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Comment by thefreeman | Hacker News Reader

Did you update the addresses of the kernel functions?

    #define COMMIT_CREDS_ADDR (0xffffffff81094250)
    #define PREPARE_KERNEL_CREDS_ADDR (0xffffffff81094550)

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even if you don't update the addresses you would at least get an oops if the exploit is working. I've explained the problem with rcu calls in my post https://cyseclabs.com/page?n=02012016 reply but did not describe the technique for ordering these calls. The way they do things in the poc, you'd be lucky if it succeeds once out of 100.

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