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| author | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2011-06-14 16:48:51 +0200 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2011-06-14 16:48:51 +0200 |
| commit | 6b76a7129903ab3726ec0217349b526262bec3ac (patch) | |
| tree | 09661a1ede43550cdb008245055ca6c7cb864f8d /ldso/libdl | |
| parent | 0100056707c0ca5c51bb0b8d88612a407be09ef1 (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>
Diffstat (limited to 'ldso/libdl')
| -rw-r--r-- | ldso/libdl/libdl.c | 2 |
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) { |