https://sourceware.org/bugzilla/show_bug.cgi?id=33475
Bug ID: 33475
Summary: [BUG] A SEGV in elf_append_rela at elflink.c:15653
Product: binutils
Version: 2.45
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: yfzhang23 at stu dot pku.edu.cn
Target Milestone: ---
Created attachment 16373
--> https://sourceware.org/bugzilla/attachment.cgi?id=16373&action=edit
POC
## Description
- Version: Binutils 2.45 with patches in bug 33451, bug 33455, and bug 33457.
- 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
==149174==ERROR: AddressSanitizer: SEGV on unknown address 0x0000000000a0 (pc
0x00000078c5cf bp 0x7ffd471d3bd0 sp 0x7ffd471d3b10 T0)
==149174==The signal is caused by a READ memory access.
==149174==Hint: address points to the zero page.
#0 0x78c5cf in elf_append_rela
/benchmark/bin/binutils-2.45/bfd/elflink.c:15653:22
#1 0x638b24 in elf_x86_64_relocate_section
/benchmark/bin/binutils-2.45/bfd/elf64-x86-64.c:4631:5
#2 0x7696f4 in elf_link_input_bfd
/benchmark/bin/binutils-2.45/bfd/elflink.c:11926:10
#3 0x75b539 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 0x7f6ae1dbf082 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:15653:22 in elf_append_rela
==149174==ABORTING
## Credit
Reported by Yifan Zhang, [PLL](https://pl.cs.pku.edu.cn/en/)
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