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authorAlan Modra <amodra@gmail.com>2021-06-11 14:12:07 +0930
committerAlan Modra <amodra@gmail.com>2021-06-11 14:12:07 +0930
commit4de91c10cdd9f5818599578667802320df305d72 (patch)
treea546a8305091b6d1166e2ab3e22b1a2f5f99987b /install-sh
parentf64b9b13ce4bb927f47a1fe0257c3794c6357c8c (diff)
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readelf section reading
This is a followup to git commit 8ff66993e0b5, a patch aimed at segfaults found invoking readelf multiple times with fuzzed objects. In that patch I added code to clear more stashed data early in process_section_headers, along with any stashed section headers. This patch instead relies on clearing out the stash at the end of process_object, making sure that process_object doesn't exit early. The patch also introduces some new wrapper functions. * readelf.c (GET_ELF_SYMBOLS): Delete. Replace with.. (get_elf_symbols): ..this new function throughout. (get_32bit_section_headers): Don't free section_headers. (get_64bit_section_headers): Likewise. (get_section_headers): New function, use throughout in place of 32bit and 64bit variants. (get_dynamic_section): Similarly. (process_section_headers): Don't free filedata memory here. (get_file_header): Don't get section headers here.. (process_object): ..Read them here instead. Don't exit without freeing filedata memory.
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