Comment #1 on issue 45646 by da...@adalogics.com: elfutils:fuzz-libdwfl:
Misaligned-address in __libdw_image_header
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=45646#c1
UBSAN report
Running:
/mnt/scratch0/clusterfuzz/bot/inputs/fuzzer-testcases/crash-137c106fe516c3a5c4d5fb8deeb45c4e982d59a5
image-header.c:84:7: runtime error: load of misaligned address 0x7f2499144202
for type 'uint32_t' (aka 'unsigned int'), which requires 4 byte alignment
0x7f2499144202: note: pointer points here
55 aa 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
20 20 20 20 20 20 20
^
#0 0x4c04de in __libdw_image_header
/src/elfutils/libdwfl/image-header.c:84:7
#1 0x4bf336 in libdw_open_elf /src/elfutils/libdwfl/open.c:141:15
#2 0x4bf1dc in __libdw_open_file /src/elfutils/libdwfl/open.c:197:10
#3 0x4b5e6d in __libdwfl_report_offline
/src/elfutils/libdwfl/offline.c:281:22
#4 0x4b5e6d in dwfl_report_offline /src/elfutils/libdwfl/offline.c:316:10
#5 0x4b2f88 in LLVMFuzzerTestOneInput /src/fuzz-libdwfl.c:47:22
#6 0x43da32 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*,
unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
#7 0x4295e2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned
long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:324:6
#8 0x42ee4c in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char
const*, unsigned long))
/src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:860:9
#9 0x4577e2 in main
/src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
#10 0x7f2498dd90b2 in __libc_start_main
/build/glibc-eX1tMB/glibc-2.31/csu/libc-start.c:308:16
#11 0x407d2d in _start
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior image-header.c:84:7 in
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