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xoreaxeaxeax / sandsifter

The x86 processor fuzzer
BSD 3-Clause "New" or "Revised" License
4.89k stars 350 forks source link

Crash near 660fa4c40d #54

Open Ranyaws opened 6 years ago

Ranyaws commented 6 years ago

sudo ./sifter.py --unk --dis --len --sync --tick --save -- -P1 -t -i 660fa4c40d0000000000000000000000

image

If I unpause the program will crash to commandline faster than I can can see. In my first run which took almost 4 hours it ended up probably at this exact moment too, maybe already before that though, since there was some weird stuff going on in the few seconds before the crash.

I since I didn't use the --save command I tried botching a resume file and I got some overflow error that looked funny so I renamed the data-folder to give the program a fresh start.

Core i5 3450. I guess there is some instruction here that ends up crashing it.

rigred commented 6 years ago

You can try blacklisting this instruction or skip the range by using the command line parameters.