx)tst-nodelete2.out: $(objpfx)tst-nodelete2mod.so + +LDFLAGS-tst-nodelete2 = -rdynamic + $(objpfx)tst-initorder-cmp.out: tst-initorder.exp $(objpfx)tst-initorder.out cmp $^ > $@; \ $(evaluate-test) |