https://sourceware.org/bugzilla/show_bug.cgi?id=33007
Bug ID: 33007
Summary: Segmentation Fault in ld-new due to Unsupported
Relocation Type
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: xdcao.cs at gmail dot com
Target Milestone: ---
Summary
Segmentation Fault in ld-new due to Unsupported Relocation Type
Environment
elfutils version: 0.192
OS: Ubuntu 22.04.5 LTS
Steps to reproduce
# export CFLAGS="-g -O0 -fno-inline -fno-lto -fsanitize=address"
# export CXXFLAGS="-g -O0 -fno-inline -fno-lto -fsanitize=address"
# ./configure --enable-maintainer-mode --disable-debuginfod
# make -j64 & make install
root@c6c01f72391e:# ./ld-new --gc-sections POC
./ld-new: POC: unsupported relocation type 0x82
AddressSanitizer:DEADLYSIGNAL
=================================================================
==848100==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000004 (pc
0x000000c8bfbd bp 0x7fff2e2473a0 sp 0x7fff2e2470f0 T0)
==848100==The signal is caused by a READ memory access.
==848100==Hint: address points to the zero page.
#0 0xc8bfbd in bfd_get_reloc_size
/workspace/new-test/program/binutils-gdb/bfd/./bfd.h:3224:17
#1 0xc8748b in elf_x86_64_scan_relocs
/workspace/new-test/program/binutils-gdb/bfd/elf64-x86-64.c:2555:27
#2 0xd4d733 in _bfd_elf_link_iterate_on_relocs
/workspace/new-test/program/binutils-gdb/bfd/elflink.c:4282:9
#3 0xc6d57c in elf_x86_64_early_size_sections
/workspace/new-test/program/binutils-gdb/bfd/elf64-x86-64.c:3099:6
#4 0xd61507 in bfd_elf_size_dynamic_sections
/workspace/new-test/program/binutils-gdb/bfd/elflink.c:6916:11
#5 0xbc167c in ldelf_before_allocation
/workspace/new-test/program/binutils-gdb/ld/ldelf.c:1840:10
#6 0x50aa2a in lang_process
/workspace/new-test/program/binutils-gdb/ld/ldlang.c:8623:3
#7 0x53aee3 in main
/workspace/new-test/program/binutils-gdb/ld/./ldmain.c:882:3
#8 0x7f82b2d34d8f in __libc_start_call_main
csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#9 0x7f82b2d34e3f in __libc_start_main csu/../csu/libc-start.c:392:3
#10 0x4206f4 in _start (/workspace/new-test/fuzzdir/fz-ld/ld-new+0x4206f4)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
/workspace/new-test/program/binutils-gdb/bfd/./bfd.h:3224:17 in
bfd_get_reloc_size
==848100==ABORTING
POC
https://drive.google.com/file/d/14RVWK8gBGrLzMlev8t2fDXsIZokosak1/view?usp=sharing
Credit
Xiaoguo Li (CUPL)
Xudong Cao (UCAS)
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