https://sourceware.org/bugzilla/show_bug.cgi?id=29870
Bug ID: 29870 Summary: objdump SEGV in display_debug_lines_decoded dwarf.c:5524 Product: binutils Version: 2.39 Status: UNCONFIRMED Severity: normal Priority: P2 Component: binutils Assignee: unassigned at sourceware dot org Reporter: 13579and24680 at gmail dot com Target Milestone: --- Created attachment 14490 --> https://sourceware.org/bugzilla/attachment.cgi?id=14490&action=edit Generated by my fuzzer and afl-tmin # version $ ./binutils-gdb/binutils/objdump --version GNU objdump (GNU Binutils) 2.39.50.20221210 Copyright (C) 2022 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or (at your option) any later version. This program has absolutely no warranty. --------------------------------------------------------------------- # make $ git clone git://sourceware.org/git/binutils-gdb.git $ cd binutils-gdb $ ./configure $ make --------------------------------------------------------------------- # crash $ ./binutils-gdb/binutils/objdump -WL poc ./binutils-gdb/binutils/objdump: warning: poc has a section extending past end of file poc: file format elf64-little Contents of the .debug_line section: ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb/binutils/objdump: Warning: Unrecognized form: 0x30 (null): File name Line number Starting address View Stmt fish: Job 1, './binutils-gdb/binutils/objdump…' terminated by signal SIGSEGV (Address boundary error) --------------------------------------------------------------------- # ASAN report $ ./binutils-gdb_asan_no_fuzz/binutils/objdump -WL poc ./binutils-gdb_asan_no_fuzz/binutils/objdump: warning: poc has a section extending past end of file poc: file format elf64-little Contents of the .debug_line section: ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 ./binutils-gdb_asan_no_fuzz/binutils/objdump: Warning: Unrecognized form: 0x30 (null): File name Line number Starting address View Stmt AddressSanitizer:DEADLYSIGNAL ================================================================= ==2950647==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7fe9cffcc6e5 bp 0x7fffa374a870 sp 0x7fffa3749fe8 T0) ==2950647==The signal is caused by a READ memory access. ==2950647==Hint: address points to the zero page. #0 0x7fe9cffcc6e4 (/lib/x86_64-linux-gnu/libc.so.6+0x1886e4) #1 0x7fe9d00a390b in __interceptor_strlen ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:352 #2 0x555ec916594d in display_debug_lines_decoded dwarf.c:5524 #3 0x555ec9166061 in display_debug_lines dwarf.c:5655 #4 0x555ec913b8c4 in dump_dwarf_section objdump.c:4396 #5 0x555ec928a15d in bfd_map_over_sections /home/a13579/fuzz_binutils-gdb/binutils-gdb_asan_no_fuzz/bfd/section.c:1366 #6 0x555ec913baf3 in dump_dwarf objdump.c:4434 #7 0x555ec9142110 in dump_bfd objdump.c:5636 #8 0x555ec91424e5 in display_object_bfd objdump.c:5715 #9 0x555ec9142816 in display_any_bfd objdump.c:5801 #10 0x555ec9142890 in display_file objdump.c:5822 #11 0x555ec91441b9 in main objdump.c:6230 #12 0x7fe9cfe68082 in __libc_start_main ../csu/libc-start.c:308 #13 0x555ec912839d in _start (/home/a13579/fuzz_binutils-gdb/binutils-gdb_asan_no_fuzz/binutils/objdump+0x13b39d) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/libc.so.6+0x1886e4) ==2950647==ABORTING -- You are receiving this mail because: You are on the CC list for the bug.