linux-kernel - Re: [PATCH v3] netfs: fix reference leak

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <936354.1758805561@warthog.procyon.org.uk>
Date: Thu, 25 Sep 2025 14:06:01 +0100
From: David Howells <dhowells@...hat.com>
To: Christian Brauner <brauner@...nel.org>
Cc: dhowells@...hat.com, Max Kellermann <max.kellermann@...os.com>,
    Paulo Alcantara <pc@...guebit.org>, netfs@...ts.linux.dev,
    linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
    stable@...r.kernel.org
Subject: Re: [PATCH v3] netfs: fix reference leak

David Howells <dhowells@...hat.com> wrote:

> +/*
> + * Free a request (synchronously) that was just allocated but has
> + * failed before it could be submitted.
> + */
> +void netfs_put_failed_request(struct netfs_io_request *rreq)
> +{
> +	/* new requests have two references (see
> +	 * netfs_alloc_request(), and this function is only allowed on
> +	 * new request objects
> +	 */
> +	WARN_ON_ONCE(refcount_read(&rreq->ref) != 2);
> +
> +	trace_netfs_rreq_ref(rreq->debug_id, 0, netfs_rreq_trace_put_failed);
> +	netfs_free_request(&rreq->cleanup_work);
> +}
> +

Sigh.  I forgot to commit my changes.  Will repost.

David