Christian Schoenebeck wrote on Sat, Mar 26, 2022 at 12:48:26PM +0100:

[...]

quoted

Signed-off-by: David Kahurani <redacted>
Reported-by: syzbot+5e28cdb7ebd0f2389ca4@syzkaller.appspotmail.com

Looks good to me - it's pretty much what I'd have done if I hadn't
forgotten!
It doesn't strike me as anything critical and I don't have anything else
for this cycle so I'll just queue it in -next for now, and submit it
at the start of the 5.19 cycle in ~2months.

I'm not absolutely sure that this will really fix this issue, but it seems to 
be a good idea to add a rcu_barrier() call here nevertheless.

Yeah, I'm not really sure either but this is the only idea I have given
the debug code doesn't list anything left in the cache, and David came
to the same conclusion :/

Can't hurt though, so let's try and see if syzbot complains
again. Thanks for the review!

-- 
Dominique