133 lines
5.2 KiB
Plaintext
133 lines
5.2 KiB
Plaintext
# Tests the data flow tracer.
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REQUIRES: linux, x86_64
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# Disable, like other dataflow tests.
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RUN: false
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XFAIL: *
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# Build the tracer and the test.
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RUN: %no_fuzzer_cpp_compiler -c -fno-sanitize=all -fsanitize=dataflow %S/../../lib/fuzzer/dataflow/DataFlow.cpp -o %t-DataFlow.o
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RUN: %no_fuzzer_cpp_compiler -c -fno-sanitize=all -fPIC %S/../../lib/fuzzer/dataflow/DataFlowCallbacks.cpp -o %t-DataFlowCallbacks.o
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RUN: %no_fuzzer_cpp_compiler -fno-sanitize=all -fsanitize=dataflow -fsanitize-coverage=trace-pc-guard,pc-table,bb,trace-cmp %S/ThreeFunctionsTest.cpp %t-DataFlow*.o -o %t-ThreeFunctionsTestDF
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RUN: %no_fuzzer_cpp_compiler -fno-sanitize=all -fsanitize=dataflow -fsanitize-coverage=trace-pc-guard,pc-table,bb,trace-cmp %S/Labels20Test.cpp %t-DataFlow*.o -o %t-Labels20TestDF
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RUN: %cpp_compiler %S/ThreeFunctionsTest.cpp -o %t-ThreeFunctionsTest
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# Dump the function list.
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RUN: %t-ThreeFunctionsTestDF 2>&1 | FileCheck %s --check-prefix=FUNC_LIST
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FUNC_LIST-DAG: LLVMFuzzerTestOneInput
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FUNC_LIST-DAG: Func1
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FUNC_LIST-DAG: Func2
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# Prepare the inputs.
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RUN: rm -rf %t/IN %t/IN20
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RUN: mkdir -p %t/IN %t/IN20
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RUN: echo -n ABC > %t/IN/ABC
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RUN: echo -n FUABC > %t/IN/FUABC
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RUN: echo -n FUZZR > %t/IN/FUZZR
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RUN: echo -n FUZZM > %t/IN/FUZZM
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RUN: echo -n FUZZMU > %t/IN/FUZZMU
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RUN: echo -n 1234567890123456 > %t/IN/1234567890123456
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RUN: echo -n FUZZxxxxxxxxxxxxxxxx > %t/IN20/FUZZxxxxxxxxxxxxxxxx
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RUN: echo -n FUZZxxxxxxxxxxxxMxxx > %t/IN20/FUZZxxxxxxxxxxxxMxxx
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RUN: echo -n FUZxxxxxxxxxxxxxxxxx > %t/IN20/FUZxxxxxxxxxxxxxxxxx
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RUN: echo -n FUxxxxxxxxxxxxxxxxxx > %t/IN20/FUxxxxxxxxxxxxxxxxxx
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RUN: export DFSAN_OPTIONS=warn_unimplemented=0
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# This test assumes that the functions in ThreeFunctionsTestDF are instrumented
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# in a specific order:
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# LLVMFuzzerTestOneInput: F0
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# Func1: F1
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# Func2: F2
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# ABC: No data is used
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RUN:%t-ThreeFunctionsTestDF %t/IN/ABC | FileCheck %s --check-prefix=IN_ABC
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IN_ABC-NOT: F0
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IN_ABC: C0
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IN_ABC-NOT: C
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# FUABC: First 3 bytes are checked, Func1/Func2 are not called.
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RUN:%t-ThreeFunctionsTestDF %t/IN/FUABC | FileCheck %s --check-prefix=IN_FUABC
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IN_FUABC: F0 11100{{$}}
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IN_FUABC-NOT: F
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IN_FUABC-NEXT: C0
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IN_FUABC-NOT: C
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# FUZZR: 5 bytes are used (4 in one function, 5-th in the other), Func2 is not called.
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RUN:%t-ThreeFunctionsTestDF %t/IN/FUZZR | FileCheck %s --check-prefix=IN_FUZZR
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IN_FUZZR: F0 11110
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IN_FUZZR: F1 00001
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IN_FUZZR-NOT: F
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IN_FUZZR: C0
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IN_FUZZR: C1
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IN_FUZZR-NOT: C
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# FUZZM: 5 bytes are used, both Func1 and Func2 are called, Func2 depends only on size.
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RUN:%t-ThreeFunctionsTestDF %t/IN/FUZZM | FileCheck %s --check-prefix=IN_FUZZM
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IN_FUZZM: F0 11110
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IN_FUZZM: F1 00001
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IN_FUZZM-NOT: F2
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IN_FUZZM: C0
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IN_FUZZM: C1
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IN_FUZZM: C2
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# FUZZMU: 6 bytes are used, both Func1 and Func2 are called, Func2 depends on byte 6 and size.
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RUN:%t-ThreeFunctionsTestDF %t/IN/FUZZMU | FileCheck %s --check-prefix=IN_FUZZMU
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# Test Labels20TestDF
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RUN:%t-Labels20TestDF %t/IN20/FUxxxxxxxxxxxxxxxxxx | FileCheck %s --check-prefix=L20_FU
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L20_FU: F0 11100000000000000000{{$}}
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L20_FU-NOT: F
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RUN:%t-Labels20TestDF %t/IN20/FUZxxxxxxxxxxxxxxxxx | FileCheck %s --check-prefix=L20_FUZ
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L20_FUZ: F0 11110000000000000000{{$}}
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L20_FUZ-NOT: F
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RUN:%t-Labels20TestDF %t/IN20/FUZZxxxxxxxxxxxxxxxx | FileCheck %s --check-prefix=L20_FUZZ
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L20_FUZZ: F0 11110000000000000000{{$}}
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L20_FUZZ-NEXT: F1 00000000000000001000{{$}}
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L20_FUZZ-NOT: F
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RUN:%t-Labels20TestDF %t/IN20/FUZZxxxxxxxxxxxxMxxx | FileCheck %s --check-prefix=L20_FUZZM
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L20_FUZZM: F0 11110000000000000000{{$}}
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L20_FUZZM-NEXT: F1 00000000000000001000{{$}}
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L20_FUZZM-NEXT: F2 00000000000000000001{{$}}
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L20_FUZZM-NOT: F
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# Test libFuzzer's built in DFT collection.
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RUN: rm -rf %t-DFT
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RUN: %t-ThreeFunctionsTest -collect_data_flow=%t-ThreeFunctionsTestDF -data_flow_trace=%t-DFT %t/IN/FUZZMU
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RUN: cat %t-DFT/* | sort | FileCheck %s --check-prefix=IN_FUZZMU
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IN_FUZZMU: F0 111100
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IN_FUZZMU: F1 000010
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IN_FUZZMU: F2 000001
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# Test that we can run collect_data_flow on the entire corpus dir
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RUN: rm -rf %t/OUT
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RUN: %t-ThreeFunctionsTest -collect_data_flow=%t-ThreeFunctionsTestDF -data_flow_trace=%t/OUT %t/IN
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RUN: %t-ThreeFunctionsTest -data_flow_trace=%t/OUT -runs=0 -focus_function=Func2 %t/IN 2>&1 | FileCheck %s --check-prefix=USE_DATA_FLOW_TRACE
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USE_DATA_FLOW_TRACE: INFO: DataFlowTrace: reading from {{.*}}/OUT
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USE_DATA_FLOW_TRACE: d28cb407e8e1a702c72d25473f0553d3ec172262 => |000001|
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USE_DATA_FLOW_TRACE: INFO: DataFlowTrace: 6 trace files, 3 functions, 1 traces with focus function
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USE_DATA_FLOW_TRACE: INFO: Focus function is set to 'Func2'
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USE_DATA_FLOW_TRACE: INITED
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USE_DATA_FLOW_TRACE: INFO: 2/6 inputs touch the focus function
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USE_DATA_FLOW_TRACE: INFO: 1/2 inputs have the Data Flow Trace
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# Test that we can run collect_data_flow on a long input (>2**16 bytes)
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RUN: printf "%0.sA" {1..150001} > %t/IN/very_long_input
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RUN: rm -rf %t/OUT
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RUN: %t-ThreeFunctionsTest -collect_data_flow=%t-ThreeFunctionsTestDF -data_flow_trace=%t/OUT %t/IN/very_long_input
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RUN: rm %t/IN/very_long_input
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# Test that it fails explicitly when an empty corpus is provided.
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RUN: rm -rf %t/IN && mkdir %t/IN
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RUN: not %t-ThreeFunctionsTest -collect_data_flow=%t-ThreeFunctionsTestDF -data_flow_trace=%t/OUT %t/IN 2>&1 | FileCheck %s --check-prefix=EMPTY_CORPUS
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EMPTY_CORPUS: ERROR: can't collect data flow without corpus provided
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