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.

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