Comment #1 on issue 43356 by evv...@gmail.com: elfutils:fuzz-dwfl-core: Misaligned-address in Elf32_cvt_Dyn https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43356#c1
It can be reproduced by downloading the reproducer testcase and passing it to eu-stack: ``` autoreconf -i -f ./configure --enable-maintainer-mode --enable-sanitize-address --enable-sanitize-undefined make -j$(nproc) V=1 wget -O CRASH 'https://oss-fuzz.com/download?testcase_id=6013023414779904' UBSAN_OPTIONS=print_stacktrace=1 LD_LIBRARY_PATH="./libdw;./libelf" ./src/stack --core CRASH gelf_xlate.h:48:1: runtime error: member access within misaligned address 0x7f98edb0206a for type 'struct Elf32_Dyn', which requires 4 byte alignment 0x7f98edb0206a: note: pointer points here 20 20 20 00 00 00 8a 20 20 20 20 00 00 00 10 20 20 20 20 ff 20 20 20 ff ff ff ff 00 00 00 00 00 ^ #0 0x7f98f23ef91f in Elf32_cvt_Dyn /home/vagrant/elfutils/libelf/gelf_xlate.h:48 #1 0x7f98f23ed9f9 in elf32_xlatetom /home/vagrant/elfutils/libelf/elf32_xlatetom.c:104 #2 0x7f98f20eac75 in dwfl_segment_report_module /home/vagrant/elfutils/libdwfl/dwfl_segment_report_module.c:848 #3 0x7f98f20f4ffd in _new.dwfl_core_file_report /home/vagrant/elfutils/libdwfl/core-file.c:563 #4 0x403b34 in parse_opt /home/vagrant/elfutils/src/stack.c:595 #5 0x7f98f1199471 in argp_parse (/lib64/libc.so.6+0x11e471) #6 0x402a7d in main /home/vagrant/elfutils/src/stack.c:695 #7 0x7f98f10a855f in __libc_start_call_main (/lib64/libc.so.6+0x2d55f) #8 0x7f98f10a860b in __libc_start_main_impl (/lib64/libc.so.6+0x2d60b) #9 0x402f44 in _start (/home/vagrant/elfutils/src/stack+0x402f44) ``` -- You received this message because: 1. You were specifically CC'd on the issue You may adjust your notification preferences at: https://bugs.chromium.org/hosting/settings Reply to this email to add a comment.
