Re: [PATCH v2] keys: Avoid the owner account dereference in named keyring lookup

[Jarkko Sakkinen <jarkko@kernel.org>]

On Sat, Oct 17, 2026 at 07:28:31PM +0300, Jarkko Sakkinen wrote:
> On Sat, Oct 17, 2026 at 03:47:32PM +0800, Cen Zhang wrote:
> > Hi Eric,
> > 
> > Eric Biggers <ebiggers@kernel.org> 于2026年10月17日周六 11:51写道：
> > >
> > > Don't key_serial_next() and find_ge_key() (used when reading from
> > > /proc/keys) have the same bug?
> > >
> > > - Eric
> > 
> > Thansk a lot for the reivew. You're right — key_serial_next() and
> > find_ge_key() have
> > the same issue.
> > 
> > I'll send a follow-up patch to fix those as well.
> > 
> > Thanks for the catch again.
> > 
> > Best regards,
> > Cen Zhang
> 
> Yeah, please do.
> 
> You put so much effort to scenario and you are nailing the bug
> that way, and I do appreciate that, so here's what you should do
> with the commit messages:
> 
> 1. Do the first half like you always do. That's great. And I've
>    also said that.
> 2. Think just a moment. If you get anxiety from that something
>    that should be mentioned e.g., something that you did not get
>    immediately yourself at first, write remarks those down. I'm
>    100% sure you know when it might be good tip on something
>    non-obvious.
> 3. Send that. If we feel it is lacking some info needed, let's
>    iterate that. It's not a big deal.
> 
> I'm just underlining this because so little would have to be
> improved to make this right :-)

And also: I would not complain about anything if I did not want
you to send patches because it does not make sense to waste time
like that. So take it this from that angle. And they bring value
thanks to well described scenarios.

Br, Jarkko