https://sourceware.org/bugzilla/show_bug.cgi?id=34786
Bug ID: 34786
Summary: GNU ld aborts on an unknown local section code in an
a.out relocation
Product: binutils
Version: 2.46
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: basavesh.shivakumar at wsu dot edu
Target Milestone: ---
Created attachment 17106
--> https://sourceware.org/bugzilla/attachment.cgi?id=17106&action=edit
reproducer
I'm reporting this bug on behalf of my team: Emily West, Dr. Swarn Priya, Dr.
Peng Gao and Dr. Basavesh Ammanaghatta Shivakumar.
Summary
=======
GNU ld routes an unknown local standard-a.out relocation section code to
abort() in bfd/aoutx.h:aout_reloc_index_to_section on current head and 2.46;
valid N_ABS, N_TEXT, N_DATA, and N_BSS controls link.
Reproduction
============
1. Download and extract
`bfd-aout-ns32k-unknown-local-section-abort-reproducer.tar.gz`.
2. Run the following command with an ld.bfd or all-target `ld-new` binary that
supports the emulation used by the reproducer:
BFD=/path/to/ld-new sh repro.sh
The archive contains the fixed input files, independent controls, helper
scripts needed by `repro.sh`, and their checksums. The script uses a temporary
directory and does not modify the source tree.
Observed result
===============
GNU ld routes an unknown local standard-a.out relocation section code to
abort() in bfd/aoutx.h:aout_reloc_index_to_section on current head and 2.46;
valid N_ABS, N_TEXT, N_DATA, and N_BSS controls link.
Expected result
===============
GNU ld should either produce the correct output or reject the input with a
normal diagnostic. It should not crash, hang, execute undefined behavior, read
outside an input-derived allocation, or produce the described malformed
output.
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