Re: extended bpf_send_signal_thread with argument
From: Peter Zijlstra
Date: Mon Feb 01 2021 - 04:23:40 EST
On Sun, Jan 31, 2021 at 12:14:02PM +0100, Dmitry Vyukov wrote:
> Hi,
>
> I would like to send a signal from a bpf program invoked from a
> perf_event. There is:
You can't. Sending signals requires sighand lock, and you're not allowed
to take locks from perf_event context.