Re: [PATCH v1 0/4] Fix ftrace and kprobes issues for LoongArch

[Tiezhu Yang]

On 2026/5/12 下午4:20, Tiezhu Yang wrote:
> This series addresses ftrace and kprobes issues observed under heavy
> tracing loads.
>
> Tiezhu Yang (4):
>    LoongArch: ftrace: Fix stale per-CPU kprobe state after task migration
>    LoongArch: kprobes: Use larch_insn_text_copy() to patch instructions
>    LoongArch: kprobes: Fix single-stepping instruction slot preparation
>    LoongArch: kprobes: Fix handling of fatal unrecoverable recursions

Hi Lisa and Rui,

You are right, please ignore the patch #3.

Hi Huacai,

Please disregard the patch #1 and focus on the patch #2 and #4.

After thinking it through, it is better to avoid calling functions that
might sleep in the probe handler. We have modified the test module with
a proper way, there is no problem thereafter.

The right way is to prevent the problem at the root instead of trying to
fix it after the fact.

Thanks,
Tiezhu