Re: [PATCH v15 00/10] arm64: Add kernel probes (kprobes) support

[David Long]

On 07/14/2016 12:22 PM, Catalin Marinas wrote:
> On Fri, Jul 08, 2016 at 12:35:44PM -0400, David Long wrote:
> > David A. Long (3):
> >    arm64: Add HAVE_REGS_AND_STACK_ACCESS_API feature
> >    arm64: Add more test functions to insn.c
> >    arm64: add conditional instruction simulation support
> >
> > Pratyush Anand (2):
> >    arm64: Blacklist non-kprobe-able symbol
> >    arm64: Treat all entry code as non-kprobe-able
> >
> > Sandeepa Prabhu (4):
> >    arm64: Kprobes with single stepping support
> >    arm64: kprobes instruction simulation support
> >    arm64: Add kernel return probes support (kretprobes)
> >    kprobes: Add arm64 case in kprobe example module
> >
> > William Cohen (1):
> >    arm64: Add trampoline code for kretprobes
>
> I applied these patches on top of the arm64 for-next/core branch an
> tried to run the resulting kernel in a guest (on a Juno platform using
> both kvmtool and qemu) with KPROBES_SANITY_TEST enabled. Unfortunately,
> the kernel fails to boot with lots of "Unexpected kernel single-step
> exception at EL1".
>
> Did you manage to run Kprobes in a guest before?

I have not run this code as a guest, I have only tested it natively.

-dl