On Tue, Oct 26, 2021 at 1:43 PM Alexei Starovoitov
[off-list ref] wrote:

On Tue, Oct 26, 2021 at 1:38 PM Eric Dumazet [off-list ref] wrote:

quoted

From: Eric Dumazet <edumazet@google.com>

__bpf_prog_run() can run from non IRQ contexts, meaning
it could be re entered if interrupted.

This calls for the irq safe variant of u64_stats_update_{begin|end},
or risk a deadlock.

This patch is a nop on 64bit arches, fortunately.

u64_stats_update_begin_irqsave is a nop. Good!
We just sent the last bpf tree PR for this cycle.
We'll probably take it into bpf-next after CI has a chance to run it.

Great, this means I can add the followup patch to the series.