./detect-mc-mapping-pagemap.sh fails with invalid option -- 'b'

[travisdowns]

Because detect-mc-mapping.sh doesn't work for me as described in #15, I tried ./detect-mc-mapping-pagemap.sh which I understand is the new "safe" method of detecting the bank bits.

However, this script fails since the mc-mapping-pagemap binary doesn't support the -b option that the script uses:

$ ./detect-mc-mapping-pagemap.sh 
mc-mapping-pagemap: no process found
Run a background task on core1-3
Now run the test
Bit12: ./mc-mapping-pagemap: invalid option -- 'b'
Bit13: ./mc-mapping-pagemap: invalid option -- 'b'
Bit14: ./mc-mapping-pagemap: invalid option -- 'b'
Bit15: ./mc-mapping-pagemap: invalid option -- 'b'
Bit16: ./mc-mapping-pagemap: invalid option -- 'b'
Bit17: ./mc-mapping-pagemap: invalid option -- 'b'

[heechul]

Thanks for the report. I removed the script. As mc-mapping-pagemap is now multithreaded, you can instead directly run the program as follow without needing a script.

$ sudo chrt -f 1 ./mc-mapping-pagemap -p 0.7 -n 3

Note, however, that the detector may not be able to handle newer Intel architectures such as Skylake as their dram controllers use more complex XOR schemes.

For the new architectures, you may want to checkout the following paper and the authors' code repository.

DRAMA: Exploiting DRAM Addressing for Cross-CPU Attacks, Usenix Security Symposium, 2016
https://github.com/IAIK/drama

[travisdowns]

Thanks @heechul - I had indeed run across that one, although I haven't tried out the code yet. Thanks for the note!