From nobody Wed Apr 1 22:19:10 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AE23840B6E1 for ; Wed, 1 Apr 2026 10:57:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775041049; cv=none; b=uhxywCwtCrBScz4XeNpH6SqGsmfgV07+Zi5CWESOfBXuKntnfP2w47HwxMG/uqruzl+H7xOh35Q2CbSkIpZegk+afZ+irY6w4Vm1KfR6AC7RJP/Iw+jhPThYY73Uq0m2Ds/8+o7D1bLUzpmlLcbo8vIOwz4S5EKBeQWQaOdNIOE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775041049; c=relaxed/simple; bh=0SwzPQiq0K33AI2cjVS+euTUF2s1lCsvoeohpqkDfZM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nre7LB7EKHVAqVskciILrmqvH08GzJ8zTFfSnECnSQwcY8JgHmLCLUpbr+Jwd8P7XFl/DavM8LyU2E1dGBqnXma+S4eGIuAwyzGojLjF5y3twaA3NfZ0PDBDXPWwln9LsASxunbs9F4vIowwU4uMvJtRENw/ov/rt5VBaSntGEM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=So1eXzNi; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="So1eXzNi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1775041046; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JdpppyRA5L+XT2V7G6SjlP5WRQLvmrVCKEV5uP5VLSc=; b=So1eXzNibojx1PcjcOncV6TPmMZsR/FBAjsbjXRM7FFbBIl984pfAQi2iQfDJ0gh+zy6fa HsuUylF/GLdyfgoDXulcC+1kBJb1HWiSVuJY5oXJGUq079373IHvaqmRDiD8W4vpHmHcoS 5qwJKFKKVTCKi5v79jZZmDUjxWhBmz8= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-562-h6_kB-MTNDWyxOhqrkKjKw-1; Wed, 01 Apr 2026 06:57:20 -0400 X-MC-Unique: h6_kB-MTNDWyxOhqrkKjKw-1 X-Mimecast-MFC-AGG-ID: h6_kB-MTNDWyxOhqrkKjKw_1775041039 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id C85541955BCE; Wed, 1 Apr 2026 10:57:18 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.44.35.245]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 0B79C19560AB; Wed, 1 Apr 2026 10:57:14 +0000 (UTC) From: David Howells To: netdev@vger.kernel.org Cc: David Howells , Marc Dionne , Jakub Kicinski , "David S. Miller" , Eric Dumazet , Paolo Abeni , linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, Anderson Nascimento , Jeffrey Altman , Simon Horman , stable@kernel.org Subject: [PATCH net v4 09/15] rxrpc: Fix key reference count leak from call->key Date: Wed, 1 Apr 2026 11:56:02 +0100 Message-ID: <20260401105614.1696001-10-dhowells@redhat.com> In-Reply-To: <20260401105614.1696001-1-dhowells@redhat.com> References: <20260401105614.1696001-1-dhowells@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Type: text/plain; charset="utf-8" From: Anderson Nascimento When creating a client call in rxrpc_alloc_client_call(), the code obtains a reference to the key. This is never cleaned up and gets leaked when the call is destroyed. Fix this by freeing call->key in rxrpc_destroy_call(). Before the patch, it shows the key reference counter elevated: $ cat /proc/keys | grep afs@54321 1bffe9cd I--Q--i 8053480 4169w 3b010000 1000 1000 rxrpc afs@54321: ka $ After the patch, the invalidated key is removed when the code exits: $ cat /proc/keys | grep afs@54321 $ Fixes: f3441d4125fc ("rxrpc: Copy client call parameters into rxrpc_call ea= rlier") Signed-off-by: Anderson Nascimento Co-developed-by: David Howells Signed-off-by: David Howells Reviewed-by: Jeffrey Altman cc: Marc Dionne cc: Eric Dumazet cc: "David S. Miller" cc: Jakub Kicinski cc: Paolo Abeni cc: Simon Horman cc: linux-afs@lists.infradead.org cc: netdev@vger.kernel.org cc: stable@kernel.org --- net/rxrpc/call_object.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c index 59329cfe1532..f035f486c139 100644 --- a/net/rxrpc/call_object.c +++ b/net/rxrpc/call_object.c @@ -692,6 +692,7 @@ static void rxrpc_destroy_call(struct work_struct *work) rxrpc_put_bundle(call->bundle, rxrpc_bundle_put_call); rxrpc_put_peer(call->peer, rxrpc_peer_put_call); rxrpc_put_local(call->local, rxrpc_local_put_call); + key_put(call->key); call_rcu(&call->rcu, rxrpc_rcu_free_call); }