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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> | 2011-06-29 19:23:05 +0200 |
| commit | ae9fec983c95a6f0055c4ee477ac7f30e569cf7d (patch) | |
| tree | 461011c71ec4ac16379717944dadb66c767bd148 | |
| parent | e1420eca7374cd8f583e9d774c890645a205aaee (diff) | |
| download | uClibc-alpine-ae9fec983c95a6f0055c4ee477ac7f30e569cf7d.tar.bz2 uClibc-alpine-ae9fec983c95a6f0055c4ee477ac7f30e569cf7d.tar.xz | |
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.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) { |