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SubjectRe: 9f4835fb96 ("x86/fpu: Tighten validation of user-supplied .."): Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

* kernel test robot <fengguang.wu@intel.com> wrote:

> Greetings,
>
> 0day kernel testing robot got the below dmesg and the first bad commit is
>
> https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/fpu
>
> commit 9f4835fb965d8eea7e608d0cb62c246c804dec90
> Author: Eric Biggers <ebiggers@google.com>
> AuthorDate: Fri Sep 22 10:41:55 2017 -0700
> Commit: Ingo Molnar <mingo@kernel.org>
> CommitDate: Sat Sep 23 11:02:00 2017 +0200
>
> x86/fpu: Tighten validation of user-supplied xstate_header

Would it be possible to re-start this bisection, now that I've split up the commit
into 10 more obvious patches?

My guess is that it's one of these two that is the bad commit:

3deb4cca945b: x86/fpu: Copy the full header in copy_user_to_xstate()
cfbd048cce44: x86/fpu: Copy the full state_header in copy_kernel_to_xstate()

... but it could be some of the others as well.

Thanks,

Ingo

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