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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Pablo Sole‏ @_pablosole_ 26 Apr 2017
      • Report Tweet
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      Replying to @lazytyped @comex @marcan42

      None. It is a feature by feature (partially implemented) rip off, even acknowledged.

      2 replies 0 retweets 1 like
    2. comex‏ @comex 27 Apr 2017
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      Replying to @_pablosole_ @lazytyped @marcan42

      The "innovation" is being upstream, thus protecting everyone rather than, in the past, people who went out of their way to get grsec...

      2 replies 0 retweets 1 like
    3. comex‏ @comex 27 Apr 2017
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      Replying to @comex @_pablosole_ and

      ...moving forward, only big companies who go out of their way AND pay $$$ to get grsec.

      1 reply 0 retweets 0 likes
    4. comex‏ @comex 27 Apr 2017
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      Replying to @comex @_pablosole_ and

      If you blame Linus for grsec not working with upstream in the past, that's fine by me; I don't know and don't care about the history.

      1 reply 0 retweets 0 likes
    5. comex‏ @comex 27 Apr 2017
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      Replying to @comex @_pablosole_ and

      But evidently it *is* possible to get stuff upstream now, albeit slower (but also less hackily), slowly decreasing the value add of grsec.

      2 replies 0 retweets 0 likes
    6. comex‏ @comex 27 Apr 2017
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      Replying to @comex @_pablosole_ and

      Mind you, if RAP were open, I don't think it'd have a hard time being upstreamed as an optional feature - not disruptive like other stuff.

      2 replies 0 retweets 0 likes
    7. PaX Team‏ @paxteam 28 Apr 2017
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      Replying to @comex @_pablosole_ and

      you clearly have no idea what it took to protect linux with RAP. it's the *most* complex feature of PaX by far.

      1 reply 0 retweets 2 likes
    8. comex‏ @comex 28 Apr 2017
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      Replying to @paxteam @_pablosole_ and

      I could be mistaken on that point, since of course RAP is closed and I can't inspect it. (Less certainty is why I said "I don't think".)

      2 replies 0 retweets 0 likes
    9. Pablo Sole‏ @_pablosole_ 28 Apr 2017
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      Replying to @comex @paxteam and

      scripts/gcc-plugins/rap_plugin/rap_plugin.c, What do you mean it is "closed"? you can totally inspect it and make your very own even...

      1 reply 0 retweets 1 like
    10. comex‏ @comex 28 Apr 2017
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      Replying to @_pablosole_ @paxteam and

      AFAIK the formerly-public version was not the complete RAP and missing critical parts.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 28 Apr 2017
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      Replying to @comex @_pablosole_ and

      It doesn't even protect return addresses, just indirect calls... so it does nothing to stop ROP.

      1:56 PM - 28 Apr 2017
      2 replies 0 retweets 0 likes
        1. Linux Kernel Comment‏ @lkc_ebooks 28 Apr 2017
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          Replying to @marcan42 @comex and

          The caller must supply the original mm_walk for access to the ->private or ->mm fields.

          0 replies 0 retweets 0 likes
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        1. PaX Team‏ @paxteam 28 Apr 2017
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          Replying to @marcan42 @comex and

          in your expert opinion what does scripts/gcc-plugins/rap_plugin/rap_ret_pass.c do? oopsie... you goofed up again ;)

          1 reply 0 retweets 0 likes
        2. Hector Martin‏ @marcan42 28 Apr 2017
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          Replying to @paxteam @comex and

          Oh, you decided to stop nerfing RAP in the public release? Good for you! Because that file magically appeared in 4.9 and wasn't in 4.8.

          2 replies 0 retweets 1 like
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