Szabolcs Nagy c6b0165327 elf: Fix failure handling in _dl_map_object_from_fd
The failure paths in _dl_map_object_from_fd did not clean every
potentially allocated resource up.

Handle l_phdr, l_libname and mapped segments in the common failure
handling code.

There are various bits that may not be cleaned properly on failure
(e.g. executable stack, incomplete dl_map_segments) fixing those
need further changes.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2020-12-15 10:13:46 +00:00
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