[PATCH v4 0/2] riscv: kprobes: reject probes inside LR/SC sequences

[Nam Cao]

Xiaofeng Yuan <yuanxiaofeng at eswincomputing.com> writes:
> A breakpoint trap taken in the middle of an LR/SC sequence clears the
> load reservation, so an SC following the probed instruction always fails
> and the enclosing retry loop re-enters the breakpoint, livelocking the
> CPU.
>
> This series makes the RISC-V kprobes implementation reject probes placed
> inside an LR/SC sequence:

CC: kprobes maintainers, I would appreciate your opinion on this. Should
kprobes reject it, or leave it to users to take care not to do that?

Nam