From: Jarkko Sakkinen <jarkko@kernel.org>
To: keyrings@vger.kernel.org
Cc: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com>,
stable@vger.kernel.org, David Howells <dhowells@redhat.com>,
Lukas Wunner <lukas@wunner.de>,
Ignat Korchagin <ignat@cloudflare.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Peter Huewe <peterhuewe@gmx.de>, Jason Gunthorpe <jgg@ziepe.ca>,
Paul Moore <paul@paul-moore.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
Mimi Zohar <zohar@linux.ibm.com>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH v8] KEYS: Add a list for unreferenced keys
Date: Tue, 8 Apr 2025 19:01:47 +0300 [thread overview]
Message-ID: <Z_VIaxyGoRlg3vyo@kernel.org> (raw)
In-Reply-To: <20250407125801.40194-1-jarkko@kernel.org>
On Mon, Apr 07, 2025 at 03:58:01PM +0300, Jarkko Sakkinen wrote:
> From: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com>
>
> Add an isolated list of unreferenced keys to be queued for deletion, and
> try to pin the keys in the garbage collector before processing anything.
> Skip unpinnable keys.
>
> Use this list for blocking the reaping process during the teardown:
>
> 1. First off, the keys added to `keys_graveyard` are snapshotted, and the
> list is flushed. This the very last step in `key_put()`.
> 2. `key_put()` reaches zero. This will mark key as busy for the garbage
> collector.
> 3. `key_garbage_collector()` will try to increase refcount, which won't go
> above zero. Whenever this happens, the key will be skipped.
>
> Cc: stable@vger.kernel.org # v6.1+
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com>
This version is my master branch now:
https://web.git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git/log/
For the time being not in next.
BR, Jarkko
next prev parent reply other threads:[~2025-04-08 16:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-07 12:58 [PATCH v8] KEYS: Add a list for unreferenced keys Jarkko Sakkinen
2025-04-08 16:01 ` Jarkko Sakkinen [this message]
2025-04-10 12:43 ` Jarkko Sakkinen
2025-04-11 15:59 ` David Howells
2025-04-11 20:37 ` Jarkko Sakkinen
2025-04-11 20:41 ` Jarkko Sakkinen
2025-04-12 1:30 ` Jarkko Sakkinen
2025-04-12 12:37 ` Jarkko Sakkinen
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