1# Tests the data flow tracer. 2REQUIRES: linux, x86_64 3 4# Disabling due to dfs$ prefix to .dfsan suffix change in DFSan. 5# TODO(kcc): re-enable. 6RUN: false 7XFAIL: * 8 9# Build the tracer and the test. 10DISABLED: %no_fuzzer_cpp_compiler -c -fno-sanitize=all -fsanitize=dataflow %S/../../lib/fuzzer/dataflow/DataFlow.cpp -o %t-DataFlow.o 11DISABLED: %no_fuzzer_cpp_compiler -c -fno-sanitize=all -fPIC %S/../../lib/fuzzer/dataflow/DataFlowCallbacks.cpp -o %t-DataFlowCallbacks.o 12DISABLED: %no_fuzzer_cpp_compiler -fno-sanitize=all -fsanitize=dataflow -fsanitize-coverage=trace-pc-guard,pc-table,bb,trace-cmp %S/OnlySomeBytesTest.cpp %t-DataFlow*.o -o %t-DFT 13DISABLED: %cpp_compiler %S/OnlySomeBytesTest.cpp -o %t-Fuzz 14 15# Prepare the inputs. 16DISABLED: rm -rf %t/* 17DISABLED: mkdir -p %t/IN 18DISABLED: echo -n 0123456789012345678901234567890123456789012345678901234567891234 > %t/IN/6 19DISABLED: cat %t/IN/6 %t/IN/6 %t/IN/6 %t/IN/6 > %t/IN/8 20DISABLED: cat %t/IN/8 %t/IN/8 %t/IN/8 %t/IN/8 > %t/IN/10 21DISABLED: cat %t/IN/10 %t/IN/10 %t/IN/10 %t/IN/10 > %t/IN/12 22# %t/IN/12 is 4096 bytes-long. 23 24DISABLED: %t-Fuzz -focus_function='fB(unsigned char const*)' -runs=0 %t/IN 2>&1 | FileCheck %s --check-prefix=FOCUS_fB 25FOCUS_fB: Focus function is set to 'fB(unsigned char const*)' 26 27DISABLED: %t-Fuzz -focus_function=f0 -runs=0 %t/IN 2>&1 | FileCheck %s --check-prefix=NO_FOCUSED_INPUT 28NO_FOCUSED_INPUT: Focus function is set to 'f0' 29NO_FOCUSED_INPUT: INFO: 0/2 inputs touch the focus function 30 31DISABLED: (echo -n ABC; cat %t/IN/12) > %t/IN/ABC 32DISABLED: %t-Fuzz -focus_function=f0 -runs=0 %t/IN 2>&1 | FileCheck %s --check-prefix=ONE_FOCUSED_INPUT 33ONE_FOCUSED_INPUT: INFO: 1/3 inputs touch the focus function 34 35DISABLED: rm -rf %t/IN_DFT 36DISABLED: %t-Fuzz -collect_data_flow=%t-DFT %t/IN -data_flow_trace=%t/IN_DFT > /dev/null 2>&1 37 38# Repeat twice to make sure that the inputs with DFT are not removed from the corpus. 39DISABLED: %t-Fuzz -focus_function=f0 -data_flow_trace=%t/IN_DFT -runs=100 %t/IN 2>&1 | FileCheck %s --check-prefix=HAVE_DFT 40DISABLED: %t-Fuzz -focus_function=f0 -data_flow_trace=%t/IN_DFT -runs=100 %t/IN 2>&1 | FileCheck %s --check-prefix=HAVE_DFT 41HAVE_DFT: INFO: 1/{{.*}} inputs have the Data Flow Trace 42 43# Collect DFT, then use it. 44DISABLED: rm -rf %t/C %t/C1 && mkdir %t/C %t/C1 && cp %t/IN/* %t/C 45DISABLED: rm -rf %t/C_DFT && %t-Fuzz -collect_data_flow=%t-DFT %t/C -data_flow_trace=%t/C_DFT > /dev/null 2>&1 46DISABLED: not %t-Fuzz -focus_function=f0 -data_flow_trace=%t/C_DFT -seed=1 -runs=1000000 -use_value_profile=1 %t/C1 %t/C 2> %t/log 47DISABLED: grep BINGO %t/log 48 49# Test -focus_function=auto: run 100 times and verify that 50# * 'f0' is the most frequent focus function. 51# * the second most frequent is one of fA/fB/fC in a de-mangled form. 52DISABLED: %t-Fuzz -focus_function=auto -data_flow_trace=%t/C_DFT -runs=0 %t/C -jobs=100 2>&1 | grep AUTOFOCUS | sort | uniq -c | sort -g -r | head -n 2 | FileCheck %s --check-prefix=AUTOFOCUS 53AUTOFOCUS: INFO: AUTOFOCUS: {{.*}} f0 54AUTOFOCUS: INFO: AUTOFOCUS: {{.*f[ABC]}}(unsigned char const*) 55 56# Actually execute 50 fuzzing processes with a small number of runs, to test -focus_function=auto for real. 57# We can not test data_flow_trace=auto in just a single run, because it may choose to focus on a wrong function. 58DISABLED: not %t-Fuzz -focus_function=auto -data_flow_trace=%t/C_DFT %t/C -jobs=50 -runs=200000 -use_value_profile=1 2> %t/log 59DISABLED: grep BINGO %t/log 60