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

Xiaofeng Yuan [off-list ref] 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