https://sourceware.org/bugzilla/show_bug.cgi?id=33450
Bug ID: 33450
Summary: A SEGV in get_link_hash_entry at elflink.c:115
Product: binutils
Version: 2.45
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: yfzhang23 at stu dot pku.edu.cn
Target Milestone: ---
Created attachment 16346
--> https://sourceware.org/bugzilla/attachment.cgi?id=16346&action=edit
POC
## Description
- Version: Binutils 2.45
- Environment: Ubuntu 20.04.6 LTS, Clang 12.0.0
## Steps to reproduce
export CC="clang"
export CFLAGS="-g -fsanitize=address"
./configure
make -j
./ld/ld-new --gc-sections --no-print-gc-sections -w $POC
## Sanitizer output
==139056==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x00000071b336
bp 0x7ffc2ffb4a20 sp 0x7ffc2ffb49c0 T0)
==139056==The signal is caused by a READ memory access.
==139056==Hint: this fault was caused by a dereference of a high value address
(see register values below). Disassemble the provided pc to learn which
register was used.
#0 0x71b336 in get_link_hash_entry
/benchmark/bin/binutils-2.45/bfd/elflink.c:115:18
#1 0x79fef6 in set_symbol_value
/benchmark/bin/binutils-2.45/bfd/elflink.c:9159:7
#2 0x769253 in elf_link_input_bfd
/benchmark/bin/binutils-2.45/bfd/elflink.c:11865:5
#3 0x75b599 in bfd_elf_final_link
/benchmark/bin/binutils-2.45/bfd/elflink.c:13185:11
#4 0x545133 in ldwrite /benchmark/bin/binutils-2.45/ld/ldwrite.c:548:8
#5 0x53cc51 in main /benchmark/bin/binutils-2.45/ld/./ldmain.c:912:3
#6 0x7f59a62b9082 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x24082)
#7 0x41d6ad in _start (/benchmark/bin/binutils-2.45/ld/ld-new+0x41d6ad)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
/benchmark/bin/binutils-2.45/bfd/elflink.c:115:18 in get_link_hash_entry
==139056==ABORTING
## Credit
Reported by Yifan Zhang, [PLL](https://pl.cs.pku.edu.cn/en/)
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