From: sashiko-bot@kernel.org
Cc: "open list:SECURITY SUBSYSTEM" <linux-security-module@vger.kernel.org>
Subject: Re: [RFC PATCH v2 03/11] dns_resolver: Clear .dns_resolver cache when the last client unloads
Date: Wed, 04 Nov 2026 03:03:03 +0000 [thread overview]
Message-ID: <sashiko-outbox-196567@kernel.org> (raw)
In-Reply-To: <20261103030226.2685251-4-jarkko@kernel.org>
> dns_query() caches resolved dns_resolver keys into the module-owned
> .dns_resolver keyring until the TTL expires or module_exit() revokes the
> keyring.
>
> Once live keys pin their key type, cached entries keep dns_resolver.ko
> pinned after its client modules unload.
>
> Track active kernel client modules with dns_resolver_cache_get() and
> dns_resolver_cache_put(), and do the necessary plumbing for:
>
> 1. nfsv4
> 2. cifs
> 3. libceph
> 4. kafs
>
> When the last client unloads, clear .dns_resolver and flush key garbage
> collection so dns_resolver.ko can unload immediately.
>
> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261103030226.2685251-1-jarkko@kernel.org?part=3
next prev parent reply other threads:[~2026-11-04 3:03 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-03 3:02 [RFC PATCH v2 00/11] KEYS: Sanitize the garbage collector Jarkko Sakkinen
2026-11-03 3:02 ` [RFC PATCH v2 01/11] KEYS: Add key_gc_flush() for draining RCU callbacks Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 02/11] nvme-keyring: Add a missing key_put() call to nvme_tls_key_lookup() Jarkko Sakkinen
2026-11-03 5:33 ` Christoph Hellwig
2026-11-03 12:29 ` Jarkko Sakkinen
2026-11-04 9:04 ` Christoph Hellwig
2026-11-04 14:43 ` Jarkko Sakkinen
2026-11-04 15:53 ` Keith Busch
2026-11-04 3:03 ` sashiko-bot
2026-11-04 7:45 ` Hannes Reinecke
2026-11-04 14:43 ` Jarkko Sakkinen
2026-11-03 3:02 ` [RFC PATCH v2 03/11] dns_resolver: Clear .dns_resolver cache when the last client unloads Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot [this message]
2026-11-03 3:02 ` [RFC PATCH v2 04/11] NFSv4: Clear idmap keyring " Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 05/11] smb: client: Clear idmap/SPNEGO caches when the last session is unloaded Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 06/11] s390/cert_store: Track subsystem keys instead of re-registering key_type Jarkko Sakkinen
2026-11-03 12:06 ` Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 07/11] KEYS: trusted: TEE: Disable sysfs bind attributes Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 08/11] KEYS: trusted: TEE: Synchronize session lifetime Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 09/11] KEYS: Pin the backing kernel module for a key type Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 10/11] KEYS: Remove key_type_dead Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:02 ` [RFC PATCH v2 11/11] KEYS: key_garbage_collector(): process in chunks Jarkko Sakkinen
2026-11-04 3:03 ` sashiko-bot
2026-11-03 3:10 ` [RFC PATCH v2 00/11] KEYS: Sanitize the garbage collector Jarkko Sakkinen
2026-11-03 12:32 ` Jarkko Sakkinen
2026-11-03 10:03 ` David Howells
2026-11-03 12:03 ` Jarkko Sakkinen
2026-11-03 14:00 ` David Howells
2026-11-03 15:06 ` Jarkko Sakkinen
2026-11-03 15:32 ` David Howells
2026-11-03 16:58 ` Jarkko Sakkinen
2026-11-04 0:30 ` Jarkko Sakkinen
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