Re: [PATCH 0/2] tracing/wprobe: Fix to avoid inifinite watchpoint exception on arm64

[Will Deacon]

On Tue, Nov 04, 2025 at 10:37:35PM +0900, Masami Hiramatsu wrote:
> Gently ping.
> 
> There is a bugfix (or strange behavior) on arm64 hw breakpoint but
> to fix it cleanly, it should change the perf itself (but I'm not
> sure why arm64 changes the behavior only for the default overflow
> handlers.) Anyone knows it?

It's because GDB expects to handle the stepping itself when using the
ptrace interface (with a custom overflow handler to deliver SIGTRAP).

Will