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SubjectRe: [PATCH 26/30] Lock down ftrace
Jiri Kosina <> wrote:

> > The idea is to prevent cryptographic data for filesystems and other things
> > from being read out of the kernel memory as well as to prevent unauthorised
> > modification of kernel memory.
> Then it would make sense to actually lock down dumping of registers /
> function arguments (kprobes can currently do that, ftrace eventually could
> as well I guess), but disabling the whole ftrace altogether seems like a
> totally unnecessary overkill.

That would be fine by me. I have a patch that locks down kprobes in this
series. Steven says that ftrace might acquire the ability to dump registers
in the future.


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