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authorUlrich Drepper <drepper@redhat.com>2007-09-18 19:20:56 +0000
committerUlrich Drepper <drepper@redhat.com>2007-09-18 19:20:56 +0000
commitb90395e6e9479e06ada7294044aaa150a094150f (patch)
treeb743ab6c481685f996e700bf24dca01e61258731 /elf/dl-runtime.c
parent874aa52349cc111d1f6ea5dff24bb14c306714e0 (diff)
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* sysdeps/generic/ldsodefs.h (DL_LOOKUP_GSCOPE_LOCK): New definition.
* elf/dl-runtime.c (_dl_fixup, _dl_profile_fixup): Or in DL_LOOKUP_GSCOPE_LOCK into flags after THREAD_GSCOPE_SET_FLAG (). * elf/dl-sym.c (do_sym): Likewise. * include/link.h (struct link_map): Add l_serial field. * elf/dl-object.c (_dl_new_object): Initialize l_serial. * elf/dl-lookup.c (add_dependency): Add flags argument. Remember map->l_serial, if DL_LOOKUP_GSCOPE_LOCK is among flags, use THREAD_GSCOPE_RESET_FLAG before and THREAD_GSCOPE_SET_FLAG after __rtld_lock_lock_recursive (GL(dl_load_lock)) to avoid deadlock. Don't dereference map until it has been found on some list. If map->l_serial changed, return -1.
Diffstat (limited to 'elf/dl-runtime.c')
-rw-r--r--elf/dl-runtime.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
index ee2b8b5..968e293 100644
--- a/elf/dl-runtime.c
+++ b/elf/dl-runtime.c
@@ -100,7 +100,10 @@ _dl_fixup (
we are not using any threads (yet). */
int flags = DL_LOOKUP_ADD_DEPENDENCY;
if (!RTLD_SINGLE_THREAD_P)
- THREAD_GSCOPE_SET_FLAG ();
+ {
+ THREAD_GSCOPE_SET_FLAG ();
+ flags |= DL_LOOKUP_GSCOPE_LOCK;
+ }
result = _dl_lookup_symbol_x (strtab + sym->st_name, l, &sym, l->l_scope,
version, ELF_RTYPE_CLASS_PLT, flags, NULL);
@@ -192,7 +195,10 @@ _dl_profile_fixup (
we are not using any threads (yet). */
int flags = DL_LOOKUP_ADD_DEPENDENCY;
if (!RTLD_SINGLE_THREAD_P)
- THREAD_GSCOPE_SET_FLAG ();
+ {
+ THREAD_GSCOPE_SET_FLAG ();
+ flags |= DL_LOOKUP_GSCOPE_LOCK;
+ }
result = _dl_lookup_symbol_x (strtab + refsym->st_name, l,
&defsym, l->l_scope, version,