Re: [PATCH 5.10] bpf: Fix overrunning reservations in ringbuf

[Dominique Martinet <dominique.martinet@atmark-techno.com>]

Dominique Martinet wrote on Wed, Jul 17, 2024 at 03:59:46PM +0900:
> The only conflict with the patch was in the comment at top of the patch
> (the commit that had changed this comment, 583c1f420173 ("bpf: Define
> new BPF_MAP_TYPE_USER_RINGBUF map type"), has nothing to do with this
> fix), so I went ahead with it.
> 
> I'm not familiar with the ringbuf code but it doesn't look too wrong to
> me at first glance; and with this all stable branches are covered.

I need a bit more sleep; that obviously missed 5.15 which didn't get
the fix backported either due to the same conflict; this commit applies
to both branches.

I've also checked something like bpftrace which uses the ring buffer for
message passing doesn't blow up when spamming a bit on 5.10, just in
case.
-- 
Dominique