Re: [PATCH v3] tracing: precise log info for kretprobe addr err

From: Oleg Nesterov
Date: Wed Jan 27 2021 - 00:51:45 EST


On 01/26, Masami Hiramatsu wrote:
>
> > >
> > > IOW, the "offset != 0" check removed by this patch is obviously wrong, right?
> > >
>
> No, not wrong. Even offset != 0, if the symbol exists in the kernel,
> kprobe_on_func_entry() will check it.

Yes, but unless I am totally confused... if kprobe_on_func_entry() returns false,
then trace_kprobe_create() should fail with BAD_RETPROBE even if offset == 0 ?

Oleg.