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authorBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2011-06-14 16:48:51 +0200
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2011-06-14 16:48:51 +0200
commit6b76a7129903ab3726ec0217349b526262bec3ac (patch)
tree09661a1ede43550cdb008245055ca6c7cb864f8d
parent0100056707c0ca5c51bb0b8d88612a407be09ef1 (diff)
libdl: search for ELF_RTYPE_CLASS_DLSYM in dlsym()
On FDPIC platforms, functions are passed by function descriptor, not by pointers. If you don't specify ELF_RTYPE_CLASS_DLSYM when calling _dl_find_hash() the return value from dlsym() will be a pointer not a function descriptor, crashing the program. The bug was introduced when TLS support was added in 534661b91c98492995274c364c8177c45efc63db Closes bug#3433 Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
-rw-r--r--ldso/libdl/libdl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ldso/libdl/libdl.c b/ldso/libdl/libdl.c
index 52c77b00a..f59889c99 100644
--- a/ldso/libdl/libdl.c
+++ b/ldso/libdl/libdl.c
@@ -667,7 +667,7 @@ void *dlsym(void *vhandle, const char *name)
tpnt = NULL;
if (handle == _dl_symbol_tables)
tpnt = handle->dyn; /* Only search RTLD_GLOBAL objs if global object */
- ret = _dl_find_hash(name2, handle, tpnt, 0, &sym_ref);
+ ret = _dl_find_hash(name2, handle, tpnt, ELF_RTYPE_CLASS_DLSYM, &sym_ref);
#if defined(USE_TLS) && USE_TLS && defined SHARED
if (sym_ref.tpnt) {