Re: [PATCH v2 1/2] uprobes: Remove redundant spinlock in uprobe_deny_signal()

[Andrii Nakryiko]

On Tue, Aug 13, 2024 at 5:47 AM Oleg Nesterov <oleg@xxxxxxxxxx> wrote:
>
> On 08/13, Liao, Chang wrote:
> >
> >
> > Oleg, your explaination is more accurate. So I will reword the commit log and
> > quote some of your note like this:
>
> Oh, please don't. I just tried to explain the history of this spin_lock(siglock).
>
> >   Since we already have the lockless user of clear_thread_flag(TIF_SIGPENDING).
> >   And for uprobe singlestep case, it doesn't break the rule of "the state of
> >   TIF_SIGPENDING of every thread is stable with sighand->siglock held".
>
> It obviously does break the rule above. Please keep your changelog as is.
>
> Oleg.
>

Liao,

Can you please rebase and resend your patches now that the first part
of my uprobe patches landed in perf/core? Seems like there is some
tiny merge conflict or something.

Thanks!