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

[Huacai Chen]

On Fri, May 15, 2026 at 10:52 AM Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote:
>
> 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.
I think Patch#3 is OK, but you need to remove the introduction about atomicity.

Huacai

>
> 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
>
>