WARNING: Error delivering sample, retrying with a clean target

[zclrsr]

Hi everyone,

I would like to know the problem behind my output. There had already been a issue with the same title but I assure that this is different than the earlier one.

Note: I have already verified that my harness executable is closing the input file handle with ProcMon inside the target function.

Command:

fuzzer.exe -in "targets\id_dcraw_harness\input"  -out "targets\id_dcraw_harness\output" -t 1000 -delivery file -file_extension cr2 -max_sample_size 52428800  -instrument_module ID_DCRAW.dll -target_module id_dcraw_harness.exe -target_method fuzzme -nargs 1 -iterations 10000 -- "targets\id_dcraw_harness\id_dcraw_harness.exe"  @@

Output:

E:\Jackalope\build\Release>fuzzer.exe -in "targets\id_dcraw_harness\input"  -out "targets\id_dcraw_harness\output" -t 1000 -delivery file -file_extension cr2 -max_sample_size 52428800 -instrument_module ID_DCRAW.dll -target_module id_dcraw_harness.exe -target_method fuzzme -nargs 1 -iterations 10000 -- "targets\id_dcraw_harness\id_dcraw_harness.exe"  @@
Fuzzer version 1.00
1 input files read
Running input sample targets\id_dcraw_harness\input\example.cr2
Instrumented module ID_DCRAW.dll, code size: 5746688

Total execs: 1
Unique samples: 0 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 0
Execs/s: 1
[!] WARNING: Error delivering sample, retrying with a clean target
[!] WARNING: Repeatedly failed to deliver sample, retrying after delay

Total execs: 2
Unique samples: 0 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 0
Execs/s: 1
[!] WARNING: Sample delivery completed successfully after 2 retries

Instrumented module ID_DCRAW.dll, code size: 5746688

Total execs: 2
Unique samples: 0 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 0
Execs/s: 0
[!] WARNING: Error delivering sample, retrying with a clean target
[!] WARNING: Repeatedly failed to deliver sample, retrying after delay

Total execs: 3
Unique samples: 0 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 0
Execs/s: 1
[!] WARNING: Sample delivery completed successfully after 2 retries

Instrumented module ID_DCRAW.dll, code size: 5746688

Total execs: 3
Unique samples: 0 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 0
Execs/s: 0
[!] WARNING: Error delivering sample, retrying with a clean target
[!] WARNING: Repeatedly failed to deliver sample, retrying after delay

Total execs: 4
Unique samples: 0 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 0
Execs/s: 1
[!] WARNING: Sample delivery completed successfully after 2 retries

Instrumented module ID_DCRAW.dll, code size: 5746688

Total execs: 4
Unique samples: 0 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 0
Execs/s: 0

Total execs: 4
Unique samples: 1 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 4653
Execs/s: 0
Fuzzing sample 00000
[!] WARNING: Error delivering sample, retrying with a clean target
[!] WARNING: Repeatedly failed to deliver sample, retrying after delay

Total execs: 5
Unique samples: 1 (0 discarded)
Crashes: 0 (0 unique)
Hangs: 0
Offsets: 4653
Execs/s: 1
[!] WARNING: Sample delivery completed successfully after 2 retries

Instrumented module ID_DCRAW.dll, code size: 5746688
Exception at address 000000017EB0505A
Access address: 0000000000000000
Exception in instrumented module ID_DCRAW.dll 0000000180000000
Code before:
18 98 ff 01 b8 f7 ff ff ff c3
Code after:
48 8b 01 33 d2 9c 50 53 48 8b 40 10 48 89 c3 48
[!] WARNING: Error delivering sample, retrying with a clean target
[-] PROGRAM ABORT : Repeatedly failed to deliver sample         Location : Fuzzer::TryReproduceCrash(), E:\Jackalope\fuzzer.cpp:334

Let me know if you need any more information.

Thanks!