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 v5] KEYS: Add a list for unreferenced keys
Date: Mon, 7 Apr 2025 03:37:59 +0300 [thread overview]
Message-ID: <Z_MeZ-dC7ugzdkkn@kernel.org> (raw)
In-Reply-To: <20250407001046.19189-1-jarkko@kernel.org>
On Mon, Apr 07, 2025 at 03:10:45AM +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>
Rebase went wrong:
https://lore.kernel.org/keyrings/20250407003622.22139-1-jarkko@kernel.org/T/#u
BR, Jarkko
prev parent reply other threads:[~2025-04-07 0:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-07 0:10 [PATCH v5] KEYS: Add a list for unreferenced keys Jarkko Sakkinen
2025-04-07 0:37 ` Jarkko Sakkinen [this message]
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