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SubjectRe: [git pull] coredump infoleak fix
On Thu, May 28, 2020 at 12:19:32PM -0700, Linus Torvalds wrote:
> On Thu, May 28, 2020 at 12:17 PM Al Viro <viro@zeniv.linux.org.uk> wrote:
> >
> > Might make sense to change the summary of that pull request to something
> > like
> > make sure we don't forget to report the xstate components that happen
> > to be in init state - both for coredump and for PTRACE_GETREGSET
>
> Note that this has nothing to do with x86 per se.
>
> It's more about ->getregs() being a horrid interface, and being easy
> to get wrong in general. The fact that xstate is complex is just one
> such trigger.

The only one I've ran into so far, fortunately... Almost all instances
write sequentially; the only exceptions are this one (buggy) and ia64
horrors with unwind.

I certainly agree that ->get() is an atrocity...

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