Unable to create profile with create_llvm_prof - Empty profile map error

Hi, I'm trying to compile clang using AutoFDO. In order, I'm running the following (adapted from the propeller script):

- Build baseline clang to generate profiles
```
COMMON_CMAKE_FLAGS=(
"-DLLVM_OPTIMIZED_TABLEGEN=On"
"-DCMAKE_BUILD_TYPE=RelWithDebInfo"
"-DLLVM_TARGETS_TO_BUILD=X86"
"-DLLVM_ENABLE_PROJECTS=clang"
"-DCMAKE_C_COMPILER=${PATH_TO_TRUNK_LLVM_BUILD}/bin/clang"
"-DCMAKE_CXX_COMPILER=${PATH_TO_TRUNK_LLVM_BUILD}/bin/clang++"
"-DLLVM_BUILD_INSTRUMENTED=ON" )

cmake -G Ninja "${COMMON_CMAKE_FLAGS[@]}"\
${PATH_TO_SOURCES}/llvm-project/llvm
ninja -j 40 clang
```

- Use perf to obtain branch data
```
ninja -t commands | head -100 >& ./perf_commands.sh
chmod +x ./perf_commands.sh
perf record -j any,u ./perf_commands.sh
```

- Use create_llvm_prof to generate the profile
`create_llvm_prof --binary $PATH_TO_BINARIES/clang.baseline --out baseline.prof`

Everything succeeds, until the very last command which gives the following output:
```
[WARNING:/home/autofdo/third_party/perf_data_converter/src/quipper/perf_reader.cc:1322] Skipping 492 bytes of metadata: HEADER_CPU_TOPOLOGY
[WARNING:autofdo/third_party/perf_data_converter/src/quipper/perf_reader.cc:1069] Skipping unsupported event PERF_RECORD_CPU_MAP
[INFO:/home/autofdo/third_party/perf_data_converter/src/quipper/perf_reader.cc:1060] Number of events stored: 8366776
[INFO:/home/autofdo/third_party/perf_data_converter/src/quipper/perf_parser.cc:272] Parser processed: 1221 MMAP/MMAP2 events, 112 COMM events, 110 FORK events, 111 EXIT events, 8336706 SAMPLE events, 8287979 of these were mapped, 0 SAMPLE events with a data address, 0 of these were mapped
WARNING: Logging before InitGoogleLogging() is written to STDERR
I20240926 10:32:30.280131 89010 sample_reader.cc:289] No buildid found in binary
I20240926 10:32:34.213464 89010 symbol_map.cc:477] Adding loadable exec segment: offset=1597000 vaddr=1597000
W20240926 10:32:42.118443 89010 llvm_profile_writer.cc:50] Got an empty profile map. The output file might still be not empty (e.g., containing symbol list in binary format) but might be not helpful as a profile
```

I have tested several configurations and also tried to use different perf option, but the outcome does not seems to change.

Thanks in advance.