Conversation
kees@fosstodon.org

Kees Cook tux

Is anyone running Clang-built or kernels in production? If so, please let me know.

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conor

Conor Dooley

Reply to @kees@fosstodon.org
@kees I know that customers of mine are using clang-built kernels, but I have no idea who, as I was not told that who, just of the inerest/intent.
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kees@fosstodon.org

Kees Cook tux

Reply to @conor

@conor I'd love to find a group that cared and had time/expertise to actually implement full stack protector in Clang on those architectures. There's been no movement since I started tracking it as missing in 2020... See slide 6: https://outflux.net/slides/2023/lpc/features.pdf

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conor

Conor Dooley

Reply to @kees@fosstodon.org
@kees I see. I will at least ask around. Would certainly seem like something that @palmer 's lot would be more likely to be able to directly contribute to.
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palmer

Palmer Dabbelt

Reply to @conor
@conor @kees sounds like you guys are trying to trick me into doing work...
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conor

Conor Dooley

Reply to @palmer
@palmer @kees No, I am trying to trick you into getting your coworkers to do work ;)
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kees@fosstodon.org

Kees Cook tux

Reply to @conor

@conor @palmer Heh, exactly! I'm trying to find who is in the best position to work on it. :)

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sdbbp@mastodon.social

sdbbp

Reply to @kees@fosstodon.org

@kees @conor I'll ask internally.

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palmer

Palmer Dabbelt

Reply to @sdbbp@mastodon.social
@sdbbp @kees @conor we've already got a Jira ;)
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palmer

Palmer Dabbelt

Reply to @palmer
@sdbbp @conor @kees though if you want to do it go for it, it's not like it's all that exciting...
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mpe@fosstodon.org

mpe

Reply to @kees@fosstodon.org

@kees Not that I've heard lately. There is https://chimera-linux.org but I don't think they have a large user base (yet 😃). IBM XL does use clang these days, but I suspect they won't be very motivated to implement those kernel-specific stack protector flags.

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q66@blahaj.social

nina

Reply to @mpe@fosstodon.org

@mpe @kees we run the build infrastructure on our own kernel builds for ppc64le, and there are people using it on both ppc64le and riscv

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kees@fosstodon.org

Kees Cook tux

Reply to @q66@blahaj.social

@q66 @mpe Is there anyone that you know that might be able to tackle powerpc per-thread stack protector canaries with Clang? See https://github.com/KSPP/linux/issues/29

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